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32 lines
626 B
Lua
32 lines
626 B
Lua
%import c64utils
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%option enable_floats
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~ main {
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const uword width = 320
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const uword height = 200
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sub start() {
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;vm_gfx_clearscr(0)
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float t
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ubyte color
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while(1) {
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float x = sin(t*1.01) + cos(t*1.1234)
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float y = cos(t) + sin(t*0.03456)
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;vm_gfx_pixel(screenx(x), screeny(y), color//16)
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t += 0.01
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color++
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}
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}
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sub screenx(x: float) -> word {
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return floor(x * flt(width)/4.1) + width // 2
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}
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sub screeny(y: float) -> word {
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return floor(y * flt(height)/4.1) + height // 2
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}
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}
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