14 changed files with 453 additions and 125 deletions
--- a/LTTP_RND_GeneralBugfixes.asm
+++ b/LTTP_RND_GeneralBugfixes.asm
@@ -74,6 +74,8 @@ function hexto555(h) = ((((h&$FF)/8)<<10)|(((h>>8&$FF)/8)<<5)|(((h>>16&$FF)/8)<<
 !FLAG_OW_MIXED = $04
 !FLAG_OW_CROSSED = $02
 !FLAG_OW_BONKDROP = $02
+!FLAG_OW_CUSTOM_MAP = $02
+!FLAG_OW_ADJUST_DYNAMIC_MAP_SPRITE_POSITION = $04

 incsrc hooks.asm
 incsrc spriteswap.asm
--- a/boots.asm
+++ b/boots.asm
@@ -28,16 +28,19 @@ AddBonkTremors:
    JSL AddDashTremor : JSL Player_ApplyRumbleToSprites ; things we wrote over
 RTL
 ;--------------------------------------------------------------------------------
-BonkBreakableWall:
-    PHX : PHP
-        SEP #$30 ; set 8-bit accumulator and index registers
+ValidDashCheck:
+    PHP
+        SEP #$20
        LDA.l BootsModifier : CMP.b #$01 : BEQ +
-        LDA.l BootsEquipment : BNE + ; Check for Boots
-            PLP : PLX : LDA.w #$0000 : RTL
-        +
-    PLP : PLX
-    LDA.w LinkDashing : AND.w #$00FF ; things we wrote over
-RTL
+            LDA.l BootsEquipment : BEQ .exit
+        + LDA.w LinkDashing
+.exit
+    BEQ +
+        PLP : REP #$02
+        RTL
+    +
+    PLP : SEP #$02
+    RTL
 ;--------------------------------------------------------------------------------
 BonkRockPile:
    LDA.l BootsModifier : CMP.b #$01 : BEQ +
@@ -48,10 +51,7 @@ BonkRockPile:
 RTL
 ;--------------------------------------------------------------------------------
 GravestoneHook:
-    LDA.l BootsModifier : CMP.b #$01 : BEQ +
-    LDA.l BootsEquipment : BEQ .done ; Check for Boots
-    +
-    LDA.w LinkDashing : BEQ .done ; things we wrote over
+    JSL ValidDashCheck : BEQ .done ; things we wrote over
        JML moveGravestone
    .done
    JML GravestoneHook_continue
--- a/bossicons.asm
+++ b/bossicons.asm
@@ -17,15 +17,14 @@ DoDungeonMapBossIcon:
 	ASL
 	TAX

+	; get sprite pointer table
+	LDA.l $89C298 : STA.b Scrap00
+	LDA.w #$0089 : STA.b Scrap02
+	TXY
 	; get sprite pointer for room
-	LDA.l UWSpritesPointers,X
+	LDA.b [Scrap00], Y
 	STA.b Scrap00                ; pointer in $00
-	if !FEATURE_FIX_BASEROM
-		LDA.w #$0089
-	else
-		LDA.w #$0028 ; set the bank to 28 for now
-	endif
-	STA.b Scrap02
+	LDA.w #bank(UWSpritesData) : STA.b Scrap02
 	LDY.w #$0001 ; to skip the "sort"

 	; get first byte to make sure it isn't an empty room
--- a/bugfixes.asm
+++ b/bugfixes.asm
@@ -238,6 +238,18 @@ FixJingleGlitch:
 .exit
 	RTL
 ;--------------------------------------------------------------------------------
+FixSwimBump:
+	LDA.b LinkIncapacitatedTimer : BEQ .normal
+	LDA.b LinkJumping : BNE .normal
+	INC.b LinkJumping
+	BRA .not_diving
+.normal
+	LDA.b LinkJumping : BNE .continue ; what we wrote over
+.not_diving
+	PLA : PLA : PEA.w $87964E ; skip ahead, not diving
+.continue
+	RTL
+;--------------------------------------------------------------------------------
 ; Fix spawning with more hearts than capacity when less than 3 heart containers
 pushpc
        org $09F4AC ; <- module_death.asm:331
--- a/doorrando/hudadditions.asm
+++ b/doorrando/hudadditions.asm
@@ -167,9 +167,7 @@ DrHudDungeonItemsAdditions:
 					jsr ConvertToDisplay2 : sta.w $1644, y
 				+ iny #2 : lda.w #$24f5 : sta.w $1644, y
 				phx : ldx.b Scrap00
-						LDA.l CompassMode : BIT.w #$0002 : BNE .skip_map_check
-					 	LDA.l MapField : AND.l DungeonMask, x : BEQ .key_info_done ; must have map
-					.skip_map_check
+					LDA.l MapField : ORA.l MapCountDisplay : AND.l DungeonMask, x : BEQ .key_info_done ; must have map
 						plx : sep #$30 : lda.l ChestKeys, x : sta.b Scrap02
 				lda.l GenericKeys : bne +++
 					lda.b Scrap02 : !SUB.l DungeonCollectedKeys, x : sta.b Scrap02
--- a/follower.asm
+++ b/follower.asm
@@ -23,7 +23,7 @@ JSL SpritePrep_OldManFollower : NOP #2 : db $F0 ; BEQ
 org $9DFF18
 JSL SpriteDraw_OldManFollower
 org $9EE9BC
-JSL Follower_CheckMessageCollision
+JSL OldMan_WaitForCollision
 org $9EE9CC
 JSL OldMan_BecomeFollower : NOP #2

@@ -631,6 +631,15 @@ SpriteDraw_OldManFollower:
 dw 0,  0 : db $AC, $00, $00, $02
 dw 0,  8 : db $AE, $00, $00, $02

+OldMan_WaitForCollision:
+    PHA
+    LDA.w LinkIFrames : BEQ +
+        PLA : CLC
+        RTL
+    +
+    PLA
+    JML Follower_CheckMessageCollision
+
 OldMan_BecomeFollower:
    LDA.l FollowerTravelAllowed : CMP.b #$02 : BCC .set_follower_and_despawn
        PLA : PLA
--- a/gk/check_loot.asm
+++ b/gk/check_loot.asm
@@ -368,7 +368,13 @@ CheckEnemies:
 	ASL A
 	TAX

-	LDA.l UWSpritesPointers, X
+
+	; get sprite pointer table
+	LDA.l $89C298 : STA.b $04
+	LDA.w #$0089 : STA.b $06
+	TXY
+	; get sprite pointer for room
+	LDA.b [$04], Y
 	INC A ; skip the layered/unlayered indicator
 	STA.b $04
 	LDA.w #bank(UWSpritesData)
--- a/hooks.asm
+++ b/hooks.asm
@@ -120,7 +120,7 @@ JSL AddBonkTremors : NOP #4
 ; Bonk Breakable Walls
 ;--------------------------------------------------------------------------------
 org $81CF8E ; CF8E <- Bank01.asm : 11641 (LDA $0372 : AND.w #$00FF)
-JSL BonkBreakableWall : NOP #2
+JSL ValidDashCheck : NOP #2
 ;--------------------------------------------------------------------------------

 ;================================================================================
@@ -139,6 +139,11 @@ GravestoneHook_continue:
 org $87C106
 moveGravestone:
 ;--------------------------------------------------------------------------------
+org $899A30
+JSL ValidDashCheck : NOP #2
+org $899A3A
+JSL ValidDashCheck : NOP #2
+;--------------------------------------------------------------------------------

 ;================================================================================
 ; Jump Down Ledge
@@ -2102,6 +2107,11 @@ JSL FlipperScrollWarp
 ;--------------------------------------------------------------------------------
 ;org $878F51 ; <- 38F51 - Bank07.asm:2444 (JSR $AE54 ; $3AE54 IN ROM)
 ;JSL OnEnterWater : NOP
+;--------------------------------------------------------------------------------
+; Fixes getting bumped while swimming, unable to screen transition
+org $879632
+LinkState_Swimming:
+JSL FixSwimBump
 ;================================================================================
 ; Floodgate Softlock Fix
 ;--------------------------------------------------------------------------------
--- a/keydrop/standing_items.asm
+++ b/keydrop/standing_items.asm
@@ -89,7 +89,8 @@ org $80FDEE
 InitializeMirrorHDMA:

 org $89D62E
-UWSpritesPointers: ; 0x250 bytes for 0x128 rooms' 16-bit pointers
+;commenting out since this address can move
+;UWSpritesPointers: ; 0x250 bytes for 0x128 rooms' 16-bit pointers

 if !FEATURE_FIX_BASEROM
 	org $81DB67
--- a/menu/overworldmap.asm
+++ b/menu/overworldmap.asm
@@ -40,7 +40,7 @@ dw $0000

 warnpc $8ABE2E
 org $8ABE2E
-; located posx/posy, dislocated posx/posy, prize pox/posy
+; located posx/posy, dislocated posx/posy, prize posx/posy
 ; located = proper location of icon (default: if you have map)
 ; dislocated = location of icon if proper location is hidden from player
 ; highest bit on first posx indicates which world it should show in
@@ -49,27 +49,27 @@ WorldMapIcon_pos:
 .hc
 dw $FF00, $FF00, $FF00, $FF00, $FF00, $FF00
 .ep
-dw $0F31, $0620, $FF00, $FF00, $0F31, $0620
+dw $0F30, $06E0, $FF00, $FF00, $0F30, $06E0
 .dp
-dw $0108, $0D70, $FF00, $FF00, $0108, $0D70
+dw $0170, $0E50, $FF00, $FF00, $0170, $0E50
 .at
 dw $FF00, $FF00, $FF00, $FF00, $FF00, $FF00
 .sp
-dw $8759, $0ED0, $FF00, $FF00, $8759, $0ED0
+dw $8790, $0FD0, $FF00, $FF00, $8790, $0FD0
 .pod
-dw $8F40, $0620, $FF00, $FF00, $8F40, $0620
+dw $8F30, $06E0, $FF00, $FF00, $8F30, $06E0
 .mm
-dw $8100, $0CA0, $FF00, $FF00, $8100, $0CA0
+dw $8160, $0D80, $FF00, $FF00, $8160, $0D80
 .sw
-dw $8082, $00B0, $FF00, $FF00, $8082, $00B0
+dw $80F0, $0160, $FF00, $FF00, $80F0, $0160
 .ip
-dw $8CA0, $0DA0, $FF00, $FF00, $8CA0, $0DA0
+dw $8CB0, $0E80, $FF00, $FF00, $8CB0, $0E80
 .toh
-dw $08D0, $0080, $FF00, $FF00, $08D0, $0080
+dw $0900, $0130, $FF00, $FF00, $0900, $0130
 .tt
-dw $81D0, $0780, $FF00, $FF00, $81D0, $0780
+dw $8240, $0840, $FF00, $FF00, $8240, $0840
 .tr
-dw $8F11, $0103, $FF00, $FF00, $8F11, $0103
+dw $8F30, $01B0, $FF00, $FF00, $8F30, $01B0
 .gt
 dw $FF00, $FF00, $FF00, $FF00, $FF00, $FF00

@@ -324,21 +324,34 @@ WorldMap_DrawTile:
 	SEP #$20
 	LDX.b Scrap0B : TXA : STA.b (OAMPtr+2)
 	INC.b OAMPtr+2
-	JSR WorldMap_CalculateOAMCoordinates
-	LDX.b Scrap0A : BEQ +
-		LDA.b Scrap0E : CLC : ADC.b #$04 : STA.b Scrap0E
-		LDA.b Scrap0F : CLC : ADC.b #$04 : STA.b Scrap0F
-	+
-	LDX.b Scrap0B : BEQ +
-		LDA.b Scrap0E : SEC : SBC.b #$04 : STA.b Scrap0E
-		LDA.b Scrap0F : SEC : SBC.b #$04 : STA.b Scrap0F
-    +
 	REP #$20
-	PLA : STA.b Scrap00
+	LDA.l $7EC10A : BIT.w #$4000 : SEP #$20 : BNE .raw_coords ; use raw OAM coordinates
+		JSR WorldMap_CalculateOAMCoordinates
+		BCS .apply_offsets
+		REP #$20
+		BRA .exit
+	.raw_coords
+		STA.b Scrap0E
+		LDA.l $7EC108 : STA.b Scrap0F
+.apply_offsets
+	LDX.b Scrap0A : BNE .aligned ; prize number/overlay: no offset
+	LDX.b Scrap0B : BEQ +
+		; 16x16 sprite: -8 pixels
+		LDA.b Scrap0E : SEC : SBC.b #$08 : STA.b Scrap0E
+		LDA.b Scrap0F : SBC.b #$08 : STA.b Scrap0F
+		BRA .aligned
+	+
+	; 8x8 sprite: -4 pixels
+	LDA.b Scrap0E : SEC : SBC.b #$04 : STA.b Scrap0E
+	LDA.b Scrap0F : SBC.b #$04 : STA.b Scrap0F
+.aligned
+	REP #$20
 	LDA.b Scrap0E : STA.b (OAMPtr)
 	INC.b OAMPtr : INC.b OAMPtr
 	LDA.b Scrap0C : STA.b (OAMPtr)
 	INC.b OAMPtr : INC.b OAMPtr
+.exit
+	PLA : STA.b Scrap00
 RTS

 ; Y - dungeon index
@@ -423,6 +436,78 @@ WorldMap_CheckPrizeCollected:
 RTS

 warnpc $8AC3B1
+
+org $8AC3B6
+; ---------------------------------------------------------------------------------------------------
+; Y coordinate calculation: Quadratic approximation
+; Formula: Y_oam = 0x16 + (Y * 118 >> 12) + ((Y>>4)^2 * 49 >> 8)
+; Accurate to within ±1.5 pixels across entire range
+; ---------------------------------------------------------------------------------------------------
+	REP #$20
+	LDA.l $7EC108 : ASL #4 ; world Y coordinate
+	PHA
+		; calculate linear term: (Y * 118) >> 12
+		SEP #$20
+		LDA.b #$76
+		JSR WorldMap_MultiplyAxB ; (Y>>4) * 118
+		REP #$20
+		STA.b Scrap00 ; linear term stored at high byte (Scrap01)
+
+		; calculate quadratic term: ((Y>>4)^2 * 49) >> 8
+		LDA.b 1,S
+		SEP #$20
+		XBA : TAX : XBA : TXA
+		JSR WorldMap_MultiplyAxB ; (Y>>4) ^ 2
+		LDA.b #$31
+		JSR WorldMap_MultiplyAxB ; multiply by 49
+		XBA ; quadratic term
+
+		; combine: 0x16 + linear_term + quadratic_term
+		CLC : ADC.b Scrap01 ; add linear term
+		ADC.b #$16 ; add fixed offset
+		STA.b Scrap0F
+		REP #$20
+	PLA ; world Y coordinate
+
+; ---------------------------------------------------------------------------------------------------
+; Calculate half_width for perspective: 91 + (Y_shifted * 28 / 256)
+; The world map appears wider at the bottom than at the top, simulating perspective
+; Top (Y=0): X range 0x26-0xDC (half-width: 91), Bottom (Y=FFF): X range 0x08-0xF6 (half-width: 119)
+; ---------------------------------------------------------------------------------------------------
+	SEP #$20
+	LDA.b #$1C ; width increase factor
+	JSR WorldMap_MultiplyAxB
+	XBA : CLC : ADC.b #$5B ; add fixed half-width
+	STA.b Scrap00
+
+; ---------------------------------------------------------------------------------------------------
+; Calculate X offset: X_offset = (X_from_center * half_width * 2) / 256
+; where X_from_center = (world_X >> 4) - 128
+; The center X is at 129 (0x81)
+; ---------------------------------------------------------------------------------------------------
+	REP #$20
+	LDA.l $7EC10A : LSR #4 ; world X coordinate
+	SEP #$20
+	SEC : SBC.b #$80 ; subtract 128 (center point)
+	PHP ; preserve carry
+		BPL + : EOR.b #$FF : INC : + ; absolute value
+		PHA
+			LDA.b Scrap00 : ASL : XBA ; half-width x 2
+		PLA
+		JSR WorldMap_MultiplyAxB
+		XBA
+	PLP : BCS +
+		STA.b Scrap00
+		LDA.b #$81 : SEC : SBC.b Scrap00 ; center X position - offset
+		BRA .store_and_exit
+	+ CLC : ADC.b #$81 ; center X position + offset
+
+.store_and_exit
+	STA.b Scrap0E
+	SEP #$30
+	JMP WorldMap_CalculateOAMCoordinates_exit_successfully
+
+warnpc $8AC433
 pullpc

 WorldMap_LoadChrHalfSlot:
--- a/newitems.asm
+++ b/newitems.asm
@@ -1190,7 +1190,7 @@ MaybeFlagCompassTotalPickup:
 RTL

 MaybeFlagMapTotalPickup:
-;        LDA.l MapHUDMode : AND.b #$0F : BEQ .done
+        LDA.l MapHUDMode : AND.b #$0F : BEQ .done
        LDA.w DungeonID : BMI .done
                LDA.w ItemReceiptID : CMP.b #$33 : BEQ .set_flag
                        REP #$20
@@ -1212,7 +1212,7 @@ MaybeFlagDungeonTotalsEntrance:
                LDA.l CompassMode : AND.w #$000F : BEQ .maps ; Skip if we're not showing compass counts
                        JSR FlagCompassCount
                .maps
-                LDA.l MapHUDMode : AND.w #$000F
+                LDA.l MapHUDMode : AND.w #$000F : BEQ .done
                        LDX.w DungeonID
                        JSR FlagMapCount
        .done
--- a/owrando.asm
+++ b/owrando.asm
@@ -6,18 +6,18 @@ OWFlags:
 dw 0
 OWReserved:
 dw 0
+OWFog:
+db 0 ; 0: disabled - 1: fog clears after visiting either world version of a screen - 2: fog clears after visiting the current world version of a screen
 org $aa8010
 OWVersionInfo:
 dw $0000, $0000, $0000, $0000, $0000, $0000, $0000, $0000

 ;Hooks
-org $82a929
-OWDetectTransitionReturn:
+org $82a92C
+JSL OWDetectEdgeTransition ; JSL Link_CheckForEdgeScreenTransition

-org $82a939
-OverworldHandleTransitions_SpecialTrigger:
-JSL OWDetectEdgeTransition
-BCS OWDetectTransitionReturn
+org $82a936
+OverworldHandleTransitions_PerformEdgeTransition:

 org $82a999
 jsl OWEdgeTransition : nop #4 ;LDA $02A4E3,X : ORA $7EF3CA
@@ -106,20 +106,34 @@ jsl OWOldManSpeed
 org $8aba6c  ; < ? - Bank0a.asm:474 ()
 jsl OWMapWorldCheck16 : nop

-; Mixed Overworld Map
+; Custom Overworld Map
 org $8ABA99
 WorldMap_LoadDarkWorldMap:
 LDA.b GameMode : CMP.b #$14 ; attract module
 BEQ .vanilla_light
-    LDA.l OWMode+1 : AND.b #!FLAG_OW_MIXED : BNE .mixed
+    LDA.l OWFlags : AND.b #!FLAG_OW_CUSTOM_MAP : BNE .custom
        LDA.b OverworldIndex : AND.b #$40
        BEQ .vanilla_light
-    .mixed
-    PHB : PHK : PLB
-        JSL LoadMapDarkOrMixed
-    PLB
+    .custom
+    STZ.b ScrapBuffer72 ; clear tile swap flag
+    JSL LoadMapDarkOrCustom_long
+    NOP #2
+warnpc $8ABAB5
 .vanilla_light ; $0ABAB5

+org $8ABB32
+JSL LoadMapOppositeWorld
+
+org $8ABF78
+JSL WorldMap_SkipHandleSprites
+
+org $8ABA22
+JSL MoveLinkMapSprite
+
+org $8ABFF0
+JSL MoveMirrorPortalMapSprite
+; Could insert similar hooks at $8AB860 and $8AB8AC for flute spots
+
 ;(replacing -> LDA $8A : AND.b #$40)
 org $80d8c4  ; < ? - Bank00.asm:4068 ()
 jsl OWWorldCheck
@@ -227,6 +241,7 @@ OWMapWorldCheck16:
 {
    lda.b GameMode : cmp.w #$0014 : beq .return ; attract module, return with Z flag cleared
        jsl OWWorldCheck16
+        eor.b ScrapBuffer72 ; apply tile swap flag
    .return
    rtl
 }
@@ -387,51 +402,110 @@ OWMarkVisited:
    RTL
 }

-LoadMapDarkOrMixed:
+LoadMapDarkOrCustom:
 {
-    CMP.b #!FLAG_OW_MIXED : REP #$30 : BEQ .mixed
+    CMP.b #!FLAG_OW_CUSTOM_MAP : REP #$30 : BEQ .custom
        LDX.w #$03FE ; draw vanilla Dark World (what we wrote over)
        .copy_next
            LDA.w WorldMap_DarkWorldTilemap,X : STA.w GFXStripes,X
            DEX : DEX : BPL .copy_next
        BRL .end
-    .mixed
+    .custom
        LDX.b OverworldIndex
        LDA.l OWTileWorldAssoc,X
-        STA.b Scrap00
-        LDY.w #$139C
-        LDX.w #$003F
-        .next_screen
-            PHX
-            LDA.l OWTileWorldAssoc,X
-            EOR.b Scrap00
            AND.w #$0040
-            BEQ .light
-                TYX : BRA .copy_screen
-            .light
-                TXA : AND.w #$0024 : LSR : TAX
-                TYA : SEC : SBC.l LWQuadrantOffsets,X
-                TYX : TAY
-            .copy_screen ; more efficient to have X on the right side
-            LDA.w $C739+$00,Y : STA.b $00,X
-            LDA.w $C739+$02,Y : STA.b $02,X
-            LDA.w $C739+$20,Y : STA.b $20,X
-            LDA.w $C739+$22,Y : STA.b $22,X
-            LDA.w $C739+$40,Y : STA.b $40,X
-            LDA.w $C739+$42,Y : STA.b $42,X
-            LDA.w $C739+$60,Y : STA.b $60,X
-            LDA.w $C739+$62,Y : STA.b $62,X
-            TXY : PLX
-            DEY : DEY : DEY : DEY ; move one screen left
-            TXA : AND.w #$0007 : BNE .same_row
-                TYA : SEC : SBC.w #$0060 : TAY ; move one screen row up
+        EOR.b ScrapBuffer72 ; apply tile swap flag
+        BEQ .draw_lw
+            LDA.w #OWMapGridDark
+            BRA .draw_dw
+        .draw_lw
+            LDA.w #OWMapGridLight
+        .draw_dw
+        STA.b Scrap00
+        LDA.w #OWMapGridLight>>16 ; current program bank
+        STA.b Scrap02
+        LDX.w #$139C
+        LDY.w #$003F
+        .next_cell
+            PHY
+            JSR GetOWMapTilemapOffsetToCopy
+            .copy_cell ; more efficient to have X on the right side
+            TAY
+            LDA.w WorldMap_LightWorldTilemap+$00,Y : STA.b $00,X
+            LDA.w WorldMap_LightWorldTilemap+$02,Y : STA.b $02,X
+            LDA.w WorldMap_LightWorldTilemap+$20,Y : STA.b $20,X
+            LDA.w WorldMap_LightWorldTilemap+$22,Y : STA.b $22,X
+            LDA.w WorldMap_LightWorldTilemap+$40,Y : STA.b $40,X
+            LDA.w WorldMap_LightWorldTilemap+$42,Y : STA.b $42,X
+            LDA.w WorldMap_LightWorldTilemap+$60,Y : STA.b $60,X
+            LDA.w WorldMap_LightWorldTilemap+$62,Y : STA.b $62,X
+            PLY
+            DEX : DEX : DEX : DEX ; move one screen left
+            TYA : AND.w #$0007 : BNE .same_row
+                TXA : SEC : SBC.w #$0060 : TAX ; move one screen row up
            .same_row
-            DEX
-        BPL .next_screen
+            DEY
+        BPL .next_cell
    .end
    SEP #$30
    LDA.b #$15 : STA.b NMIINCR ; what we wrote over
-    RTL
+    RTS
+}
+
+GetOWMapTilemapOffsetToCopy:
+{
+    LDA.l OWFog : AND.w #$00FF
+    CMP.w #$0001 : BEQ .parallel_fog
+    CMP.w #$0002 : BNE .no_fog
+
+    LDA.b [Scrap00],Y : AND.w #$00FF
+    PHX
+    TAX
+    BIT.w #$0040
+    BEQ .light_fog
+        LDA.l Overworld_ActualScreenID-$40,X : ORA.w #$0040
+        BRA .dark_fog
+    .light_fog
+        LDA.l Overworld_ActualScreenID,X
+    .dark_fog
+    AND.w #$00FF
+    TAX
+    LDA.l OverworldEventDataWRAM,X
+    .check_visited_flag
+    PLX
+    AND.w #$0080 : BNE .no_fog
+    LDA.w #($D350-$C739)
+    RTS
+
+    .parallel_fog
+    LDA.b [Scrap00],Y : AND.w #$003F
+    PHX
+    TAX
+    LDA.l Overworld_ActualScreenID,X
+    AND.w #$00FF
+    TAX
+    LDA.l OverworldEventDataWRAM,X
+    ORA.l OverworldEventDataWRAM+$40,X
+    BRA .check_visited_flag
+
+    .no_fog
+    LDA.b [Scrap00],Y : AND.w #$0038 : ASL : ASL : ASL : ASL
+    STA.b Scrap03
+    LDA.b [Scrap00],Y
+    BIT.w #$0040
+    BEQ .light
+        AND.w #$0007
+        ASL : ASL : ADC.w #$1000 : ADC.b Scrap03
+        RTS
+    .light
+    PHX
+    AND.w #$0024 : LSR : TAX
+    LDA.b [Scrap00],Y
+    AND.w #$0007
+    ASL : ASL : ADC.w #$1000 : ADC.b Scrap03
+    SEC : SBC.l LWQuadrantOffsets,X
+    PLX
+    RTS

    LWQuadrantOffsets:
    dw $1000-$0210 ; top left
@@ -441,6 +515,91 @@ LoadMapDarkOrMixed:
    dw $0400+$0210 ; bottom right
 }

+LoadMapDarkOrCustom_long:
+{
+    PHB : LDA.b #WorldMap_DarkWorldTilemap>>16 : PHA : PLB
+        LDA.l OWFlags : AND.b #!FLAG_OW_CUSTOM_MAP
+        JSR LoadMapDarkOrCustom
+    PLB
+    RTL
+}
+LoadMapOppositeWorld:
+{
+    LDA.l OWFlags : AND.b #!FLAG_OW_ADJUST_DYNAMIC_MAP_SPRITE_POSITION : BEQ .vanilla
+    LDA.b ScrapBuffer72 : BEQ +
+        LDA.b Joy1B_All : AND.b #$30 : BNE .vanilla
+            STZ.b ScrapBuffer72 ; clear tile swap flag
+            BRA .new_tiles
+    + LDA.b Joy1B_New : AND.b #$30 : BEQ .vanilla
+        LDA.b #$40 : STA.b ScrapBuffer72 ; set tile swap flag
+.new_tiles
+    JSL OverworldMap_InitGfx+$10 ; load palette
+        DEC.w SubModuleInterface
+        LDA.b #$0F : STA.b INIDISPQ
+    JSL LoadMapDarkOrCustom_long
+    LDA.b #$24 : STA.w SFX3
+    PLA : PLA : PEA.w $BBAF ; skip everything upon return
+.vanilla
+    LDA.b Joy1B_New : AND.b #$70 ; what we wrote over
+    RTL
+}
+WorldMap_SkipHandleSprites:
+{
+    LDA.l OWFlags : AND.b #!FLAG_OW_ADJUST_DYNAMIC_MAP_SPRITE_POSITION : BEQ .vanilla
+    LDA.b ScrapBuffer72 : BEQ .vanilla ; skip draw if no tile swap
+        PLA : PLA : PEA.w $C3AF ; exit without drawing sprites
+    RTL 
+.vanilla
+    LDA.b FrameCounter : AND.b #$10 ; what we wrote over
+    RTL
+}
+
+MoveLinkMapSprite:
+{
+    STA.l $7EC10A ; what we overwrote
+    SEP #$20
+    JSR MoveMapSprite
+    REP #$20
+    RTL
+}
+
+MoveMirrorPortalMapSprite:
+{
+    STA.l $7EC109 ; what we overwrote
+    JSR MoveMapSprite
+    RTL
+}
+
+MoveMapSprite:
+{
+    LDA.l OWFlags : AND.b #!FLAG_OW_ADJUST_DYNAMIC_MAP_SPRITE_POSITION : BEQ .return
+    LDA.l $7EC10B : AND.b #$0E : LSR
+    STA.b Scrap00
+    LDA.l $7EC109 : AND.b #$0E : ASL : ASL
+    ADC.b Scrap00
+    STA.b Scrap00
+    LDX.b OverworldIndex
+    LDA.l OWTileWorldAssoc,X
+    LDX.b Scrap00
+    AND.b #$40
+    BEQ .light
+        LDA.l OWMapGridDarkPositionByAbsolutePosition,X
+        BRA .dark
+    .light
+        LDA.l OWMapGridLightPositionByAbsolutePosition,X
+    .dark
+    TAX
+    AND.b #$07 : ASL
+    STA.b Scrap00
+    LDA.l $7EC10B : AND.b #$01 : ORA.b Scrap00 : STA.l $7EC10B
+    TXA
+    AND.b #$38 : LSR : LSR
+    STA.b Scrap00
+    LDA.l $7EC109 : AND.b #$01 : ORA.b Scrap00 : STA.l $7EC109
+    .return
+    RTS
+}
+
 OWBonkDropPrepSprite:
 {
    LDA.b IndoorsFlag : BEQ +
@@ -609,27 +768,26 @@ OWBonkDrops:
    JSL OWBonkSpritePrep

    .mark_collected ; S = Collected, FlagBitmask, X (row + 2)
-    PLA : BNE + ; S = FlagBitmask, X (row + 2)
-    TYX : JSL Sprite_IsOnscreen : BCC +
-        LDA.b IndoorsFlag : BEQ ++
+    PLA : BEQ + : - : JMP .return : + ; S = FlagBitmask, X (row + 2)
+    TYX : JSL Sprite_IsOnscreen : BCC -
+        LDA.b IndoorsFlag : BEQ +
            LDA.l RoomDataWRAM[$0120].high : ORA.b 1,S : STA.l RoomDataWRAM[$0120].high
            LDA.w $0400 : ORA.b 1,S : STA.w $0400
            BRA .increment_collection
-        ++
+        +
        LDA.b OverworldIndex
        BIT.b #$40 : BEQ + 
                LDA.l ProgressIndicator : CMP.b #$02
-                LDA.b OverworldIndex : BCS ++ : AND.b #$BF
-            ++
+            LDA.b OverworldIndex : BCS + : AND.b #$BF
        +
        TAX : LDA.l OverworldEventDataWRAM,X : ORA.b 1,S : STA.l OverworldEventDataWRAM,X
        
        .increment_collection
        REP #$20
            LDA.l TotalItemCounter : INC : STA.l TotalItemCounter
-            INC.w UpdateHUDFlag
        SEP #$20
-    + BRA .return
+        LDA.b #$01 : STA.l UpdateHUDFlag
+        BRA .return

    ; spawn itemget item
    .spawn_item ; A = item id ; Y = bonk sprite slot ; S = Collected, FlagBitmask, X (row + 2)
@@ -738,20 +896,29 @@ OWBonkSpritePrep:
 org $aa9000
 OWDetectEdgeTransition:
 {
-    JSL OWDestroyItemSprites
+    JSL Link_CheckForEdgeScreenTransition ; what we wrote over
+    BCS .return
    STZ.w RandoOverworldWalkDist
    LDA.l OWMode : ORA.l OWMode+1 : BEQ .vanilla
+        PHY
        JSR OWShuffle
-        LDA.w RandoOverworldTargetEdge : BMI .special
+        PLY
+        LDA.w RandoOverworldTargetEdge : BMI .specialOrDisabled
    .vanilla
-    REP #$31 : LDX.b Scrap02 : LDA.b OverworldMap16Buffer ; what we wrote over
+    CLC ; allow transition
    RTL
+    .specialOrDisabled
+    CMP.b #$FF : BNE .special
+    STZ.w RandoOverworldTargetEdge
+    PHB
+    JML Link_CheckForEdgeScreenTransition_prevent_transition
    .special
    REP #$30
    AND.w #$0003 : TAY : ASL : TAX
    LDA.w #$007F : STA.w RandoOverworldTargetEdge
    JSR OWLoadSpecialArea
    SEC
+    .return
    RTL
 }
 OWDetectSpecialTransition:
@@ -761,17 +928,23 @@ OWDetectSpecialTransition:
    TXA : AND.w #$0002 : LSR
    STA.w RandoOverworldTerrain
    LDA.l OWSpecialDestIndex,X : BIT.w #$0080 : BEQ .switch_to_edge
+    AND.w #$00FF : CMP.w #$00FF : BEQ .disabled
    AND.w #$0003 : TAY : ASL : TAX
    .normal
    JSR OWLoadSpecialArea
    .return
    RTL

+    .disabled
+    SEP #$30
+    STZ.w RandoOverworldTargetEdge
+    RTL
+
    .switch_to_edge
    STA.w RandoOverworldTargetEdge
    LDA.l OWEdgeDataOffset,X : STA.w RandoOverworldEdgeAddr
    PLA : SEP #$30 : PLA ; delete 3 bytes from stack
-    JSL Link_CheckForEdgeScreenTransition : BCS .return ; Link_CheckForEdgeScreenTransition
+    JSL Link_CheckForEdgeScreenTransition : BCS .return
    LDA.l Overworld_CheckForSpecialOverworldTrigger_Direction,X : STA.b Scrap00 : CMP.b #$08 : BNE .hobo
        LSR : STA.b LinkPosY : STZ.b BG2V ; move Link and camera to edge
        LDA.b #$06 : STA.b Scrap02
@@ -790,16 +963,15 @@ OWDetectSpecialTransition:
        LDA.b #$FF : STA.b LinkRecoilZ : STA.b $C7
        STZ.b $3D : STZ.b LinkSpeed : STZ.w $032B : STZ.w LinkDashing : STZ.b LinkState
    .not_dashing
-    PLA : REP #$31 : PLA ; delete 3 bytes from stack
-    LDX.b Scrap02
-    LDA.b OverworldMap16Buffer
-    JML OverworldHandleTransitions_SpecialTrigger+6
+    PLA : PLA : PLA ; delete 3 bytes from stack
+    JML OverworldHandleTransitions_PerformEdgeTransition
 }
 OWEdgeTransition:
 {
    LDA.l OWMode : ORA.l OWMode+1 : BEQ .unshuffled
    LDY.w RandoOverworldTargetEdge : STZ.w RandoOverworldTargetEdge
    CPY.b #$7F : BEQ .unshuffled
+        JSL OWDestroyItemSprites
        REP #$10
        LDX.w RandoOverworldEdgeAddr
        PHB : PHK : PLB
@@ -1488,7 +1660,7 @@ dw $0b28, $0b38, $0010, $0b30, $1515, $1018, $0001, $000e
 dw $0b70, $0ba0, $0030, $0b88, $1515, $1020, $0000, $000f
 dw $0a40, $0b10, $00d0, $0aa8, $1d1d, $1006, $0000, $0010
 dw $0350, $0390, $0040, $0370, $1821, $2060, $0000, $0011
-dw $0670, $06a8, $0038, $068c, $1b23, $2002, $0000, $0012
+dw $0670, $06a8, $0038, $068c, $1b23, $2004, $0000, $0012
 dw $0898, $09b0, $0118, $0924, $1b24, $2054, $0000, $0013
 dw $0a40, $0ba0, $0160, $0af0, $2525, $100e, $0000, $0014
 dw $0c70, $0c90, $0020, $0c80, $1e26, $2002, $0000, $0015
@@ -1520,7 +1692,7 @@ dw $0b28, $0b38, $0010, $0b30, $5555, $1018, $0001, $002e
 dw $0b70, $0ba0, $0030, $0b88, $5555, $1020, $0000, $002f
 dw $0a40, $0b10, $00d0, $0aa8, $5d5d, $1006, $0000, $0030
 dw $0350, $0390, $0040, $0370, $5861, $2060, $0000, $0031
-dw $0670, $06a8, $0038, $068c, $5b63, $2002, $0000, $0032
+dw $0670, $06a8, $0038, $068c, $5b63, $2004, $0000, $0032
 dw $0898, $09b0, $0118, $0924, $5b64, $2054, $0000, $0033
 dw $0a40, $0ba0, $0160, $0af0, $6565, $100e, $0000, $0034
 dw $0c70, $0c90, $0020, $0c80, $5e66, $2002, $0000, $0035
@@ -1827,16 +1999,42 @@ db $74, $4e, $10, $b1, $00, $1c
 UWBonkPrizeData:
 db $ff, $00, $02, $b5, $00, $08

-; temporary fix - murahdahla replaces one of the bonk tree prizes
-;    so we copy the sprite table here and update the pointer
-;    longterm solution should be to spawn in murahdahla separately
-org $89AE2A
-Overworld_Sprites_Screen1A_2:
-db $08, $0F, $41 ; yx:{ 0x080, 0x0F0 }
-db $0E, $0C, $41 ; yx:{ 0x0E0, 0x0C0 }
-db $11, $0D, $E3 ; yx:{ 0x110, 0x0D0 }
-db $18, $0A, $D8 ; yx:{ 0x180, 0x0A0 }
-db $18, $0F, $45 ; yx:{ 0x180, 0x0F0 }
-db $FF ; END
-org $89CA55
-dw Overworld_Sprites_Screen1A_2&$FFFF
+org $AABC80 ;PC 153C80
+OWMapGridLight:
+db $00, $01, $02, $03, $04, $05, $06, $07
+db $08, $09, $0A, $0B, $0C, $0D, $0E, $0F
+db $10, $11, $12, $13, $14, $15, $16, $17
+db $18, $19, $1A, $1B, $1C, $1D, $1E, $1F
+db $20, $21, $22, $23, $24, $25, $26, $27
+db $28, $29, $2A, $2B, $2C, $2D, $2E, $2F
+db $30, $31, $32, $33, $34, $35, $36, $37
+db $38, $39, $3A, $3B, $3C, $3D, $3E, $3F
+OWMapGridDark:
+db $40, $41, $42, $43, $44, $45, $46, $47
+db $48, $49, $4A, $4B, $4C, $4D, $4E, $4F
+db $50, $51, $52, $53, $54, $55, $56, $57
+db $58, $59, $5A, $5B, $5C, $5D, $5E, $5F
+db $60, $61, $62, $63, $64, $65, $66, $67
+db $68, $69, $6A, $6B, $6C, $6D, $6E, $6F
+db $70, $71, $72, $73, $74, $75, $76, $77
+db $78, $79, $7A, $7B, $7C, $7D, $7E, $7F
+
+org $AABD00 ;PC 153D00
+OWMapGridLightPositionByAbsolutePosition:
+db $00, $01, $02, $03, $04, $05, $06, $07
+db $08, $09, $0A, $0B, $0C, $0D, $0E, $0F
+db $10, $11, $12, $13, $14, $15, $16, $17
+db $18, $19, $1A, $1B, $1C, $1D, $1E, $1F
+db $20, $21, $22, $23, $24, $25, $26, $27
+db $28, $29, $2A, $2B, $2C, $2D, $2E, $2F
+db $30, $31, $32, $33, $34, $35, $36, $37
+db $38, $39, $3A, $3B, $3C, $3D, $3E, $3F
+OWMapGridDarkPositionByAbsolutePosition:
+db $00, $01, $02, $03, $04, $05, $06, $07
+db $08, $09, $0A, $0B, $0C, $0D, $0E, $0F
+db $10, $11, $12, $13, $14, $15, $16, $17
+db $18, $19, $1A, $1B, $1C, $1D, $1E, $1F
+db $20, $21, $22, $23, $24, $25, $26, $27
+db $28, $29, $2A, $2B, $2C, $2D, $2E, $2F
+db $30, $31, $32, $33, $34, $35, $36, $37
+db $38, $39, $3A, $3B, $3C, $3D, $3E, $3F
--- a/ram.asm
+++ b/ram.asm
@@ -235,6 +235,8 @@ CurrentYItem = $7E0303            ;
 AButtonAct = $7E0308              ; Bitfield for A-actions. $80 = Carry/toss | $02 Prayer | $01 = Tree pull
 CarryAct = $7E0309                ; Bitfield for carrying. $02 = Tossing | $01 = Lifting
                                  ;
+LinkIFrames = $7E031F             ; Countdown for Link's invincibility frames after taking damage.
+                                  ;
 LinkSwimDirection = $7E0340       ; Bitfield for swim direction. (.... udlr)
                                  ;
 LinkDeepWater = $7E0345           ; Set when Link is in deep water.
@@ -874,6 +876,8 @@ endmacro
 %assertRAM(UseY1, $7E0301)
 %assertRAM(CurrentYItem, $7E0303)
 %assertRAM(AButtonAct, $7E0308)
+%assertRAM(CarryAct, $7E0309)
+%assertRAM(LinkIFrames, $7E031F)
 %assertRAM(LinkSwimDirection, $7E0340)
 %assertRAM(LinkDeepWater, $7E0345)
 %assertRAM(TileActIce, $7E0348)
--- a/vanillalabels.asm
+++ b/vanillalabels.asm
@@ -99,6 +99,7 @@ HandleFollowersAfterMirroring                              = $87AA8B
 LinkHop_FindArbitraryLandingSpot                           = $87E359
 Link_HandleMovingAnimation_FullLongEntry                   = $87E68F
 Link_CheckForEdgeScreenTransition                          = $87F413
+Link_CheckForEdgeScreenTransition_prevent_transition       = $87F42C
 Sprite_CheckIfPlayerPreoccupied                            = $87F4AA
 FlashGanonTowerPalette_next_thunder                        = $87FA81
 FlashGanonTowerPalette_bright_white                        = $87FAAC
@@ -221,6 +222,8 @@ Ancilla29_MilestoneItemReceipt_skip_crystal_sfx            = $88CAE5
 Ancilla29_MilestoneItemReceipt_no_sparkle                  = $88CB2E
 Ancilla_SetOAM_XY                                          = $88F6F3
 Ancilla_AddAncilla                                         = $899CCE
+WorldMap_CalculateOAMCoordinates_exit_successfully         = $8AC51F
+WorldMap_MultiplyAxB                                       = $8AC57F
 UpdateHUD                                                  = $8DDFA9
 UpdateEquippedItem                                         = $8DDFAF
 DrawProgressIcons                                          = $8DE9C8
@@ -295,6 +298,7 @@ WorldMap_RedXChars                                         = $8ABF70
 WorldMap_CalculateOAMCoordinates                           = $8AC3B1
 WorldMap_HandleSpriteBlink                                 = $8AC52E
 WorldMapIcon_AdjustCoordinate                              = $8AC59B
+WorldMap_LightWorldTilemap                                 = $8AC739
 WorldMap_DarkWorldTilemap                                  = $8AD739
 DungeonMapRoomMarkerYBase                                  = $8AE803
 DungeonMapBossRooms                                        = $8AE817