479 lines
8.9 KiB
NASM
479 lines
8.9 KiB
NASM
; =========================================================
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org $0EDE49
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JSL Overworld_CheckForSpecialOverworldTrigger
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RTL
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pullpc
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Overworld_CheckForSpecialOverworldTrigger:
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{
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PHB : PHK : PLB
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REP #$31
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JSR GetMap16Tile
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LDA.l Map16Definitions,X : AND.w #$01FF : STA.b $00
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LDX.w #$000C ; Size of table
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.check_next_screen
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LDA.b $00
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.check_next_tile
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DEX
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DEX
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BMI .exit
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CMP.l .tile_type,X : BNE .check_next_tile
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LDA.b $8A : CMP.l .screen_id, X : BNE .check_next_screen
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;--------------------------------------------------------
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LDA.l .special_id,X
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STA.b $A0
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SEP #$20
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LDA.l .direction,X
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STA.b $67
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STA.w $0410
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STA.w $0416
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LDX.w #$0004
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.continue_shifting
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DEX
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LSR A
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BCC .continue_shifting
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STX.w $0418
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STX.w $069C
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LDA.b #$17
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STA.b $11
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LDA.b #$0B
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STA.b $10
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.exit
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SEP #$30
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PLB
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RTL
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; .tile_type
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; dw $0105
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; dw $01E4
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; dw $00AD
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; dw $00B9
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; .screen_id
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; dw $0000 ; OW 00
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; dw $002D ; OW 2D
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; dw $000F ; OW 0F
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; dw $0081 ; OW 81
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; .direction
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; dw $0008
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; dw $0002
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; dw $0008
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; dw $0008
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; .special_id
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; dw $0180 ; OW 80
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; dw $0181 ; OW 81
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; dw $0182 ; OW 82
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; dw $0189 ; OW 89
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; corresponding warp types that lead to special overworld areas
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.tile_type
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dw $01EF ; Maku Tree Entrance
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dw $01EF ; Tree House Entrance
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dw $00AD ; Zora Falls Entrance
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dw $00B9
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dw $01EF ; Tree House Entrance
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dw $00B7 ; Tiny House Entrance
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; Lost woods, Hyrule Castle Bridge, Entrance to Zora falls, and in Zora Falls...
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.screen_id
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dw $002A ; Maku Tree
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dw $0018 ; Mushroom Grotto
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dw $000F ; Graveyard
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dw $0081
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dw $0017 ; South of Graveyard
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dw $0033 ; Loom Beach
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; Direction Link will face when he enters the special area
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.direction
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dw $0008, $0008, $0008, $0008, $0008, $0008
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; Exit value for the special area. In Hyrule Magic these are those White markers.
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.special_id
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dw $0180, $0181, $0182, $0189, $0181, $0191
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}
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GetMap16Tile:
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{
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LDA.b $20 : CLC : ADC.w #$000C : STA.b $00
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SEC
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SBC.w $0708
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AND.w $070A
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ASL A
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ASL A
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ASL A
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STA.b $06
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LDA.b $22 : CLC : ADC.w #$0008
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LSR A
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LSR A
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LSR A
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STA.b $02
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SEC : SBC.w $070C
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AND.w $070E
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CLC : ADC.b $06
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TAY
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TAX
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LDA.l $7E2000,X
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ASL A
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ASL A
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ASL A
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TAX
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RTS
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}
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#EXIT_0EDEE0:
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SEP #$30
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RTL
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; =========================================================
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SpecialOverworld_CheckForReturnTrigger:
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{
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REP #$31
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JSR GetMap16Tile
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LDA.l Map16Definitions,X : AND.w #$01FF : STA.b $00
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LDX.w #$000C ; Size of table
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.check_next_screen
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LDA.b $00
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.check_next_tile
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DEX
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DEX
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BMI EXIT_0EDEE0
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CMP.l .tile_type, X : BNE .check_next_tile
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LDA.b $8A : CMP.l .screen_id, X : BNE .check_next_screen
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SEP #$30
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LDA.l .direction, X : STA.b $67
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LDX.b #$04
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.keep_shifting
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DEX
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LSR A
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BCC .keep_shifting
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TXA
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STA.w $0418
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LDA.b $67
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LDX.b #$04
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.just_keep_shifting
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DEX
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LSR A
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BCC .just_keep_shifting
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TXA
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STA.w $069C
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LDA.b #$24 : STA.b $11
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STZ.b $B0 : STZ.b $A0
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RTL
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.tile_type
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dw $017C
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dw $01E4
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dw $00AD
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dw $00B9
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dw $01EF
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dw $00B7
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.screen_id
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dw $0080 ; OW 80
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dw $0080 ; OW 80
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dw $0081 ; OW 81
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dw $0081 ; OW 81
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dw $0080 ; OW 91
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dw $0091
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.direction
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dw $0004
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dw $0001
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dw $0004
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dw $0004
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dw $0004
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dw $0004
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}
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pushpc
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OverworldPalettesLoader = $0ED5A8
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org $02E90C ; LoadSpecialOverworld interrupt
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JSL LoadSpecialOverworld
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RTS
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pullpc
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; Table of overworld transition points
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OverworldTransitionPositionY = $02A8C4
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OverworldTransitionPositionX = $02A944
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; Interrupts the vanilla LoadSpecialOverworld function
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; after LoadOverworldFromUnderworld is called.
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; Adds additional data to the table for more special areas
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; Overworld ID $A0 is set to the special area ID
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; To support 0x91, the special area ID will need to index to row 5 of the table
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LoadSpecialOverworld:
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{
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STZ.w $0AA5 ; Clear the custom gfx flag for koroks
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REP #$20
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LDA.b $A0 : CMP.w #$1010 : BNE .not_zora
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LDA.w #$0182 ; OW 82
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STA.b $A0
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.not_zora
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SEP #$20
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PHB : PHK : PLB
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LDA.b $A0
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PHA
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SEC : SBC.b #$80 : STA.b $A0
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; Check if the special area is 0x91
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LDA.b $A0 : CMP.b #$11 : BNE .not_tiny_house
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; Subtract by 5 to index to row 5 of the table
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SEC : SBC.b #$05 : STA.b $A0
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.not_tiny_house
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TAX
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LDA.l .direction, X : STA.b $2F
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STZ.w $0412
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LDA.l .gfx_AA3, X : STA.w $0AA3
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LDA.l .gfx_AA2, X : STA.w $0AA2
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PHX
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LDA.l .palette_prop_b, X : STA.b $00
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LDA.l .palette_prop_a, X : JSL OverworldPalettesLoader
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PLX
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REP #$30
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; Store the size of a big screen in $00 if ID < 5
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LDA.b $A0 : AND.w #$00FF : CMP.w #$0005 : BCC .large_map
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LDA.w #$01F0 : STA.b $00 ; Small map size
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JMP +
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.large_map
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LDA.w #$03F0 : STA.b $00
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+
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; Load overworld ID
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LDA.b $A0 : AND.w #$003F : ASL A : TAX
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; Overworld camera boundaries Y edge
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LDA.l .camera600, X : STA.w $0708
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; X edge
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LDA.l .camera70C, X
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LSR A : LSR A : LSR A
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STA.w $070C
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; Y BG size
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; 0x01F0 on small screens, 0x03F0 on big screens
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LDA.b $00 : STA.w $070A
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; X BG size
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; 0x003E on small screens , 0x007E on big screens
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LDA.b $00
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LSR A : LSR A : LSR A
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STA.w $070E
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; ---------------------------------------------------------
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LDA.b $A0 : ASL A : TAY
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SEP #$10
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LDA.w .camera600, Y : STA.w $0600
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LDA.w .camera602, Y : STA.w $0602
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LDA.w .camera604, Y : STA.w $0604
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LDA.w .camera606, Y : STA.w $0606
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LDA.w .camera610, Y : STA.w $0610
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LDA.w .camera612, Y : STA.w $0612
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LDA.w .camera614, Y : STA.w $0614
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LDA.w .camera616, Y : STA.w $0616
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SEP #$20
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PLA
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STA.b $A0
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PLB
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JSL $0ED61D ; Overworld_SetScreenBGColorCacheOnly
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RTL
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; row 0 - maku tree, left half of small map 80
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; row 1 - tree house, top right quarter of small map 80
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; row 2 - zora falls, large map 81
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; row 3 - also zora falls?
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; row 4 - tree house, top right quarter of small map 80 (mirror)
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; row 5 - tiny house, small map 91 (512x512)
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; Affects $0600 and $0708
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.camera600 ; Camera Scroll Boundary Small North
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dw $0000, $0000, $0000, $0000
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dw $0000, $0000, $0000, $0000
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dw $0200, $0200, $0000, $0000
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dw $0000, $0000, $0000, $0000
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dw $0000, $0000, $0000, $0000
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dw $0400, $0400, $0400, $0400 ; OW 91
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.camera602 ; Camera Scroll Boundary Large North
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dw $0120, $0020, $0320, $0020 ; OW 80
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dw $0000, $0000, $0320, $0320 ; OW 81
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dw $0320, $0220, $0000, $0000 ; OW 82
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dw $0000, $0000, $0320, $0320
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dw $0320, $0220, $0000, $0000 ; OW 81
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dw $051E, $0000, $051E, $051E ; OW 91
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.camera604 ; Camera Scroll Boundary South
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dw $0000, $0100, $0200, $0600
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dw $0600, $0A00, $0C00, $0C00
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dw $0000, $0100, $0200, $0600
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dw $0600, $0A00, $0C00, $0C00
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dw $0000, $0100, $0200, $0600
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dw $0600, $0A00, $0C00, $0C00
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.camera606 ; Camera Scroll Boundary Large South
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dw $0000, $0100, $0500, $0600
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dw $0600, $0A00, $0C00, $0C00
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dw $0000, $0100, $0400, $0600
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dw $0600, $0A00, $0C00, $0C00
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dw $0000, $0100, $0500, $0600
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dw $0300, $0A00, $0C00, $0C00
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.camera610 ; Overworld target position for transition north
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dw $FF20, $FF20, $FF20, $FF20
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dw $FF20, $FF20, $FF20, $FF20
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dw $FF20, $FF20, $0120, $FF20
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dw $FF20, $FF20, $FF20, $0120
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dw $FF20, $FF20, $FF20, $FF20
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dw $0320, $0320, $0320, $0320
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.camera614 ; Overworld target position for transition west
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dw $FFFC, $0100, $0300, $0100
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dw $0500, $0900, $0B00, $0B00
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dw $FFFC, $0100, $0300, $0500
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dw $0500, $0900, $0B00, $0B00
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dw $FFFC, $0100, $0300, $0100
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dw $0100, $0900, $0B00, $0B00
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.camera612 ; Overworld target position for transition south
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dw $FF20, $FF20, $FF20, $FF20
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dw $FF20, $FF20, $0400, $0400
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dw $FF20, $FF20, $0120, $FF20
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dw $FF20, $FF20, $0400, $0400
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dw $FF20, $FF20, $FF20, $FF20
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dw $FF20, $FF20, $0400, $0400
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.camera616 ; Overworld target position for transition east
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dw $0004, $0104, $0300, $0100
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dw $0500, $0900, $0B00, $0B00
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dw $0004, $0104, $0300, $0100
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dw $0500, $0900, $0B00, $0B00
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dw $0004, $0104, $0300, $0100
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dw $0400, $0900, $0B00, $0B00
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.camera70C ; Overworld X Edge
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dw $0000, $0000, $0200, $0600
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dw $0600, $0A00, $0C00, $0C00
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dw $0000, $0000, $0200, $0600
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dw $0600, $0A00, $0C00, $0C00
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dw $0000, $0000, $0200, $0600
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dw $0000, $0000, $0000, $0000
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; ---------------------------------------------------------
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.direction
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db $00, $04, $00, $00
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db $00, $00, $00, $00
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db $00, $00, $00, $00
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db $00, $00, $00, $00
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db $00, $00, $00, $00
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db $00, $00, $00, $00
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.gfx_AA3
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db $0C, $0C, $0E, $0E
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db $0E, $10, $10, $10
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db $0E, $0E, $0E, $0E
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db $10, $10, $10, $10
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db $0E, $0E, $0E, $0E
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db $10, $10, $10, $10
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.gfx_AA2
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db $2F, $2F, $2F, $2F
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db $2F, $2F, $2F, $2F
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db $2F, $2F, $2F, $2F
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db $2F, $2F, $2F, $2F
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db $2F, $2F, $2F, $2F
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db $2F, $2F, $2F, $2F
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.palette_prop_a
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db $0A, $0A, $0A, $0A
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db $02, $02, $02, $0A
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db $02, $02, $0A, $02
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db $02, $02, $02, $0A
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db $02, $02, $02, $0A
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db $02, $02, $02, $0A
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.palette_prop_b
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db $01, $08, $08, $08
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db $00, $00, $00, $00
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db $00, $00, $08, $00
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db $00, $00, $00, $02
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db $00, $00, $00, $00
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db $00, $00, $00, $00
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} |