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229
collisiontest.p8
Normal file
229
collisiontest.p8
Normal file
@ -0,0 +1,229 @@
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|||||||
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pico-8 cartridge // http://www.pico-8.com
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||||||
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version 42
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||||||
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__lua__
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||||||
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bx0=0
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by0=0
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bx1=127
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by1=127
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lx0=0
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ly0=0
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lx1=127
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ly1=127
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||||||
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-->8
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||||||
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||||||
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function collides()
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local tmin,tmax=0,1
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local ldx,ldy=lx1-lx0,ly1-ly0
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||||||
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-- x
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if ldx==0 then
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if (lx0<bx0 or lx0>bx1) return
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else
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local tx0=(bx0-lx0)/ldx
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local tx1=(bx1-lx0)/ldx
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if (tx0 > tx1) tx0,tx1=tx1,tx0
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if (tmin < tx0) tmin=tx0
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if (tmax > tx1) tmax=tx1
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||||||
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end
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||||||
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if ldy==0 then
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if (ly0<by0 or ly0>by1) return
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else
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local ty0=(by0-ly0)/ldy
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local ty1=(by1-ly0)/ldy
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if (ty0 > ty1) ty0,ty1=ty1,ty0
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if (tmin < ty0) tmin=ty0
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||||||
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if (tmax > ty1) tmax=ty1
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||||||
|
end
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||||||
|
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||||||
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if (tmax < tmin) return
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return tmin,tmax
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|
end
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||||||
|
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||||||
|
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||||||
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-->8
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||||||
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function _init()
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||||||
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poke(0x5f2d,1) -- enable mouse
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||||||
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end
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||||||
|
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||||||
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function _bounce_screen(x)
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||||||
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return _bounce(x*128,128)
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||||||
|
end
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||||||
|
function _bounce(x,mx)
|
||||||
|
x=x%(mx * 2)
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||||||
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if (x>=mx)return mx-(x-mx)
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||||||
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return x
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||||||
|
end
|
||||||
|
|
||||||
|
function _to_halfopen(x0,x1)
|
||||||
|
-- turn two numbers into a
|
||||||
|
-- half-open integer range
|
||||||
|
x0=flr(x0)
|
||||||
|
x1=flr(x1)
|
||||||
|
local lo=min(x0,x1)
|
||||||
|
local hi=max(x0,x1)
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||||||
|
if (hi==lo) return lo,hi
|
||||||
|
return lo,hi-1
|
||||||
|
end
|
||||||
|
|
||||||
|
function _update60()
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||||||
|
local t=time()/16
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||||||
|
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||||||
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local bx0_=_bounce_screen(t*1)
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||||||
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local by0_=_bounce_screen(t*2)
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||||||
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local bx1_=_bounce_screen(t*3)
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||||||
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local by1_=_bounce_screen(t*4)
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||||||
|
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||||||
|
bx0,bx1=_to_halfopen(bx0_,bx1_)
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||||||
|
by0,by1=_to_halfopen(by0_,by1_)
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||||||
|
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||||||
|
update_line()
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||||||
|
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||||||
|
--[[
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||||||
|
local lx0_=_bounce_screen(t*1.5)
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||||||
|
local ly0_=_bounce_screen(t*2.5)
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||||||
|
local lx1_=_bounce_screen(t*3.5)
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||||||
|
local ly1_=_bounce_screen(t*4.5)
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||||||
|
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||||||
|
lx0,lx1=lx0_,lx1_
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||||||
|
ly0,ly1=ly0_,ly1_
|
||||||
|
]]--
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||||||
|
end
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||||||
|
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||||||
|
was_down=false
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||||||
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last_mx,last_my=nil,nil
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||||||
|
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||||||
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function update_line()
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||||||
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local mx,my=stat(32),stat(33)
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||||||
|
local is_down=stat(34)!=0
|
||||||
|
|
||||||
|
if is_down then
|
||||||
|
if was_down then
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||||||
|
lx1,ly1=mx,my
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||||||
|
else
|
||||||
|
lx0,ly0=mx,my
|
||||||
|
end
|
||||||
|
end
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||||||
|
was_down=is_down
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||||||
|
last_mx,last_my=mx,my
|
||||||
|
end
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||||||
|
-->8
|
||||||
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function _draw()
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||||||
|
cls(0)
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||||||
|
rect(bx0,by0,bx1,by1,6)
|
||||||
|
--quickzot(lx1,ly1,2,lx1-lx0,ly1-ly0,10,9,8)
|
||||||
|
linefill(lx0, ly0, lx1, ly1, 2, 9)
|
||||||
|
line(lx0,ly0,lx1,ly1,2)
|
||||||
|
local cmin, cmax = collides()
|
||||||
|
if cmin then
|
||||||
|
local dx,dy=lx1-lx0,ly1-ly0
|
||||||
|
line(lx0 + dx*cmin,
|
||||||
|
ly0 + dy*cmin,
|
||||||
|
lx0 + dx*cmax,
|
||||||
|
ly0 + dy*cmax,
|
||||||
|
11)
|
||||||
|
pset(lx0 + dx*cmin,
|
||||||
|
ly0 + dy*cmin,
|
||||||
|
12)
|
||||||
|
end
|
||||||
|
|
||||||
|
pset(last_mx,last_my,7)
|
||||||
|
end
|
||||||
|
-->8
|
||||||
|
function zot_one(x, y, r, ir, dx, dy, hot, warm)
|
||||||
|
local x0, y0 = x-dx, y-dy
|
||||||
|
local rx,ry,irx,iry=r*sgn(dx),r*sgn(dy),ir*sgn(dx),ir*sgn(dy)
|
||||||
|
if warm then
|
||||||
|
line(x0+irx,y0-ry,x+rx,y-iry,warm)
|
||||||
|
line(x0-rx,y0+iry,x-irx,y+ry,warm)
|
||||||
|
--line(x0-rx,y0-ry,x+rx,y+ry,warm)
|
||||||
|
end
|
||||||
|
line(x0,y0,x+rx,y-iry,hot)
|
||||||
|
line(x0,y0,x-irx,y+ry,hot)
|
||||||
|
--line(x0,y0,x+rx,y+ry,hot)
|
||||||
|
end
|
||||||
|
|
||||||
|
function zot(x,y,r,dx,dy,hot,warm,cold)
|
||||||
|
local x0,y0,sdx,sdy=x-dx,y-dy,sgn(dx),sgn(dy)
|
||||||
|
local rx,ry=r*sdx,r*sdy
|
||||||
|
if cold then
|
||||||
|
rectfill(x0-rx,y0-ry,x0+rx,y0+ry,cold)
|
||||||
|
local sdxh,sdyh=sdx/2,sdy/2
|
||||||
|
line(x0-rx-sdxh,y0+ry+sdyh,x-rx,y+ry,cold)
|
||||||
|
line(x0+rx+sdxh,y0-ry-sdyh,x+rx,y-ry,cold)
|
||||||
|
end
|
||||||
|
for i=-r,r do
|
||||||
|
line(x0+i*sdx,y0-ry,x+rx,y-i*sdy,warm)
|
||||||
|
line(x0-rx,y0+i*sdy,x-i*sdx,y+ry,warm)
|
||||||
|
end
|
||||||
|
for i=-r,r do
|
||||||
|
line(x0,y0,x+rx,y-i*sdy,hot)
|
||||||
|
line(x0,y0,x-i*sdx,y+ry,hot)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function quickzot(x,y,r,dx,dy,hot,warm,cold)
|
||||||
|
local x0, y0, r2 = x-dx, y-dy, r/2
|
||||||
|
rectfill(x0-0.5-r2, y0-0.5-r2, x0+r2+0.5, y0+r2+0.5, cold)
|
||||||
|
local a = atan2(dx,dy)-0.25
|
||||||
|
local tdx,tdy=cos(a), sin(a)
|
||||||
|
for i=-r*0.65,r*0.65,0.65 do
|
||||||
|
line(x0+i*tdx, y0+i*tdy, x+i*tdx, y+i*tdy, warm)
|
||||||
|
end
|
||||||
|
rectfill(x-r2,y-r2,x+r2,y+r2,hot)
|
||||||
|
end
|
||||||
|
|
||||||
|
-- linefill x0 y0 x1 y1 r [col]
|
||||||
|
-- draw a thicc line
|
||||||
|
-- https://www.lexaloffle.com/bbs/?tid=39016
|
||||||
|
function linefill(ax,ay,bx,by,r,c)
|
||||||
|
if(c) color(c)
|
||||||
|
local dx,dy=bx-ax,by-ay
|
||||||
|
-- avoid overflow
|
||||||
|
-- credits: https://www.lexaloffle.com/bbs/?tid=28999
|
||||||
|
local d,n = abs(dx),abs(dy)
|
||||||
|
if (d<n) d,n=n,d
|
||||||
|
n/=d
|
||||||
|
d*=sqrt(n*n+1)
|
||||||
|
if(d<0.001) return
|
||||||
|
local ca,sa=dx/d,-dy/d
|
||||||
|
|
||||||
|
-- polygon points
|
||||||
|
local s={
|
||||||
|
{0,-r},{d,-r},{d,r},{0,r}
|
||||||
|
}
|
||||||
|
local u,v,spans=s[4][1],s[4][2],{}
|
||||||
|
local x0,y0=ax+u*ca+v*sa,ay-u*sa+v*ca
|
||||||
|
for i=1,4 do
|
||||||
|
local u,v=unpack(s[i])
|
||||||
|
local x1,y1=ax+u*ca+v*sa,ay-u*sa+v*ca
|
||||||
|
local _x1,_y1=x1,y1
|
||||||
|
if(y0>y1) x0,y0,x1,y1=x1,y1,x0,y0
|
||||||
|
local dx=(x1-x0)/(y1-y0)
|
||||||
|
if(y0<0) x0-=y0*dx y0=-1
|
||||||
|
local cy0=y0\1+1
|
||||||
|
-- sub-pix shift
|
||||||
|
x0+=(cy0-y0)*dx
|
||||||
|
for y=y0\1+1,min(y1\1,127) do
|
||||||
|
-- open span?
|
||||||
|
local span=spans[y]
|
||||||
|
if span then
|
||||||
|
rectfill(x0,y,span,y)
|
||||||
|
else
|
||||||
|
spans[y]=x0
|
||||||
|
end
|
||||||
|
x0+=dx
|
||||||
|
end
|
||||||
|
x0,y0=_x1,_y1
|
||||||
|
end
|
||||||
|
end
|
||||||
|
__gfx__
|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00700700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00077000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00077000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00700700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
245
magnitest.p8
Normal file
245
magnitest.p8
Normal file
@ -0,0 +1,245 @@
|
|||||||
|
pico-8 cartridge // http://www.pico-8.com
|
||||||
|
version 42
|
||||||
|
__lua__
|
||||||
|
--magnitest.p8
|
||||||
|
--accuracy and perf tests for
|
||||||
|
--vector calculation logic
|
||||||
|
|
||||||
|
-- profiler says 67 cycles
|
||||||
|
-- 39 lua, 28 system
|
||||||
|
function bbs28999alg(dx, dy)
|
||||||
|
local d = max(abs(dx),abs(dy))
|
||||||
|
local n = min(abs(dx),abs(dy)) / d
|
||||||
|
return sqrt(n*n + 1) * d
|
||||||
|
end
|
||||||
|
|
||||||
|
-- profiler says 56 cycles
|
||||||
|
-- 24 lua, 32 system
|
||||||
|
function bbs28999algopt(dx, dy)
|
||||||
|
local d,n=abs(dx),abs(dy)
|
||||||
|
if (d<n) d,n=n,d
|
||||||
|
n/=d
|
||||||
|
return (n*n + 1)^0.5 * d
|
||||||
|
end
|
||||||
|
|
||||||
|
-- profiler says 54 cycles
|
||||||
|
-- 26 lua, 28 system
|
||||||
|
function bbs28999algopt2(dx, dy)
|
||||||
|
local d,n=abs(dx),abs(dy)
|
||||||
|
if (d<n) d,n=n,d
|
||||||
|
n/=d
|
||||||
|
return sqrt(n*n + 1) * d
|
||||||
|
end
|
||||||
|
|
||||||
|
|
||||||
|
-- profiler says 18 cycles
|
||||||
|
-- 18 lua, 0 system
|
||||||
|
function trigalg(dx, dy)
|
||||||
|
local s = sin(atan2(dx,dy))
|
||||||
|
if (s==0) return abs(dx)
|
||||||
|
return abs(dy/s)
|
||||||
|
end
|
||||||
|
-->8
|
||||||
|
function _init()
|
||||||
|
gdx,gdy=0,0
|
||||||
|
acc=1
|
||||||
|
magnitude = 1
|
||||||
|
tresult=0
|
||||||
|
bresult=0
|
||||||
|
delta=0
|
||||||
|
dp=0
|
||||||
|
end
|
||||||
|
|
||||||
|
function _update60()
|
||||||
|
if (btn(0)) gdx -= acc
|
||||||
|
if (btn(1)) gdx += acc
|
||||||
|
if (btn(2)) gdy -= acc
|
||||||
|
if (btn(3)) gdy += acc
|
||||||
|
if (btn(4) and btn(5)) gdx,gdy=0,0
|
||||||
|
gdx=mid(-16000,16000,gdx)
|
||||||
|
gdy=mid(-16000,16000,gdy)
|
||||||
|
|
||||||
|
if btn() == 0 or btn(4) then
|
||||||
|
acc = 1
|
||||||
|
elseif btn(5) then
|
||||||
|
acc *= 1.05
|
||||||
|
else
|
||||||
|
acc *= 1.02
|
||||||
|
end
|
||||||
|
if (acc > 1024) acc=1024
|
||||||
|
|
||||||
|
local a,b=abs(gdx),abs(gdy)
|
||||||
|
if (b>a) a,b=b,a
|
||||||
|
magnitude = 1
|
||||||
|
while magnitude < a/64 do
|
||||||
|
magnitude *= 2
|
||||||
|
end
|
||||||
|
|
||||||
|
bresult=bbs28999algopt2(gdx,gdy)
|
||||||
|
tresult=trigalg(gdx,gdy)
|
||||||
|
delta=tresult-bresult
|
||||||
|
dp=(2*abs(delta)/abs(abs(bresult)+abs(tresult)))*100
|
||||||
|
if (delta == 0) dp=0
|
||||||
|
end
|
||||||
|
|
||||||
|
cols = {
|
||||||
|
6,7,
|
||||||
|
[4]=10,
|
||||||
|
[8]=9,
|
||||||
|
[16]=4,
|
||||||
|
[32]=14,
|
||||||
|
[64]=15,
|
||||||
|
[128]=11,
|
||||||
|
[256]=12,
|
||||||
|
[512]=13,
|
||||||
|
[1024]=8,
|
||||||
|
}
|
||||||
|
|
||||||
|
function _draw()
|
||||||
|
cls()
|
||||||
|
camera()
|
||||||
|
print("x: "..tostr(gdx).." y: "..tostr(gdy).."\nbase: "..tostr(bresult).."\ntrig: "..tostr(tresult).."\n\ndiff: "..tostr(delta).."\n %:"..tostr(dp),0,0,13)
|
||||||
|
print("⬆️⬇️⬅️➡️:move ❎:fast 🅾️:slow\n❎+🅾️:reset position",0,117,12)
|
||||||
|
camera(-63,-63)
|
||||||
|
line(0,0,gdx/magnitude,gdy/magnitude,cols[magnitude] or 2)
|
||||||
|
rectfill(0,0,gdx/magnitude,0,5)
|
||||||
|
rectfill(0,0,0,gdy/magnitude,5)
|
||||||
|
end
|
||||||
|
|
||||||
|
__gfx__
|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
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|
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|
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|
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|
||||||
|
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|
||||||
|
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|
||||||
|
__label__
|
||||||
|
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||||||
|
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|
||||||
|
|
||||||
BIN
magnitest.p8.png
Normal file
BIN
magnitest.p8.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 4.6 KiB |
356
old_readme.md
Normal file
356
old_readme.md
Normal file
@ -0,0 +1,356 @@
|
|||||||
|
This file contains text that used to be in the cartridge itself, but
|
||||||
|
I'm getting increasingly anxious about cartridge space so I'm moving
|
||||||
|
it out ot a separate file.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
main loop sequence
|
||||||
|
==================
|
||||||
|
1. level_frame
|
||||||
|
2. events
|
||||||
|
3. merge new_events into events
|
||||||
|
4. update bg intangibles
|
||||||
|
5. move ships (player first)
|
||||||
|
6. move bullets (player first)
|
||||||
|
7. calculate collisions
|
||||||
|
1. pship on eship
|
||||||
|
2. ebullet on pship
|
||||||
|
3. pbullet on eship
|
||||||
|
8. update fg intangibles
|
||||||
|
9. check for end of level
|
||||||
|
|
||||||
|
draw order
|
||||||
|
----------
|
||||||
|
bottom to top:
|
||||||
|
1. intangibles_bg
|
||||||
|
2. player bullets
|
||||||
|
3. player ships
|
||||||
|
4. enemy ships
|
||||||
|
5. enemy bullets
|
||||||
|
6. intangibles_fg
|
||||||
|
|
||||||
|
notes
|
||||||
|
-----
|
||||||
|
intangibles_fg move()s after
|
||||||
|
all collisions and other moves
|
||||||
|
are processed. if an intangible
|
||||||
|
is added to the list as a result
|
||||||
|
of a collision or move, it will
|
||||||
|
itself be move()d before it is
|
||||||
|
drawn.
|
||||||
|
|
||||||
|
data-driven items
|
||||||
|
=================
|
||||||
|
guns and bullets both allow the
|
||||||
|
most common behaviors to be
|
||||||
|
expressed with data alone.
|
||||||
|
ships only need a movement
|
||||||
|
algorithm expressed.
|
||||||
|
|
||||||
|
guns
|
||||||
|
----
|
||||||
|
* t - metatable for bullet type.
|
||||||
|
fired once in the bullet's
|
||||||
|
default direction per shot.
|
||||||
|
* enemy - if true, fired bullets
|
||||||
|
are flagged as enemy bullets.
|
||||||
|
* icon - sprite index of an
|
||||||
|
8x8 sprite to display in the
|
||||||
|
hud when the player has this
|
||||||
|
gun. default is 20, a generic
|
||||||
|
crosshair bullseye thing.
|
||||||
|
* cooldown - min frames between
|
||||||
|
shots.
|
||||||
|
* ammo, maxammo - permitted
|
||||||
|
number of shots. 0 is empty
|
||||||
|
and unfireable. maxammo = 0
|
||||||
|
will cause a divide by zero
|
||||||
|
so don't do that. if nil,
|
||||||
|
ammo is infinite.
|
||||||
|
|
||||||
|
default guns manage ammo and
|
||||||
|
cooldown in shoot, then call
|
||||||
|
actually_shoot to create the
|
||||||
|
projectile. override only
|
||||||
|
actually_shoot to change
|
||||||
|
projectile logic while keeping
|
||||||
|
cooldown and ammo logic.
|
||||||
|
|
||||||
|
bullets
|
||||||
|
-------
|
||||||
|
* dx, dy - movement per frame.
|
||||||
|
player bullets use -dy
|
||||||
|
instead.
|
||||||
|
* enemyspd - multiplier for dx
|
||||||
|
and dy on enemy bullets.
|
||||||
|
default is 0.5, making enemy
|
||||||
|
shots much easier to dodge
|
||||||
|
* damage - damage per hit;
|
||||||
|
used by ships
|
||||||
|
* sprite - sprite index.
|
||||||
|
* x_off, y_off - renamed for
|
||||||
|
the next two vars. may revert
|
||||||
|
* center_off_x - the horizontal
|
||||||
|
centerpoint of the bullet,
|
||||||
|
for positioning when firing.
|
||||||
|
assume a pixel's coordinates
|
||||||
|
refer to the upper left corner
|
||||||
|
of the pixel; the center of
|
||||||
|
a 2-width bullet with an
|
||||||
|
upper left corner at 0 is 1,
|
||||||
|
not 0.5.
|
||||||
|
* top_off_y, bottom_off_y -
|
||||||
|
also for positioning when
|
||||||
|
firing. positive distance from
|
||||||
|
top or bottom edge to image.
|
||||||
|
top_off_y will usually be 0,
|
||||||
|
bottom_off_y will not be when
|
||||||
|
bullets are smaller than
|
||||||
|
the sprite box.
|
||||||
|
* width, height - measured in
|
||||||
|
full sprites (8x8 boxes), not
|
||||||
|
pixels. used for drawing.
|
||||||
|
|
||||||
|
bullets despawn when above or
|
||||||
|
below the screen (player or
|
||||||
|
enemy bullets, respectively).
|
||||||
|
|
||||||
|
by default, bullets despawn
|
||||||
|
when they hit something.
|
||||||
|
override hitship to change this.
|
||||||
|
|
||||||
|
ships
|
||||||
|
____
|
||||||
|
|
||||||
|
ships move by calculating
|
||||||
|
momentum, then offsetting their
|
||||||
|
position by that momentum, then
|
||||||
|
clamping their position to the
|
||||||
|
screen (horizontally only for
|
||||||
|
ships that autoscroll). ships
|
||||||
|
that autoscroll (slip==true)
|
||||||
|
then slide down by scrollspeed.
|
||||||
|
fractional coordinates are ok.
|
||||||
|
after movement, ships lose
|
||||||
|
momentum (ship.drag along each
|
||||||
|
axis). abs(momentum) can't
|
||||||
|
exceed ship.maxspeed.
|
||||||
|
|
||||||
|
ships gain momentum by acting
|
||||||
|
like a player pushing buttons.
|
||||||
|
the player ship actually reads
|
||||||
|
buttons for this.
|
||||||
|
|
||||||
|
act -- returns new acceleration:
|
||||||
|
dx, dy, shoot_spec, shoot_main.
|
||||||
|
dx and dy are change in momentum
|
||||||
|
in px/frame. this is controls
|
||||||
|
only -- friction is handled in
|
||||||
|
ship:move (`drag` value).
|
||||||
|
|
||||||
|
ships hitting another ship take
|
||||||
|
1 damage per frame of overlap.
|
||||||
|
ships hitting a bullet check
|
||||||
|
bullet.damage to find out how
|
||||||
|
much damage they take. damage
|
||||||
|
is applied to shields, then hp.
|
||||||
|
damaged ships flash briefly -
|
||||||
|
blue (12) if all damage was
|
||||||
|
shielded, white (7) if hp was
|
||||||
|
damaged. a ship that then has 0
|
||||||
|
or less hp calls self:die() and
|
||||||
|
tells the main game loop to
|
||||||
|
remove it.
|
||||||
|
|
||||||
|
shieldcooldown is the interval
|
||||||
|
between restoring shield points.
|
||||||
|
shieldpenalty is the delay
|
||||||
|
before restoring points after
|
||||||
|
any damage, reset to this value
|
||||||
|
on every damaging hit (whether
|
||||||
|
it is absorbed by the shield or
|
||||||
|
not) -- shield behaves like
|
||||||
|
halo and other shooters in its
|
||||||
|
heritage, where it recovers if
|
||||||
|
you avoid damage for a while.
|
||||||
|
not that there is any safe cover
|
||||||
|
in this kind of game.
|
||||||
|
|
||||||
|
ships do not repair hp on their
|
||||||
|
own. negative-damage bullets
|
||||||
|
are treated as 0, but a bullet
|
||||||
|
can choose to repair the ship
|
||||||
|
it hits in its own hitship
|
||||||
|
method, or otherwise edit it
|
||||||
|
(changing weapons, refilling
|
||||||
|
weapon ammo). powerups are
|
||||||
|
therefore a kind of bullet.
|
||||||
|
|
||||||
|
levels
|
||||||
|
======
|
||||||
|
|
||||||
|
a level is a table mapping
|
||||||
|
effective frame number to
|
||||||
|
functions. when a level starts,
|
||||||
|
it sets lframe ("level frame")
|
||||||
|
and distance to 0.
|
||||||
|
|
||||||
|
every frame, level_frame
|
||||||
|
increments lframe by 0x0.0001.
|
||||||
|
then if the level is not frozen,
|
||||||
|
it increments distance by 1.0
|
||||||
|
and runs the function in the
|
||||||
|
level table for exactly that
|
||||||
|
frame number (if any). distance
|
||||||
|
is therefore "nonfrozen frames",
|
||||||
|
and is used to trigger level
|
||||||
|
progress. lframe always
|
||||||
|
increments. ships are encouraged
|
||||||
|
to use lframe to control
|
||||||
|
animation and movement, and may
|
||||||
|
use distance to react to level
|
||||||
|
progress separately from overall
|
||||||
|
time. remember to multiply
|
||||||
|
lframe-related stuff by 0x0001.
|
||||||
|
|
||||||
|
a special sentinel value, eol,
|
||||||
|
marks the end of the level.
|
||||||
|
(the level engine doesn't know
|
||||||
|
when it's out of events, so
|
||||||
|
without eol, the level will
|
||||||
|
simply have no events forever.)
|
||||||
|
when it finds eol, level_frame
|
||||||
|
throws away the current level
|
||||||
|
and tells the main loop that it
|
||||||
|
might be done. the main loop
|
||||||
|
agrees the level is over and the
|
||||||
|
player has won when the level
|
||||||
|
has reached eol and there are
|
||||||
|
no more enemy ships, enemy
|
||||||
|
bullets, or background events
|
||||||
|
remaining. player ships, player
|
||||||
|
bullets, and intangibles are
|
||||||
|
not counted.
|
||||||
|
|
||||||
|
level freezing
|
||||||
|
--------------
|
||||||
|
the level is frozen when the
|
||||||
|
global value freeze > 0.
|
||||||
|
generally, something intending
|
||||||
|
to block level progress (a
|
||||||
|
miniboss, a minigame, etc.)
|
||||||
|
increments freeze and prepares
|
||||||
|
some means of decrementing it
|
||||||
|
when it no longer wants to block
|
||||||
|
level progress.
|
||||||
|
|
||||||
|
most commonly, we want to block
|
||||||
|
until some specific ship or
|
||||||
|
group of ships has died. for
|
||||||
|
these ships, override ship:die
|
||||||
|
to decrement freeze. make sure
|
||||||
|
to set ship.dead in any new
|
||||||
|
ship:die method so anything else
|
||||||
|
looking at it can recognize
|
||||||
|
the ship as dead.
|
||||||
|
|
||||||
|
for anything else, you probably
|
||||||
|
want an event to figure out when
|
||||||
|
to unfreeze.
|
||||||
|
|
||||||
|
levels start at 1
|
||||||
|
-----------------
|
||||||
|
|
||||||
|
distance is initialized to 0
|
||||||
|
but gets incremented before the
|
||||||
|
first time the engine looks for
|
||||||
|
events. therefore, the first
|
||||||
|
frame of the level executes
|
||||||
|
level[1]. since levelframe
|
||||||
|
executes before anything else,
|
||||||
|
level[1] sets up the first frame
|
||||||
|
drawn in the level. the player
|
||||||
|
does not see a blank world
|
||||||
|
before level[1] runs.
|
||||||
|
level[1] can therefore be used
|
||||||
|
to reconfigure the player ship,
|
||||||
|
set up backgrounds, start music,
|
||||||
|
kick off some kind of fade-in
|
||||||
|
animation, etc.
|
||||||
|
|
||||||
|
|
||||||
|
events
|
||||||
|
======
|
||||||
|
the global list "events" stores
|
||||||
|
0-argument functions which are
|
||||||
|
called every frame. if they
|
||||||
|
return true, they are removed
|
||||||
|
from the list and not run again;
|
||||||
|
if they return false, they stay
|
||||||
|
and will be called in later
|
||||||
|
frames. the level does not end
|
||||||
|
while the events table is
|
||||||
|
nonempty.
|
||||||
|
|
||||||
|
events are most commonly used
|
||||||
|
to set up something for later
|
||||||
|
(for example, blip uses an event
|
||||||
|
to remove the fx_pallete from
|
||||||
|
the flashing ship when the blip
|
||||||
|
expires), but can also be used
|
||||||
|
to implement a "level within a
|
||||||
|
level" that does something
|
||||||
|
complicated until it's done. if
|
||||||
|
you froze the level when
|
||||||
|
creating the event, remember
|
||||||
|
to thaw it (freeze -= 1) on all
|
||||||
|
paths that return true.
|
||||||
|
|
||||||
|
to do complex stuff in events,
|
||||||
|
use a closure or a metatable
|
||||||
|
that specifies __call.
|
||||||
|
|
||||||
|
to avoid editing the events
|
||||||
|
list while it is being iterated,
|
||||||
|
events that create new events
|
||||||
|
must add those events to
|
||||||
|
new_events rather than events.
|
||||||
|
new_events is only valid during
|
||||||
|
the "event execution" stage, so
|
||||||
|
events created at any other time
|
||||||
|
must go directly on events
|
||||||
|
without using new_events.
|
||||||
|
|
||||||
|
intangibles
|
||||||
|
===========
|
||||||
|
|
||||||
|
the intangibles_fg and
|
||||||
|
intangibles_bg lists contain
|
||||||
|
items with :move and :draw.
|
||||||
|
like ships and bullets, they
|
||||||
|
move during _update60 and
|
||||||
|
draw during _draw. they are
|
||||||
|
not checked for collisions.
|
||||||
|
|
||||||
|
intangibles_bg moves/draws
|
||||||
|
before anything else moves or
|
||||||
|
draws. intangibles_fg
|
||||||
|
moves/draws last. this controls
|
||||||
|
whether your intangible object
|
||||||
|
draws in front of or behind
|
||||||
|
other stuff. you probably want
|
||||||
|
intangibles_bg for decorative
|
||||||
|
elements and intangibles_fg
|
||||||
|
for explosions, score popups,
|
||||||
|
etc.
|
||||||
|
|
||||||
|
there's no scrolling background
|
||||||
|
engine but intangibles_bg could
|
||||||
|
be used to create one, including
|
||||||
|
using the map (otherwise unused
|
||||||
|
in this engine) for the purpose.
|
||||||
|
|
||||||
|
intangibles do not prevent the
|
||||||
|
level from ending. like bullets
|
||||||
|
and ships, if :move returns
|
||||||
|
true, they are dropped.
|
||||||
501
profiling.p8
Normal file
501
profiling.p8
Normal file
@ -0,0 +1,501 @@
|
|||||||
|
pico-8 cartridge // http://www.pico-8.com
|
||||||
|
version 42
|
||||||
|
__lua__
|
||||||
|
-- prof: cpu cycle counter v1.4
|
||||||
|
-- BY PANCELOR
|
||||||
|
--[[------------------------
|
||||||
|
|
||||||
|
|
||||||
|
use this cart to precisely
|
||||||
|
measure code execution time
|
||||||
|
|
||||||
|
--------------------------------
|
||||||
|
★ overview ★
|
||||||
|
--------------------------------
|
||||||
|
| tab 0 | usage guide |
|
||||||
|
| tab 1 | (internals) |
|
||||||
|
| tab 2 | your code here |
|
||||||
|
--------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
-----------------------
|
||||||
|
-- ★ usage guide ★ --
|
||||||
|
-----------------------
|
||||||
|
|
||||||
|
|
||||||
|
웃: i have two code snippets;
|
||||||
|
which one is faster?
|
||||||
|
|
||||||
|
🐱: edit the last tab with your
|
||||||
|
snippets, then run the cart.
|
||||||
|
it will tell you precisely
|
||||||
|
how much cpu it takes to
|
||||||
|
run each snippet.
|
||||||
|
|
||||||
|
the results are also copied
|
||||||
|
to your clipboard.
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
웃: what do the numbers mean?
|
||||||
|
|
||||||
|
🐱: the cpu cost is reported
|
||||||
|
as lua and system cycle
|
||||||
|
counts. look up stat(1)
|
||||||
|
and stat(2) for more info.
|
||||||
|
|
||||||
|
if you're not sure, just
|
||||||
|
look at the first number.
|
||||||
|
lower is faster (better)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
웃: why "{locals={9}}"
|
||||||
|
in the example?
|
||||||
|
|
||||||
|
🐱: accessing local variables
|
||||||
|
is faster than global vars.
|
||||||
|
|
||||||
|
so if your test involves
|
||||||
|
local variables, simulate
|
||||||
|
this by passing them in:
|
||||||
|
|
||||||
|
prof(function(a)
|
||||||
|
sqrt(a)
|
||||||
|
end,{ locals={9} })
|
||||||
|
|
||||||
|
/!\ /!\ /!\ /!\
|
||||||
|
local values from outside
|
||||||
|
the current scope are also
|
||||||
|
slower to access! example:
|
||||||
|
|
||||||
|
global = 4
|
||||||
|
local outer = 4
|
||||||
|
prof(function(x)
|
||||||
|
local _ = x --fast
|
||||||
|
end,function(x)
|
||||||
|
local _ = outer --slow
|
||||||
|
end,function(x)
|
||||||
|
local _ = global --slow
|
||||||
|
end,{ locals={4} })
|
||||||
|
/!\ /!\ /!\ /!\
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
웃: can i do "prof(myfunc)"?
|
||||||
|
|
||||||
|
🐱: no, this sometimes gives
|
||||||
|
wrong results! always use
|
||||||
|
inline functions:
|
||||||
|
|
||||||
|
prof(function()
|
||||||
|
--code for myfunc here
|
||||||
|
end)
|
||||||
|
|
||||||
|
as an example, "prof(sin)"
|
||||||
|
reports "-2" -- wrong! but
|
||||||
|
"prof(function()sin()end)"
|
||||||
|
correctly reports "4"
|
||||||
|
|
||||||
|
(see the technical notes at
|
||||||
|
the start of the next tab
|
||||||
|
for a brief explanation.
|
||||||
|
technically, "prof(myfunc)"
|
||||||
|
will work if myfunc was made
|
||||||
|
by the user, but you will
|
||||||
|
risk confusing yourself)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
---------------
|
||||||
|
★ method 2 ★
|
||||||
|
---------------
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
this cart is based on
|
||||||
|
code by samhocevar:
|
||||||
|
https://www.lexaloffle.com/bbs/?pid=60198#p
|
||||||
|
|
||||||
|
if you do this method, be very
|
||||||
|
careful with local/global vars.
|
||||||
|
it's very easy to accidentally
|
||||||
|
measure the wrong thing.
|
||||||
|
|
||||||
|
here's an example of how to
|
||||||
|
measure cycles (ignoring this
|
||||||
|
cart and using the old method)
|
||||||
|
|
||||||
|
function _init()
|
||||||
|
local a=11.2 -- locals
|
||||||
|
|
||||||
|
local n=1024
|
||||||
|
flip()
|
||||||
|
local tot1,sys1=stat(1),stat(2)
|
||||||
|
for i=1,n do end --calibrate
|
||||||
|
local tot2,sys2=stat(1),stat(2)
|
||||||
|
for i=1,n do local _=sqrt(a) end --measure
|
||||||
|
local tot3,sys3=stat(1),stat(2)
|
||||||
|
|
||||||
|
function cyc(t0,t1,t2) return ((t2-t1)-(t1-t0))*128/n*256/stat(8)*256 end
|
||||||
|
local lua = cyc(tot1-sys1,tot2-sys2,tot3-sys3)
|
||||||
|
local sys = cyc(sys1,sys2,sys3)
|
||||||
|
print(lua.."+"..sys.."="..(lua+sys).." (lua+sys)")
|
||||||
|
end
|
||||||
|
|
||||||
|
run this once, see the results,
|
||||||
|
then change the "measure" line
|
||||||
|
to some other code you want
|
||||||
|
to measure.
|
||||||
|
|
||||||
|
note: wrapping the code inside
|
||||||
|
"_init()" is required, otherwise
|
||||||
|
builtin functions like "sin"
|
||||||
|
will be measured wrong.
|
||||||
|
(the reason is explained at
|
||||||
|
the start of the next tab)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
---------------
|
||||||
|
★ method 3 ★
|
||||||
|
---------------
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
another way to measure cpu cost
|
||||||
|
is to run something like this:
|
||||||
|
|
||||||
|
function _draw()
|
||||||
|
cls(1)
|
||||||
|
local x=9
|
||||||
|
for i=1,1000 do
|
||||||
|
local a=sqrt(x) --snippet1
|
||||||
|
-- local b=x^0.5 --snippet2
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
while running, press ctrl-p to
|
||||||
|
see the performance monitor.
|
||||||
|
the middle number shows how much
|
||||||
|
of cpu is being used, as a
|
||||||
|
fraction. (0.60 = 60% used)
|
||||||
|
|
||||||
|
now, change the comments on the
|
||||||
|
two code snippets inside _draw()
|
||||||
|
and re-run. compare the new
|
||||||
|
result with the old to determine
|
||||||
|
which snippet is faster.
|
||||||
|
|
||||||
|
note: every loop iteration costs
|
||||||
|
an additional 2 cycles, so the
|
||||||
|
ratio of the two fractions will
|
||||||
|
not match the ratio of the
|
||||||
|
execution time of the snippets.
|
||||||
|
but this method can quickly tell
|
||||||
|
you which snippet is faster.
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
]]
|
||||||
|
|
||||||
|
-->8
|
||||||
|
--[[ profiler.lua
|
||||||
|
more info: https://www.lexaloffle.com/bbs/?tid=46117
|
||||||
|
|
||||||
|
usage:
|
||||||
|
prof(function()
|
||||||
|
memcpy(0,0x200,64)
|
||||||
|
end,function()
|
||||||
|
poke4(0,peek4(0x200,16))
|
||||||
|
end)
|
||||||
|
|
||||||
|
passing locals:
|
||||||
|
prof(
|
||||||
|
function(a,b)
|
||||||
|
local c=(a+1)*(b+1)-1
|
||||||
|
end,
|
||||||
|
function(a,b)
|
||||||
|
local c=a*b+a+b
|
||||||
|
end,
|
||||||
|
{locals={3,5}}
|
||||||
|
)
|
||||||
|
|
||||||
|
getting global/local variables exactly right
|
||||||
|
is very tricky; you should always use inline
|
||||||
|
functions like above; if you try e.g. prof(sin)
|
||||||
|
the results will be wrong.
|
||||||
|
|
||||||
|
|
||||||
|
# minutiae / notes to self:
|
||||||
|
---------------------------
|
||||||
|
doing this at top-level is awkward:
|
||||||
|
for _=1,n do end -- calibrate
|
||||||
|
for _=1,n do sin() end -- measure
|
||||||
|
b/c sin is secretly local at top-level,
|
||||||
|
so it gives a misleading result (3 cycles).
|
||||||
|
do it inside _init instead for a
|
||||||
|
more representative result (4 cycles).
|
||||||
|
|
||||||
|
## separate issue:
|
||||||
|
------------------
|
||||||
|
if you call prof(sin), it gives the wrong result (-2 cycles) because
|
||||||
|
it's comparing sin() against noop() (not truly nothing).
|
||||||
|
but we want the noop() there for normal inline prof() calls,
|
||||||
|
to avoid measuring the cost of the indirection
|
||||||
|
(calling func() from inside prof() is irrelevant to
|
||||||
|
how cpu-expensive func()'s body is)
|
||||||
|
]]
|
||||||
|
|
||||||
|
-- prof(fn1,fn2,...,fnN,[opts])
|
||||||
|
--
|
||||||
|
-- opts.locals: values to pass
|
||||||
|
-- opts.name: text label
|
||||||
|
-- opts.n: number of iterations
|
||||||
|
function prof(...)
|
||||||
|
local funcs={...}
|
||||||
|
local opts=type(funcs[#funcs])=="table" and deli(funcs) or {}
|
||||||
|
|
||||||
|
-- build output string
|
||||||
|
local msg=""
|
||||||
|
local function log(s)
|
||||||
|
msg..=s.."\n"
|
||||||
|
end
|
||||||
|
|
||||||
|
if opts.name then
|
||||||
|
log("prof: "..opts.name)
|
||||||
|
end
|
||||||
|
for fn in all(funcs) do
|
||||||
|
local dat=prof_one(fn,opts)
|
||||||
|
log(sub(" "..dat.total,-3)
|
||||||
|
.." ("
|
||||||
|
..dat.lua
|
||||||
|
.." lua, "
|
||||||
|
..dat.sys
|
||||||
|
.." sys)")
|
||||||
|
end
|
||||||
|
|
||||||
|
-- copy to clipboard
|
||||||
|
printh(msg,"@clip")
|
||||||
|
-- print + pause
|
||||||
|
cls()
|
||||||
|
stop(msg)
|
||||||
|
end
|
||||||
|
|
||||||
|
function prof_one(func, opts)
|
||||||
|
opts = opts or {}
|
||||||
|
local n = opts.n or 0x200 --how many times to call func
|
||||||
|
local locals = opts.locals or {} --locals to pass func
|
||||||
|
|
||||||
|
-- we want to type
|
||||||
|
-- local m = 0x80_0000/n
|
||||||
|
-- but 8MHz is too large to fit in a pico-8 number,
|
||||||
|
-- so we do (0x80_0000>>16)/(n>>16) instead
|
||||||
|
-- (n is always an integer, so n>>16 won't lose any bits)
|
||||||
|
local m = 0x80/(n>>16)
|
||||||
|
assert(0x80/m << 16 == n, "n is too small") -- make sure m didn't overflow
|
||||||
|
local fps = stat(8)
|
||||||
|
|
||||||
|
-- given three timestamps (pre-calibration, middle, post-measurement),
|
||||||
|
-- calculate how many more CPU cycles func() took compared to noop()
|
||||||
|
-- derivation:
|
||||||
|
-- T := ((t2-t1)-(t1-t0))/n (frames)
|
||||||
|
-- this is the extra time for each func call, compared to noop
|
||||||
|
-- this is measured in #-of-frames -- it will be a small fraction for most ops
|
||||||
|
-- F := 1/30 (seconds/frame) (or 1/60 if this test is running at 60fps)
|
||||||
|
-- this is just the framerate that the tests run at, not the framerate of your game
|
||||||
|
-- M := 256*256*128 = 0x80_0000 = 8MHz (cycles/second)
|
||||||
|
-- (PICO-8 runs at 8MHz; see https://www.lexaloffle.com/dl/docs/pico-8_manual.html#CPU)
|
||||||
|
-- cycles := T frames * F seconds/frame * M cycles/second
|
||||||
|
-- optimization / working around pico-8's fixed point numbers:
|
||||||
|
-- T2 := T*n = (t2-t1)-(t1-t0)
|
||||||
|
-- M2 := M/n = (M>>16)/(n>>16) := m (e.g. when n is 0x1000, m is 0x800)
|
||||||
|
-- cycles := T2*M2*F
|
||||||
|
local function cycles(t0,t1,t2)
|
||||||
|
local diff = (t2-t1)-(t1-t0)
|
||||||
|
local e1 = "must use inline functions -- see usage guide"
|
||||||
|
assert(0<=diff,e1)
|
||||||
|
local thresh = 0x7fff.ffff/(m/fps)
|
||||||
|
local e2 = "code is too large or slow -- try profiling manually with stat(1)"
|
||||||
|
assert(diff<=thresh,e2)
|
||||||
|
return diff*(m/fps)
|
||||||
|
end
|
||||||
|
|
||||||
|
local noop = function() end -- this must be local, because func is local
|
||||||
|
flip() --avoid flipping mid-measurement
|
||||||
|
local atot,asys=stat(1),stat(2)
|
||||||
|
for _=1,n do noop(unpack(locals)) end -- calibrate
|
||||||
|
local btot,bsys=stat(1),stat(2)
|
||||||
|
for _=1,n do func(unpack(locals)) end -- measure
|
||||||
|
local ctot,csys=stat(1),stat(2)
|
||||||
|
|
||||||
|
-- gather results
|
||||||
|
local tot=cycles(atot,btot,ctot)
|
||||||
|
local sys=cycles(asys,bsys,csys)
|
||||||
|
return {
|
||||||
|
lua=tot-sys,
|
||||||
|
sys=sys,
|
||||||
|
total=tot,
|
||||||
|
}
|
||||||
|
end
|
||||||
|
|
||||||
|
-->8
|
||||||
|
-- your code here
|
||||||
|
|
||||||
|
--edit me:
|
||||||
|
prof(function(dx,dy)
|
||||||
|
local d = max(abs(dx),abs(dy))
|
||||||
|
local n = min(abs(dx),abs(dy)) / d
|
||||||
|
return sqrt(n*n + 1) * d
|
||||||
|
end,function(dx, dy)
|
||||||
|
local d,n=abs(dx),abs(dy)
|
||||||
|
if (d<n) d,n=n,d
|
||||||
|
n/=d
|
||||||
|
return (n*n + 1)^0.5 * d
|
||||||
|
end,function(dx,dy)
|
||||||
|
local d,n=abs(dx),abs(dy)
|
||||||
|
if (d<n) d,n=n,d
|
||||||
|
n/=d
|
||||||
|
return sqrt(n*n + 1) * d
|
||||||
|
end,function(dx,dy)
|
||||||
|
local s = sin(atan2(dx,dy))
|
||||||
|
if (s==0) return abs(dx)
|
||||||
|
return abs(dy/s)
|
||||||
|
end,{ locals={3,4} })
|
||||||
|
|
||||||
|
-- "locals" (optional) are
|
||||||
|
-- passed in as args. see the
|
||||||
|
-- usage guide for details.
|
||||||
|
|
||||||
|
__label__
|
||||||
|
00006660000000006660000000006660000006006000606066600000066060600660060000000000000000000000000000000000000000000000000000000000
|
||||||
|
00006000060000006060666000006000000060006000606060600600600060606000006000000000000000000000000000000000000000000000000000000000
|
||||||
|
00006660666000006060000000006660000060006000606066606660666066606660006000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000060060000006060666000000060000060006000606060600600006000600060006000000000000000000000000000000000000000000000000000000000
|
||||||
|
00006660000000006660000000006660000006006660066060600000660066606600060000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00006060000000006660000000006060000006006000606066600000066060600660060000000000000000000000000000000000000000000000000000000000
|
||||||
|
00006060060000006060666000006060000060006000606060600600600060606000006000000000000000000000000000000000000000000000000000000000
|
||||||
|
00006660666000006060000000006660000060006000606066606660666066606660006000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000060060000006060666000000060000060006000606060600600006000600060006000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000060000000006660000000000060000006006660066060600000660066606600060000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
07000000888800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00700000888800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
07000000888800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
70000000888800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
|
||||||
|
__sfx__
|
||||||
|
030100003052500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505
|
||||||
223
rearm_prototype.p8
Normal file
223
rearm_prototype.p8
Normal file
@ -0,0 +1,223 @@
|
|||||||
|
pico-8 cartridge // http://www.pico-8.com
|
||||||
|
version 42
|
||||||
|
__lua__
|
||||||
|
-- vacuum gambit
|
||||||
|
-- by kistaro windrider
|
||||||
|
|
||||||
|
-- stdlib
|
||||||
|
|
||||||
|
-- generate standard "overlay"
|
||||||
|
-- constructor for type tt.
|
||||||
|
-- if tt.init is defined, generated
|
||||||
|
-- new calls tt.init(ret) after
|
||||||
|
-- ret is definitely not nil,
|
||||||
|
-- before calling setmetatable.
|
||||||
|
-- use to initialize mutables.
|
||||||
|
--
|
||||||
|
-- if there was a previous new,
|
||||||
|
-- it is invoked on the new
|
||||||
|
-- object *after* more, because
|
||||||
|
-- this works better with the
|
||||||
|
-- `more` impls i use.
|
||||||
|
function mknew(tt)
|
||||||
|
local mt,oldnew,more = {__index=tt},tt.new,rawget(tt, "init")
|
||||||
|
tt.new=function(ret)
|
||||||
|
if(not ret) ret = {}
|
||||||
|
if(more) more(ret)
|
||||||
|
if(oldnew) oldnew(ret)
|
||||||
|
setmetatable(ret, mt)
|
||||||
|
return ret
|
||||||
|
end
|
||||||
|
return tt
|
||||||
|
end
|
||||||
|
|
||||||
|
function easeoutbounce(t)
|
||||||
|
local n1=7.5625
|
||||||
|
local d1=2.75
|
||||||
|
|
||||||
|
if (t<1/d1) then
|
||||||
|
return n1*t*t;
|
||||||
|
elseif(t<2/d1) then
|
||||||
|
t-=1.5/d1
|
||||||
|
return n1*t*t+.75;
|
||||||
|
elseif(t<2.5/d1) then
|
||||||
|
t-=2.25/d1
|
||||||
|
return n1*t*t+.9375;
|
||||||
|
else
|
||||||
|
t-=2.625/d1
|
||||||
|
return n1*t*t+.984375;
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
-->8
|
||||||
|
-- entry points
|
||||||
|
function _draw()
|
||||||
|
cls()
|
||||||
|
draw_hud_placeholder()
|
||||||
|
left_pane:draw()
|
||||||
|
right_pane:draw()
|
||||||
|
rearm_pane_instance:draw()
|
||||||
|
end
|
||||||
|
|
||||||
|
function _init()
|
||||||
|
item=1
|
||||||
|
bfm=1
|
||||||
|
crt_frm = 1
|
||||||
|
left_pane = weapon_pane.new{}
|
||||||
|
right_pane = weapon_pane.new{
|
||||||
|
is_left=false,
|
||||||
|
s = 2,
|
||||||
|
hdr = "vulc",
|
||||||
|
body = " rate\n\n faster\n firing\n rate",
|
||||||
|
hot = function() return item == 2 end}
|
||||||
|
rearm_pane_instance = rearm_pane.new{hot=function() return item < 0 end}
|
||||||
|
end
|
||||||
|
|
||||||
|
function _update60()
|
||||||
|
crt_frm += 0.25
|
||||||
|
if (crt_frm >= 9) crt_frm = 1
|
||||||
|
if (btn(3) and item > 0 or btn(2) and item < 0) item = -item
|
||||||
|
if (btn(0)) item = 1
|
||||||
|
if (btn(1)) item = 2
|
||||||
|
if (btn() & 0xF ~= 0) and bfm >= 10 or bfm >= 30 then
|
||||||
|
bfm = 1
|
||||||
|
else
|
||||||
|
bfm += 1
|
||||||
|
end
|
||||||
|
|
||||||
|
if btnp(4) then
|
||||||
|
left_pane.pos = -1
|
||||||
|
right_pane.pos = -1
|
||||||
|
rearm_pane_instance.pos = -1
|
||||||
|
end
|
||||||
|
|
||||||
|
if btnp(5) then
|
||||||
|
left_pane.pos = 1
|
||||||
|
right_pane.pos = 1
|
||||||
|
rearm_pane_instance.pos = 1
|
||||||
|
end
|
||||||
|
|
||||||
|
left_pane:update()
|
||||||
|
right_pane:update()
|
||||||
|
rearm_pane_instance:update()
|
||||||
|
end
|
||||||
|
|
||||||
|
function draw_hud_placeholder()
|
||||||
|
rectfill(112, 0, 127, 127,0x56)
|
||||||
|
rect(112,0,127,127,7)
|
||||||
|
line(127,1,127,127,5)
|
||||||
|
line(113,127)
|
||||||
|
end
|
||||||
|
|
||||||
|
-->8
|
||||||
|
-- rearm pane drawing
|
||||||
|
|
||||||
|
crt={-91,-166,-2641,-1441,-23041,23295,-20491,24570}
|
||||||
|
|
||||||
|
function glow_box(x0, y0, x1, y1, c, cf)
|
||||||
|
for i,v in ipairs{c[1],c[2],c[1],0} do
|
||||||
|
i -= 1
|
||||||
|
rect(x0+i,y0+i,x1-i,y1-i,v)
|
||||||
|
end
|
||||||
|
fillp(crt[crt_frm&0xff])
|
||||||
|
rectfill(x0+4, y0+4, x1-4, y1-4, cf)
|
||||||
|
fillp()
|
||||||
|
end
|
||||||
|
|
||||||
|
function frame_col(hot)
|
||||||
|
if (not hot) return {4,10}
|
||||||
|
if (bfm<=16) return {14,7}
|
||||||
|
return {2,8}
|
||||||
|
end
|
||||||
|
|
||||||
|
function draw_weap_opt(x, y, c, s, hdr, body)
|
||||||
|
camera(-x,-y)
|
||||||
|
glow_box(0,0,55,100,c,1)
|
||||||
|
spr(s,5, 5)
|
||||||
|
print(hdr, 13, 8, 7)
|
||||||
|
print(body, 5, 15, 6)
|
||||||
|
camera()
|
||||||
|
end
|
||||||
|
|
||||||
|
function draw_rearm(c)
|
||||||
|
glow_box(0,101,111,127,c,1)
|
||||||
|
spr(5,15,107,4,2)
|
||||||
|
print("full ammo\nfull shield\n+50% health",54, 106, 6)
|
||||||
|
end
|
||||||
|
|
||||||
|
-->8
|
||||||
|
-- rearm pane objects
|
||||||
|
easing_pane = mknew{
|
||||||
|
-- to enter: pos = -1; to exit: pos = 1
|
||||||
|
-- runs for 32 frames in, 16 frames out
|
||||||
|
}
|
||||||
|
|
||||||
|
function easing_pane:frac()
|
||||||
|
local pos = self.pos
|
||||||
|
if (not pos) return
|
||||||
|
if (pos < 0) return 1-easeoutbounce(1+pos)
|
||||||
|
if (pos > 0) return (1-pos)*(1-pos)
|
||||||
|
return 0
|
||||||
|
end
|
||||||
|
|
||||||
|
function easing_pane:update()
|
||||||
|
local pos = self.pos
|
||||||
|
if (not pos or pos == 0) return
|
||||||
|
if (pos < 0) pos = min(pos + 0x0.05, 0)
|
||||||
|
if pos > 0 then
|
||||||
|
pos -= 0x0.1
|
||||||
|
if (pos <= 0) pos = nil
|
||||||
|
end
|
||||||
|
self.pos = pos
|
||||||
|
end
|
||||||
|
|
||||||
|
weapon_pane = mknew(easing_pane.new{
|
||||||
|
is_left = true,
|
||||||
|
s = 1,
|
||||||
|
hdr = "hull",
|
||||||
|
body = "\n +1\n max\n health",
|
||||||
|
hot = function() return item == 1 end,
|
||||||
|
})
|
||||||
|
|
||||||
|
function weapon_pane:draw()
|
||||||
|
local frac, is_left = self:frac(), self.is_left
|
||||||
|
if (not frac) return
|
||||||
|
camera(
|
||||||
|
frac * (is_left and 55 or -128) + (1-frac) * (is_left and 0 or -56),
|
||||||
|
0)
|
||||||
|
glow_box(0,0,55,100,frame_col(self:hot()),1)
|
||||||
|
spr(self.s,5, 5)
|
||||||
|
print(self.hdr, 13, 8, 7)
|
||||||
|
print(self.body, 5, 15, 6)
|
||||||
|
camera()
|
||||||
|
end
|
||||||
|
|
||||||
|
rearm_pane = mknew(easing_pane.new{})
|
||||||
|
|
||||||
|
function rearm_pane:draw()
|
||||||
|
local frac = self:frac()
|
||||||
|
if (not frac) return
|
||||||
|
camera(0, -28 * frac)
|
||||||
|
glow_box(0,101,111,127,frame_col(self:hot()),1)
|
||||||
|
spr(5,15,107,4,2)
|
||||||
|
print("full ammo\nfull shield\n+50% health",54, 106, 6)
|
||||||
|
camera()
|
||||||
|
end
|
||||||
|
|
||||||
|
__gfx__
|
||||||
|
000000000b00000000000a0007700770000aa0000444440004444444000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000000bba80880000008000aa00aa00a0880a0447777700477777a000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
007007000aaa28780a0000000990099008000080477aaa7a0477aaaa000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
0007000008a8887808000000099009900080080047a0047a047a0000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00007000088888820000a000088008800000000047a0447a047a0000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
00700700008888200000800008800880a000000a47a4477a047a4440000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
000000000008820000a0000008800880080aa080477777a00477777a000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
0000000000002000008000000880088000088000477770000422aaaa222200020000020000000000000000000000000000000000000000000000000000000000
|
||||||
|
0d5000000000000000000000000000000000000047a77700022ee0002eeee002e00022e000000000000000000000000000000000000000000000000000000000
|
||||||
|
d00000000000000000000000000000000000000047a4777002ea2e002e002e02ee022ee000000000000000000000000000000000000000000000000000000000
|
||||||
|
500000000000000000000000000000000000000047a0477a22ea2e002e002e02e2e2e2e000000000000000000000000000000000000000000000000000000000
|
||||||
|
000000000000000000000000000000000000000047a0047a2e2222e02e222e02e02e02e000000000000000000000000000000000000000000000000000000000
|
||||||
|
000000000000000000000000000000000000000047a0047a2eeeeeea2eeee002e02e02e000000000000000000000000000000000000000000000000000000000
|
||||||
|
00000000000000000000000000000000000000000aa000aa2e7aa2ea2e00e002e02e02e000000000000000000000000000000000000000000000000000000000
|
||||||
|
0000000000000000000000000000000000000000000000002e0002e02e002e02e02e02e000000000000000000000000000000000000000000000000000000000
|
||||||
|
0000000000000000000000000000000000000000000000000e0000e00e000e00e00e00e000000000000000000000000000000000000000000000000000000000
|
||||||
2072
vacuum_gambit.p8
2072
vacuum_gambit.p8
File diff suppressed because it is too large
Load Diff
598
zotprofiling.p8
Normal file
598
zotprofiling.p8
Normal file
@ -0,0 +1,598 @@
|
|||||||
|
pico-8 cartridge // http://www.pico-8.com
|
||||||
|
version 42
|
||||||
|
__lua__
|
||||||
|
-- prof: cpu cycle counter v1.4
|
||||||
|
-- BY PANCELOR
|
||||||
|
--[[------------------------
|
||||||
|
|
||||||
|
|
||||||
|
use this cart to precisely
|
||||||
|
measure code execution time
|
||||||
|
|
||||||
|
--------------------------------
|
||||||
|
★ overview ★
|
||||||
|
--------------------------------
|
||||||
|
| tab 0 | usage guide |
|
||||||
|
| tab 1 | (internals) |
|
||||||
|
| tab 2 | your code here |
|
||||||
|
--------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
-----------------------
|
||||||
|
-- ★ usage guide ★ --
|
||||||
|
-----------------------
|
||||||
|
|
||||||
|
|
||||||
|
웃: i have two code snippets;
|
||||||
|
which one is faster?
|
||||||
|
|
||||||
|
🐱: edit the last tab with your
|
||||||
|
snippets, then run the cart.
|
||||||
|
it will tell you precisely
|
||||||
|
how much cpu it takes to
|
||||||
|
run each snippet.
|
||||||
|
|
||||||
|
the results are also copied
|
||||||
|
to your clipboard.
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
웃: what do the numbers mean?
|
||||||
|
|
||||||
|
🐱: the cpu cost is reported
|
||||||
|
as lua and system cycle
|
||||||
|
counts. look up stat(1)
|
||||||
|
and stat(2) for more info.
|
||||||
|
|
||||||
|
if you're not sure, just
|
||||||
|
look at the first number.
|
||||||
|
lower is faster (better)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
웃: why "{locals={9}}"
|
||||||
|
in the example?
|
||||||
|
|
||||||
|
🐱: accessing local variables
|
||||||
|
is faster than global vars.
|
||||||
|
|
||||||
|
so if your test involves
|
||||||
|
local variables, simulate
|
||||||
|
this by passing them in:
|
||||||
|
|
||||||
|
prof(function(a)
|
||||||
|
sqrt(a)
|
||||||
|
end,{ locals={9} })
|
||||||
|
|
||||||
|
/!\ /!\ /!\ /!\
|
||||||
|
local values from outside
|
||||||
|
the current scope are also
|
||||||
|
slower to access! example:
|
||||||
|
|
||||||
|
global = 4
|
||||||
|
local outer = 4
|
||||||
|
prof(function(x)
|
||||||
|
local _ = x --fast
|
||||||
|
end,function(x)
|
||||||
|
local _ = outer --slow
|
||||||
|
end,function(x)
|
||||||
|
local _ = global --slow
|
||||||
|
end,{ locals={4} })
|
||||||
|
/!\ /!\ /!\ /!\
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
웃: can i do "prof(myfunc)"?
|
||||||
|
|
||||||
|
🐱: no, this sometimes gives
|
||||||
|
wrong results! always use
|
||||||
|
inline functions:
|
||||||
|
|
||||||
|
prof(function()
|
||||||
|
--code for myfunc here
|
||||||
|
end)
|
||||||
|
|
||||||
|
as an example, "prof(sin)"
|
||||||
|
reports "-2" -- wrong! but
|
||||||
|
"prof(function()sin()end)"
|
||||||
|
correctly reports "4"
|
||||||
|
|
||||||
|
(see the technical notes at
|
||||||
|
the start of the next tab
|
||||||
|
for a brief explanation.
|
||||||
|
technically, "prof(myfunc)"
|
||||||
|
will work if myfunc was made
|
||||||
|
by the user, but you will
|
||||||
|
risk confusing yourself)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
---------------
|
||||||
|
★ method 2 ★
|
||||||
|
---------------
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
this cart is based on
|
||||||
|
code by samhocevar:
|
||||||
|
https://www.lexaloffle.com/bbs/?pid=60198#p
|
||||||
|
|
||||||
|
if you do this method, be very
|
||||||
|
careful with local/global vars.
|
||||||
|
it's very easy to accidentally
|
||||||
|
measure the wrong thing.
|
||||||
|
|
||||||
|
here's an example of how to
|
||||||
|
measure cycles (ignoring this
|
||||||
|
cart and using the old method)
|
||||||
|
|
||||||
|
function _init()
|
||||||
|
local a=11.2 -- locals
|
||||||
|
|
||||||
|
local n=1024
|
||||||
|
flip()
|
||||||
|
local tot1,sys1=stat(1),stat(2)
|
||||||
|
for i=1,n do end --calibrate
|
||||||
|
local tot2,sys2=stat(1),stat(2)
|
||||||
|
for i=1,n do local _=sqrt(a) end --measure
|
||||||
|
local tot3,sys3=stat(1),stat(2)
|
||||||
|
|
||||||
|
function cyc(t0,t1,t2) return ((t2-t1)-(t1-t0))*128/n*256/stat(8)*256 end
|
||||||
|
local lua = cyc(tot1-sys1,tot2-sys2,tot3-sys3)
|
||||||
|
local sys = cyc(sys1,sys2,sys3)
|
||||||
|
print(lua.."+"..sys.."="..(lua+sys).." (lua+sys)")
|
||||||
|
end
|
||||||
|
|
||||||
|
run this once, see the results,
|
||||||
|
then change the "measure" line
|
||||||
|
to some other code you want
|
||||||
|
to measure.
|
||||||
|
|
||||||
|
note: wrapping the code inside
|
||||||
|
"_init()" is required, otherwise
|
||||||
|
builtin functions like "sin"
|
||||||
|
will be measured wrong.
|
||||||
|
(the reason is explained at
|
||||||
|
the start of the next tab)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
---------------
|
||||||
|
★ method 3 ★
|
||||||
|
---------------
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
another way to measure cpu cost
|
||||||
|
is to run something like this:
|
||||||
|
|
||||||
|
function _draw()
|
||||||
|
cls(1)
|
||||||
|
local x=9
|
||||||
|
for i=1,1000 do
|
||||||
|
local a=sqrt(x) --snippet1
|
||||||
|
-- local b=x^0.5 --snippet2
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
while running, press ctrl-p to
|
||||||
|
see the performance monitor.
|
||||||
|
the middle number shows how much
|
||||||
|
of cpu is being used, as a
|
||||||
|
fraction. (0.60 = 60% used)
|
||||||
|
|
||||||
|
now, change the comments on the
|
||||||
|
two code snippets inside _draw()
|
||||||
|
and re-run. compare the new
|
||||||
|
result with the old to determine
|
||||||
|
which snippet is faster.
|
||||||
|
|
||||||
|
note: every loop iteration costs
|
||||||
|
an additional 2 cycles, so the
|
||||||
|
ratio of the two fractions will
|
||||||
|
not match the ratio of the
|
||||||
|
execution time of the snippets.
|
||||||
|
but this method can quickly tell
|
||||||
|
you which snippet is faster.
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
]]
|
||||||
|
|
||||||
|
-->8
|
||||||
|
--[[ profiler.lua
|
||||||
|
more info: https://www.lexaloffle.com/bbs/?tid=46117
|
||||||
|
|
||||||
|
usage:
|
||||||
|
prof(function()
|
||||||
|
memcpy(0,0x200,64)
|
||||||
|
end,function()
|
||||||
|
poke4(0,peek4(0x200,16))
|
||||||
|
end)
|
||||||
|
|
||||||
|
passing locals:
|
||||||
|
prof(
|
||||||
|
function(a,b)
|
||||||
|
local c=(a+1)*(b+1)-1
|
||||||
|
end,
|
||||||
|
function(a,b)
|
||||||
|
local c=a*b+a+b
|
||||||
|
end,
|
||||||
|
{locals={3,5}}
|
||||||
|
)
|
||||||
|
|
||||||
|
getting global/local variables exactly right
|
||||||
|
is very tricky; you should always use inline
|
||||||
|
functions like above; if you try e.g. prof(sin)
|
||||||
|
the results will be wrong.
|
||||||
|
|
||||||
|
|
||||||
|
# minutiae / notes to self:
|
||||||
|
---------------------------
|
||||||
|
doing this at top-level is awkward:
|
||||||
|
for _=1,n do end -- calibrate
|
||||||
|
for _=1,n do sin() end -- measure
|
||||||
|
b/c sin is secretly local at top-level,
|
||||||
|
so it gives a misleading result (3 cycles).
|
||||||
|
do it inside _init instead for a
|
||||||
|
more representative result (4 cycles).
|
||||||
|
|
||||||
|
## separate issue:
|
||||||
|
------------------
|
||||||
|
if you call prof(sin), it gives the wrong result (-2 cycles) because
|
||||||
|
it's comparing sin() against noop() (not truly nothing).
|
||||||
|
but we want the noop() there for normal inline prof() calls,
|
||||||
|
to avoid measuring the cost of the indirection
|
||||||
|
(calling func() from inside prof() is irrelevant to
|
||||||
|
how cpu-expensive func()'s body is)
|
||||||
|
]]
|
||||||
|
|
||||||
|
-- prof(fn1,fn2,...,fnN,[opts])
|
||||||
|
--
|
||||||
|
-- opts.locals: values to pass
|
||||||
|
-- opts.name: text label
|
||||||
|
-- opts.n: number of iterations
|
||||||
|
function prof(...)
|
||||||
|
cls()
|
||||||
|
local funcs={...}
|
||||||
|
local opts=type(funcs[#funcs])=="table" and deli(funcs) or {}
|
||||||
|
|
||||||
|
-- build output string
|
||||||
|
local msg=""
|
||||||
|
local function log(s)
|
||||||
|
msg..=s.."\n"
|
||||||
|
end
|
||||||
|
|
||||||
|
if opts.name then
|
||||||
|
log("prof: "..opts.name)
|
||||||
|
end
|
||||||
|
for fn in all(funcs) do
|
||||||
|
local dat=prof_one(fn,opts)
|
||||||
|
log(sub(" "..dat.total,-3)
|
||||||
|
.." ("
|
||||||
|
..dat.lua
|
||||||
|
.." lua, "
|
||||||
|
..dat.sys
|
||||||
|
.." sys)")
|
||||||
|
end
|
||||||
|
|
||||||
|
-- copy to clipboard
|
||||||
|
printh(msg,"@clip")
|
||||||
|
-- print + pause
|
||||||
|
while btn() == 0 do
|
||||||
|
flip()
|
||||||
|
end
|
||||||
|
color(6)
|
||||||
|
stop(msg)
|
||||||
|
end
|
||||||
|
|
||||||
|
function prof_one(func, opts)
|
||||||
|
opts = opts or {}
|
||||||
|
local n = opts.n or 0x200 --how many times to call func
|
||||||
|
local locals = opts.locals or {} --locals to pass func
|
||||||
|
|
||||||
|
-- we want to type
|
||||||
|
-- local m = 0x80_0000/n
|
||||||
|
-- but 8MHz is too large to fit in a pico-8 number,
|
||||||
|
-- so we do (0x80_0000>>16)/(n>>16) instead
|
||||||
|
-- (n is always an integer, so n>>16 won't lose any bits)
|
||||||
|
local m = 0x80/(n>>16)
|
||||||
|
assert(0x80/m << 16 == n, "n is too small") -- make sure m didn't overflow
|
||||||
|
local fps = stat(8)
|
||||||
|
|
||||||
|
-- given three timestamps (pre-calibration, middle, post-measurement),
|
||||||
|
-- calculate how many more CPU cycles func() took compared to noop()
|
||||||
|
-- derivation:
|
||||||
|
-- T := ((t2-t1)-(t1-t0))/n (frames)
|
||||||
|
-- this is the extra time for each func call, compared to noop
|
||||||
|
-- this is measured in #-of-frames -- it will be a small fraction for most ops
|
||||||
|
-- F := 1/30 (seconds/frame) (or 1/60 if this test is running at 60fps)
|
||||||
|
-- this is just the framerate that the tests run at, not the framerate of your game
|
||||||
|
-- M := 256*256*128 = 0x80_0000 = 8MHz (cycles/second)
|
||||||
|
-- (PICO-8 runs at 8MHz; see https://www.lexaloffle.com/dl/docs/pico-8_manual.html#CPU)
|
||||||
|
-- cycles := T frames * F seconds/frame * M cycles/second
|
||||||
|
-- optimization / working around pico-8's fixed point numbers:
|
||||||
|
-- T2 := T*n = (t2-t1)-(t1-t0)
|
||||||
|
-- M2 := M/n = (M>>16)/(n>>16) := m (e.g. when n is 0x1000, m is 0x800)
|
||||||
|
-- cycles := T2*M2*F
|
||||||
|
local function cycles(t0,t1,t2)
|
||||||
|
local diff = (t2-t1)-(t1-t0)
|
||||||
|
local e1 = "must use inline functions -- see usage guide"
|
||||||
|
assert(0<=diff,e1)
|
||||||
|
local thresh = 0x7fff.ffff/(m/fps)
|
||||||
|
local e2 = "code is too large or slow -- try profiling manually with stat(1)"
|
||||||
|
assert(diff<=thresh,e2)
|
||||||
|
return diff*(m/fps)
|
||||||
|
end
|
||||||
|
|
||||||
|
local noop = function() end -- this must be local, because func is local
|
||||||
|
flip() --avoid flipping mid-measurement
|
||||||
|
local atot,asys=stat(1),stat(2)
|
||||||
|
for _=1,n do noop(unpack(locals)) end -- calibrate
|
||||||
|
local btot,bsys=stat(1),stat(2)
|
||||||
|
for _=1,n do func(unpack(locals)) end -- measure
|
||||||
|
local ctot,csys=stat(1),stat(2)
|
||||||
|
|
||||||
|
-- gather results
|
||||||
|
local tot=cycles(atot,btot,ctot)
|
||||||
|
local sys=cycles(asys,bsys,csys)
|
||||||
|
return {
|
||||||
|
lua=tot-sys,
|
||||||
|
sys=sys,
|
||||||
|
total=tot,
|
||||||
|
}
|
||||||
|
end
|
||||||
|
|
||||||
|
-->8
|
||||||
|
-- your code here
|
||||||
|
|
||||||
|
--edit me:
|
||||||
|
|
||||||
|
function linefill(ax,ay,dx,dy,r,c)
|
||||||
|
if(c) color(c)
|
||||||
|
-- avoid overflow
|
||||||
|
-- credits: https://www.lexaloffle.com/bbs/?tid=28999
|
||||||
|
local d,n = abs(dx),abs(dy)
|
||||||
|
if (d<n) d,n=n,d
|
||||||
|
n/=d
|
||||||
|
d*=sqrt(n*n+1)
|
||||||
|
if(d<0.001) return
|
||||||
|
local ca,sa=dx/d,-dy/d
|
||||||
|
|
||||||
|
-- polygon points
|
||||||
|
local s={
|
||||||
|
{0,-r},{d,-r},{d,r},{0,r}
|
||||||
|
}
|
||||||
|
local u,v,spans=s[4][1],s[4][2],{}
|
||||||
|
local x0,y0=ax+u*ca+v*sa,ay-u*sa+v*ca
|
||||||
|
for i=1,4 do
|
||||||
|
local u,v=unpack(s[i])
|
||||||
|
local x1,y1=ax+u*ca+v*sa,ay-u*sa+v*ca
|
||||||
|
local _x1,_y1=x1,y1
|
||||||
|
if(y0>y1) x0,y0,x1,y1=x1,y1,x0,y0
|
||||||
|
local dx=(x1-x0)/(y1-y0)
|
||||||
|
if(y0<0) x0-=y0*dx y0=-1
|
||||||
|
local cy0=y0\1+1
|
||||||
|
-- sub-pix shift
|
||||||
|
x0+=(cy0-y0)*dx
|
||||||
|
for y=y0\1+1,min(y1\1,127) do
|
||||||
|
-- open span?
|
||||||
|
local span=spans[y]
|
||||||
|
if span then
|
||||||
|
rectfill(x0,y,span,y)
|
||||||
|
else
|
||||||
|
spans[y]=x0
|
||||||
|
end
|
||||||
|
x0+=dx
|
||||||
|
end
|
||||||
|
x0,y0=_x1,_y1
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function quickzot(x,y,r,dx,dy,hot,warm,cold)
|
||||||
|
local x0, y0, r2 = x-dx, y-dy, r/2
|
||||||
|
rectfill(x0-0.5-r2, y0-0.5-r2, x0+r2+0.5, y0+r2+0.5, cold)
|
||||||
|
local a = atan2(dx,dy)-0.25
|
||||||
|
local tdx,tdy=cos(a), sin(a)
|
||||||
|
for i=-r*0.65,r*0.65,0.65 do
|
||||||
|
line(x0+i*tdx, y0+i*tdy, x+i*tdx, y+i*tdy, warm)
|
||||||
|
end
|
||||||
|
rectfill(x-r2,y-r2,x+r2,y+r2,hot)
|
||||||
|
end
|
||||||
|
|
||||||
|
function zot(x,y,r,dx,dy,hot,warm,cold)
|
||||||
|
local x0,y0,sdx,sdy=x-dx,y-dy,sgn(dx),sgn(dy)
|
||||||
|
local rx,ry=r*sdx,r*sdy
|
||||||
|
if cold then
|
||||||
|
rectfill(x0-rx,y0-ry,x0+rx,y0+ry,cold)
|
||||||
|
local sdxh,sdyh=sdx/2,sdy/2
|
||||||
|
line(x0-rx-sdxh,y0+ry+sdyh,x-rx,y+ry,cold)
|
||||||
|
line(x0+rx+sdxh,y0-ry-sdyh,x+rx,y-ry,cold)
|
||||||
|
end
|
||||||
|
for i=-r,r do
|
||||||
|
line(x0+i*sdx,y0-ry,x+rx,y-i*sdy,warm)
|
||||||
|
line(x0-rx,y0+i*sdy,x-i*sdx,y+ry,warm)
|
||||||
|
end
|
||||||
|
for i=-r,r do
|
||||||
|
line(x0,y0,x+rx,y-i*sdy,hot)
|
||||||
|
line(x0,y0,x-i*sdx,y+ry,hot)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function respr(x,y,dx,dy,r,s)
|
||||||
|
if (r==0) r=0.5
|
||||||
|
local n=ceil(max(abs(dx),abs(dy))/r/2)
|
||||||
|
local d1x,d1y=dx/n,dy/n
|
||||||
|
r/=4
|
||||||
|
for i=1,n do
|
||||||
|
spr(s,x,y,r,r)
|
||||||
|
x+=d1x
|
||||||
|
y+=d1y
|
||||||
|
end
|
||||||
|
pal()
|
||||||
|
spr(s,x,y,r,r)
|
||||||
|
end
|
||||||
|
|
||||||
|
darkpal = {
|
||||||
|
[7]=4,
|
||||||
|
[9]=2,
|
||||||
|
[10]=4,
|
||||||
|
[8]=2
|
||||||
|
}
|
||||||
|
|
||||||
|
prof(function(dx, dy, r)
|
||||||
|
linefill(32,32,dx,dy,r,10)
|
||||||
|
end,function(dx, dy, r)
|
||||||
|
quickzot(96,32,r,dx,dy,10,9,8)
|
||||||
|
end,function(dx,dy,r)
|
||||||
|
zot(32,96,r,dx,dy,10,9,8)
|
||||||
|
end,function(dx,dy,r)
|
||||||
|
pal(darkpal)
|
||||||
|
respr(96,96,dx,dy,r,r)
|
||||||
|
end,{ locals={4,-9,2} })
|
||||||
|
|
||||||
|
-- "locals" (optional) are
|
||||||
|
-- passed in as args. see the
|
||||||
|
-- usage guide for details.
|
||||||
|
|
||||||
|
__gfx__
|
||||||
|
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|
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|
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||||||
|
0000000000000000000000000000000009aaaa800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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||||||
|
00000000000000000000000000000000008888000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
||||||
|
__label__
|
||||||
|
00006660000000006660000000006660000006006000606066600000066060600660060000000000000000000000000000000000000000000000000000000000
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00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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||||||
|
|
||||||
|
__sfx__
|
||||||
|
030100003052500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505005050050500505
|
||||||
Reference in New Issue
Block a user