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Adds a somewhat hacky octagonal linear lighting algorithm

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deathride58
2019-03-27 00:39:52 -04:00
parent f11d634a36
commit 8ea35bf6d8
1 changed files with 7 additions and 2 deletions
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9
code/modules/lighting/lighting_source.dm
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@@ -117,8 +117,12 @@
//Cubic lighting falloff. This has the *exact* same range as the original lighting falloff calculation, down to the exact decimal, but it looks a little unnatural due to the harsher falloff and how it's generally brighter across the board.
//#define LUM_FALLOFF(C, T) (1 - CLAMP01((((C.x - T.x) * (C.x - T.x)) + ((C.y - T.y) * (C.y - T.y)) + LIGHTING_HEIGHT) / max(1, light_range*light_range)))
//Linear lighting falloff. This resembles the original lighting falloff calculation the best, but results in lights having a slightly larger range, which is most noticable with large light sources. This looks the darkest out of the three due to how lights are brighter closer to the source compared to the original falloff algorithm. This falloff method also does not at all take into account lighting height, as it acts as a flat reduction to light range with this method.
#define LUM_FALLOFF(C, T) (1 - CLAMP01(((abs(C.x - T.x) + abs(C.y - T.y))) / max(1, light_range)))
//Linear lighting falloff. This resembles the original lighting falloff calculation the best, but results in lights having a slightly larger range, which is most noticable with large light sources. This also results in lights being diamond-shaped, fuck. This looks the darkest out of the three due to how lights are brighter closer to the source compared to the original falloff algorithm. This falloff method also does not at all take into account lighting height, as it acts as a flat reduction to light range with this method.
//#define LUM_FALLOFF(C, T) (1 - CLAMP01(((abs(C.x - T.x) + abs(C.y - T.y))) / max(1, light_range+1)))
//Linear lighting falloff but with an octagonal shape in place of a diamond shape. Lummox JR please add pointer support.
#define GET_LUM_DIST(DISTX, DISTY) (DISTX + DISTY + abs(DISTX - DISTY)*0.4)
#define LUM_FALLOFF(C, T) (1 - CLAMP01(GET_LUM_DIST(abs(C.x - T.x), abs(C.y - T.y)) / max(1, light_range+1)))
#define APPLY_CORNER(C) \
. = LUM_FALLOFF(C, pixel_turf); \
@@ -302,5 +306,6 @@
#undef EFFECT_UPDATE
#undef LUM_FALLOFF
#undef GET_LUM_DIST
#undef REMOVE_CORNER
#undef APPLY_CORNER