80 lines
No EOL
1.8 KiB
Lua
80 lines
No EOL
1.8 KiB
Lua
local gfx <const> = playdate.graphics
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math.randomseed(playdate.getSecondsSinceEpoch())
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local exps = {}
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local stars = {}
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function createStars()
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stars = {}
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for _i = 1, 30, 1 do
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stars[#stars+1] = {x=math.random(0,400),y=math.random(0,240),dx=math.random(-1.0,1.0)*0.5,dy=math.random(-1.0,1.0)*0.5,size=math.random(2,4)}
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end
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for star = 1, #stars do
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star = stars[star]
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if star.dx == 0 then star.dx = 0.2 end
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if star.dy == 0 then star.dy = 0.2 end
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end
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end
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createStars()
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function explode(_x,_y)
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for i = 1, 10, 1 do
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local part = {
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x = _x,
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y = _y,
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dir = math.random(0,359),
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size = math.random(10,15),
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speed = math.random(1,3)
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}
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exps[#exps+1] = part
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end
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end
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function processStars(_x,_y)
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gfx.setColor(gfx.kColorWhite)
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for star = 1, #stars do
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star = stars[star]
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star.x += star.dx
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star.y += star.dy
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gfx.fillRect(star.x,star.y,star.size,star.size)
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if star.x < _x then
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star.x += 420
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elseif star.x > _x + 420 then
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star.x = _x
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end
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if star.y < _y then
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star.y += 260
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elseif star.y > _y + 260 then
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star.y = _y
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end
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end
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end
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function processExplosions()
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gfx.setColor(gfx.kColorWhite)
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for part = 1, #exps do
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local particle = exps[part]
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particle.x += math.sin(particle.dir) * particle.speed
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particle.y -= math.cos(particle.dir) * particle.speed
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gfx.fillCircleAtPoint(particle.x,particle.y,particle.size)
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exps[part].size -= .3
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if exps[part].size < 0 then exps[part].size = 0 end
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end
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for part = 1, #exps do
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if exps[part].size <= 0.1 then
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table.remove(exps, part)
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break
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end
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end
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end |