247 lines
3.1 KiB
NASM
247 lines
3.1 KiB
NASM
; $CA has room_id
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DrawDungeonMapRoom:
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PHB : PHK : PLB ; need to keep this in same bank as data, or else specify bank
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LDA.b $0A : PHA
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LDA.l ShowRooms_default
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AND.w #$00FF
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STA.b $0A
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PHX
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LDX.w DungeonID
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LDA.l MapField
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AND.l DungeonMask, X
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LDA.l ShowRooms_have_map
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AND.w #$00FF
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CMP.b $0A
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BCC +
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STA.b $0A
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+
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LDX.w DungeonID
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LDA.l CompassField
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AND.l DungeonMask, X
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LDA.l ShowRooms_have_compass
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AND.w #$00FF
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CMP.b $0A
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BCC +
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STA.b $0A
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+
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LDA.b $0E
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AND.w #$000F
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BEQ +
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LDA.l ShowRooms_visited_tile
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AND.w #$00FF
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CMP.b $0A
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BCC +
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STA.b $0A
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+
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LDA.b $0A : BNE + : LDA.w #$0F00 : BRA ++
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+ DEC A : BNE + : LDA.w #$174F : BRA ++
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+ DEC A : BNE + : LDA.w #$174F : BRA ++
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+ DEC A : BNE + : LDA.w #$1400 : BRA ++
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+ DEC A : BNE + : LDA.w #$1000 : BRA ++
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+ DEC A : BNE + : LDA.w #$0C00 : BRA ++
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+ LDA.w #$0800
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++ STA.b $0C
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PLX
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LDA.b $CA
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AND.w #$00FF
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ASL A : ASL A
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TAY
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macro DrawQuadrant(quadrant, writeOffset)
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?DrawQuadrant:
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LDA.w SupertileRoomShapes+<quadrant>, Y
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AND.w #$00FF
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CMP.w #$00FF : BEQ ?.empty
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CLC : ADC.w #$0340
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PHA
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LDA.b $0E
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AND.w #1<<(3-<quadrant>)
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BNE ?.visited
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?.unvisited
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LDA.b $0A
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CMP.w #$0003
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BCS ?.shape
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?.square
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PLA
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LDA.b $0C
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BRA ?.write
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?.shape
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PLA
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ORA.b $0C
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BRA ?.write
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?.visited
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PLA
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ORA.w #$0800
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BRA ?.write
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?.empty
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LDA.b $0A
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CMP.w #$0001
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BEQ ?.full_square
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LDA.w #$0F00
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BRA ?.write
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?.full_square
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LDA.w #$174F
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?.write
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ORA.w #(3-<quadrant>)<<14
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STA.l $7F0000+<writeOffset>, X
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?.done
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endmacro
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%DrawQuadrant(0, $00)
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%DrawQuadrant(1, $02)
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%DrawQuadrant(2, $40)
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%DrawQuadrant(3, $42)
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.done
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PLA : STA.b $0A
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PLB
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RTL
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DrawEntrances:
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REP #$30
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PHX : PHY
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LDA.b $06 : PHA
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LDX.w DungeonID
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LDA.l DungeonMapRoomPointers, X
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STA.b $0C
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SEP #$20
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LDA.l DungeonMapFloorCountData, X
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AND.b #$0F
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CLC : ADC.w $020E
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DEC A
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REP #$20
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AND.w #$00FF
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JSR DrawBothFloorsEntrances
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.done
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REP #$20
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PLA : STA.b $06
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PLY : PLX
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SEP #$30
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RTL
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DrawBothFloorsEntrances:
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ASL A
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TAX
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LDA.l DungeonMapFloorToDataOffset, X
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TAY
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STZ.b $06
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.next_room
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REP #$20
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LDA.b ($0C), Y ; get room id
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AND.w #$00FF
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CMP.w #$000F ; $0F = empty room
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BEQ +
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JSR DrawSingleRoomEntrances
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+
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INY
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SEP #$20
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INC.b $06
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LDA.b $06
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CMP.b #$05
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BCC .next_room
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STZ.b $06
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- INC.b $07
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LDA.b $07
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CMP.b #$0A
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BCC .next_room
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.done
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RTS
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macro DrawSingleEntrance(offset)
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LDX.b $00
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STZ.w OAMBufferAux, X ; high x-bit and size bit
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TXA
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ASL #2
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TAX
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LDA.b $06
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ASL #4
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CLC : ADC.b #$90+<offset>
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STA.w OAMBuffer+0, X
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LDA.b $07
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ASL #4
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CMP.b #$50
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BCC ?+
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CLC : ADC.b #$50
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?+ CLC : ADC.b #$87
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CLC : ADC.w $0213
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SEC : SBC.b $E8
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STA.w OAMBuffer+1, X
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LDA.b #$33
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STA.w OAMBuffer+2, X
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LDA.b #$23
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STA.w OAMBuffer+3, X
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INC.b $00
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endmacro
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DrawSingleRoomEntrances:
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STA.b $0E
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SEP #$10
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LDX.b #$FE
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.next_entry
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INX : INX
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LDA.l SupertileEntrances, X
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BPL +
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JMP .done
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+
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AND.w #$0FFF
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CMP.b $0E
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BNE .next_entry
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SEP #$20
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LDA.l SupertileEntrances+1, X
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PHA : PHA
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BIT.b #$40
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BEQ +
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%DrawSingleEntrance(0)
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+
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PLA
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BIT.b #$20
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BEQ +
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%DrawSingleEntrance(4)
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+
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PLA
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BIT.b #$10
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BEQ +
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%DrawSingleEntrance(8)
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+
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.done
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REP #$30
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RTS
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