Chem gas tweaks, + toxins rebalance

code/__DEFINES/atmospherics.dm

@@ -128,6 +128,7 @@
 #define TANK_MAX_RELEASE_PRESSURE 			(ONE_ATMOSPHERE*3)
 #define TANK_MIN_RELEASE_PRESSURE 			0
 #define TANK_DEFAULT_RELEASE_PRESSURE 		17
+#define TANK_POST_FRAGMENT_REACTIONS		5
 
 //CANATMOSPASS
 #define ATMOS_PASS_YES 1
@@ -257,6 +258,7 @@
 #define GAS_HYPERNOB			"nob"
 #define GAS_NITROUS				"n2o"
 #define GAS_NITRYL				"no2"
+#define GAS_HYDROGEN			"hydrogen"
 #define GAS_TRITIUM				"tritium"
 #define GAS_BZ					"bz"
 #define GAS_STIMULUM			"stim"
@@ -267,6 +269,7 @@
 #define GAS_BROMINE				"bromine"
 #define GAS_AMMONIA				"ammonia"
 #define GAS_FLUORINE			"fluorine"
+#define GAS_ETHANOL				"ethanol"
 
 #define GAS_GROUP_CHEMICALS		"Chemicals"
 

code/__DEFINES/dcs/signals.dm

@@ -25,6 +25,9 @@
 	/// Do not allow this random event to continue.
 	#define CANCEL_PRE_RANDOM_EVENT (1<<0)
 
+/// called by auxgm add_gas: (gas_id)
+#define COMSIG_GLOB_NEW_GAS "!new_gas"
+
 // signals from globally accessible objects
 /// from SSsun when the sun changes position : (primary_sun, suns)
 #define COMSIG_SUN_MOVED "sun_moved"

code/__DEFINES/research.dm

@@ -74,3 +74,4 @@
 	)
 
 #define TECHWEB_BOMB_POINTCAP		50000 //Adjust as needed; Stops toxins from nullifying RND progression mechanics. Current Value Cap Radius: 100
+#define TECHWEB_BOMB_SIZE			160 // The shockwave radius required for a bomb to get TECHWEB_BOMB_POINTCAP points.