deterministic explosion system (#13392)

* wae explosions

* okay

* changes

* fixes

* fix

* ok

* ok

* kills more dead code

* okay

* fix

* ok

* tiles

* ok

* okay

* woops

* ok

* fix

* okay

* mob damage

* fixes

* insanity

* more

* more

* fixes

* more

* woot

* don't commit that

* YES

* fix

code/__DEFINES/dcs/signals.dm

@@ -83,6 +83,8 @@
 #define COMSIG_ATOM_EXIT "atom_exit"							//from base of atom/Exit(): (/atom/movable/exiting, /atom/newloc)
 	#define COMPONENT_ATOM_BLOCK_EXIT 1
 #define COMSIG_ATOM_EXITED "atom_exited"						//from base of atom/Exited(): (atom/movable/exiting, atom/newloc)
+/// From base of atom/wave_ex_act(): (datum/wave_explosion/explosion, args)
+#define COMSIG_ATOM_WAVE_EX_ACT "atom_wave_ex_act"
 ///from base of atom/ex_act(): (severity, target)
 #define COMSIG_ATOM_EX_ACT "atom_ex_act"
 ///from base of atom/emp_act(): (severity)

code/__DEFINES/explosion.dm

@@ -0,0 +1,86 @@
+// THIS IS INSANITY
+// These are how wave explosions track when there's not only one direction to keep track of (diagonals, etc)
+#define WEX_DIR_NORTH	NORTH
+#define WEX_DIR_SOUTH	SOUTH
+#define WEX_DIR_EAST	EAST
+#define WEX_DIR_WEST	WEST
+#define WEX_ALLDIRS		(WEX_DIR_NORTH | WEX_DIR_SOUTH | WEX_DIR_EAST | WEX_DIR_WEST)
+
+/// Default explosion power to consider an explosion over
+#define EXPLOSION_POWER_DEAD			2.5
+/// Default explosion falloff
+#define EXPLOSION_DEFAULT_FALLOFF_MULTIPLY		0.98
+/// Default explosion constant falloff
+#define EXPLOSION_DEFAULT_FALLOFF_SUBTRACT		5
+/// Block amount at which point having 0 block resistance will result in a full block
+#define EXPLOSION_POWER_NO_RESIST_THRESHOLD		5
+
+/// Explosion power quantization
+#define EXPLOSION_POWER_QUANTIZATION_ACCURACY	0.1
+
+// [explosion_flags] variable on /atom
+/// No blocking if we're not dense
+#define EXPLOSION_FLAG_DENSITY_DEPENDENT			(1<<0)
+/// If we survive the explosion, we block ALL the power and ignore the results of wave_ex_act().
+#define EXPLOSION_FLAG_HARD_OBSTACLE				(1<<1)
+
+// Standardized explosion powers
+/// Maxcap
+#define EXPLOSION_POWER_MAXCAP					500
+/// erases shreds from explosions/item damage
+#define EXPLOSION_POWER_ERASE_SHREDS			400
+/// Gibs most mobs
+#define EXPLOSION_POWER_NORMAL_MOB_GIB			400
+
+// Walls
+#define EXPLOSION_POWER_WALL_SCRAPE				400
+#define EXPLOSION_POWER_WALL_DISMANTLE			300
+#define EXPLOSION_POWER_WALL_MINIMUM_DISMANTLE	200
+
+#define EXPLOSION_POWER_RWALL_SCRAPE				450
+#define EXPLOSION_POWER_RWALL_DISMANTLE				400
+#define EXPLOSION_POWER_RWALL_MINIMUM_DISMANTLE		300
+
+// Floors
+#define EXPLOSION_POWER_FLOOR_TILE_BREAK			50
+#define EXPLOSION_POWER_FLOOR_MINIMUM_TURF_BREAK	125
+#define EXPLOSION_POWER_FLOOR_TURF_BREAK_BONUS		225
+#define EXPLOSION_POWER_FLOOR_TURF_BREAK			350
+#define EXPLOSION_POWER_FLOOR_TURF_SCRAPE			425
+#define EXPLOSION_POWER_FLOOR_SHIELDED_IMMUNITY		250
+
+// Helpers
+/// Explosion power to object damage (without taking into consideration armor)
+#define EXPLOSION_POWER_STANDARD_SCALE_OBJECT_DAMAGE(power, multiplier)			(power>500)?(10*(power**0.6)*multiplier):(0.1*(power**1.3)*multiplier)
+/// Explosion power to object damage for hard obstacles
+#define EXPLOSION_POWER_STANDARD_SCALE_HARD_OBSTACLE_DAMAGE(power, multiplier)	(power>500)?(10*(power**0.6)*multiplier):(0.15*(power**1.3)*multiplier)
+/// Explosion power to object damage for windows
+#define EXPLOSION_POWER_STANDARD_SCALE_WINDOW_DAMAGE(power, multiplier)			(power>500)?(10*(power**0.6)*multiplier):(0.2*(power**1.3)*multiplier)
+/// Default brute damage to do to living things
+#define EXPLOSION_POWER_STANDARD_SCALE_MOB_DAMAGE(power, multiplier)			((power / 2) * multiplier)
+
+// Damage factors
+/// Factor to multiply damage to a door by if it's open (and therefore not blocking the explosion)
+#define EXPLOSION_DAMAGE_OPEN_DOOR_FACTOR			0.25
+
+// Standardized explosion constant blocks
+#define EXPLOSION_BLOCK_WINDOW							10
+#define EXPLOSION_BLOCK_MACHINE							20
+#define EXPLOSION_BLOCK_SPACE							20
+#define EXPLOSION_BLOCK_REINFORCED_WINDOW				50
+#define EXPLOSION_BLOCK_DENSE_FILLER					50
+#define EXPLOSION_BLOCK_WALL							75
+#define EXPLOSION_BLOCK_BLAST_PROOF						250
+#define EXPLOSION_BLOCK_BOROSILICATE_WINDOW				250
+#define EXPLOSION_BLOCK_EXTREME							250
+
+// Standardized explosion factor blocks
+#define EXPLOSION_DAMPEN_MACHINE					0.95
+#define EXPLOSION_DAMPEN_SPACE						0.95
+#define EXPLOSION_DAMPEN_WINDOW						0.95
+#define EXPLOSION_DAMPEN_REINFORCED_WINDOW			0.9
+#define EXPLOSION_DAMPEN_DENSE_FILLER				0.85
+#define EXPLOSION_DAMPEN_WALL						0.8
+#define EXPLOSION_DAMPEN_BOROSILICATE_WINDOW		0.65
+#define EXPLOSION_DAMPEN_BLAST_PROOF				0.65
+#define EXPLOSION_DAMPEN_EXTREME					0.5

code/__DEFINES/subsystems.dm

@@ -180,6 +180,7 @@
 #define FIRE_PRIORITY_PROJECTILES	200
 #define FIRE_PRIORITY_TICKER		200
 #define FIRE_PRIORITY_ATMOS_ADJACENCY	300
+#define FIRE_PRIORITY_EXPLOSIONS	350
 #define FIRE_PRIORITY_STATPANEL		390
 #define FIRE_PRIORITY_CHAT			400
 #define FIRE_PRIORITY_RUNECHAT		410
@@ -219,7 +220,6 @@
 		A.flags_1 &= ~OVERLAY_QUEUED_1;\
 	} while(FALSE)
 
-
 /**
 	Create a new timer and add it to the queue.
 	* Arguments: