From 17939339bcd8d8c90e3334b38fd621684ed97826 Mon Sep 17 00:00:00 2001
From: Kara Alexandra <ardnaxelarak@gmail.com>
Date: Mon, 12 Jan 2026 20:30:08 -0600
Subject: [PATCH] Start tracking separated sections

---
 dungeon_map/check_loot.asm         | 149 ++++++++++++++++++--
 dungeon_map/current_room_map.asm   | 145 +++++++++++++++++--
 dungeon_map/data/spiral_stairs.asm |   3 +-
 dungeon_map/data/split_room.asm    | 214 +++++++++++++++++++++++++++++
 dungeon_map/main.asm               |   1 +
 5 files changed, 492 insertions(+), 20 deletions(-)
 create mode 100644 dungeon_map/data/split_room.asm

diff --git a/dungeon_map/check_loot.asm b/dungeon_map/check_loot.asm
index 17bdc26..28ecc4a 100644
--- a/dungeon_map/check_loot.asm
+++ b/dungeon_map/check_loot.asm
@@ -5,7 +5,7 @@ CheckLoot:
 	REP #$30
 	PHB : PHX : PHY
 
-	STA.b $00
+	STA.b $CA
 
 	LDA.b $06 : PHA
 	LDA.b $0E : PHA
@@ -16,7 +16,8 @@ CheckLoot:
 	AND.w #$00FF
 	STA.b $0E
 
-	LDA.b $00
+	LDA.b $CA
+	AND.w #$00FF
 	ASL A
 	TAX
 
@@ -80,7 +81,9 @@ CheckLoot:
 	RTL
 
 CheckChests:
-	LDA.b $00
+	LDA.b $CA
+	AND.w #$00FF
+	STA.b $00
 	ASL A
 	TAX
 
@@ -90,6 +93,7 @@ CheckChests:
 
 	LDA.w #$0008
 	STA.b $04
+	STZ.b $06
 
 	LDY.w #$FFFD
 .increment_mask
@@ -106,6 +110,10 @@ CheckChests:
 	CMP.b $00
 	BNE .next_chest
 
+	JSR CheckChestSection
+	INC.b $06
+	BCC .increment_mask
+
 	LDA.l SaveDataWRAM, X
 	AND.b $04
 	BNE .increment_mask ; already got item
@@ -119,6 +127,10 @@ CheckChests:
 	RTS
 
 CheckBoss:
+	LDA.b $CA
+	AND.w #$00FF
+	STA.b $04
+
 	LDX.w #$FFFA
 .next_boss
 	INX #6
@@ -127,7 +139,7 @@ CheckBoss:
 	RTS
 
 .check
-	CMP.b $00
+	CMP.b $04
 	BNE .next_boss
 
 	TXY
@@ -170,6 +182,10 @@ CheckBoss:
 	BRA .next_boss
 
 CheckPrize:
+	LDA.b $CA
+	AND.w #$00FF
+	STA.b $04
+
 	LDX.w #$FFFD
 .next_prize
 	INX #3
@@ -178,7 +194,7 @@ CheckPrize:
 	RTS
 
 .check
-	CMP.b $00
+	CMP.b $04
 	BNE .next_prize
 
 	TXY
@@ -202,7 +218,8 @@ CheckPrize:
 	BRA .next_prize
 
 CheckPots:
-	LDA.b $00
+	LDA.b $CA
+	AND.w #$00FF
 	ASL A
 	TAX
 
@@ -242,7 +259,18 @@ CheckPots:
 	LDA.l DungeonMask, X : STA.b $08
 
 .mask_set
-	LDA.b $00 : ASL A : TAX
+	TXA
+	JSR CheckPotSection
+	BCS +
+		PLX
+		PLA
+		BRA .next_pot
++
+
+	LDA.b $CA
+	AND.w #$00FF
+	ASL A
+	TAX
 if !FEATURE_FIX_BASEROM
 	LDA.l SpriteDropData, X
 else
@@ -264,7 +292,8 @@ endif
 	RTS
 
 CheckEnemies:
-	LDA.b $00
+	LDA.b $CA
+	AND.w #$00FF
 	ASL A
 	TAX
 
@@ -279,7 +308,10 @@ CheckEnemies:
 .next_enemy
 	LDA.b [$04], Y
 	AND.w #$00FF
-	CMP.w #$00FF : BEQ .done
+	CMP.w #$00FF
+	BNE +
+		JMP .done
+	+
 	LDA.b [$04], Y
 	BIT.w #$8000 : BNE .overlord
 	INY : INY
@@ -333,13 +365,25 @@ CheckEnemies:
 	LDA.l DungeonMask, X : STA.b $08
 
 .mask_set
-	LDA.b $00 : ASL A : TAX
+	TXA
+	JSR CheckEnemySection
+	BCS +
+		PLX
+		PLA
+		BRA .next_enemy
++
+
+	LDA.b $CA
+	AND.w #$00FF
+	ASL A
+	TAX
+
 	LDA.l SpriteDropData, X
 	PLX
 	AND.b $08
 	BEQ .not_obtained
 	PLA
-	BRA .next_enemy
+	JMP .next_enemy
 
 .not_obtained
 	PLA
@@ -380,3 +424,86 @@ GetLootClass:
 .done
 	PLX
 	RTS
+
+macro DefineGetFooSection(type, offset)
+Get<type>Section:
+	PHX
+	LDA.b $CA
+	AND.w #$00FF
+	ASL A
+	TAX
+	LDA.l SplitRooms, X
+	TAX
+
+	LDA.l SplitRooms, X
+	AND.w #$00FF
+	STA.b $CE
+	BEQ .found
+
+	INX
+.check_next_section
+	PHX
+	LDA.l SplitRooms+<offset>, X
+	TAX
+-
+	LDA.l SplitRooms, X
+	AND.w #$00FF
+	CMP.w #$00FF
+	BEQ .not_this_section
+	CMP.b $CC
+	BEQ .plx_found
+
+	INX
+	BRA -
+
+.not_this_section
+	PLX
+	TXA : CLC : ADC.w #$000A : TAX
+	DEC.b $CE
+	BNE .check_next_section
+	BRA .found
+
+.plx_found
+	PLX
+
+.found
+	PLX
+	LDA.b $CE
+	RTS
+endmacro
+
+macro DefineCheckFooSection(type)
+Check<type>Section:
+	STA.b $CC
+
+	LDA.b $CB
+	AND.w #$00FF
+	BEQ .yes
+
+	JSR Get<type>Section
+
+	LDA.b $CB
+	AND.w #$00FF
+	LSR A : LSR A : LSR A : LSR A
+	DEC A
+	CMP.b $CE
+	BEQ .yes
+
+.no
+	CLC
+	RTS
+
+.yes
+	SEC
+	RTS
+endmacro
+
+%DefineGetFooSection(Door, 2)
+%DefineGetFooSection(Chest, 4)
+%DefineGetFooSection(Pot, 6)
+%DefineGetFooSection(Enemy, 8)
+
+%DefineCheckFooSection(Door)
+%DefineCheckFooSection(Chest)
+%DefineCheckFooSection(Pot)
+%DefineCheckFooSection(Enemy)
diff --git a/dungeon_map/current_room_map.asm b/dungeon_map/current_room_map.asm
index 3b2e1e5..553e3f7 100644
--- a/dungeon_map/current_room_map.asm
+++ b/dungeon_map/current_room_map.asm
@@ -8,8 +8,11 @@ DrawWackyDoorRandoStuff:
 
 	STZ.w GFXStripes
 
-	LDA.b RoomIndex
-	AND.w #$00FF
+	JSL DetectLinksSection
+	INC A
+	XBA
+	ASL A : ASL A : ASL A : ASL A
+	ORA.b RoomIndex
 	STA.l CurrentDisplayedRoom
 
 DrawCurrentSupertile:
@@ -28,6 +31,7 @@ DrawCurrentSupertile:
 
 	; multiply room id by 24 to get index in doors table
 	LDA.l CurrentDisplayedRoom
+	AND.w #$00FF
 	TAX
 	LDA.l DoorOffset, X
 	AND.w #$00FF
@@ -70,6 +74,7 @@ ClearDoorSlotScratch:
 
 DrawFullRoomTile:
 	LDA.b $CA
+	AND.w #$00FF
 	PHX
 	ASL A
 	TAX
@@ -81,6 +86,8 @@ DrawFullRoomTile:
 	PLY
 
 	LDA.b $CA
+	AND.w #$0FFF
+
 	CMP.w #$003F : BEQ .top_right
 	CMP.w #$0096 : BEQ .top_right
 	CMP.w #$007E : BEQ .top_left
@@ -207,7 +214,10 @@ CheckEdgesTable:
 	CLC : ADC.b $00
 	ADC.b $02
 	XBA
-	ORA.l CurrentDisplayedRoom
+	STA.b $0C
+	LDA.l CurrentDisplayedRoom
+	AND.w #$00FF
+	ORA.b $0C
 	STA.b $0C
 
 	PHX
@@ -236,7 +246,10 @@ CheckInRoomTable:
 	CLC : ADC.b $00
 	ADC.b $02
 	XBA
-	ORA.l CurrentDisplayedRoom
+	STA.b $0C
+	LDA.l CurrentDisplayedRoom
+	AND.w #$00FF
+	ORA.b $0C
 	STA.b $0C
 
 	PHX
@@ -270,13 +283,32 @@ GetConnection:
 	BEQ .not_found
 
 	STA.b $0C
+	STA.b $CA
 	LDA.b $08
 	JSR GetWhichDoorPosition
+	PHA
 	XBA
 	ORA.b $0C
 	STA.b $0C
+
+	PLA
+	CLC : ADC.b $00 : ADC.b $00 : ADC.b $00
+	PHX
+	TAX
+	LDA.l IncomingDoorMap, X
+	AND.w #$00FF
+	PLX
+	STA.b $CC
+	JSR GetDoorSection
+	INC A
+	ASL A : ASL A : ASL A : ASL A
+	XBA
+	ORA.b $0C
+	STA.b $0C
+
 	JSR CheckCanSeeConnector
 	BCC .nope
+
 	LDA.b $0C
 	RTS
 
@@ -380,6 +412,15 @@ DrawSide:
 	LDY.w #$0002
 
 -
+	LDA.l CurrentDisplayedRoom
+	STA.b $CA
+	LDA.b $00
+	ASL A
+	CLC : ADC.b $00
+	ADC.b $02
+	JSR CheckDoorSection
+	BCC +
+
 	JSR GetConnection
 	BMI +
 	INC.b $06
@@ -459,6 +500,7 @@ DrawSide:
 DrawStairs:
 	PHX
 	LDA.l CurrentDisplayedRoom
+	AND.w #$00FF
 	TAX
 	LDA.w SpiralPropsIndex, X
 	AND.w #$00FF
@@ -571,6 +613,7 @@ GetSpecificRoomVisibility:
 DrawDropOrWarp:
 	PHX
 	LDA.l CurrentDisplayedRoom
+	AND.w #$00FF
 	STA.b $00
 
 	LDX.w #$0000
@@ -644,7 +687,7 @@ DrawSingleConnectedRoom:
 
 	TYX
 	LDA.l DoorSlots+1, X
-	AND.w #$00FF
+	AND.w #$000F
 	CMP.w #$0003
 	BNE +
 	LDA.l DoorSlots, X
@@ -1305,10 +1348,12 @@ DoorsMapSelectCursor:
 
 	ASL A
 	TAX
-	LDA.l DoorSlots, X
 
-	STA.l CurrentDisplayedRoom
 	REP #$30
+
+	LDA.l DoorSlots, X
+	AND.w #$F0FF
+	STA.l CurrentDisplayedRoom
 	STZ.w GFXStripes
 	JSL ClearDoorsMapBG1
 	JSL ClearDoorsMapBG2
@@ -1416,7 +1461,7 @@ ClearDoorsMapBG2:
 
 GetRoomEntrance:
 	PHX : PHY
-	LDY.w #$0085
+	LDY.w #$0076 ; entrance IDs 76 - 82 are dropdowns, handle those later
 -
 	DEY
 	BMI .not_found
@@ -1581,3 +1626,87 @@ DrawDoorsStairs:
 
 .done
 	RTS
+
+DetectLinksSection:
+	LDA.b RoomIndex
+	ASL A
+	TAX
+	LDA.l SplitRooms, X
+	TAX
+	LDA.l SplitRooms, X
+	AND.w #$00FF
+	STA.b $00
+	BEQ .done
+
+	LDA.b LinkPosX
+	LSR A
+	AND.w #$00FF
+	INC A
+	STA.b $02
+
+	LDA.b LinkPosY
+	LSR A
+	AND.w #$00FF
+	INC A
+	STA.b $04
+
+	LDA.b LinkLayer
+	AND.w #$00FF
+	INC A
+	STA.b $06
+
+	INX
+.next_section
+	PHX
+	LDA.l SplitRooms, X
+	TAX
+.next_area
+	LDA.l SplitRooms, X
+	AND.w #$00FF
+	CMP.w #$00FF
+	BEQ .not_this_section
+
+	AND.w $06
+	BEQ .not_this_area
+
+	LDA.l SplitRooms+1, X ; x minimum
+	AND.w #$00FF
+	CMP.b $02
+	BCS .not_this_area
+
+	LDA.l SplitRooms+2, X ; x maximum
+	AND.w #$00FF
+	INC A
+	CMP.b $02
+	BCC .not_this_area
+
+	LDA.l SplitRooms+3, X ; y minimum
+	AND.w #$00FF
+	CMP.b $04
+	BCS .not_this_area
+
+	LDA.l SplitRooms+4, X ; y maximum
+	AND.w #$00FF
+	INC A
+	CMP.b $04
+	BCC .not_this_area
+
+	BRA .found
+
+.not_this_area
+	INX #5
+	BRA .next_area
+
+.not_this_section
+	PLX
+	TXA : CLC : ADC.w #$000A : TAX
+	DEC.b $00
+	BNE .next_section
+	BRA .done
+
+.found
+	PLX
+
+.done
+	LDA.b $00
+	RTL
diff --git a/dungeon_map/data/spiral_stairs.asm b/dungeon_map/data/spiral_stairs.asm
index 058b8d8..508eb6b 100644
--- a/dungeon_map/data/spiral_stairs.asm
+++ b/dungeon_map/data/spiral_stairs.asm
@@ -13,7 +13,7 @@ db $00, $07, $00, $04, $00, $00, $00, $01, $7D, $0A, $00, $00, $00, $00, $04, $0
 db $01, $00, $04, $00, $00, $01, $07, $00, $00, $00, $00, $0A, $00, $00, $07, $00
 db $80, $00, $00, $00, $00, $01, $01, $00, $00, $00, $00, $00, $01, $00, $07, $00
 db $85, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
-db $8A, $04, $8F, $00, $00, $00, $00, $00, $00, $00, $0A, $00, $00, $00, $00, $00
+db $8A, $92, $8F, $00, $00, $00, $00, $00, $00, $00, $0A, $00, $00, $00, $00, $00
 db $04
 
 SpiralProps:
@@ -52,6 +52,7 @@ db $02, $00, $02, $02, $09 ; ($80) Tower Usains (2nd value unused)
 db $02, $00, $02, $02, $09 ; ($85) Tower Dark2 (2nd value unused)
 db $02, $00, $02, $02, $09 ; ($8A) Tower Dark1 (2nd value unused)
 db $01, $00, $09 ; ($8F) Mire2
+db $01, $00, $0A ; ($92) Mire south of Torch Room
 
 SpiralLabelOffsets:
 db 1, -9
diff --git a/dungeon_map/data/split_room.asm b/dungeon_map/data/split_room.asm
new file mode 100644
index 0000000..b508bbd
--- /dev/null
+++ b/dungeon_map/data/split_room.asm
@@ -0,0 +1,214 @@
+IncomingDoorMap:
+; north
+db $06, $07, $08
+; west
+db $09, $0A, $0B
+; south
+db $00, $01, $02
+; east
+db $03, $04, $05
+
+macro d(label)
+dw <label>-SplitRooms
+endmacro
+
+SplitRooms:
+;  0/8       1/9       2/A       3/B       4/C       5/D       6/E       7/F
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.14) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.75) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.7d) : %d(.no) : %d(.no)
+
+;  0/8       1/9       2/A       3/B       4/C       5/D       6/E       7/F
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.a9) : %d(.aa) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.b2) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.b9) : %d(.no) : %d(.no) : %d(.bc) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no) : %d(.d1) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.d6) : %d(.no)
+%d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no) : %d(.no)
+
+%d(.no)
+
+.no
+db $00
+
+.no_items
+db $FF
+
+.14
+db $02
+%d(..areas3) : %d(..doors3) : %d(.no_items) : %d(.no_items) : %d(.no_items)
+%d(..areas2) : %d(..doors2) : %d(.no_items) : %d(.no_items) : %d(.no_items)
+..areas3
+db $03, $C0, $FF, $00, $50
+db $03, $00, $28, $30, $50
+db $03, $30, $50, $D0, $FF
+db $FF
+..doors3
+db $03, $06, $09
+db $FF
+..areas2
+db $FF
+..doors2
+db $05, $0B
+db $FF
+
+.75
+db $02
+%d(..areas) : %d(..doors) : %d(..chests) : %d(.no_items) : %d(..enemies)
+..areas
+db $03, $80, $FF, $00, $FF
+db $FF
+..doors
+db $08
+db $FF
+..chests
+db $00
+db $FF
+..enemies
+db $06, $07
+db $FF
+
+.7d ; GT warp maze (section next to rando room)
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(..pots) : %d(..enemies)
+..areas
+db $03, $00, $FF, $00, $80
+db $03, $00, $80, $80, $FF
+db $03, $CA, $DA, $9A, $A6
+db $FF
+..doors
+db $05
+db $FF
+..pots
+db $00, $01, $02, $03
+db $FF
+..enemies
+db $00, $01, $02, $03, $09
+db $FF
+
+.a9
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(..pots) : %d(.no_items)
+..areas
+db $03, $00, $40, $70, $FF
+db $03, $00, $FF, $A0, $FF
+db $03, $C0, $FF, $70, $FF
+db $FF
+..doors
+db $04, $07, $0A
+db $FF
+..pots
+db $04, $05, $06, $07
+db $FF
+
+.aa
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(.no_items) : %d(.no_items)
+..areas
+db $02, $00, $80, $00, $FF
+db $FF
+..doors
+db $03, $06
+db $FF
+
+.b2
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(..pots) : %d(..enemies)
+..areas
+db $02, $00, $FF, $00, $80
+db $03, $60, $A0, $00, $40
+db $FF
+..doors
+db $01, $09
+db $FF
+..pots
+db $00, $01, $02, $03, $04, $05, $06
+db $FF
+..enemies
+db $00, $01, $02, $03, $04
+db $FF
+
+.b9
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(.no_items) : %d(.no_items)
+..areas
+db $01, $00, $20, $28, $60
+db $01, $00, $20, $28, $60
+db $01, $E0, $FF, $58, $60
+db $FF
+..doors
+db $03, $09
+db $FF
+
+.bc
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(..pots) : %d(.no_items)
+..areas
+db $03, $2C, $4C, $CA, $FF
+db $FF
+..doors
+db $06
+db $FF
+..pots
+db $0C, $0D
+db $FF
+
+.d1
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(..pots) : %d(..enemies)
+..areas
+db $03, $80, $FF, $00, $A8
+db $FF
+..doors
+db $02
+db $FF
+..pots
+db $02, $03, $04, $05
+db $FF
+..enemies
+db $00, $01, $07
+db $FF
+
+.d6
+db $01
+%d(..areas) : %d(..doors) : %d(.no_items) : %d(.no_items) : %d(..enemies)
+..areas
+db $03, $00, $80, $00, $FF
+db $FF
+..doors
+db $00
+db $FF
+..enemies
+db $00, $01, $02
+db $FF
diff --git a/dungeon_map/main.asm b/dungeon_map/main.asm
index 20e5ed8..d9ce2ae 100644
--- a/dungeon_map/main.asm
+++ b/dungeon_map/main.asm
@@ -37,3 +37,4 @@ incsrc blink_loot.asm
 incsrc data/doors_display.asm
 incsrc data/spiral_stairs.asm
 incsrc data/fall_warps.asm
+incsrc data/split_room.asm