shithub: pokecrystal

Download patch

ref: af4001132e3ead7da12faaf6e2a09b548fb98490
parent: 2085ebcc617fdd78cc8194dc4a9a34e9fb8e8b51
author: Remy Oukaour <remy.oukaour@gmail.com>
date: Thu Jan 11 18:50:44 EST 2018

Break up engine/events_3.asm

--- a/constants/hardware_constants.asm
+++ b/constants/hardware_constants.asm
@@ -56,7 +56,7 @@
 OBP_NUM      EQU 1 << OAM_OBP_NUM   ; $10
 X_FLIP       EQU 1 << OAM_X_FLIP    ; $20
 Y_FLIP       EQU 1 << OAM_Y_FLIP    ; $40
-BEHIND_BG    EQU 1 << OAM_PRIORITY  ; $80
+PRIORITY     EQU 1 << OAM_PRIORITY  ; $80
 
 ; Other useful constants
 LCDC_DEFAULT EQU %11100011
--- a/data/battle_anims/objects.asm
+++ b/data/battle_anims/objects.asm
@@ -143,7 +143,7 @@
 	battleanimobj RELATIVE_X, $90, BATTLEANIMFRAMESET_87, BATTLEANIMFUNC_39, PAL_BATTLE_OB_GRAY, $1f ; ANIM_OBJ_7A
 	battleanimobj RELATIVE_X, $80, BATTLEANIMFRAMESET_30, BATTLEANIMFUNC_3A, PAL_BATTLE_OB_YELLOW, $11 ; ANIM_OBJ_7B
 	battleanimobj RELATIVE_X | X_FLIP, $90, BATTLEANIMFRAMESET_34, BATTLEANIMFUNC_00, PAL_BATTLE_OB_YELLOW, $05 ; ANIM_OBJ_7C
-	battleanimobj RELATIVE_X | X_FLIP | BEHIND_BG, $88, BATTLEANIMFRAMESET_88, BATTLEANIMFUNC_3B, PAL_BATTLE_OB_BLUE, $13 ; ANIM_OBJ_7D
+	battleanimobj RELATIVE_X | X_FLIP | PRIORITY, $88, BATTLEANIMFRAMESET_88, BATTLEANIMFUNC_3B, PAL_BATTLE_OB_BLUE, $13 ; ANIM_OBJ_7D
 	battleanimobj RELATIVE_X, $80, BATTLEANIMFRAMESET_76, BATTLEANIMFUNC_25, PAL_BATTLE_OB_RED, $23 ; ANIM_OBJ_HEART
 	battleanimobj RELATIVE_X, $98, BATTLEANIMFRAMESET_10, BATTLEANIMFUNC_34, PAL_BATTLE_OB_RED, $03 ; ANIM_OBJ_7F
 	battleanimobj RELATIVE_X, $a8, BATTLEANIMFRAMESET_0F, BATTLEANIMFUNC_3C, PAL_BATTLE_OB_RED, $03 ; ANIM_OBJ_80
--- a/data/sprite_anims/oam.asm
+++ b/data/sprite_anims/oam.asm
@@ -162,10 +162,10 @@
 
 .OAMData_TradePokeBall1:
 	db 4
-	dsprite -1,  0, -1,  0, $00, 0 | BEHIND_BG
-	dsprite -1,  0,  0,  0, $00, 0 | X_FLIP | BEHIND_BG
-	dsprite  0,  0, -1,  0, $01, 0 | BEHIND_BG
-	dsprite  0,  0,  0,  0, $01, 0 | X_FLIP | BEHIND_BG
+	dsprite -1,  0, -1,  0, $00, 0 | PRIORITY
+	dsprite -1,  0,  0,  0, $00, 0 | X_FLIP | PRIORITY
+	dsprite  0,  0, -1,  0, $01, 0 | PRIORITY
+	dsprite  0,  0,  0,  0, $01, 0 | X_FLIP | PRIORITY
 
 .OAMData_IntroUnownF2_1:
 	db 4
@@ -183,10 +183,10 @@
 
 ; unused
 	db 4
-	dsprite -1,  0, -1,  0, $00, 0 | BEHIND_BG
-	dsprite -1,  0,  0,  0, $00, 0 | X_FLIP | BEHIND_BG
-	dsprite  0,  0, -1,  0, $00, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0,  0,  0,  0, $00, 0 | X_FLIP | Y_FLIP | BEHIND_BG
+	dsprite -1,  0, -1,  0, $00, 0 | PRIORITY
+	dsprite -1,  0,  0,  0, $00, 0 | X_FLIP | PRIORITY
+	dsprite  0,  0, -1,  0, $00, 0 | Y_FLIP | PRIORITY
+	dsprite  0,  0,  0,  0, $00, 0 | X_FLIP | Y_FLIP | PRIORITY
 
 .OAMData_TradePoofBubble:
 	db 16
@@ -353,10 +353,10 @@
 
 .OAMData_MagnetTrainRed:
 	db 4
-	dsprite -1,  0, -1,  0, $00, PAL_OW_RED | BEHIND_BG
-	dsprite -1,  0,  0,  0, $01, PAL_OW_RED | BEHIND_BG
-	dsprite  0,  0, -1,  0, $02, PAL_OW_RED | BEHIND_BG
-	dsprite  0,  0,  0,  0, $03, PAL_OW_RED | BEHIND_BG
+	dsprite -1,  0, -1,  0, $00, PAL_OW_RED | PRIORITY
+	dsprite -1,  0,  0,  0, $01, PAL_OW_RED | PRIORITY
+	dsprite  0,  0, -1,  0, $02, PAL_OW_RED | PRIORITY
+	dsprite  0,  0,  0,  0, $03, PAL_OW_RED | PRIORITY
 
 .OAMData_PartyMonWithMail1:
 	db 4
@@ -410,22 +410,22 @@
 	dsprite -1,  0, -1,  0, $22, 0
 	dsprite -1,  0,  0,  0, $23, 0
 	dsprite -1,  0,  1,  0, $24, 0
-	dsprite  0,  0, -3,  0, $30, 0 | BEHIND_BG
-	dsprite  0,  0, -2,  0, $31, 0 | BEHIND_BG
-	dsprite  0,  0, -1,  0, $32, 0 | BEHIND_BG
-	dsprite  0,  0,  0,  0, $33, 0 | BEHIND_BG
-	dsprite  0,  0,  1,  0, $34, 0 | BEHIND_BG
-	dsprite  1,  0, -3,  0, $40, 0 | BEHIND_BG
-	dsprite  1,  0, -2,  0, $41, 0 | BEHIND_BG
-	dsprite  1,  0, -1,  0, $42, 0 | BEHIND_BG
-	dsprite  1,  0,  0,  0, $43, 0 | BEHIND_BG
-	dsprite  1,  0,  1,  0, $44, 0 | BEHIND_BG
-	dsprite  1,  0,  2,  0, $45, 0 | BEHIND_BG
-	dsprite  2,  0, -2,  0, $51, 0 | BEHIND_BG
-	dsprite  2,  0, -1,  0, $52, 0 | BEHIND_BG
-	dsprite  2,  0,  0,  0, $53, 0 | BEHIND_BG
-	dsprite  2,  0,  1,  0, $54, 0 | BEHIND_BG
-	dsprite  2,  0,  2,  0, $55, 0 | BEHIND_BG
+	dsprite  0,  0, -3,  0, $30, 0 | PRIORITY
+	dsprite  0,  0, -2,  0, $31, 0 | PRIORITY
+	dsprite  0,  0, -1,  0, $32, 0 | PRIORITY
+	dsprite  0,  0,  0,  0, $33, 0 | PRIORITY
+	dsprite  0,  0,  1,  0, $34, 0 | PRIORITY
+	dsprite  1,  0, -3,  0, $40, 0 | PRIORITY
+	dsprite  1,  0, -2,  0, $41, 0 | PRIORITY
+	dsprite  1,  0, -1,  0, $42, 0 | PRIORITY
+	dsprite  1,  0,  0,  0, $43, 0 | PRIORITY
+	dsprite  1,  0,  1,  0, $44, 0 | PRIORITY
+	dsprite  1,  0,  2,  0, $45, 0 | PRIORITY
+	dsprite  2,  0, -2,  0, $51, 0 | PRIORITY
+	dsprite  2,  0, -1,  0, $52, 0 | PRIORITY
+	dsprite  2,  0,  0,  0, $53, 0 | PRIORITY
+	dsprite  2,  0,  1,  0, $54, 0 | PRIORITY
+	dsprite  2,  0,  2,  0, $55, 0 | PRIORITY
 
 .OAMData_GSIntroNote:
 	db 2
@@ -749,10 +749,10 @@
 
 .OAMData_MagnetTrainBlue:
 	db 4
-	dsprite -1,  0, -1,  0, $00, PAL_OW_BLUE | BEHIND_BG
-	dsprite -1,  0,  0,  0, $01, PAL_OW_BLUE | BEHIND_BG
-	dsprite  0,  0, -1,  0, $02, PAL_OW_BLUE | BEHIND_BG
-	dsprite  0,  0,  0,  0, $03, PAL_OW_BLUE | BEHIND_BG
+	dsprite -1,  0, -1,  0, $00, PAL_OW_BLUE | PRIORITY
+	dsprite -1,  0,  0,  0, $01, PAL_OW_BLUE | PRIORITY
+	dsprite  0,  0, -1,  0, $02, PAL_OW_BLUE | PRIORITY
+	dsprite  0,  0,  0,  0, $03, PAL_OW_BLUE | PRIORITY
 
 .OAMData_MobileTradeCableBulge:
 	db 1
@@ -1060,26 +1060,26 @@
 
 .OAMData_IntroSuicuneAway:
 	db 20
-	dsprite  0,  0,   1,  0, $00, 1 | BEHIND_BG
-	dsprite  1,  0,   2,  0, $00, 1 | BEHIND_BG
-	dsprite  2,  0,   3,  0, $00, 1 | BEHIND_BG
-	dsprite  3,  0,   4,  0, $00, 1 | BEHIND_BG
-	dsprite  4,  0,   5,  0, $00, 1 | BEHIND_BG
-	dsprite  3,  0,   6,  0, $00, 1 | BEHIND_BG
-	dsprite  2,  0,   7,  0, $00, 1 | BEHIND_BG
-	dsprite  1,  0,   8,  0, $00, 1 | BEHIND_BG
-	dsprite  0,  0,   9,  0, $00, 1 | BEHIND_BG
-	dsprite  1,  0,  10,  0, $00, 1 | BEHIND_BG
-	dsprite  2,  0,  11,  0, $00, 1 | BEHIND_BG
-	dsprite  3,  0,  12,  0, $00, 1 | BEHIND_BG
-	dsprite  4,  0,  13,  0, $00, 1 | BEHIND_BG
-	dsprite  3,  0,  14,  0, $00, 1 | BEHIND_BG
-	dsprite  2,  0,  15,  0, $00, 1 | BEHIND_BG
-	dsprite  1,  0,  16,  0, $00, 1 | BEHIND_BG
-	dsprite  0,  0, -15,  0, $00, 1 | BEHIND_BG
-	dsprite  1,  0, -14,  0, $00, 1 | BEHIND_BG
-	dsprite  2,  0, -13,  0, $00, 1 | BEHIND_BG
-	dsprite  3,  0, -12,  0, $00, 1 | BEHIND_BG
+	dsprite  0,  0,   1,  0, $00, 1 | PRIORITY
+	dsprite  1,  0,   2,  0, $00, 1 | PRIORITY
+	dsprite  2,  0,   3,  0, $00, 1 | PRIORITY
+	dsprite  3,  0,   4,  0, $00, 1 | PRIORITY
+	dsprite  4,  0,   5,  0, $00, 1 | PRIORITY
+	dsprite  3,  0,   6,  0, $00, 1 | PRIORITY
+	dsprite  2,  0,   7,  0, $00, 1 | PRIORITY
+	dsprite  1,  0,   8,  0, $00, 1 | PRIORITY
+	dsprite  0,  0,   9,  0, $00, 1 | PRIORITY
+	dsprite  1,  0,  10,  0, $00, 1 | PRIORITY
+	dsprite  2,  0,  11,  0, $00, 1 | PRIORITY
+	dsprite  3,  0,  12,  0, $00, 1 | PRIORITY
+	dsprite  4,  0,  13,  0, $00, 1 | PRIORITY
+	dsprite  3,  0,  14,  0, $00, 1 | PRIORITY
+	dsprite  2,  0,  15,  0, $00, 1 | PRIORITY
+	dsprite  1,  0,  16,  0, $00, 1 | PRIORITY
+	dsprite  0,  0, -15,  0, $00, 1 | PRIORITY
+	dsprite  1,  0, -14,  0, $00, 1 | PRIORITY
+	dsprite  2,  0, -13,  0, $00, 1 | PRIORITY
+	dsprite  3,  0, -12,  0, $00, 1 | PRIORITY
 
 .OAMData_Celebi:
 	db 4
--- a/engine/card_flip.asm
+++ b/engine/card_flip.asm
@@ -1472,145 +1472,145 @@
 
 .SingleTile: ; e0a41
 	db 6
-	dsprite  0, 0,  -1, 7, $00, 0 | BEHIND_BG
-	dsprite  0, 0,   0, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 5,  -1, 7, $00, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   0, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   1, 0, $03, 0 | BEHIND_BG
+	dsprite  0, 0,  -1, 7, $00, 0 | PRIORITY
+	dsprite  0, 0,   0, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  0, 5,  -1, 7, $00, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   0, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   1, 0, $03, 0 | PRIORITY
 
 .PokeGroup: ; e0a5a
 	db 26
-	dsprite  0, 0,  -1, 7, $00, 0 | BEHIND_BG
-	dsprite  0, 0,   0, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   1, 0, $00, 0 | X_FLIP | BEHIND_BG
-	dsprite  1, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  1, 0,   1, 0, $01, 0 | X_FLIP | BEHIND_BG
-	dsprite  2, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  2, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  3, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  3, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  4, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  4, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  5, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  5, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  6, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  6, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  7, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  7, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  8, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  8, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  9, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  9, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite 10, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite 10, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite 10, 1,  -1, 7, $00, 0 | Y_FLIP | BEHIND_BG
-	dsprite 10, 1,   0, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite 10, 1,   1, 0, $03, 0 | BEHIND_BG
+	dsprite  0, 0,  -1, 7, $00, 0 | PRIORITY
+	dsprite  0, 0,   0, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   1, 0, $00, 0 | X_FLIP | PRIORITY
+	dsprite  1, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  1, 0,   1, 0, $01, 0 | X_FLIP | PRIORITY
+	dsprite  2, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  2, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  3, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  3, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  4, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  4, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  5, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  5, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  6, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  6, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  7, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  7, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  8, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  8, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  9, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  9, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite 10, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite 10, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite 10, 1,  -1, 7, $00, 0 | Y_FLIP | PRIORITY
+	dsprite 10, 1,   0, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite 10, 1,   1, 0, $03, 0 | PRIORITY
 
 .NumGroup: ; e0ac3
 	db 20
-	dsprite  0, 0,  -1, 7, $00, 0 | BEHIND_BG
-	dsprite  0, 0,   0, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   1, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   2, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 0,   3, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   4, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 0,   5, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   6, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 0,   7, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   8, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 5,  -1, 7, $00, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   0, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   1, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   2, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 5,   3, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   4, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 5,   5, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   6, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 5,   7, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  0, 5,   8, 0, $03, 0 | BEHIND_BG
+	dsprite  0, 0,  -1, 7, $00, 0 | PRIORITY
+	dsprite  0, 0,   0, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   1, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   2, 0, $03, 0 | PRIORITY
+	dsprite  0, 0,   3, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   4, 0, $03, 0 | PRIORITY
+	dsprite  0, 0,   5, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   6, 0, $03, 0 | PRIORITY
+	dsprite  0, 0,   7, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   8, 0, $03, 0 | PRIORITY
+	dsprite  0, 5,  -1, 7, $00, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   0, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   1, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   2, 0, $03, 0 | PRIORITY
+	dsprite  0, 5,   3, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   4, 0, $03, 0 | PRIORITY
+	dsprite  0, 5,   5, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   6, 0, $03, 0 | PRIORITY
+	dsprite  0, 5,   7, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  0, 5,   8, 0, $03, 0 | PRIORITY
 
 .NumGroupPair: ; e0b14
 	db 30
-	dsprite  0, 0,   0, 0, $00, 0 | BEHIND_BG
-	dsprite  0, 0,   1, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   2, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 0,   4, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   5, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 0,   6, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   7, 0, $03, 0 | BEHIND_BG
-	dsprite  0, 0,   8, 0, $02, 0 | BEHIND_BG
-	dsprite  0, 0,   9, 0, $03, 0 | BEHIND_BG
-	dsprite  1, 0,   0, 0, $01, 0 | BEHIND_BG
-	dsprite  1, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  1, 0,   5, 0, $03, 0 | BEHIND_BG
-	dsprite  1, 0,   7, 0, $03, 0 | BEHIND_BG
-	dsprite  1, 0,   9, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 0,   0, 0, $01, 0 | BEHIND_BG
-	dsprite  2, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 0,   5, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 0,   7, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 0,   9, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 1,   0, 0, $00, 0 | Y_FLIP | BEHIND_BG
-	dsprite  2, 1,   1, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  2, 1,   2, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite  2, 1,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 1,   4, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 1,   5, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 1,   6, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 1,   7, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 1,   8, 0, $03, 0 | BEHIND_BG
-	dsprite  2, 1,   9, 0, $03, 0 | BEHIND_BG
+	dsprite  0, 0,   0, 0, $00, 0 | PRIORITY
+	dsprite  0, 0,   1, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   2, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  0, 0,   4, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   5, 0, $03, 0 | PRIORITY
+	dsprite  0, 0,   6, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   7, 0, $03, 0 | PRIORITY
+	dsprite  0, 0,   8, 0, $02, 0 | PRIORITY
+	dsprite  0, 0,   9, 0, $03, 0 | PRIORITY
+	dsprite  1, 0,   0, 0, $01, 0 | PRIORITY
+	dsprite  1, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  1, 0,   5, 0, $03, 0 | PRIORITY
+	dsprite  1, 0,   7, 0, $03, 0 | PRIORITY
+	dsprite  1, 0,   9, 0, $03, 0 | PRIORITY
+	dsprite  2, 0,   0, 0, $01, 0 | PRIORITY
+	dsprite  2, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  2, 0,   5, 0, $03, 0 | PRIORITY
+	dsprite  2, 0,   7, 0, $03, 0 | PRIORITY
+	dsprite  2, 0,   9, 0, $03, 0 | PRIORITY
+	dsprite  2, 1,   0, 0, $00, 0 | Y_FLIP | PRIORITY
+	dsprite  2, 1,   1, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  2, 1,   2, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite  2, 1,   3, 0, $03, 0 | PRIORITY
+	dsprite  2, 1,   4, 0, $03, 0 | PRIORITY
+	dsprite  2, 1,   5, 0, $03, 0 | PRIORITY
+	dsprite  2, 1,   6, 0, $03, 0 | PRIORITY
+	dsprite  2, 1,   7, 0, $03, 0 | PRIORITY
+	dsprite  2, 1,   8, 0, $03, 0 | PRIORITY
+	dsprite  2, 1,   9, 0, $03, 0 | PRIORITY
 
 .PokeGroupPair: ; e0b8d
 	db 38
-	dsprite  0, 0,  -1, 7, $00, 0 | BEHIND_BG
-	dsprite  0, 0,   3, 0, $00, 0 | X_FLIP | BEHIND_BG
-	dsprite  1, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  1, 0,   3, 0, $01, 0 | X_FLIP | BEHIND_BG
-	dsprite  2, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  2, 0,   3, 0, $01, 0 | X_FLIP | BEHIND_BG
-	dsprite  3, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  3, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  3, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  4, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  4, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  4, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  5, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  5, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  5, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  6, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  6, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  6, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  7, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  7, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  7, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  8, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  8, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  8, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite  9, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite  9, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite  9, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite 10, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite 10, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite 10, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite 11, 0,  -1, 7, $01, 0 | BEHIND_BG
-	dsprite 11, 0,   1, 0, $03, 0 | BEHIND_BG
-	dsprite 11, 0,   3, 0, $03, 0 | BEHIND_BG
-	dsprite 11, 1,  -1, 7, $00, 0 | Y_FLIP | BEHIND_BG
-	dsprite 11, 1,   0, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite 11, 1,   1, 0, $03, 0 | Y_FLIP | BEHIND_BG
-	dsprite 11, 1,   2, 0, $02, 0 | Y_FLIP | BEHIND_BG
-	dsprite 11, 1,   3, 0, $03, 0 | X_FLIP | Y_FLIP | BEHIND_BG
+	dsprite  0, 0,  -1, 7, $00, 0 | PRIORITY
+	dsprite  0, 0,   3, 0, $00, 0 | X_FLIP | PRIORITY
+	dsprite  1, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  1, 0,   3, 0, $01, 0 | X_FLIP | PRIORITY
+	dsprite  2, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  2, 0,   3, 0, $01, 0 | X_FLIP | PRIORITY
+	dsprite  3, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  3, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  3, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  4, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  4, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  4, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  5, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  5, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  5, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  6, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  6, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  6, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  7, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  7, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  7, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  8, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  8, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  8, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite  9, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite  9, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite  9, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite 10, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite 10, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite 10, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite 11, 0,  -1, 7, $01, 0 | PRIORITY
+	dsprite 11, 0,   1, 0, $03, 0 | PRIORITY
+	dsprite 11, 0,   3, 0, $03, 0 | PRIORITY
+	dsprite 11, 1,  -1, 7, $00, 0 | Y_FLIP | PRIORITY
+	dsprite 11, 1,   0, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite 11, 1,   1, 0, $03, 0 | Y_FLIP | PRIORITY
+	dsprite 11, 1,   2, 0, $02, 0 | Y_FLIP | PRIORITY
+	dsprite 11, 1,   3, 0, $03, 0 | X_FLIP | Y_FLIP | PRIORITY
 
 .Impossible: ; e0c26
 	db 4
-	dsprite  0, 0,   0, 0, $00, 0 | BEHIND_BG
-	dsprite  0, 0,   1, 0, $00, 0 | X_FLIP | BEHIND_BG
-	dsprite  1, 0,   0, 0, $00, 0 | Y_FLIP | BEHIND_BG
-	dsprite  1, 0,   1, 0, $00, 0 | X_FLIP | Y_FLIP | BEHIND_BG
+	dsprite  0, 0,   0, 0, $00, 0 | PRIORITY
+	dsprite  0, 0,   1, 0, $00, 0 | X_FLIP | PRIORITY
+	dsprite  1, 0,   0, 0, $00, 0 | Y_FLIP | PRIORITY
+	dsprite  1, 0,   1, 0, $00, 0 | X_FLIP | Y_FLIP | PRIORITY
 ; e0c37
 
 CardFlip_InitAttrPals: ; e0c37 (38:4c37)
--- a/engine/events.asm
+++ b/engine/events.asm
@@ -1106,4 +1106,5 @@
 ; 96c56
 
 INCLUDE "engine/scripting.asm"
+
 INCLUDE "engine/events_2.asm"
--- /dev/null
+++ b/engine/events/checkforhiddenitems.asm
@@ -1,0 +1,85 @@
+CheckForHiddenItems: ; b8172
+; Checks to see if there are hidden items on the screen that have not yet been found.  If it finds one, returns carry.
+	call GetMapScriptHeaderBank
+	ld [Buffer1], a
+; Get the coordinate of the bottom right corner of the screen, and load it in Buffer3/Buffer4.
+	ld a, [XCoord]
+	add SCREEN_WIDTH / 4
+	ld [Buffer4], a
+	ld a, [YCoord]
+	add SCREEN_HEIGHT / 4
+	ld [Buffer3], a
+; Get the pointer for the first BG event header in the map...
+	ld hl, wCurrMapBGEventHeaderPointer
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+; ... before even checking to see if there are any BG events on this map.
+	ld a, [wCurrMapBGEventCount]
+	and a
+	jr z, .nobgeventitems
+; For i = 1:wCurrMapBGEventCount...
+.loop
+; Store the counter in Buffer2, and store the BG event header pointer in the stack.
+	ld [Buffer2], a
+	push hl
+; Get the Y coordinate of the BG event.
+	call .GetFarByte
+	ld e, a
+; Is the Y coordinate of the BG event on the screen?  If not, go to the next BG event.
+	ld a, [Buffer3]
+	sub e
+	jr c, .next
+	cp SCREEN_HEIGHT / 2
+	jr nc, .next
+; Is the X coordinate of the BG event on the screen?  If not, go to the next BG event.
+	call .GetFarByte
+	ld d, a
+	ld a, [Buffer4]
+	sub d
+	jr c, .next
+	cp SCREEN_WIDTH / 2
+	jr nc, .next
+; Is this BG event a hidden item?  If not, go to the next BG event.
+	call .GetFarByte
+	cp BGEVENT_ITEM
+	jr nz, .next
+; Has this item already been found?  If not, set off the Itemfinder.
+	ld a, [Buffer1]
+	call GetFarHalfword
+	ld a, [Buffer1]
+	call GetFarHalfword
+	ld d, h
+	ld e, l
+	ld b, CHECK_FLAG
+	call EventFlagAction
+	ld a, c
+	and a
+	jr z, .itemnearby
+
+.next
+; Restore the BG event header pointer and increment it by the length of a BG event header.
+	pop hl
+	ld bc, 5
+	add hl, bc
+; Restore the BG event counter and decrement it.  If it hits zero, there are no hidden items in range.
+	ld a, [Buffer2]
+	dec a
+	jr nz, .loop
+
+.nobgeventitems
+	xor a
+	ret
+
+.itemnearby
+	pop hl
+	scf
+	ret
+; b81e2
+
+.GetFarByte: ; b81e2
+	ld a, [Buffer1]
+	call GetFarByte
+	inc hl
+	ret
+; b81ea
--- /dev/null
+++ b/engine/events/map_name_sign.asm
@@ -1,0 +1,274 @@
+MAP_NAME_SIGN_START EQU $60
+
+ReturnFromMapSetupScript:: ; b8000
+	xor a
+	ld [hBGMapMode], a
+	farcall .inefficient_farcall ; this is a waste of 6 ROM bytes and 6 stack bytes
+	ret
+; b800a
+
+; should have just been a fallthrough
+.inefficient_farcall ; b800a
+	ld a, [MapGroup]
+	ld b, a
+	ld a, [MapNumber]
+	ld c, a
+	call GetWorldMapLocation
+	ld [wCurrentLandmark], a
+	call .CheckNationalParkGate
+	jr z, .nationalparkgate
+
+	call GetMapEnvironment
+	cp GATE
+	jr nz, .not_gate
+
+.nationalparkgate
+	ld a, -1
+	ld [wCurrentLandmark], a
+
+.not_gate
+	ld hl, wEnteredMapFromContinue
+	bit 1, [hl]
+	res 1, [hl]
+	jr nz, .dont_do_map_sign
+
+	call .CheckMovingWithinLandmark
+	jr z, .dont_do_map_sign
+	ld a, [wCurrentLandmark]
+	ld [wPreviousLandmark], a
+
+	call .CheckSpecialMap
+	jr z, .dont_do_map_sign
+
+; Display for 60 frames
+	ld a, 60
+	ld [wLandmarkSignTimer], a
+	call LoadMapNameSignGFX
+	call InitMapNameFrame
+	farcall HDMATransfer_OnlyTopFourRows
+	ret
+
+.dont_do_map_sign
+	ld a, [wCurrentLandmark]
+	ld [wPreviousLandmark], a
+	ld a, $90
+	ld [rWY], a
+	ld [hWY], a
+	xor a
+	ld [hLCDCPointer], a
+	ret
+; b8064
+
+.CheckMovingWithinLandmark: ; b8064
+	ld a, [wCurrentLandmark]
+	ld c, a
+	ld a, [wPreviousLandmark]
+	cp c
+	ret z
+	cp SPECIAL_MAP
+	ret
+; b8070
+
+.CheckSpecialMap: ; b8070
+; These landmarks do not get pop-up signs.
+	cp -1
+	ret z
+	cp SPECIAL_MAP
+	ret z
+	cp RADIO_TOWER
+	ret z
+	cp LAV_RADIO_TOWER
+	ret z
+	cp UNDERGROUND_PATH
+	ret z
+	cp INDIGO_PLATEAU
+	ret z
+	cp POWER_PLANT
+	ret z
+	ld a, $1
+	and a
+	ret
+; b8089
+
+.CheckNationalParkGate: ; b8089
+	ld a, [MapGroup]
+	cp GROUP_ROUTE_35_NATIONAL_PARK_GATE
+	ret nz
+	ld a, [MapNumber]
+	cp MAP_ROUTE_35_NATIONAL_PARK_GATE
+	ret z
+	cp MAP_ROUTE_36_NATIONAL_PARK_GATE
+	ret
+; b8098
+
+
+PlaceMapNameSign:: ; b8098 (2e:4098)
+	ld hl, wLandmarkSignTimer
+	ld a, [hl]
+	and a
+	jr z, .disappear
+	dec [hl]
+	cp 60
+	ret z
+	cp 59
+	jr nz, .skip2
+	call InitMapNameFrame
+	call PlaceMapNameCenterAlign
+	farcall HDMATransfer_OnlyTopFourRows
+.skip2
+	ld a, $80
+	ld a, $70
+	ld [rWY], a
+	ld [hWY], a
+	ret
+
+.disappear
+	ld a, $90
+	ld [rWY], a
+	ld [hWY], a
+	xor a
+	ld [hLCDCPointer], a
+	ret
+
+
+LoadMapNameSignGFX: ; b80c6
+	ld de, MapEntryFrameGFX
+	ld hl, vTiles2 tile MAP_NAME_SIGN_START
+	lb bc, BANK(MapEntryFrameGFX), 14
+	call Get2bpp
+	ret
+; b80d3
+
+InitMapNameFrame: ; b80d3
+	hlcoord 0, 0
+	ld b, 2
+	ld c, 18
+	call InitMapSignAttrMap
+	call PlaceMapNameFrame
+	ret
+; b80e1
+
+
+PlaceMapNameCenterAlign: ; b80e1 (2e:40e1)
+	ld a, [wCurrentLandmark]
+	ld e, a
+	farcall GetLandmarkName
+	call .GetNameLength
+	ld a, SCREEN_WIDTH
+	sub c
+	srl a
+	ld b, $0
+	ld c, a
+	hlcoord 0, 2
+	add hl, bc
+	ld de, StringBuffer1
+	call PlaceString
+	ret
+
+.GetNameLength: ; b8101 (2e:4101)
+	ld c, 0
+	push hl
+	ld hl, StringBuffer1
+.loop
+	ld a, [hli]
+	cp "@"
+	jr z, .stop
+	cp "%"
+	jr z, .loop
+	inc c
+	jr .loop
+.stop
+	pop hl
+	ret
+
+
+InitMapSignAttrMap: ; b8115
+	ld de, AttrMap - TileMap
+	add hl, de
+	inc b
+	inc b
+	inc c
+	inc c
+	ld a, PAL_BG_TEXT | PRIORITY
+.loop
+	push bc
+	push hl
+.inner_loop
+	ld [hli], a
+	dec c
+	jr nz, .inner_loop
+	pop hl
+	ld de, SCREEN_WIDTH
+	add hl, de
+	pop bc
+	dec b
+	jr nz, .loop
+	ret
+; b812f
+
+PlaceMapNameFrame: ; b812f
+	hlcoord 0, 0
+	; top left
+	ld a, MAP_NAME_SIGN_START + 1
+	ld [hli], a
+	; top row
+	ld a, MAP_NAME_SIGN_START + 2
+	call .FillTopBottom
+	; top right
+	ld a, MAP_NAME_SIGN_START + 4
+	ld [hli], a
+	; left, first line
+	ld a, MAP_NAME_SIGN_START + 5
+	ld [hli], a
+	; first line
+	call .FillMiddle
+	; right, first line
+	ld a, MAP_NAME_SIGN_START + 11
+	ld [hli], a
+	; left, second line
+	ld a, MAP_NAME_SIGN_START + 6
+	ld [hli], a
+	; second line
+	call .FillMiddle
+	; right, second line
+	ld a, MAP_NAME_SIGN_START + 12
+	ld [hli], a
+	; bottom left
+	ld a, MAP_NAME_SIGN_START + 7
+	ld [hli], a
+	; bottom
+	ld a, MAP_NAME_SIGN_START + 8
+	call .FillTopBottom
+	; bottom right
+	ld a, MAP_NAME_SIGN_START + 10
+	ld [hl], a
+	ret
+; b815b
+
+.FillMiddle: ; b815b
+	ld c, SCREEN_WIDTH - 2
+	ld a, MAP_NAME_SIGN_START + 13
+.loop
+	ld [hli], a
+	dec c
+	jr nz, .loop
+	ret
+; b8164
+
+.FillTopBottom: ; b8164
+	ld c, 5
+	jr .enterloop
+
+.continueloop
+	ld [hli], a
+	ld [hli], a
+
+.enterloop
+	inc a
+	ld [hli], a
+	ld [hli], a
+	dec a
+	dec c
+	jr nz, .continueloop
+	ret
+; b8172
--- /dev/null
+++ b/engine/events/treemons.asm
@@ -1,0 +1,285 @@
+TreeMonEncounter: ; b81ea
+	farcall TrainerRankings_TreeEncounters
+
+	xor a
+	ld [TempWildMonSpecies], a
+	ld [CurPartyLevel], a
+
+	ld hl, TreeMonMaps
+	call GetTreeMonSet
+	jr nc, .no_battle
+
+	call GetTreeMons
+	jr nc, .no_battle
+
+	call GetTreeMon
+	jr nc, .no_battle
+
+	ld a, BATTLETYPE_TREE
+	ld [BattleType], a
+	ld a, 1
+	ld [ScriptVar], a
+	ret
+
+.no_battle
+	xor a
+	ld [ScriptVar], a
+	ret
+; b8219
+
+RockMonEncounter: ; b8219
+
+	xor a
+	ld [TempWildMonSpecies], a
+	ld [CurPartyLevel], a
+
+	ld hl, RockMonMaps
+	call GetTreeMonSet
+	jr nc, .no_battle
+
+	call GetTreeMons
+	jr nc, .no_battle
+
+	; 40% chance of an encounter
+	ld a, 10
+	call RandomRange
+	cp 4
+	jr nc, .no_battle
+
+	call SelectTreeMon
+	jr nc, .no_battle
+
+	ret
+
+.no_battle
+	xor a
+	ret
+; b823e
+
+	db $05 ; ????
+
+GetTreeMonSet: ; b823f
+; Return carry and treemon set in a
+; if the current map is in table hl.
+	ld a, [MapNumber]
+	ld e, a
+	ld a, [MapGroup]
+	ld d, a
+.loop
+	ld a, [hli]
+	cp -1
+	jr z, .not_in_table
+
+	cp d
+	jr nz, .skip2
+
+	ld a, [hli]
+	cp e
+	jr nz, .skip1
+
+	jr .in_table
+
+.skip2
+	inc hl
+.skip1
+	inc hl
+	jr .loop
+
+.not_in_table
+	xor a
+	ret
+
+.in_table
+	ld a, [hl]
+	scf
+	ret
+; b825e
+
+INCLUDE "data/wild/treemon_maps.asm"
+
+GetTreeMons: ; b82d2
+; Return the address of TreeMon table a in hl.
+; Return nc if table a doesn't exist.
+
+	cp NUM_TREEMON_SETS
+	jr nc, .quit
+
+	and a
+	jr z, .quit
+
+	ld e, a
+	ld d, 0
+	ld hl, TreeMons
+	add hl, de
+	add hl, de
+
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+
+	scf
+	ret
+
+.quit
+	xor a
+	ret
+; b82e8
+
+INCLUDE "data/wild/treemons.asm"
+
+GetTreeMon: ; b83e5
+	push hl
+	call GetTreeScore
+	pop hl
+	and a ; TREEMON_SCORE_BAD
+	jr z, .bad
+	cp TREEMON_SCORE_GOOD
+	jr z, .good
+	cp TREEMON_SCORE_RARE
+	jr z, .rare
+	ret
+
+.bad
+	; 10% chance of an encounter
+	ld a, 10
+	call RandomRange
+	and a
+	jr nz, NoTreeMon
+	jr SelectTreeMon
+
+.good
+	; 50% chance of an encounter
+	ld a, 10
+	call RandomRange
+	cp 5
+	jr nc, NoTreeMon
+	jr SelectTreeMon
+
+.rare
+	; 80% chance of an encounter
+	ld a, 10
+	call RandomRange
+	cp 8
+	jr nc, NoTreeMon
+	jr .skip
+.skip
+	ld a, [hli]
+	cp -1
+	jr nz, .skip
+	call SelectTreeMon
+	ret
+; b841f
+
+SelectTreeMon: ; b841f
+; Read a TreeMons table and pick one monster at random.
+
+	ld a, 100
+	call RandomRange
+.loop
+	sub [hl]
+	jr c, .ok
+	inc hl
+	inc hl
+	inc hl
+	jr .loop
+
+.ok
+	ld a, [hli]
+	cp -1
+	jr z, NoTreeMon
+
+	ld a, [hli]
+	ld [TempWildMonSpecies], a
+	ld a, [hl]
+	ld [CurPartyLevel], a
+	scf
+	ret
+
+NoTreeMon: ; b843b
+	xor a
+	ld [TempWildMonSpecies], a
+	ld [CurPartyLevel], a
+	ret
+; b8443
+
+GetTreeScore: ; b8443
+	call .CoordScore
+	ld [Buffer1], a
+	call .OTIDScore
+	ld [Buffer2], a
+	ld c, a
+	ld a, [Buffer1]
+	sub c
+	jr z, .rare
+	jr nc, .ok
+	add 10
+.ok
+	cp 5
+	jr c, .good
+
+.bad
+	xor a ; TREEMON_SCORE_BAD
+	ret
+
+.good
+	ld a, TREEMON_SCORE_GOOD
+	ret
+
+.rare
+	ld a, TREEMON_SCORE_RARE
+	ret
+; b8466
+
+.CoordScore: ; b8466
+	call GetFacingTileCoord
+	ld hl, 0
+	ld c, e
+	ld b, 0
+	ld a, d
+
+	and a
+	jr z, .next
+.loop
+	add hl, bc
+	dec a
+	jr nz, .loop
+.next
+
+	add hl, bc
+	ld c, d
+	add hl, bc
+
+	ld a, h
+	ld [hDividend], a
+	ld a, l
+	ld [hDividend + 1], a
+	ld a, 5
+	ld [hDivisor], a
+	ld b, 2
+	call Divide
+
+	ld a, [hQuotient + 1]
+	ld [hDividend], a
+	ld a, [hQuotient + 2]
+	ld [hDividend + 1], a
+	ld a, 10
+	ld [hDivisor], a
+	ld b, 2
+	call Divide
+
+	ld a, [hQuotient + 3]
+	ret
+; b849d
+
+.OTIDScore: ; b849d
+	ld a, [PlayerID]
+	ld [hDividend], a
+	ld a, [PlayerID + 1]
+	ld [hDividend + 1], a
+	ld a, 10
+	ld [hDivisor], a
+	ld b, 2
+	call Divide
+	ld a, [hQuotient + 3]
+	ret
+; b84b3
--- a/engine/events_3.asm
+++ /dev/null
@@ -1,692 +1,0 @@
-ReturnFromMapSetupScript:: ; b8000
-	xor a
-	ld [hBGMapMode], a
-	farcall .inefficient_farcall ; this is a waste of 6 ROM bytes and 6 stack bytes
-	ret
-; b800a
-
-; should have just been a fallthrough
-.inefficient_farcall ; b800a
-	ld a, [MapGroup]
-	ld b, a
-	ld a, [MapNumber]
-	ld c, a
-	call GetWorldMapLocation
-	ld [wCurrentLandmark], a
-	call .CheckNationalParkGate
-	jr z, .nationalparkgate
-
-	call GetMapEnvironment
-	cp GATE
-	jr nz, .not_gate
-
-.nationalparkgate
-	ld a, -1
-	ld [wCurrentLandmark], a
-
-.not_gate
-	ld hl, wEnteredMapFromContinue
-	bit 1, [hl]
-	res 1, [hl]
-	jr nz, .dont_do_map_sign
-
-	call .CheckMovingWithinLandmark
-	jr z, .dont_do_map_sign
-	ld a, [wCurrentLandmark]
-	ld [wPreviousLandmark], a
-
-	call .CheckSpecialMap
-	jr z, .dont_do_map_sign
-
-; Display for 60 frames
-	ld a, 60
-	ld [wLandmarkSignTimer], a
-	call LoadMapNameSignGFX
-	call InitMapNameFrame
-	farcall HDMATransfer_OnlyTopFourRows
-	ret
-
-.dont_do_map_sign
-	ld a, [wCurrentLandmark]
-	ld [wPreviousLandmark], a
-	ld a, $90
-	ld [rWY], a
-	ld [hWY], a
-	xor a
-	ld [hLCDCPointer], a
-	ret
-; b8064
-
-.CheckMovingWithinLandmark: ; b8064
-	ld a, [wCurrentLandmark]
-	ld c, a
-	ld a, [wPreviousLandmark]
-	cp c
-	ret z
-	cp SPECIAL_MAP
-	ret
-; b8070
-
-.CheckSpecialMap: ; b8070
-; These landmarks do not get pop-up signs.
-	cp -1
-	ret z
-	cp SPECIAL_MAP
-	ret z
-	cp RADIO_TOWER
-	ret z
-	cp LAV_RADIO_TOWER
-	ret z
-	cp UNDERGROUND_PATH
-	ret z
-	cp INDIGO_PLATEAU
-	ret z
-	cp POWER_PLANT
-	ret z
-	ld a, $1
-	and a
-	ret
-; b8089
-
-.CheckNationalParkGate: ; b8089
-	ld a, [MapGroup]
-	cp GROUP_ROUTE_35_NATIONAL_PARK_GATE
-	ret nz
-	ld a, [MapNumber]
-	cp MAP_ROUTE_35_NATIONAL_PARK_GATE
-	ret z
-	cp MAP_ROUTE_36_NATIONAL_PARK_GATE
-	ret
-; b8098
-
-
-PlaceMapNameSign:: ; b8098 (2e:4098)
-	ld hl, wLandmarkSignTimer
-	ld a, [hl]
-	and a
-	jr z, .disappear
-	dec [hl]
-	cp 60
-	ret z
-	cp 59
-	jr nz, .skip2
-	call InitMapNameFrame
-	call PlaceMapNameCenterAlign
-	farcall HDMATransfer_OnlyTopFourRows
-.skip2
-	ld a, $80
-	ld a, $70
-	ld [rWY], a
-	ld [hWY], a
-	ret
-
-.disappear
-	ld a, $90
-	ld [rWY], a
-	ld [hWY], a
-	xor a
-	ld [hLCDCPointer], a
-	ret
-
-
-LoadMapNameSignGFX: ; b80c6
-	ld de, MapEntryFrameGFX
-	ld hl, vTiles2 tile $60
-	lb bc, BANK(MapEntryFrameGFX), $e
-	call Get2bpp
-	ret
-; b80d3
-
-InitMapNameFrame: ; b80d3
-	hlcoord 0, 0
-	ld b, 2
-	ld c, 18
-	call InitMapSignAttrMap
-	call PlaceMapNameFrame
-	ret
-; b80e1
-
-
-PlaceMapNameCenterAlign: ; b80e1 (2e:40e1)
-	ld a, [wCurrentLandmark]
-	ld e, a
-	farcall GetLandmarkName
-	call .GetNameLength
-	ld a, SCREEN_WIDTH
-	sub c
-	srl a
-	ld b, $0
-	ld c, a
-	hlcoord 0, 2
-	add hl, bc
-	ld de, StringBuffer1
-	call PlaceString
-	ret
-
-.GetNameLength: ; b8101 (2e:4101)
-	ld c, 0
-	push hl
-	ld hl, StringBuffer1
-.loop
-	ld a, [hli]
-	cp "@"
-	jr z, .stop
-	cp "%"
-	jr z, .loop
-	inc c
-	jr .loop
-.stop
-	pop hl
-	ret
-
-
-InitMapSignAttrMap: ; b8115
-	ld de, AttrMap - TileMap
-	add hl, de
-	inc b
-	inc b
-	inc c
-	inc c
-	ld a, $87
-.loop
-	push bc
-	push hl
-.inner_loop
-	ld [hli], a
-	dec c
-	jr nz, .inner_loop
-	pop hl
-	ld de, SCREEN_WIDTH
-	add hl, de
-	pop bc
-	dec b
-	jr nz, .loop
-	ret
-; b812f
-
-PlaceMapNameFrame: ; b812f
-	hlcoord 0, 0
-	; top left
-	ld a, $61
-	ld [hli], a
-	; top row
-	ld a, $62
-	call .FillTopBottom
-	; top right
-	ld a, $64
-	ld [hli], a
-	; left, first line
-	ld a, $65
-	ld [hli], a
-	; first line
-	call .FillMiddle
-	; right, first line
-	ld a, $6b
-	ld [hli], a
-	; left, second line
-	ld a, $66
-	ld [hli], a
-	; second line
-	call .FillMiddle
-	; right, second line
-	ld a, $6c
-	ld [hli], a
-	; bottom left
-	ld a, $67
-	ld [hli], a
-	; bottom
-	ld a, $68
-	call .FillTopBottom
-	; bottom right
-	ld a, $6a
-	ld [hl], a
-	ret
-; b815b
-
-.FillMiddle: ; b815b
-	ld c, 18
-	ld a, $6d
-.loop
-	ld [hli], a
-	dec c
-	jr nz, .loop
-	ret
-; b8164
-
-.FillTopBottom: ; b8164
-	ld c, 5
-	jr .enterloop
-
-.continueloop
-	ld [hli], a
-	ld [hli], a
-
-.enterloop
-	inc a
-	ld [hli], a
-	ld [hli], a
-	dec a
-	dec c
-	jr nz, .continueloop
-	ret
-; b8172
-
-CheckForHiddenItems: ; b8172
-; Checks to see if there are hidden items on the screen that have not yet been found.  If it finds one, returns carry.
-	call GetMapScriptHeaderBank
-	ld [Buffer1], a
-; Get the coordinate of the bottom right corner of the screen, and load it in Buffer3/Buffer4.
-	ld a, [XCoord]
-	add SCREEN_WIDTH / 4
-	ld [Buffer4], a
-	ld a, [YCoord]
-	add SCREEN_HEIGHT / 4
-	ld [Buffer3], a
-; Get the pointer for the first BG event header in the map...
-	ld hl, wCurrMapBGEventHeaderPointer
-	ld a, [hli]
-	ld h, [hl]
-	ld l, a
-; ... before even checking to see if there are any BG events on this map.
-	ld a, [wCurrMapBGEventCount]
-	and a
-	jr z, .nobgeventitems
-; For i = 1:wCurrMapBGEventCount...
-.loop
-; Store the counter in Buffer2, and store the BG event header pointer in the stack.
-	ld [Buffer2], a
-	push hl
-; Get the Y coordinate of the BG event.
-	call .GetFarByte
-	ld e, a
-; Is the Y coordinate of the BG event on the screen?  If not, go to the next BG event.
-	ld a, [Buffer3]
-	sub e
-	jr c, .next
-	cp SCREEN_HEIGHT / 2
-	jr nc, .next
-; Is the X coordinate of the BG event on the screen?  If not, go to the next BG event.
-	call .GetFarByte
-	ld d, a
-	ld a, [Buffer4]
-	sub d
-	jr c, .next
-	cp SCREEN_WIDTH / 2
-	jr nc, .next
-; Is this BG event a hidden item?  If not, go to the next BG event.
-	call .GetFarByte
-	cp BGEVENT_ITEM
-	jr nz, .next
-; Has this item already been found?  If not, set off the Itemfinder.
-	ld a, [Buffer1]
-	call GetFarHalfword
-	ld a, [Buffer1]
-	call GetFarHalfword
-	ld d, h
-	ld e, l
-	ld b, CHECK_FLAG
-	call EventFlagAction
-	ld a, c
-	and a
-	jr z, .itemnearby
-
-.next
-; Restore the BG event header pointer and increment it by the length of a BG event header.
-	pop hl
-	ld bc, 5
-	add hl, bc
-; Restore the BG event counter and decrement it.  If it hits zero, there are no hidden items in range.
-	ld a, [Buffer2]
-	dec a
-	jr nz, .loop
-
-.nobgeventitems
-	xor a
-	ret
-
-.itemnearby
-	pop hl
-	scf
-	ret
-; b81e2
-
-.GetFarByte: ; b81e2
-	ld a, [Buffer1]
-	call GetFarByte
-	inc hl
-	ret
-; b81ea
-
-
-TreeMonEncounter: ; b81ea
-	farcall TrainerRankings_TreeEncounters
-
-	xor a
-	ld [TempWildMonSpecies], a
-	ld [CurPartyLevel], a
-
-	ld hl, TreeMonMaps
-	call GetTreeMonSet
-	jr nc, .no_battle
-
-	call GetTreeMons
-	jr nc, .no_battle
-
-	call GetTreeMon
-	jr nc, .no_battle
-
-	ld a, BATTLETYPE_TREE
-	ld [BattleType], a
-	ld a, 1
-	ld [ScriptVar], a
-	ret
-
-.no_battle
-	xor a
-	ld [ScriptVar], a
-	ret
-; b8219
-
-RockMonEncounter: ; b8219
-
-	xor a
-	ld [TempWildMonSpecies], a
-	ld [CurPartyLevel], a
-
-	ld hl, RockMonMaps
-	call GetTreeMonSet
-	jr nc, .no_battle
-
-	call GetTreeMons
-	jr nc, .no_battle
-
-	; 40% chance of an encounter
-	ld a, 10
-	call RandomRange
-	cp 4
-	jr nc, .no_battle
-
-	call SelectTreeMon
-	jr nc, .no_battle
-
-	ret
-
-.no_battle
-	xor a
-	ret
-; b823e
-
-	db $05 ; ????
-
-GetTreeMonSet: ; b823f
-; Return carry and treemon set in a
-; if the current map is in table hl.
-	ld a, [MapNumber]
-	ld e, a
-	ld a, [MapGroup]
-	ld d, a
-.loop
-	ld a, [hli]
-	cp -1
-	jr z, .not_in_table
-
-	cp d
-	jr nz, .skip2
-
-	ld a, [hli]
-	cp e
-	jr nz, .skip1
-
-	jr .in_table
-
-.skip2
-	inc hl
-.skip1
-	inc hl
-	jr .loop
-
-.not_in_table
-	xor a
-	ret
-
-.in_table
-	ld a, [hl]
-	scf
-	ret
-; b825e
-
-INCLUDE "data/wild/treemon_maps.asm"
-
-GetTreeMons: ; b82d2
-; Return the address of TreeMon table a in hl.
-; Return nc if table a doesn't exist.
-
-	cp NUM_TREEMON_SETS
-	jr nc, .quit
-
-	and a
-	jr z, .quit
-
-	ld e, a
-	ld d, 0
-	ld hl, TreeMons
-	add hl, de
-	add hl, de
-
-	ld a, [hli]
-	ld h, [hl]
-	ld l, a
-
-	scf
-	ret
-
-.quit
-	xor a
-	ret
-; b82e8
-
-INCLUDE "data/wild/treemons.asm"
-
-GetTreeMon: ; b83e5
-	push hl
-	call GetTreeScore
-	pop hl
-	and a ; TREEMON_SCORE_BAD
-	jr z, .bad
-	cp TREEMON_SCORE_GOOD
-	jr z, .good
-	cp TREEMON_SCORE_RARE
-	jr z, .rare
-	ret
-
-.bad
-	; 10% chance of an encounter
-	ld a, 10
-	call RandomRange
-	and a
-	jr nz, NoTreeMon
-	jr SelectTreeMon
-
-.good
-	; 50% chance of an encounter
-	ld a, 10
-	call RandomRange
-	cp 5
-	jr nc, NoTreeMon
-	jr SelectTreeMon
-
-.rare
-	; 80% chance of an encounter
-	ld a, 10
-	call RandomRange
-	cp 8
-	jr nc, NoTreeMon
-	jr .skip
-.skip
-	ld a, [hli]
-	cp -1
-	jr nz, .skip
-	call SelectTreeMon
-	ret
-; b841f
-
-SelectTreeMon: ; b841f
-; Read a TreeMons table and pick one monster at random.
-
-	ld a, 100
-	call RandomRange
-.loop
-	sub [hl]
-	jr c, .ok
-	inc hl
-	inc hl
-	inc hl
-	jr .loop
-
-.ok
-	ld a, [hli]
-	cp -1
-	jr z, NoTreeMon
-
-	ld a, [hli]
-	ld [TempWildMonSpecies], a
-	ld a, [hl]
-	ld [CurPartyLevel], a
-	scf
-	ret
-
-NoTreeMon: ; b843b
-	xor a
-	ld [TempWildMonSpecies], a
-	ld [CurPartyLevel], a
-	ret
-; b8443
-
-GetTreeScore: ; b8443
-	call .CoordScore
-	ld [Buffer1], a
-	call .OTIDScore
-	ld [Buffer2], a
-	ld c, a
-	ld a, [Buffer1]
-	sub c
-	jr z, .rare
-	jr nc, .ok
-	add 10
-.ok
-	cp 5
-	jr c, .good
-
-.bad
-	xor a ; TREEMON_SCORE_BAD
-	ret
-
-.good
-	ld a, TREEMON_SCORE_GOOD
-	ret
-
-.rare
-	ld a, TREEMON_SCORE_RARE
-	ret
-; b8466
-
-.CoordScore: ; b8466
-	call GetFacingTileCoord
-	ld hl, 0
-	ld c, e
-	ld b, 0
-	ld a, d
-
-	and a
-	jr z, .next
-.loop
-	add hl, bc
-	dec a
-	jr nz, .loop
-.next
-
-	add hl, bc
-	ld c, d
-	add hl, bc
-
-	ld a, h
-	ld [hDividend], a
-	ld a, l
-	ld [hDividend + 1], a
-	ld a, 5
-	ld [hDivisor], a
-	ld b, 2
-	call Divide
-
-	ld a, [hQuotient + 1]
-	ld [hDividend], a
-	ld a, [hQuotient + 2]
-	ld [hDividend + 1], a
-	ld a, 10
-	ld [hDivisor], a
-	ld b, 2
-	call Divide
-
-	ld a, [hQuotient + 3]
-	ret
-; b849d
-
-.OTIDScore: ; b849d
-	ld a, [PlayerID]
-	ld [hDividend], a
-	ld a, [PlayerID + 1]
-	ld [hDividend + 1], a
-	ld a, 10
-	ld [hDivisor], a
-	ld b, 2
-	call Divide
-	ld a, [hQuotient + 3]
-	ret
-; b84b3
-
-LoadFishingGFX: ; b84b3
-	ld a, [rVBK]
-	push af
-	ld a, $1
-	ld [rVBK], a
-
-	ld de, FishingGFX
-	ld a, [wPlayerGender]
-	bit 0, a
-	jr z, .got_gender
-	ld de, KrisFishingGFX
-.got_gender
-
-	ld hl, vTiles0 tile $02
-	call .LoadGFX
-	ld hl, vTiles0 tile $06
-	call .LoadGFX
-	ld hl, vTiles0 tile $0a
-	call .LoadGFX
-	ld hl, vTiles1 tile $7c
-	call .LoadGFX
-
-	pop af
-	ld [rVBK], a
-	ret
-; b84e3
-
-.LoadGFX: ; b84e3
-	lb bc, BANK(FishingGFX), 2
-	push de
-	call Get2bpp
-	pop de
-	ld hl, 2 tiles
-	add hl, de
-	ld d, h
-	ld e, l
-	ret
-; b84f2
-
-FishingGFX: ; b84f2
-INCBIN "gfx/overworld/chris_fish.2bpp"
-; b8582
-
-KrisFishingGFX: ; b8582
-INCBIN "gfx/overworld/kris_fish.2bpp"
-; b8612
--- a/engine/title.asm
+++ b/engine/title.asm
@@ -353,7 +353,7 @@
 	ld [hli], a ; tile id
 	inc e
 	inc e
-	ld a, 0 | BEHIND_BG
+	ld a, 0 | PRIORITY
 	ld [hli], a ; attributes
 	dec c
 	jr nz, .loop2
--- a/main.asm
+++ b/main.asm
@@ -373,7 +373,10 @@
 
 SECTION "bank2E", ROMX
 
-INCLUDE "engine/events_3.asm"
+INCLUDE "engine/events/map_name_sign.asm"
+INCLUDE "engine/events/checkforhiddenitems.asm"
+INCLUDE "engine/events/treemons.asm"
+INCLUDE "gfx/fishing.asm"
 INCLUDE "engine/radio.asm"
 INCLUDE "engine/mail_2.asm"