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pico8/alain_example.p8
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pico-8 cartridge // http://www.pico-8.com
version 42
__lua__
--example with time
-- player object
p={
x=8,
y=8,
w=6,
h=6,
d=true,
bucket=0,
debug="",
--draw function that also displays debug msgs. don't do this, set debug outside of player
draw=function(self)
print(self.debug)
self.debug = ""
spr(13-self.bucket,0,120)
spr(0,self.x,self.y)
end,
--move and collision combined in one function
move=function(self, x, y)
cx=self.x+(x*(1.5-(self.bucket/5)))
cy=self.y+(y*(1.5-(self.bucket/5)))
-- based on https://gamedev.docrobs.co.uk/first-steps-in-pico-8-easy-collisions-with-map-tiles
collide = false
cand={}
for i=cx,cx+self.w,self.w do
if fget(mget(i/8,cy/8),0) or fget(mget(i/8,(cy+self.h)/8),0) then
collide = true
add(cand,mget(i/8,cy/8,0))
add(cand,mget(i/8,(cy+self.h)/8))
-- self.debug = self.debug.."why"
end
end
for i=cy,cy+self.h,self.h do
if fget(mget(cx/8,i/8),0) or fget(mget((cx+self.w)/8,i/8),0) then
collide = true
add(cand,mget(cx/8,i/8,0))
add(cand,mget((cx+self.w)/8,i/8))
-- self.debug = self.debug.."why"
end
end
if not collide then
self.x = cx
self.y = cy
else
for v in all(cand) do
self.debug = self.debug..v
if fget(v,2) do
--empty bucket
self.bucket = 0
elseif fget(v,7) do
--fill bucket
self.bucket +=b.s
r=0
if self.bucket > 5 then
b.s = self.bucket - 5
self.bucket = 5
else
b:move()
end
end
end
end
camera(-64+self.x, -64+self.y)
end
}
--bucket object?
b={
x=16,
y=48,
s=0,
draw=function(self)
--spr(14-self.s,self.x,self.y)
mset(self.x/8,self.y/8,14-self.s)
end,
update=function(self,t)
self.s +=t
if (self.s>5) then
e=true
self.s = 5
end
end,
move=function(self)
repeat
x=rnd(128)
y=rnd(64)
until not (fget(mget(x/8,y/8),0)) or (fget(mget(x/8,y/8),1))
mset(self.x/8,self.y/8,1)
self.x = x
self.y = y
self.s = 0
end
}
e = false
win=false
function _init()
stime = stat(95)+stat(94)*60
t=time()
camera()
end
function _update()
t=time()*5
-- using modulo operator to loop action through time
y=t % 16 - 8
--p.debug = p.debug..y
if (y > 0) then
mset(5,1+y,2)
else
mset(5,1+8+y,7)
end
x=0
y=0
if(btn(⬅️))x-=2
if(btn(➡️))x+=2
if(btn(⬇️))y+=2
if(btn(⬆️))y-=2
p:move(x,y)
b:update(.025)
end
function _draw()
cls()
if false then
print("you lost")
else
map(0,0,0,0,32,32)
p:draw()
b:draw()
end
end
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