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25 lines
564 B
Lua
25 lines
564 B
Lua
%import math
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%import textio
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%zeropage basicsafe
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; Note: this program can be compiled for multiple target systems.
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main {
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const uword screenwidth = txt.DEFAULT_WIDTH
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const uword screenheight = txt.DEFAULT_HEIGHT
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uword anglex
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uword angley
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ubyte color
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sub start() {
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repeat {
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ubyte x = msb(math.sin8u(msb(anglex)) * screenwidth)
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ubyte y = msb(math.cos8u(msb(angley)) * screenheight)
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txt.setcc(x, y, 81, color)
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anglex+=366
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angley+=291
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color++
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}
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}
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}
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