Merge pull request #7696 from ursamedium/manualmirror

Mirror of tg's new gas sprites

code/__DEFINES/atmospherics.dm

@@ -62,7 +62,9 @@
 //GASES
 #define MIN_TOXIC_GAS_DAMAGE				1
 #define MAX_TOXIC_GAS_DAMAGE				10
-#define MOLES_GAS_VISIBLE					0.5		//Moles in a standard cell after which gases are visible
+#define MOLES_GAS_VISIBLE					0.25	//Moles in a standard cell after which gases are visible
+#define FACTOR_GAS_VISIBLE_MAX				20 //moles_visible * FACTOR_GAS_VISIBLE_MAX = Moles after which gas is at maximum visibility
+#define MOLES_GAS_VISIBLE_STEP				0.25 //Mole step for alpha updates. This means alpha can update at 0.25, 0.5, 0.75 and so on
 
 //REACTIONS
 //return values for reactions (bitflags)
@@ -246,6 +248,15 @@
 
 #define ASSERT_GAS(gas_id, gas_mixture) if (!gas_mixture.gases[gas_id]) { ADD_GAS(gas_id, gas_mixture.gases) };
 
+
+//prefer this to gas_mixture/total_moles in performance critical areas
+#define TOTAL_MOLES(cached_gases, out_var)\
+	out_var = 0;\
+	for(var/total_moles_id in cached_gases){\
+		out_var += cached_gases[total_moles_id][MOLES];\
+	}
+
+
 GLOBAL_LIST_INIT(pipe_paint_colors, list(
 		"amethyst" = rgb(130,43,255), //supplymain
 		"blue" = rgb(0,0,255),