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106 lines
3.1 KiB
Plaintext
106 lines
3.1 KiB
Plaintext
#define MINIMUM_USEFUL_LIGHT_RANGE 1.4
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/atom
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var/light_power = 1 // Intensity of the light.
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var/light_range = 0 // Range in tiles of the light.
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var/light_color // Hexadecimal RGB string representing the colour of the light.
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var/tmp/datum/light_source/light // Our light source. Don't fuck with this directly unless you have a good reason!
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var/tmp/list/light_sources // Any light sources that are "inside" of us, for example, if src here was a mob that's carrying a flashlight, that flashlight's light source would be part of this list.
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// The proc you should always use to set the light of this atom.
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// Nonesensical value for l_color default, so we can detect if it gets set to null.
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#define NONSENSICAL_VALUE -99999
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/atom/proc/set_light(var/l_range, var/l_power, var/l_color = NONSENSICAL_VALUE)
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if(l_range > 0 && l_range < MINIMUM_USEFUL_LIGHT_RANGE)
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l_range = MINIMUM_USEFUL_LIGHT_RANGE //Brings the range up to 1.4, which is just barely brighter than the soft lighting that surrounds players.
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if (l_power != null)
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light_power = l_power
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if (l_range != null)
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light_range = l_range
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if (l_color != NONSENSICAL_VALUE)
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light_color = l_color
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SEND_SIGNAL(src, COMSIG_ATOM_SET_LIGHT, l_range, l_power, l_color)
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update_light()
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#undef NONSENSICAL_VALUE
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// Will update the light (duh).
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// Creates or destroys it if needed, makes it update values, makes sure it's got the correct source turf...
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/atom/proc/update_light()
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set waitfor = FALSE
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if (QDELETED(src))
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return
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if (!light_power || !light_range) // We won't emit light anyways, destroy the light source.
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QDEL_NULL(light)
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else
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if (!ismovableatom(loc)) // We choose what atom should be the top atom of the light here.
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. = src
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else
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. = loc
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if (light) // Update the light or create it if it does not exist.
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light.update(.)
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else
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light = new/datum/light_source(src, .)
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// If we have opacity, make sure to tell (potentially) affected light sources.
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/atom/movable/Destroy()
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var/turf/T = loc
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. = ..()
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if (opacity && istype(T))
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var/old_has_opaque_atom = T.has_opaque_atom
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T.recalc_atom_opacity()
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if (old_has_opaque_atom != T.has_opaque_atom)
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T.reconsider_lights()
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// Should always be used to change the opacity of an atom.
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// It notifies (potentially) affected light sources so they can update (if needed).
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/atom/proc/set_opacity(var/new_opacity)
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if (new_opacity == opacity)
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return
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opacity = new_opacity
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var/turf/T = loc
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if (!isturf(T))
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return
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if (new_opacity == TRUE)
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T.has_opaque_atom = TRUE
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T.reconsider_lights()
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else
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var/old_has_opaque_atom = T.has_opaque_atom
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T.recalc_atom_opacity()
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if (old_has_opaque_atom != T.has_opaque_atom)
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T.reconsider_lights()
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/atom/movable/Moved(atom/OldLoc, Dir)
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. = ..()
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var/datum/light_source/L
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var/thing
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for (thing in light_sources) // Cycle through the light sources on this atom and tell them to update.
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L = thing
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L.source_atom.update_light()
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/atom/vv_edit_var(var_name, var_value)
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switch (var_name)
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if ("light_range")
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set_light(l_range=var_value)
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return
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if ("light_power")
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set_light(l_power=var_value)
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return
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if ("light_color")
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set_light(l_color=var_value)
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return
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return ..()
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