Guest program: bouncing balls
Lua Carousel » Devlog
I just received a very fun program from Origedit. Enjoy!
g=love.graphics rnd=math.random bs={} bs.gravity=10 function addb() local function dir() return (rnd()*2-1)*200 end table.insert(bs,{ x=rnd()*Safe_width, y=rnd()*Safe_height, sx=dir(), sy=dir(), r=20+rnd()*50, col={rnd(),rnd(),rnd()} }) end for i=1,30 do addb() end function movep(b,dt,p,s,max) b[p]=b[p]+b[s]*dt if b[p] < b.r then b[p]=b.r b[s]=math.abs(b[s]) elseif b[p] > max-b.r then b[p]=max-b.r b[s]=-math.abs(b[s]) end end function bdist(a,b) return math.pow(math.pow(a.x-b.x,2)+math.pow(a.y-b.y,2),0.5) end function bbounce(b, bb,d) local dx,dy=b.x-bb.x,b.y-bb.y local k= ((b.sx-bb.sx)*dx+ (b.sy-bb.sy)*dy)/ d/d local h=-(d-b.r-bb.r)/d/2 return b.sx-dx*k,b.sy-dy*k,b.x+dx*h,b.y+dy*h end function bcollide(b,i) for ii=i+1,#bs,1 do local bb=bs[ii] local d=bdist(b,bb) if d < b.r+bb.r then local vx,vy,x,y=bbounce(b,bb,d) bb.sx,bb.sy,bb.x,bb.y=bbounce(bb,b,d) b.sx,b.sy,b.x,b.y=vx,vy,x,y end end end function car.update(dt) for i,b in ipairs(bs) do movep(b,dt,"x","sx",Safe_width) movep(b,dt,"y","sy",Safe_height) b.sy=b.sy+bs.gravity bcollide(b,i) end end function car.draw() for i,b in ipairs(bs) do g.setColor(b.col) g.circle("fill",b.x,b.y,b.r) end end
If you have built anything with Lua Carousel and would like to show it here, please do what Origedit did, and send me a message.
Files
carousel-bj.love 118 kB
47 days ago
carousel-bj-safe.love 118 kB
47 days ago
Get Lua Carousel
Lua Carousel
Write programs on desktop and mobile
Status | In development |
Category | Tool |
Author | Kartik Agaram |
Tags | LÖVE |
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