Revise some constant definitions

engine/gfx/cgb_layouts.asm

@@ -17,7 +17,7 @@ LoadSGBLayoutCGB:
 	ld l, a
 	ld h, 0
 	add hl, hl
-	ld de, .Jumptable
+	ld de, CGBLayoutJumptable
 	add hl, de
 	ld a, [hli]
 	ld h, [hl]
@@ -28,7 +28,8 @@ LoadSGBLayoutCGB:
 .done:
 	ret
 
-.Jumptable:
+CGBLayoutJumptable:
+	table_width 2, CGBLayoutJumptable
 	dw _CGB_BattleGrayscale
 	dw _CGB_BattleColors
 	dw _CGB_PokegearPals
@@ -60,6 +61,7 @@ LoadSGBLayoutCGB:
 	dw _CGB_TrainerOrMonFrontpicPals
 	dw _CGB_MysteryGift
 	dw _CGB_Unused1E
+	assert_table_length NUM_SCGB_LAYOUTS
 
 _CGB_BattleGrayscale:
 	ld hl, PalPacket_BattleGrayscale + 1

engine/gfx/load_font.asm

@@ -74,13 +74,13 @@ _LoadFontsBattleExtra::
 LoadFrame:
 	ld a, [wTextboxFrame]
 	maskbits NUM_FRAMES
-	ld bc, 6 * LEN_1BPP_TILE
+	ld bc, TEXTBOX_FRAME_TILES * LEN_1BPP_TILE
 	ld hl, Frames
 	call AddNTimes
 	ld d, h
 	ld e, l
 	ld hl, vTiles2 tile "┌" ; $79
-	lb bc, BANK(Frames), 6 ; "┌" to "┘"
+	lb bc, BANK(Frames), TEXTBOX_FRAME_TILES ; "┌" to "┘"
 	call Get1bppViaHDMA
 	ld hl, vTiles2 tile " " ; $7f
 	ld de, TextboxSpaceGFX

engine/gfx/sgb_layouts.asm

@@ -12,7 +12,7 @@ LoadSGBLayout:
 	ld l, a
 	ld h, 0
 	add hl, hl
-	ld de, .Jumptable
+	ld de, SGBLayoutJumptable
 	add hl, de
 	ld a, [hli]
 	ld h, [hl]
@@ -21,7 +21,8 @@ LoadSGBLayout:
 	push de
 	jp hl
 
-.Jumptable:
+SGBLayoutJumptable:
+	table_width 2, SGBLayoutJumptable
 	dw .SGB_BattleGrayscale
 	dw .SGB_BattleColors
 	dw .SGB_PokegearPals
@@ -53,6 +54,7 @@ LoadSGBLayout:
 	dw .SGB_TrainerOrMonFrontpicPals
 	dw .SGB_MysteryGift
 	dw .SGB_Unused1E
+	assert_table_length NUM_SCGB_LAYOUTS
 
 .SGB_BattleGrayscale:
 	ld hl, PalPacket_BattleGrayscale