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https://github.com/Aurorastation/Aurora.3.git
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90b6691c8f
Implements a configurable sun for a sunlight effect using the lighting engine. Abuses Z-lights to illuminate Zs in a semi-realistic way. Kinda slow at setting state, but state changes shouldn't lag & are rare. Also adds the ability to create lights that ignore visibility when calculating range, causing them to shine through objects/walls.
40 lines
1.7 KiB
Plaintext
40 lines
1.7 KiB
Plaintext
// This is the define used to calculate falloff.
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#define LUM_FALLOFF(C, T) (1 - CLAMP01(sqrt((C.x - T.x) ** 2 + (C.y - T.y) ** 2 + LIGHTING_HEIGHT) / max(1, light_range)))
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#define LUM_FALLOFF_XY(Cx,Cy,Tx,Ty) (1 - CLAMP01(sqrt(((Cx) - (Tx)) ** 2 + ((Cy) - (Ty)) ** 2 + LIGHTING_HEIGHT) / max(1, light_range)))
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// Macro that applies light to a new corner.
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// It is a macro in the interest of speed, yet not having to copy paste it.
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// If you're wondering what's with the backslashes, the backslashes cause BYOND to not automatically end the line.
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// As such this all gets counted as a single line.
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// The braces and semicolons are there to be able to do this on a single line.
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#define APPLY_CORNER_XY(C,now,Tx,Ty) \
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. = LUM_FALLOFF_XY(C.x, C.y, Tx, Ty); \
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\
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. *= light_power; \
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var/OLD = effect_str[C]; \
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\
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effect_str[C] = .; \
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\
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C.update_lumcount \
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( \
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(. * lum_r) - (OLD * applied_lum_r), \
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(. * lum_g) - (OLD * applied_lum_g), \
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(. * lum_b) - (OLD * applied_lum_b), \
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(. * lum_u) - (OLD * applied_lum_u), \
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now \
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);
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#define APPLY_CORNER(C,now) APPLY_CORNER_XY(C,now,source_turf.x,source_turf.y)
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// I don't need to explain what this does, do I?
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#define REMOVE_CORNER(C,now) \
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. = -effect_str[C]; \
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C.update_lumcount \
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( \
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. * applied_lum_r, \
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. * applied_lum_g, \
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. * applied_lum_b, \
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. * applied_lum_u, \
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now \
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);
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