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Ports fix for #10660 from vg

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Courtesy of PJB3005
This commit is contained in:
mwerezak
2015-08-16 14:07:11 -04:00
parent a2ae87aaf9
commit b21bd0c42d
3 changed files with 44 additions and 1 deletions
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39
code/modules/lighting/light_source.dm
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@@ -246,6 +246,45 @@
effect_turf.Cut(idx, idx + 1)
effect_str.Cut(idx, idx + 1)
//Whoop yet not another copy pasta because speed ~~~~BYOND.
//Calculates and applies lighting for a single turf. This is intended for when a turf switches to
//using dynamic lighting when it was not doing so previously (when constructing a floor on space, for example).
//Assumes the turf is visible and such.
//For the love of god don't call this proc when it's not needed! Lighting artifacts WILL happen!
/datum/light_source/proc/calc_turf(var/turf/T)
var/idx = effect_turf.Find(T)
if(!idx)
return //WHY.
if(T.lighting_overlay)
#if LIGHTING_FALLOFF == 1 // circular
. = (T.lighting_overlay.x - source_turf.x)**2 + (T.lighting_overlay.y - source_turf.y)**2 + LIGHTING_HEIGHT
#if LIGHTING_LAMBERTIAN == 1
. = CLAMP01((1 - CLAMP01(sqrt(.) / light_range)) * (1 / (sqrt(. + 1))))
#else
. = 1 - CLAMP01(sqrt(.) / light_range)
#endif
#elif LIGHTING_FALLOFF == 2 // square
. = abs(T.lighting_overlay.x - source_turf.x) + abs(T.lighting_overlay.y - source_turf.y) + LIGHTING_HEIGHT
#if LIGHTING_LAMBERTIAN == 1
. = CLAMP01((1 - CLAMP01(. / light_range)) * (1 / (sqrt(.)**2 + )))
#else
. = 1 - CLAMP01(. / light_range)
#endif
#endif
. *= light_power
. = round(., LIGHTING_ROUND_VALUE)
effect_str[idx] = .
T.lighting_overlay.update_lumcount(
lum_r * .,
lum_g * .,
lum_b * .
)
#undef LUM_FALLOFF
#undef LUM_DISTANCE
#undef LUM_ATTENUATION