3 Commits

Author SHA1 Message Date
5634fcf4a4 recolor!
this looks terrible
2023-10-01 16:00:00 -07:00
447a1bedd0 set up candidate "tyrian" palette 2023-10-01 15:47:01 -07:00
0f7c7a810b remove gradients from meters, make vertmeter segmented 2023-10-01 15:41:58 -07:00
8 changed files with 624 additions and 5260 deletions

2
.gitignore vendored
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.DS_Store
.vscode/settings.json

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pico-8 cartridge // http://www.pico-8.com
version 41
__lua__
-- vacuum gambit automatic brake test
-- by kistaro windrider
function usplit(str)
return unpack(split(str))
end
function csv(s)
local ret = split(s, "\n")
for i, v in ipairs(ret) do
ret[i] = type(v) == "string" and split(v) or { v }
end
return ret
end
-- generate standard "overlay"
-- constructor for type tt.
-- if more is defined, generated
-- new calls more(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, more)
local mt, oldnew = { __index = tt }, tt.new
tt.new = function(ret)
if (not ret) ret = {}
if (more) more(ret)
if (oldnew) oldnew(ret)
setmetatable(ret, mt)
return ret
end
end
function _init()
pal(1,129,1)
the_ship = ship.new()
constraints:setup()
slomo = 1
sloc = 0
reroll()
end
function reroll()
frames=0
sloc=0
the_ship:reroll()
end
function _update60()
if (btnp(4)) reroll()
if (btnp(5)) constraints:cycle()
if (btnp(3)) slomo <<= 1
if (btnp(2)) slomo >>= 1
slomo = (slomo < 1) and 1 or (slomo > 8192) and 8192 or slomo
sloc += 1
if sloc >= slomo then
frames += 1
the_ship:update()
sloc=0
end
end
function _draw()
cls(1)
constraints:draw()
the_ship:draw()
print("frames: " .. frames, 4, 64, 7)
print("speed: 1/" .. slomo, 8, 70, 7)
print("thrust: ".. actual_t, 4, 80, 7)
meter(80, 80, 128, 84, actual_t/the_ship.thrust/2)
print("dx: ".. the_ship.dx, 20, 86, 7)
meter(80, 86, 128, 90, the_ship.dx/the_ship.maxspd/2)
print("x: "..the_ship.x, 24, 92, 7)
print("bx: "..gbx, 20, 98, 7)
print("xmin:"..tostr(constraints.xmin), 12, 108, 7)
print("xmax:"..tostr(constraints.xmax), 12, 114, 7)
end
function meter(x0, y0, x1, y1, frac)
local c = 11
if frac < 0 then
frac = -frac
c = 8
end
local range = x1-x0
local midpoint = x0 + (range/2)
rectfill(x0, y0-1, x0, y1+1, 13)
rectfill(midpoint, y0-1, midpoint, y1 + 1, 13)
local width = range * frac
if (width ~= 0) rectfill(x0, y0, x0 + width, y1, c)
end
-->8
-- ship
ship = {
maxspd=4,
thrust=0.25,
drag=0.0625,
y=32,
}
mknew(ship)
function ship:reroll()
self.x=rnd(128)
self.dx=rnd(2*self.maxspd)-self.maxspd
end
function ship:draw()
if self.x < -7 then
spr(2, 0, self.y-7)
spr(2, 0, self.y+8)
elseif self.x > 127 then
spr(2, 120, self.y-7, 1, 1, true)
spr(2, 120, self.y+8, 1, 1, true)
else
spr(1,self.x,self.y)
end
--if (self.dx == 0) return
local bd, f = brake_dist(self.dx, self.thrust + self.drag)
gbx = self.x+bd
spr(3, gbx-2,self.y-2)
print(tostr(f), gbx-2, self.y - 8, 14)
end
function calc_velocity(v0, t, vmax, drag)
v0 = mid(v0 + t, vmax, -vmax)
return v0 - mid(drag, -drag, v0)
end
function ship:update()
local t = btn(0) and -1 or btn(1) and 1 or 0
t *= self.thrust
t = constraints:constrain(self, t)
-- t = constraints:constrain(self, t)
-- t = constraints:constrain(self, t)
local s = calc_velocity(self.dx, t, self.maxspd, self.drag)
self.x += s
self.dx = s
actual_t = t
end
-->8
-- constraints
constraints = {
ymin=20,
ymax=52,
color=10
}
function constraints:constrain(s, want)
self.color=10
if (not self.xmin) return want
-- bmx: brake max
local v1, bmx = calc_velocity(s.dx, want, s.maxspd, s.drag), s.thrust + s.drag
local bd, bf = brake_dist(v1, bmx)
local bx, txm = s.x + bd + v1, self.xmax
if bx < self.xmin then
-- predicted brake point left
-- of xmin; apply max reverse
-- thrust, treat xmin as our
-- max target, and handle
-- overbraking by coalescing
-- with past +xmax case
self.color = 9
want = s.thrust
txm = self.xmin
v1 = calc_velocity(s.dx, want, s.maxspd, s.drag)
bd, bf = brake_dist(v1, bmx)
bx = bd + s.x + v1
end
if (bx <= txm) return want
self.color = 8
local overage = bx - txm
want -= overage/max(bf,1)
if (want < -s.thrust) want = -s.thrust
return want
end
function brake_dist(v0, brake_max)
local tri_frames = abs(v0\brake_max)
local chunks = tri_frames * (tri_frames - 1) >> 1
local chunk_zone = chunks * brake_max
local overage = abs(v0) - tri_frames * brake_max
return (chunk_zone + overage * (tri_frames + 1)) * sgn(v0), (overage > 0) and tri_frames + 1 or tri_frames
end
function constraints:cycle()
if self.ctype=="bounds" then
self.ctype="point"
elseif self.ctype=="point" then
self.ctype="off"
else
self.ctype="bounds"
end
self:setup()
end
function constraints:setup()
if self.ctype=="point" then
self.xmin = 64
self.xmax = 64
elseif self.ctype=="bounds" then
self.xmin = 32
self.xmax = 96
else
self.xmin = nil
self.xmax = nil
end
end
function constraints:draw()
if (not self.xmin) return
rect(self.xmin, self.ymin, self.xmax, self.ymax, self.color)
end
-->8
-- fx
-- todo: spark ring buffer
__gfx__
000000008000000000080000a000a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000006666000080000009090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000067777600800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000675555758008888009090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
000000006750007508000000a000a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000067777500080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000005555000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

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Trans rights.

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@ -75,7 +75,7 @@ function updategame()
edeaths = {} edeaths = {}
for ip, ps in ipairs(pships) do for ip, ps in ipairs(pships) do
for ie, eb in ipairs(ebullets) do for ie, eb in ipairs(ebullets) do
if collides(hurtbox(ps), hurtbox(eb)) then if collides(hurtobx(ps), hurtbox(eb)) then
if (eb:hitship(ps)) add(edeaths, ie) if (eb:hitship(ps)) add(edeaths, ie)
if ps:hitbullet(eb) then if ps:hitbullet(eb) then
add(pdeaths, ip) add(pdeaths, ip)

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pico-8 cartridge // http://www.pico-8.com
version 41
__lua__
-- the parser
parser = {}
mknew(parser)
-- calls parse_into with a nop
-- emit function.
function parser:parse(str)
self:parse_into(str, function() end)
end
-- read a file of commands and
-- execute them, emitting the
-- results from each call into
-- `emit` as a table per row.
--
-- a "command" is a method on
-- self. a row alternates
-- commands with args. when
-- calling a command, it also
-- gets a table of previous
-- results as the first arg.
-- args are split on ','.
function parser:parse_into(str, emit)
for row in all(split(str, "\n")) do
local prev = {}
local sectors = split(row, ":")
for i=1,#sectors,2 do
local x = self[sectors[i]](self, prev, usplit(sectors[i+1]))
if (x) add(prev, x)
end
emit(prev)
end
end
-- saves prev[sel] as self.name.
-- if sel is unspecified, saves
-- all of prev (as a table).
function parser:saveas(prev, name, sel)
self[name] = sel and prev[sel] or prev
end
-- returns its args, ignoring
-- prev. Used to stuff things
-- into prev. args are packed
-- if there's multiple.
function parser:val(_, ...)
local ret := pack(...)
if (#ret == 1) return ret[1]
return ret
end
function parser:bind(_, fn, ...)
local f = self[fn]
return function()
f(...)
end
end

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