Merge pull request #9316 from Thalpy/Reagents_bitflats

[READY] [FermiChem] Turns reaction vars into bitflags and adds a few new procs related to that.

code/__DEFINES/reagents.dm

@@ -34,3 +34,17 @@
 #define DEL_REAGENT		1	// reagent deleted (fully cleared)
 #define ADD_REAGENT		2	// reagent added
 #define REM_REAGENT		3	// reagent removed (may still exist)
+
+//reagent bitflags, used for altering how they works
+#define REAGENT_DEAD_PROCESS		(1<<0)	//calls on_mob_dead() if present in a dead body
+#define REAGENT_DONOTSPLIT			(1<<1)	//Do not split the chem at all during processing
+#define REAGENT_ONLYINVERSE			(1<<2)	//Only invert chem, no splitting
+#define REAGENT_ONMOBMERGE			(1<<3)	//Call on_mob_life proc when reagents are merging.
+#define REAGENT_INVISIBLE			(1<<4)	//Doesn't appear on handheld health analyzers.
+#define REAGENT_FORCEONNEW			(1<<5)  //Forces a on_new() call without a data overhead
+#define REAGENT_SNEAKYNAME          (1<<6)  //When inverted, the inverted chem uses the name of the original chem
+#define REAGENT_SPLITRETAINVOL      (1<<7)  //Retains initial volume of chem when splitting
+
+//Chemical reaction flags, for determining reaction specialties
+#define REACTION_CLEAR_IMPURE       (1<<0)  //Convert into impure/pure on reaction completion
+#define REACTION_CLEAR_INVERSE      (1<<1)  //Convert into inverse on reaction completion when purity is low enough