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gml_Script_scr_waver_height_bg

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1 
b = argument0;
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c = argument1;
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a += 1;
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for (i = background_height[0]; i > 0; i -= 1)
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{
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    a += 1;
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    if (c > 0)
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        c -= 0.1;
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    if (c < 0)
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        c -= 0.1;
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    draw_background_part_ext(background_index[0], 0, i, background_width[0], 1, x + (sin(a / b) * c), y + i, 1, 1, c_white, image_alpha);
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}