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https://github.com/irmen/prog8.git
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c38508c262
forever loop is gone (use repeat without iteration count). struct literal is now same as array literal [...] to avoid parsing ambiguity with scope blocks.
29 lines
511 B
Lua
29 lines
511 B
Lua
%import c64utils
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main {
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const uword width = 40
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const uword height = 25
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struct Ball {
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uword anglex
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uword angley
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ubyte color
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}
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sub start() {
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Ball ball
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repeat {
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ubyte x = msb(sin8u(msb(ball.anglex)) as uword * width)
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ubyte y = msb(cos8u(msb(ball.angley)) as uword * height)
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c64scr.setcc(x, y, 81, ball.color)
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ball.anglex+=800
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ball.angley+=947
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ball.color++
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}
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}
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}
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