Revise code for starting In Single entrance caves
No longer hardcoded to only work for link's house.
This commit is contained in:
Kevin Cathcart
@@ -39,39 +39,50 @@ JML.l Overworld_Entrance_BRANCH_RHO
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AllowStartFromSingleEntranceCave:
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; 16 Bit A, 16 bit XY
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; do not need to preserve A or X or Y
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LDA $7EF3C8 : AND.w #$00FF ; What we wrote over
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BEQ +
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BRL .done
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+
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PHA
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LDA #$0016 : STA $7EC142 ; Cache the main screen designation
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LDA $02DCF3 : STA $7EC144 ; Cache BG1 V scroll
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LDA $02DD91 : STA $7EC146 ; Cache BG1 H scroll
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LDA $02DE2F : !ADD.w #$0010 : STA $7EC148 ; Cache Link's Y coordinate
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LDA $02DECD : STA $7EC14A ; Cache Link's X coordinate
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LDA $02DF6B : STA $7EC150 ; Cache Camera Y coord lower bound.
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LDA $02E009 : STA $7EC152 ; Cache Camera X coord lower bound.
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LDA $02DC55 : STA $7EC14E ; Cache Link VRAM Location
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LDA $7EF3C8 : AND.w #$00FF ; What we wrote over
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PHA
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TAX
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; Handle the 2 "unknown" bytes, which control what area of the backgound
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; relative to the camera gets loaded with new tile data as the player moves around
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; (because some overworld areas like Kak are too big for a single VRAM tilemap)
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LDA.l $02E06A : AND.w #$00FF
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BIT.w #$0080 : BEQ + : ORA #$FF00 : + ; Sign extend
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STA.l $7EC16A
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LDA.l StartingAreaExitOffset, X
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LDA.l $02E0B9 : AND.w #$00FF
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BIT.w #$0080 : BEQ + : ORA #$FF00 : + ; Sign extend
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STA.l $7EC16E
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BNE +
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BRL .done
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+
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LDA.w #$0000 : !SUB.l $7EC16A : STA $7EC16C
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LDA.w #$0000 : !SUB.l $7EC16E : STA $7EC170
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DEC
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STA $00
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LSR #2 : !ADD $00 : LSR #2 ; mult by 20
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TAX
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LDA $02DBC9 : AND.w #$00FF
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STA $7EC14C ; Cache the overworld area number
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STA $7EC140 ; Cache the aux overworld area number
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PLA
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.done
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LDA #$0016 : STA $7EC142 ; Cache the main screen designation
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LDA.l StartingAreaExitTable+$05, X : STA $7EC144 ; Cache BG1 V scroll
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LDA.l StartingAreaExitTable+$07, X : STA $7EC146 ; Cache BG1 H scroll
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LDA.l StartingAreaExitTable+$09, X : !ADD.w #$0010 : STA $7EC148 ; Cache Link's Y coordinate
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LDA.l StartingAreaExitTable+$0B, X : STA $7EC14A ; Cache Link's X coordinate
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LDA.l StartingAreaExitTable+$0D, X : STA $7EC150 ; Cache Camera Y coord lower bound.
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LDA.l StartingAreaExitTable+$0F, X : STA $7EC152 ; Cache Camera X coord lower bound.
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LDA.l StartingAreaExitTable+$03, X : STA $7EC14E ; Cache Link VRAM Location
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; Handle the 2 "unknown" bytes, which control what area of the backgound
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; relative to the camera? gets loaded with new tile data as the player moves around
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; (because some overworld areas like Kak are too big for a single VRAM tilemap)
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LDA.l StartingAreaExitTable+$11, X : AND.w #$00FF
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BIT.w #$0080 : BEQ + : ORA #$FF00 : + ; Sign extend
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STA.l $7EC16A
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LDA.l StartingAreaExitTable+$12, X : AND.w #$00FF
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BIT.w #$0080 : BEQ + : ORA #$FF00 : + ; Sign extend
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STA.l $7EC16E
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LDA.w #$0000 : !SUB.l $7EC16A : STA $7EC16C
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LDA.w #$0000 : !SUB.l $7EC16E : STA $7EC170
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LDA.l StartingAreaExitTable+$02, X : AND.w #$00FF
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STA $7EC14C ; Cache the overworld area number
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STA $7EC140 ; Cache the aux overworld area number
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.done
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PLA
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RTL
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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30
tables.asm
30
tables.asm
@@ -905,8 +905,36 @@ db $00, $01, $02, $03, $04
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; $308220 (0x180220) - $30823F (0x18023F)
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; Plandomizer Author Name (ASCII) - Leave unused chars as 0
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org $308220 ; PC 0x180220
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;================================================================================
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; $308240 (0x180420) - $308246 (0x180246)
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; For starting areas in single entrance caves, we specify which row in the StartingAreaExitTable
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; to use for exit information. Values are 1 based indexes, with 0 representing a multi-entrance cave
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; start position.
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; Position 0: Link's House
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; Position 1: sanctuary
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; Position 2: Zelda's cell
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; Position 3: Wounded Uncle
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; Position 4: Mantle
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; Position 5: Middle of Old Man Cave
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; Position 6: Old Man's House
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org $308240 ; PC 0x180240
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StartingAreaExitOffset:
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db $00, $00, $00, $00, $00, $00, $00
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;--------------------------------------------------------------------------------
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; 0x180240 - 0x1814FF (unused)
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; 0x180246 - 0x18024F (unused)
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;-------------------------------------------------------------------------------
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; $308250 (0x180250) - $30829F (0x18029F)
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org $308250 ; PC 0x180250
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StartingAreaExitTable:
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; This has the same format as the main Exit table, except
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; is stored row major instead of column major
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; it lacks the last two columns and has 1 padding byte per row (the last byte)
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dw $0112 : db $53 : dw $001e, $0400, $06e2, $0446, $0758, $046d, $075f : db $00, $00, $00
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dw $0000 : db $00 : dw $0000, $0000, $0000, $0000, $0000, $0000, $0000 : db $00, $00, $00
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dw $0000 : db $00 : dw $0000, $0000, $0000, $0000, $0000, $0000, $0000 : db $00, $00, $00
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dw $0000 : db $00 : dw $0000, $0000, $0000, $0000, $0000, $0000, $0000 : db $00, $00, $00
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;================================================================================
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; 0x1802A0 - 0x1814FF (unused)
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;================================================================================
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; $309500 (0x181500) - $309FFF (0x181FFF) original 0x39C bytes
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; Replacement Ending Sequence Text Data
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