Refactor stat change functions.

Currently most of the battle engine still uses the old functions.
The new logic is shorter, less error-prone and works with Contrary.

constants/battle_constants.asm

@@ -23,6 +23,21 @@ NO_EFFECT          EQU $00
 	const MULTIPLE_STATS ; used by Curse
 NUM_LEVEL_STATS EQU const_value
 
+	const_def
+	const STAT_TARGET_F
+	const STAT_LOWER_F
+	const STAT_MISS_F
+	const STAT_SECONDARY_F
+	const STAT_SILENT_F
+	const STAT_SKIPTEXT_F
+
+STAT_TARGET    EQU 1 << STAT_TARGET_F
+STAT_LOWER     EQU 1 << STAT_LOWER_F
+STAT_MISS      EQU 1 << STAT_MISS_F
+STAT_SECONDARY EQU 1 << STAT_SECONDARY_F
+STAT_SILENT    EQU 1 << STAT_SILENT_F
+STAT_SKIPTEXT  EQU 1 << STAT_SKIPTEXT_F
+
 ; move struct
 	const_def
 	const MOVE_ANIM

contents/bank_ends.txt

@@ -5,24 +5,24 @@
 > -- Morimoto, Pokémon Ultra Sun/Ultra Moon
 > <https://www.serebii.net/ultrasunultramoon/virtualconsole.shtml>
 
-Free space: 191816/2097152 (9.15%)
+Free space: 191040/2097152 (9.11%)
 
 bank	end	free
 $00	$3f9b	$0065
-$01	$7fff	$0001
+$01	$8000	$0000
 $02	$8000	$0000
 $03	$7ff3	$000d
 $04	$7ffe	$0002
 $05	$7ffe	$0002
 $06	$7ff4	$000c
-$07	$7fd6	$002a
+$07	$7fd9	$0027
 $08	$7fe6	$001a
 $09	$7ff9	$0007
 $0a	$7fda	$0026
 $0b	$8000	$0000
 $0c	$7fdd	$0023
 $0d	$7f93	$006d
-$0e	$7ff0	$0010
+$0e	$7ff7	$0009
 $0f	$7ff5	$000b
 $10	$7ffe	$0002
 $11	$7fdc	$0024
@@ -48,7 +48,7 @@ $24	$7ffa	$0006
 $25	$7fe0	$0020
 $26	$7fad	$0053
 $27	$7fe9	$0017
-$28	$7fd0	$0030
+$28	$7fe9	$0017
 $29	$7fe4	$001c
 $2a	$7ffc	$0004
 $2b	$8000	$0000
@@ -85,7 +85,7 @@ $49	$7ffc	$0004
 $4a	$7ff0	$0010
 $4b	$7fe8	$0018
 $4c	$7fc8	$0038
-$4d	$7fa6	$005a
+$4d	$7fe2	$001e
 $4e	$7ffc	$0004
 $4f	$7f9a	$0066
 $50	$7ff7	$0009
@@ -115,13 +115,13 @@ $67	$7f30	$00d0
 $68	$7ffd	$0003
 $69	$7fa6	$005a
 $6a	$7fff	$0001
-$6b	$7dec	$0214
+$6b	$7fea	$0016
 $6c	$8000	$0000
 $6d	$7fea	$0016
-$6e	$7f5f	$00a1
+$6e	$7ff4	$000c
 $6f	$7fff	$0001
 $70	$7fd9	$0027
-$71	$7cd2	$032e
+$71	$7ce7	$0319
 $72	$8000	$0000
 $73	$7e04	$01fc
 $74	$71ba	$0e46