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https://github.com/CHOMPStation2/CHOMPStation2.git
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new object-based lighting system
Signed-off-by: Mloc <colmohici@gmail.com>
This commit is contained in:
Mloc
169
code/modules/lighting/light_source.dm
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169
code/modules/lighting/light_source.dm
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@@ -0,0 +1,169 @@
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/datum/light_source
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var/atom/top_atom
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var/atom/source_atom
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var/turf/source_turf
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var/light_power
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var/light_range
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var/light_color // string, decomposed by parse_light_color()
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var/lum_r
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var/lum_g
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var/lum_b
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var/list/effect_r
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var/list/effect_g
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var/list/effect_b
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var/list/effect_turf
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var/applied
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var/needs_update
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var/destroyed
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var/force_update
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/datum/light_source/New(atom/owner, atom/top)
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source_atom = owner
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if(!source_atom.light_sources) source_atom.light_sources = list()
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source_atom.light_sources += src
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top_atom = top
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if(top_atom != source_atom)
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if(!top.light_sources) top.light_sources = list()
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top_atom.light_sources += src
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source_turf = top_atom
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light_power = source_atom.light_power
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light_range = source_atom.light_range
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light_color = source_atom.light_color
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parse_light_color()
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effect_r = list()
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effect_g = list()
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effect_b = list()
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effect_turf = list()
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update()
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return ..()
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/datum/light_source/proc/destroy()
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destroyed = 1
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force_update()
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if(source_atom) source_atom.light_sources -= src
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if(top_atom) top_atom.light_sources -= src
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/datum/light_source/proc/update(atom/new_top_atom)
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if(new_top_atom && new_top_atom != top_atom)
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if(top_atom != source_atom) top_atom.light_sources -= src
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top_atom = new_top_atom
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if(top_atom != source_atom)
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if(!top_atom.light_sources) top_atom.light_sources = list()
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top_atom.light_sources += src
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lighting_update_lights += src
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needs_update = 1
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/datum/light_source/proc/force_update()
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needs_update = 1
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force_update = 1
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lighting_update_lights += src
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/datum/light_source/proc/check()
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if(!source_atom)
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destroy()
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return 1
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if(!top_atom)
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top_atom = source_atom
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. = 1
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if(istype(top_atom, /turf))
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if(source_turf != top_atom)
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source_turf = top_atom
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. = 1
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else if(top_atom.loc != source_turf)
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source_turf = top_atom.loc
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. = 1
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if(source_atom.light_power != light_power)
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light_power = source_atom.light_power
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. = 1
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if(source_atom.light_range != light_range)
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light_range = source_atom.light_range
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. = 1
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if(source_atom.light_color != light_color)
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light_color = source_atom.light_color
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parse_light_color()
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. = 1
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if(light_range && light_power && !applied)
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. = 1
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/datum/light_source/proc/parse_light_color()
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if(light_color)
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lum_r = GetRedPart(light_color) / 255
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lum_g = GetGreenPart(light_color) / 255
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lum_b = GetBluePart(light_color) / 255
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else
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lum_r = 1
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lum_g = 1
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lum_b = 1
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/datum/light_source/proc/falloff(atom/movable/lighting_overlay/O)
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#if LIGHTING_FALLOFF == 1 // circular
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#if LIGHTING_RESOLUTION == 1
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. = (O.x - source_turf.x)**2 + (O.y - source_turf.y)**2 + LIGHTING_HEIGHT
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#else
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. = (O.x - source_turf.x + O.xoffset)**2 + (O.y - source_turf.y + O.yoffset)**2 + LIGHTING_HEIGHT
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#endif
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#if LIGHTING_LAMBERTIAN == 1
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. = CLAMP01((1 - CLAMP01(sqrt(.) / light_range)) * (1 / (sqrt(. + 1))))
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#else
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. = 1 - CLAMP01(sqrt(.) / light_range)
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#endif
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#elif LIGHTING_FALLOFF == 2 // square
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#if LIGHTING_RESOLUTION == 1
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. = abs(O.x - source_turf.x) + abs(O.y - source_turf.y) + LIGHTING_HEIGHT
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#else
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. = abs(O.x - source_turf.x + O.xoffset) + abs(O.y - source_turf.y + O.yoffset) + LIGHTING_HEIGHT
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#endif
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#if LIGHTING_LAMBERTIAN == 1
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. = CLAMP01((1 - CLAMP01(. / light_range)) * (1 / (sqrt(.)**2 + )))
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#else
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. = 1 - CLAMP01(. / light_range)
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#endif
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#endif
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/datum/light_source/proc/apply_lum()
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applied = 1
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if(istype(source_turf))
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for(var/atom/movable/lighting_overlay/O in view(light_range, source_turf))
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var/strength = light_power * falloff(O)
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effect_r[O] = lum_r * strength
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effect_g[O] = lum_g * strength
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effect_b[O] = lum_b * strength
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O.update_lumcount(lum_r * strength, lum_g * strength, lum_b * strength)
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for(var/turf/T in view(light_range, source_turf))
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if(!T.affecting_lights) T.affecting_lights = list()
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T.affecting_lights += src
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effect_turf += T
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/datum/light_source/proc/remove_lum()
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applied = 0
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for(var/atom/movable/lighting_overlay/O in effect_r)
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O.update_lumcount(-effect_r[O], -effect_g[O], -effect_b[O])
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for(var/turf/T in effect_turf)
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if(T.affecting_lights) T.affecting_lights -= src
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effect_r.Cut()
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effect_g.Cut()
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effect_b.Cut()
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effect_turf.Cut()
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