Wild Pokemon functions and data

Replaced encounter rates with percent values
Added new constants denoting the number of wild Pokemon in the grass and water wild constructs
Annotated and relabeled the encounter generating functions
Renamed a WRAM address associaed with the temporary storage of the wild Pokemon's species
Moved spawn constants to constants/map_constants.asm for use anywhere in the disassembly

constants/map_constants.asm

@@ -753,3 +753,41 @@ OW_RIGHT EQU $c
 	const SIGNPOST_IFNOTSET
 	const SIGNPOST_ITEM
 	const SIGNPOST_COPY
+
+; I'm relocating spawn constants here, so that they can be used anywhere in the disassembly.
+
+
+const_value = -1
+	const SPAWN_N_A
+
+	const SPAWN_HOME
+	const SPAWN_DEBUG
+
+	const SPAWN_PALLET
+	const SPAWN_VIRIDIAN
+	const SPAWN_PEWTER
+	const SPAWN_CERULEAN
+	const SPAWN_ROCK_TUNNEL
+	const SPAWN_VERMILION
+	const SPAWN_LAVENDER
+	const SPAWN_SAFFRON
+	const SPAWN_CELADON
+	const SPAWN_FUCHSIA
+	const SPAWN_CINNABAR
+	const SPAWN_INDIGO
+
+	const SPAWN_NEW_BARK
+	const SPAWN_CHERRYGROVE
+	const SPAWN_VIOLET
+	const SPAWN_UNION_CAVE
+	const SPAWN_AZALEA
+	const SPAWN_CIANWOOD
+	const SPAWN_GOLDENROD
+	const SPAWN_OLIVINE
+	const SPAWN_ECRUTEAK
+	const SPAWN_MAHOGANY
+	const SPAWN_LAKE
+	const SPAWN_BLACKTHORN
+	const SPAWN_MT_SILVER
+	const SPAWN_FAST_SHIP
+NUM_SPAWNS EQU const_value