36 lines
632 B
Lua
36 lines
632 B
Lua
function draw_animated_bg(startx)
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if amplitude <= 0 then return end
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startx = startx or 0
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fillp(0b0101101001011010)
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local color = 1
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-- vertical lines
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local t = t() + 10
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for i = startx - 1, 127, 9 do
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local a = sin(i * t / 512) * amplitude + 64
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local b = cos(i * t / 256) * amplitude + 64
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line(
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i,
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a,
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i,
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b,
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color
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)
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end
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-- horizontal lines
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for i = startx - 1, 127, 9 do
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local a = sin(i * t / 512) * amplitude + 64
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local b = cos(i * t / 256) * amplitude + 64
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line(
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a,
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i,
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b,
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i,
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color
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)
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end
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end
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function draw_bg_menu()
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end |