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Iterative Explosions (#3838)

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This PR replaces recursive explosions with a new spreading engine: iterative explosions.
Should behave similarly, but also be more reliable, potentially faster.

Iterative explosions also support simple-explosion-esque directional explosion sounds/shake, and will now traverse Z-levels if the explosion is strong enough.

Also changes playsound() to transmit sounds across Z-levels. Uses BYOND's 3rd coordinate on /sound to make sound sound above/below the player if they're using headphones. Removed for now, can't get Z-falloff working right.

Fixes #2199.
This commit is contained in:
Lohikar
2017-12-30 04:38:12 +02:00
committed by Erki
parent ba57b5a5e5
commit 6debd29cb7
12 changed files with 269 additions and 93 deletions
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code/modules/multiz/basic.dm
+20 -4
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@@ -44,12 +44,28 @@ var/z_levels = 0 // Each bit represents a connection between adjacent levels. S
/proc/GetConnectedZlevels(z)
. = list(z)
for(var/level = z, HasBelow(level), level--)
. |= level-1
. += level-1
for(var/level = z, HasAbove(level), level++)
. |= level+1
. += level+1
proc/AreConnectedZLevels(var/zA, var/zB)
return zA == zB || (zB in GetConnectedZlevels(zA))
/proc/AreConnectedZLevels(var/zA, var/zB)
if (zA == zB)
return TRUE
if (SSatlas.connected_z_cache.len >= zA && SSatlas.connected_z_cache[zA])
return SSatlas.connected_z_cache[zA][zB]
var/list/levels = GetConnectedZlevels(zA)
var/list/new_entry = new(max(levels))
for (var/entry in levels)
new_entry[entry] = TRUE
if (SSatlas.connected_z_cache.len < zA)
SSatlas.connected_z_cache.len = zA
SSatlas.connected_z_cache[zA] = new_entry
return new_entry[zB]
/proc/get_zstep(ref, dir)
if(dir == UP)