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Remove unnecessary nils and falses

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Pyrex 2022-12-30 23:30:05 -08:00
parent 4987e71deb
commit ba14cc18f2
1 changed files with 57 additions and 66 deletions
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chameleonic.p8
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@ -117,7 +117,7 @@ function _rast(
if (x0<x1) sx=1 if (x0<x1) sx=1
if (y0<y1) sy=1 if (y0<y1) sy=1
local done=false,err local done,err
if dx>dy then if dx>dy then
err=dx/2.0 err=dx/2.0
while x0!=x1 do while x0!=x1 do
@ -252,8 +252,7 @@ end
normpal = {[1]=0,[8]=0,[14]=0} normpal = {[1]=0,[8]=0,[14]=0}
pitpal = {[8]=0,[13]=3,[4]=3,[7]=3} pitpal = {[8]=0,[13]=3,[4]=3,[7]=3}
function level:draw() function level:draw()
fillp(0b1111111110111111) cls(5)
rectfill(0,0,127,127,0x55)
fillp() fillp()
pal(normpal) pal(normpal)
map( map(
@ -289,7 +288,7 @@ function level:busy()
for _,crate in pairs(self._crates) do for _,crate in pairs(self._crates) do
if (#crate.todo>0) return true if (#crate.todo>0) return true
end end
return false return
end end
function level:update() function level:update()
@ -352,7 +351,7 @@ function level:recollide()
local mxy=_mix(mx,my) local mxy=_mix(mx,my)
self._coll[mxy]= self._coll[mxy]=
fget(self:_mget(mx,my),7) or fget(self:_mget(mx,my),7) or
self._crates[mxy]!=nil self._crates[mxy]
end end
end end
end end
@ -390,8 +389,7 @@ function level:reanchor()
end end
end end
local anch_old=self._anch local anch_old=self._anch or {}
if (anch_old==nil) anch_old={}
for _,old in pairs(anch_old) do for _,old in pairs(anch_old) do
old.dropped=true old.dropped=true
end end
@ -429,19 +427,18 @@ function level:anchor_points()
keys=all(self._anch_keys) keys=all(self._anch_keys)
return function() return function()
local k=keys() local k=keys()
if (k==nil) return nil if (k) return self._anch[k.key]
return self._anch[k.key]
end end
end end
function level:get_open_pit(mx,my) function level:get_open_pit(mx,my)
local pit=self._pits[_mix(mx,my)] local pit=self._pits[_mix(mx,my)]
if (pit and pit.contents==nil) return pit if (pit and not pit.contents) return pit
end end
function level:spawn_exit() function level:spawn_exit()
self._wins={} self._wins={}
local spawned=false local spawned
local spawn_at=function(x,y) local spawn_at=function(x,y)
if (self:_mget(x,y)!=1) return if (self:_mget(x,y)!=1) return
assert(not spawned,x..","..y) assert(not spawned,x..","..y)
@ -470,7 +467,7 @@ function level:spawn_exit()
end end
function level:mcoll(mx,my) function level:mcoll(mx,my)
return self._coll[_mix(mx,my)]!=false return self._coll[_mix(mx,my)]
end end
function level:pcoll(px,py) function level:pcoll(px,py)
@ -557,12 +554,12 @@ function level:can_move(
if (is_player and self:win_at(mx1,my1)) return true if (is_player and self:win_at(mx1,my1)) return true
if (is_player and self:get_open_pit(mx1,my1)) return wrongbleep:adequately_warned() if (is_player and self:get_open_pit(mx1,my1)) return wrongbleep:adequately_warned()
if (self:mcoll(mx1,my1) or player.x==mx1 and player.y==my1) return false if (self:mcoll(mx1,my1) or player.x==mx1 and player.y==my1) return
if player.rope then if player.rope then
local w,h=1.2,0.2 local w,h=1.2,0.2
if (dmx==0) w,h=0.2,1.2 if (dmx==0) w,h=0.2,1.2
if (player.rope:collide_mrect(mx0+ropecheck[dmx+2],my0+ropecheck[dmy+2],w,h,exclude_src,exclude_dst)) return false if (player.rope:collide_mrect(mx0+ropecheck[dmx+2],my0+ropecheck[dmy+2],w,h,exclude_src,exclude_dst)) return
end end
return true return true
@ -604,7 +601,7 @@ function player:reinit(x,y)
self.px,self.py=0,0 self.px,self.py=0,0
self.todo={} self.todo={}
self.cooldown=4 self.cooldown=4
self.rope=nil self.rope=nil -- don't elide, needs to be cleared if present
self.fall_frame=0 self.fall_frame=0
@ -856,9 +853,9 @@ function rope:update()
if (self.state.frame>=3) self.state={name="latched"} if (self.state.frame>=3) self.state={name="latched"}
elseif self.state.name=="latched" then elseif self.state.name=="latched" then
if (self.latch==nil) wrongbleep:bleep(5) self:destroy() return if (not self.latch) wrongbleep:bleep(5) self:destroy() return
if self.latch and self.latch.rec then if self.latch.rec then
self:drag_src( self:drag_src(
self.latch.rec.mx+0.5+self.latch.ax_offset, self.latch.rec.mx+0.5+self.latch.ax_offset,
self.latch.rec.my+0.5+self.latch.ay_offset self.latch.rec.my+0.5+self.latch.ay_offset
@ -920,7 +917,7 @@ end
function rope:draw(artificial_px,artificial_py) function rope:draw(artificial_px,artificial_py)
local points,highlight=self:_tug(true) local points,highlight=self:_tug(true)
local n,perc_to_show,from_end = self.state.name,1.0,false local n,perc_to_show,from_end = self.state.name,1.0
if (n=="done") return if (n=="done") return
if (n=="cast") perc_to_show=self.state.frame/2 if (n=="cast") perc_to_show=self.state.frame/2
if (n=="destroy") perc_to_show=(1.0-self.state.frame/4)^2 if (n=="destroy") perc_to_show=(1.0-self.state.frame/4)^2
@ -1058,8 +1055,7 @@ end
function rope:relax() function rope:relax()
local n0=self.src local n0=self.src
while true do while n0 do
if (n0==nil) break
if n0.associated_with and n0.associated_with.dropped then if n0.associated_with and n0.associated_with.dropped then
for i in level:anchor_points() do for i in level:anchor_points() do
if i.ax==n0.ax and i.ay==n0.ay then if i.ax==n0.ax and i.ay==n0.ay then
@ -1075,26 +1071,25 @@ function rope:relax()
local n0=self.src local n0=self.src
while true do while true do
local n1=n0.next local n1=n0.next
if (n1==nil) break if (not n1) break
local n2=n1.next local n2=n1.next
if n0.ax==n1.ax and n0.ay==n1.ay then if n0.ax==n1.ax and n0.ay==n1.ay then
n0.next=n2 n0.next=n2
if (n2!=nil) n2.prev=n0 if (n2) n2.prev=n0
else else
n0=n0.next n0=n0.next
end end
end end
local n0=self.src local n0=self.src
while true do while n0 do
if (n0==nil) return
local n1=n0.next local n1=n0.next
if (n1==nil) return if (not n1) return
local n2=n1.next local n2=n1.next
if (n2==nil) return if (not n2) return
if n1.associated_with!=nil then if n1.associated_with then
local x0,y0=n0.ax,n0.ay local x0,y0=n0.ax,n0.ay
local x1,y1=n1.ax,n1.ay local x1,y1=n1.ax,n1.ay
@ -1130,7 +1125,7 @@ function rope:_check_sane()
local qxs,qys={},{} local qxs,qys={},{}
while true do while true do
local n1=n0.next local n1=n0.next
if (n1==nil) break if (not n1) break
_rast(qxs,qys,flr(n0.ax*2),flr(n0.ay*2),flr(n1.ax*2),flr(n1.ay*2)) _rast(qxs,qys,flr(n0.ax*2),flr(n0.ay*2),flr(n1.ax*2),flr(n1.ay*2))
n0=n1 n0=n1
@ -1152,21 +1147,21 @@ function rope:_check_sane()
end end
local function _blocked(qx,qy) local function _blocked(qx,qy)
for i in all(_possible_tiles(qx,qy)) do for i in all(_possible_tiles(qx,qy)) do
if (not level:mcoll(i.mx,i.my)) return false if (not level:mcoll(i.mx,i.my)) return
end end
return true return true
end end
-- find cases where i move through an impassable zone -- find cases where i move through an impassable zone
for i=1,#qxs do for i=1,#qxs do
if (_blocked(qxs[i],qys[i])) return false if (_blocked(qxs[i],qys[i])) return
end end
-- find cases where i am cut off diagonally -- find cases where i am cut off diagonally
for i=3,#qxs do for i=3,#qxs do
local qx1,qy1=qxs[i-1],qys[i-1] local qx1,qy1=qxs[i-1],qys[i-1]
if qx1%2==0 and qy1%2==0 then if qx1%2==0 and qy1%2==0 then
local ok=false local ok
for m0 in all(_possible_tiles(qxs[i-2],qys[i-2])) do for m0 in all(_possible_tiles(qxs[i-2],qys[i-2])) do
for m2 in all(_possible_tiles(qxs[i],qys[i])) do for m2 in all(_possible_tiles(qxs[i],qys[i])) do
local mx0,my0=m0.mx,m0.my local mx0,my0=m0.mx,m0.my
@ -1183,7 +1178,7 @@ function rope:_check_sane()
end end
end end
if (not ok) return false if (not ok) return
end end
end end
return true return true
@ -1195,8 +1190,8 @@ function would_stick(x0,y0,anchor,x2,y2)
local dx=x2-x0 local dx=x2-x0
local dy=y2-y0 local dy=y2-y0
if (x1==x0 and y1==y0) return false if (x1==x0 and y1==y0) return
if (x1==x2 and y1==y2) return false if (x1==x2 and y1==y2) return
local adx,ady local adx,ady
local x1_new,y1_new local x1_new,y1_new
@ -1255,8 +1250,6 @@ function rope:be_pushed_by(anchor,ax_old,ay_old)
ny05=anchor.ay ny05=anchor.ay
nx05=nx0+(ny05-ny0)/(ny1-ny0) * (nx1-nx0) nx05=nx0+(ny05-ny0)/(ny1-ny0) * (nx1-nx0)
-- printh("found (y): "..tostring({nx05,ny05})) -- printh("found (y): "..tostring({nx05,ny05}))
else
assert(false,"wtf?")
end end
local n05={ax=nx05,ay=ny05,associated_with=anchor,prev=n0,next=n1} local n05={ax=nx05,ay=ny05,associated_with=anchor,prev=n0,next=n1}
@ -1280,7 +1273,7 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
(anchor.ax==ax_removing and anchor.ay==ay_removing) (anchor.ax==ax_removing and anchor.ay==ay_removing)
end end
if (ax_far0==ax_far1 and ay_far0==ay_far1) return nil if (ax_far0==ax_far1 and ay_far0==ay_far1) return
if ax_far0==ax_far1 then if ax_far0==ax_far1 then
local ax_far=ax_far0 local ax_far=ax_far0
@ -1332,13 +1325,12 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
n1.ay=ay1_new n1.ay=ay1_new
local n0=n1.prev local n0=n1.prev
while true do while n0 do
if (n0==nil) break
local anch=_sweep_radar( local anch=_sweep_radar(
n0.ax,n0.ay,n1.ax,n1.ay, n0.ax,n0.ay,n1.ax,n1.ay,
n0.ax,n0.ay,ax1_old,ay1_old,ax1_new,ay1_new n0.ax,n0.ay,ax1_old,ay1_old,ax1_new,ay1_new
) )
if (anch==nil) break if (not anch) break
local n05={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n0,next=n1} local n05={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n0,next=n1}
-- printh("creating pre: "..tostring(n0.associated_with).."->"..tostring(n05.associated_with).."->"..tostring(n1.associated_with)) -- printh("creating pre: "..tostring(n0.associated_with).."->"..tostring(n05.associated_with).."->"..tostring(n1.associated_with))
n0.next=n05 n0.next=n05
@ -1347,13 +1339,12 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
end end
local n2=n1.next local n2=n1.next
while true do while n2 do
if (n2==nil) break
local anch=_sweep_radar( local anch=_sweep_radar(
n1.ax,n1.ay,n2.ax,n2.ay, n1.ax,n1.ay,n2.ax,n2.ay,
n2.ax,n2.ay,ax1_old,ay1_old,ax1_new,ay1_new n2.ax,n2.ay,ax1_old,ay1_old,ax1_new,ay1_new
) )
if (anch==nil) break if (not anch) break
local n15={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n1,next=n2} local n15={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n1,next=n2}
-- printh("creating post: "..tostring(n1.associated_with).."->"..tostring(n15.associated_with).."->"..tostring(n2.associated_with)) -- printh("creating post: "..tostring(n1.associated_with).."->"..tostring(n15.associated_with).."->"..tostring(n2.associated_with))
n1.next=n15 n1.next=n15
@ -1363,7 +1354,7 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
end end
function _stepfrom(x0,x1) function _stepfrom(x0,x1)
local done=false local done
if x0==x1 then if x0==x1 then
return function() return function()
if (done) return if (done) return
@ -1378,12 +1369,12 @@ function _stepfrom(x0,x1)
local i=flr(x0) local i=flr(x0)
local top=flr(x1) local top=flr(x1)
return function() return function()
if (done) return nil if (done) return
i+=1 i+=1
if i>top then if i>top then
done = true done = true
if (x1!=flr(x1)) return mul*x1 if (x1!=flr(x1)) return mul*x1
return nil return
end end
return mul*i return mul*i
end end
@ -1409,25 +1400,25 @@ function rope:collide_mrect(mx0,my0,mw,mh,exclude_src,exclude_dst)
while true do while true do
local n1=n0.next local n1=n0.next
if (n1==nil) return false if (not n1) return
local nd=n0 local nd=n0
for i=1,exclude_dst do for i=1,exclude_dst do
nd=nd.next nd=nd.next
if (nd==nil) return false if (not nd) return
end end
local x1,y1,x2,y2=n0.ax,n0.ay,n1.ax,n1.ay local x1,y1,x2,y2=n0.ax,n0.ay,n1.ax,n1.ay
local function _line_line(x3,y3,x4,y4) local function _line_line(x3,y3,x4,y4)
local denom=((y4-y3)*(x2-x1)-(x4-x3)*(y2-y1)) local denom=(y4-y3)*(x2-x1)-(x4-x3)*(y2-y1)
local ua= local ua=
((x4-x3)*(y1-y3)-(y4-y3)*(x1-x3))/denom ((x4-x3)*(y1-y3)-(y4-y3)*(x1-x3))/denom
if (ua<0 or ua>1) return false if (ua<0 or ua>1) return
local ub= local ub=
((x2-x1)*(y1-y3)-(y2-y1)*(x1-x3))/denom ((x2-x1)*(y1-y3)-(y2-y1)*(x1-x3))/denom
if (ub<0 or ub>1) return false if (ub<0 or ub>1) return
return true return true
end end
@ -1448,12 +1439,12 @@ function rope:tug_orientxy()
local a1=self.dst local a1=self.dst
local a0=self.dst.prev local a0=self.dst.prev
local dx=a0.ax-a1.ax local dx=a0.ax-a1.ax
local tdx=nil local tdx
if (dx>3/8) tdx=1 if (dx>3/8) tdx=1
if (dx<-3/8) tdx=-1 if (dx<-3/8) tdx=-1
local dy=a0.ay-a1.ay local dy=a0.ay-a1.ay
local tdy=nil local tdy
if abs(dy)>abs(dx)/2 then if abs(dy)>abs(dx)/2 then
if (dy>3/8) tdy=1 if (dy>3/8) tdy=1
if (dy<-3/8) tdy=-1 if (dy<-3/8) tdy=-1
@ -1494,11 +1485,11 @@ function rope:_tug(hypothetically)
end end
local latch=self.latch local latch=self.latch
if latch!=nil and latch.el=="eyehook" then if latch and latch.el=="eyehook" then
if (hypothetically) return ancs,0 if (hypothetically) return ancs,0
player.todo={{ player.todo={{
update=function(s) update=function(s)
if s.rope==nil or s.rope:done() then if not s.rope or s.rope:done() then
return true return true
end end
end end
@ -1506,7 +1497,7 @@ function rope:_tug(hypothetically)
self:destroy(true) self:destroy(true)
return true return true
end end
if latch!=nil and latch.el=="crate" then if latch and latch.el=="crate" then
local dmx,dmy= local dmx,dmy=
sgn0(latch.dx), sgn0(latch.dx),
sgn0(latch.dy) sgn0(latch.dy)
@ -1522,7 +1513,7 @@ function rope:_tug(hypothetically)
local mxa=(pull_anc.x+dmx)\8 local mxa=(pull_anc.x+dmx)\8
local mya=(pull_anc.y+dmy)\8 local mya=(pull_anc.y+dmy)\8
local invalid_move=false local invalid_move
if if
(dmx!=0 and sgn0(pull_dx)!=dmx) or (dmx!=0 and sgn0(pull_dx)!=dmx) or
(dmy!=0 and sgn0(pull_dy)!=dmy) or (dmy!=0 and sgn0(pull_dy)!=dmy) or
@ -1546,15 +1537,15 @@ function rope:_tug(hypothetically)
end end
end end
if (hypothetically) return ancs,nil if (hypothetically) return ancs
return false return
end end
function rope:_calc_push( function rope:_calc_push(
an,a0,a1,af an,a0,a1,af
) )
local ops={} local ops={}
if (an==nil) return ops if (not an) return ops
if a0.x==a1.x then if a0.x==a1.x then
-- no far side applying pressure? -- no far side applying pressure?
@ -1616,12 +1607,12 @@ function rope:_calc_push(
-- great! -- great!
else else
local crate=level:get_crate(o.mx,o.my) local crate=level:get_crate(o.mx,o.my)
if crate==nil then if crate then
break
else
if not level:can_move(false,o.mx,o.my,o.dmx,o.dmy,0,0) then if not level:can_move(false,o.mx,o.my,o.dmx,o.dmy,0,0) then
break break
end end
else
break
end end
add(ops2,o) add(ops2,o)
end end
@ -1636,7 +1627,7 @@ function rope:_anchors_simplified()
return atan2(p1.y-p0.y,p1.x-p0.x) return atan2(p1.y-p0.y,p1.x-p0.x)
end end
a=self.src a=self.src
while a!=nil do while a do
local point={ local point={
x=flr(a.ax*8+0.5),y=flr(a.ay*8+0.5), x=flr(a.ax*8+0.5),y=flr(a.ay*8+0.5),
ax=a.ax,ay=a.ay ax=a.ax,ay=a.ay
@ -1646,13 +1637,13 @@ function rope:_anchors_simplified()
if aw then if aw then
if (aw.adx==1) point.x-=1 if (aw.adx==1) point.x-=1
if (aw.ady==1) point.y-=1 if (aw.ady==1) point.y-=1
elseif a.prev==nil and l then elseif not a.prev and l then
if (l.ax_offset<0) point.x-=1 if (l.ax_offset<0) point.x-=1
if (l.ay_offset<0) point.y-=1 if (l.ay_offset<0) point.y-=1
end end
local p0,p1=points[#points-1],points[#points] local p0,p1=points[#points-1],points[#points]
if p0==nil then if not p0 then
add(points,point) add(points,point)
elseif _slope(p0,p1)==_slope(p1,point) then -- epsilon? elseif _slope(p0,p1)==_slope(p1,point) then -- epsilon?
points[#points]=point points[#points]=point