mirror of
https://github.com/lscharen/iigs-game-engine.git
synced 2024-10-10 18:23:36 +00:00
896 lines
30 KiB
ArmAsm
896 lines
30 KiB
ArmAsm
; Test driver to exercise graphics routines.
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REL
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DSK MAINSEG
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use EDS.GSOS.MACS.s
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put ./GTE.s
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mx %00
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; External references
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tiledata ext
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; Feature flags
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NO_INTERRUPTS equ 1 ; turn off for crossrunner debugging
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NO_MUSIC equ 1 ; turn music + tool loading off
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; Typical init
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phk
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plb
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jsl EngineStartUp
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ldx #0
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jsl SetScreenMode
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jsr _InitBG1 ; Initialize the second background
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lda #0
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jsr _ClearBG1Buffer
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; Set up our level data
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jsr BG0SetUp
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jsr BG1SetUp
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; Allocate room to load data
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jsr AllocOneBank2 ; Alloc 64KB for Load/Unpack
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sta BankLoad ; Store "Bank Pointer"
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jsr MovePlayerToOrigin ; Put the player at the beginning of the map
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lda #DIRTY_BIT_BG0_REFRESH ; Redraw all of the tiles on the next Render
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ora #DIRTY_BIT_BG1_REFRESH
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tsb DirtyBits
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jsl Render
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EvtLoop
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jsl ReadControl
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and #$007F ; Ignore the buttons for now
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cmp #'q'
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bne :1
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brl Exit
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:1 cmp #'l'
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bne :1_1
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jsr DoLoadFG
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bra EvtLoop
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:1_1 cmp #'b'
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bne :2
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jsr DoLoadBG1
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bra EvtLoop
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:2 cmp #'m'
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bne :3
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jsr DumpBanks
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bra EvtLoop
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:3 cmp #'f' ; render a 'f'rame
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bne :4
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jsl Render
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bra EvtLoop
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:4 cmp #'h' ; Show the 'h'eads up display
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bne :5
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jsr DoHUP
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bra EvtLoop
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:5 cmp #'1' ; User selects a new screen size
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bcc :6
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cmp #'9'+1
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bcs :6
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sec
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sbc #'1'
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tax
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jsr SetScreenMode
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jsr MovePlayerToOrigin
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brl EvtLoop
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:6 cmp #'t'
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bne :7
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jsr DoTiles
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brl EvtLoop
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:7 cmp #$15 ; left = $08, right = $15, up = $0B, down = $0A
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bne :8
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lda #1
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jsr MoveRight
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brl EvtLoop
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:8 cmp #$08
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bne :9
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lda #1
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jsr MoveLeft
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brl EvtLoop
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:9 cmp #$0B
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bne :10
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lda #1
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jsr MoveUp
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brl EvtLoop
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:10 cmp #$0A
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bne :11
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lda #1
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jsr MoveDown
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brl EvtLoop
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:11 cmp #'d'
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bne :12
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lda #1
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jsr Demo
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brl EvtLoop
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:12 cmp #'z'
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bne :13
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jsr AngleUp
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brl EvtLoop
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:13 cmp #'x'
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bne :14
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jsr AngleDown
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brl EvtLoop
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:14 brl EvtLoop
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; Exit code
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Exit
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jsl EngineShutDown
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_QuitGS qtRec
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bcs Fatal
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Fatal brk $00
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StartMusic
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pea #^MusicFile
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pea #MusicFile
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_NTPLoadOneMusic
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pea $0001 ; loop
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_NTPPlayMusic
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rts
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; Position the screen with the botom-left corner of the tilemap visible
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MovePlayerToOrigin
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lda #0 ; Set the player's position
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jsr SetBG0XPos
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lda #0
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jsr SetBG1XPos
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lda TileMapHeight
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asl
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asl
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asl
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sec
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sbc ScreenHeight
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pha
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jsr SetBG0YPos
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pla
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jsr SetBG1YPos
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rts
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ClearBankLoad
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lda BankLoad
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phb
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pha
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plb
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ldx #$FFFE
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:lp sta: $0000,x
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dex
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dex
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cpx #0
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bne :lp
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plb
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plb
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rts
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SecondsStr str 'SECONDS'
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TicksStr str 'TICKS'
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; Print a bunch of messages on screen
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DoHUP
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lda #SecondsStr
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ldx #{160-12*4}
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ldy #$7777
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jsr DrawString
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lda OneSecondCounter ; Number of elapsed seconds
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ldx #{160-4*4} ; Render the word 4 charaters from right edge
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jsr DrawWord
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lda #TicksStr
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ldx #{8*160+160-12*4}
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ldy #$7777
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jsr DrawString
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PushLong #0
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_GetTick
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pla
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plx
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ldx #{8*160+160-4*4}
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jsr DrawWord
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rts
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; Fill up the virtual buffer with tile data
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DoTiles
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:row equ 1
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:column equ 3
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:tile equ 5
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pea $0000 ; Allocate local variable space
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pea $0000
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pea $0000
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:rowloop
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lda #0
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sta :column,s
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lda #$0010
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sta :tile,s
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:colloop
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lda :row,s
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tay
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lda :column,s
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tax
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lda :tile,s
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jsr CopyTile
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lda :column,s
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inc
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sta :column,s
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cmp #41
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bcc :colloop
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lda :row,s
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inc
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sta :row,s
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cmp #26
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bcc :rowloop
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pla ; restore the stack
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pla
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pla
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rts
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; Load a binary file in the BG1 buffer
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DoLoadBG1
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lda BankLoad
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ldx #BG1DataFile
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jsr LoadFile
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ldx BankLoad
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lda #0
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ldy BG1DataBank
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jsr CopyBinToBG1
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lda BankLoad
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ldx #BG1AltDataFile
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jsr LoadFile
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ldx BankLoad
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lda #0
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ldy BG1AltBank
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jsr CopyBinToBG1
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rts
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; Load a raw pixture into the code buffer
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DoLoadFG
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lda BankLoad
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ldx #FGName
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jsr LoadFile
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ldx BankLoad ; Copy it into the code field
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lda #0
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jsr CopyBinToField
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rts
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; Load a simple picture format onto the SHR screen
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DoLoadPic
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lda BankLoad
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ldx #ImageName ; Load+Unpack Boot Picture
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jsr LoadPicture ; X=Name, A=Bank to use for loading
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ldx BankLoad ; Copy it into the code field
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lda #0
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jsr CopyPicToField
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rts
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; Copy a raw data file into the code field
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;
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; A=low word of picture address
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; X=high word of pixture address
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CopyBinToField
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:srcptr equ tmp0
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:line_cnt equ tmp2
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:dstptr equ tmp3
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:col_cnt equ tmp5
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:mask equ tmp6
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:data equ tmp7
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:mask_color equ tmp8
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sta :srcptr
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stx :srcptr+2
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; Check that this is a GTERAW image and save the transparent color
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ldy #4
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:chkloop
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lda [:srcptr],y
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cmp :headerStr,y
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beq *+3
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rts
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dey
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dey
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bpl :chkloop
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; We have a valid header, now get the transparency word and load it in
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ldy #6
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lda [:srcptr],y
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sta :mask_color
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; Advance over the header
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lda :srcptr
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clc
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adc #8
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sta :srcptr
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stz :line_cnt
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:rloop
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lda :line_cnt ; get the pointer to the code field line
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asl
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tax
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lda BTableLow,x
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sta :dstptr
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lda BTableHigh,x
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sta :dstptr+2
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; ldx #162 ; move backwards in the code field
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ldy #0 ; move forward in the image data
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lda #82 ; keep a running column count
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sta :col_cnt
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:cloop
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phy
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lda [:srcptr],y ; load the picture data
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cmp :mask_color
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beq :transparent ; a value of $0000 is transparent
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jsr :toMask ; Infer a mask value for this. If it's $0000, then
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cmp #$0000
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bne :mixed ; the data is solid, otherwise mixed
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; This is a solid word
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:solid
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lda [:srcptr],y
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pha ; Save the data
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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tay
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lda #$00F4 ; PEA instruction
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sta [:dstptr],y
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iny
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pla
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sta [:dstptr],y ; PEA operand
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bra :next
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:transparent
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lda :mask_color ; Make sure we actually have to mask
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cmp #$A5A5
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beq :solid
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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tay
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lda #$B1 ; LDA (dp),y
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sta [:dstptr],y
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iny
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lda 1,s ; load the saved Y-index
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ora #$4800 ; put a PHA after the offset
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sta [:dstptr],y
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bra :next
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:mixed
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sta :mask ; Save the mask
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lda [:srcptr],y ; Refetch the screen data
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sta :data
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tyx
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lda Col2CodeOffset,y ; Get the offset into the code field
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tay
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lda #$4C ; JMP exception
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sta [:dstptr],y
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iny
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lda JTableOffset,x ; Get the address offset and add to the base address
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clc
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adc :dstptr
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sta [:dstptr],y
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ldy JTableOffset,x ; This points to the code fragment
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lda 1,s ; load the offset
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xba
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ora #$00B1
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sta [:dstptr],y ; write the LDA (--),y instruction
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iny
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iny
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iny ; advance to the AND #imm operand
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lda :mask
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sta [:dstptr],y
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iny
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iny
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iny ; advance to the ORA #imm operand
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lda :mask
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eor #$FFFF ; invert the mask to clear up the data
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and :data
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sta [:dstptr],y
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:next
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ply
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; dex
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; dex
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iny
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iny
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dec :col_cnt
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bne :cloop
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lda :srcptr
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clc
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adc #164
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sta :srcptr
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inc :line_cnt
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lda :line_cnt
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cmp #200
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bcs :exit
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brl :rloop
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:exit
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rts
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:toMask pha ; save original
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lda 1,s
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eor :mask_color ; only identical bits produce zero
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and #$F000
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beq *+7
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pea #$0000
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bra *+5
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pea #$F000
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lda 3,s
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eor :mask_color
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and #$0F00
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beq *+7
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pea #$0000
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bra *+5
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pea #$0F00
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lda 5,s
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eor :mask_color
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and #$00F0
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beq *+7
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pea #$0000
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bra *+5
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pea #$00F0
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lda 7,s
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eor :mask_color
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and #$000F
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beq *+7
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lda #$0000
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bra *+5
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lda #$000F
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ora 1,s
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sta 1,s
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pla
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ora 1,s
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sta 1,s
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pla
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ora 1,s
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sta 1,s
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pla
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sta 1,s ; pop the saved word
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pla
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rts
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:headerStr asc 'GTERAW'
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; Copy a loaded SHR picture into the code field
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;
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; A=low word of picture address
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; X=high workd of pixture address
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;
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; Picture must be within one bank
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CopyPicToField
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:srcptr equ tmp0
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:line_cnt equ tmp2
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:dstptr equ tmp3
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:col_cnt equ tmp5
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:mask equ tmp6
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:data equ tmp7
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sta :srcptr
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stx :srcptr+2
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stz :line_cnt
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:rloop
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lda :line_cnt ; get the pointer to the code field line
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asl
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tax
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lda BTableLow,x
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sta :dstptr
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lda BTableHigh,x
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sta :dstptr+2
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; ldx #162 ; move backwards in the code field
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ldy #0 ; move forward in the image data
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lda #80 ; keep a running column count
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; lda #82 ; keep a running column count
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sta :col_cnt
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:cloop
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phy
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lda [:srcptr],y ; load the picture data
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beq :transparent ; a value of $0000 is transparent
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jsr :toMask ; Infer a mask value for this. If it's $0000, then
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bne :mixed ; the data is solid, otherwise mixed
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; This is a solid word
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lda [:srcptr],y
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pha ; Save the data
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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tay
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lda #$00F4 ; PEA instruction
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sta [:dstptr],y
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iny
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pla
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sta [:dstptr],y ; PEA operand
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bra :next
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:transparent
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lda Col2CodeOffset,y ; Get the offset to the code from the line start
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tay
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lda #$B1 ; LDA (dp),y
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sta [:dstptr],y
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iny
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lda 1,s ; load the saved Y-index
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ora #$4800 ; put a PHA after the offset
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sta [:dstptr],y
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bra :next
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:mixed
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sta :mask ; Save the mask
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lda [:srcptr],y ; Refetch the screen data
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sta :data
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tyx
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lda Col2CodeOffset,y ; Get the offset into the code field
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tay
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lda #$4C ; JMP exception
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sta [:dstptr],y
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iny
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lda JTableOffset,x ; Get the address offset and add to the base address
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clc
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adc :dstptr
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sta [:dstptr],y
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ldy JTableOffset,x ; This points to the code fragment
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lda 1,s ; load the offset
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xba
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ora #$00B1
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sta [:dstptr],y ; write the LDA (--),y instruction
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iny
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iny
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iny ; advance to the AND #imm operand
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lda :mask
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sta [:dstptr],y
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iny
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iny
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iny ; advance to the ORA #imm operand
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lda :data
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sta [:dstptr],y
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:next
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ply
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; dex
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; dex
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iny
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iny
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dec :col_cnt
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bne :cloop
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lda :srcptr
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clc
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; adc #164
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adc #160
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sta :srcptr
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inc :line_cnt
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lda :line_cnt
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; cmp #208
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cmp #200
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bcs :exit
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brl :rloop
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:exit
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rts
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:toMask bit #$F000
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beq *+7
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and #$0FFF
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bra *+5
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ora #$F000
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bit #$0F00
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beq *+7
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and #$F0FF
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bra *+5
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ora #$0F00
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bit #$00F0
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beq *+7
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and #$FF0F
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bra *+5
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ora #$00F0
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bit #$000F
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beq *+7
|
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and #$FFF0
|
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bra *+5
|
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ora #$000F
|
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rts
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; Copy a binary image data file into BG1. Assumes the file is the correct size.
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;
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; A=low word of picture address
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; X=high word of pixture address
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; Y=high word of BG1 bank
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CopyBinToBG1
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:srcptr equ tmp0
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:line_cnt equ tmp2
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:dstptr equ tmp3
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:col_cnt equ tmp5
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|
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sta :srcptr
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stx :srcptr+2
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sty :dstptr+2 ; Everything goes into this bank
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; Advance over the header
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lda :srcptr
|
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clc
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adc #8
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sta :srcptr
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stz :line_cnt
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:rloop
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lda :line_cnt ; get the pointer to the code field line
|
|
asl
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tax
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|
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lda BG1YTable,x
|
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sta :dstptr
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ldy #0 ; move forward in the image data and image data
|
|
:cloop
|
|
lda [:srcptr],y
|
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sta [:dstptr],y
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|
iny
|
|
iny
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|
|
cpy #164
|
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bcc :cloop
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|
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lda [:srcptr] ; Duplicate the last byte in the extra space at the end of the line
|
|
sta [:dstptr],y
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lda :srcptr
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|
clc
|
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adc #164 ; Each line is 328 pixels
|
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sta :srcptr
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|
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inc :line_cnt
|
|
lda :line_cnt
|
|
cmp #208 ; A total of 208 lines
|
|
bcc :rloop
|
|
rts
|
|
|
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;DefaultPalette dw $0000,$007F,$0090,$0FF0
|
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; dw $000F,$0080,$0f70,$0FFF
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dw $0fa9,$0ff0,$00e0,$04DF
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dw $0d00,$078f,$0ccc,$0FFF
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|
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; DefaultPalette dw $09BE,$0AA6,$0DC9,$0DB7,$09AA
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dw $0080,$0f70,$0FFF
|
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dw $0fa9,$0ff0,$00e0,$04DF
|
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dw $0d00,$078f,$0ccc,$0FFF
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|
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; Super Mario World Assets
|
|
;DefaultPalette dw $0EEF,$0342,$0C95,$0852,$0DB4,$00C0
|
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dw $0FDA,$0DEE,$0000,$0CC5,$09A0,$0680,$0470,$0051
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|
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;DefaultPalette dw $0000,$0000,$0778,$0BCC,$0368,$00AF,$0556,$0245
|
|
dw $0000,$0778,$0AAA,$0CFF,$0368,$00AF,$0556
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|
|
; Woz
|
|
;DefaultPalette dw $0EEF,$0342,$0C95,$0852,$0DB4,$00C0
|
|
dw $0666,$0999,$0CCC,$0222,$09A0,$0680,$0470,$0051
|
|
|
|
; Fatdog color cycling
|
|
;DefaultPalette dw $0EEF,$0342,$0C95,$0852,$0DB4,$00C0
|
|
dw $0156,$0288,$03A8,$07B8,$0034,$0013,$0470,$0051
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|
|
|
; Plant
|
|
;DefaultPalette dw $0EEF,$0342,$0C95,$0852,$0DB4,$00C0
|
|
dw $0222,$0333,$0444,$0888,$09A0,$0680,$0470,$0051
|
|
|
|
; SMB
|
|
DefaultPalette dw $0E51,$0EDB,$0000,$068F,$0BF1,$00A0,$0EEE,$0777,$0FA4,$0F59,$0E05,$0F30
|
|
dw $0680,$0470,$0051
|
|
|
|
; Graphics helpers
|
|
|
|
LoadPicture
|
|
jsr LoadFile ; X=Nom Image, A=Banc de chargement XX/00
|
|
bcc :loadOK
|
|
rts
|
|
:loadOK
|
|
jsr UnpackPicture ; A=Packed Size
|
|
rts
|
|
|
|
|
|
UnpackPicture sta UP_PackedSize ; Size of Packed Data
|
|
lda #$8000 ; Size of output Data Buffer
|
|
sta UP_UnPackedSize
|
|
lda BankLoad ; Banc de chargement / Decompression
|
|
sta UP_Packed+1 ; Packed Data
|
|
clc
|
|
adc #$0080
|
|
stz UP_UnPacked ; On remet a zero car modifie par l'appel
|
|
stz UP_UnPacked+2
|
|
sta UP_UnPacked+1 ; Unpacked Data buffer
|
|
|
|
PushWord #0 ; Space for Result : Number of bytes unpacked
|
|
PushLong UP_Packed ; Pointer to buffer containing the packed data
|
|
PushWord UP_PackedSize ; Size of the Packed Data
|
|
PushLong #UP_UnPacked ; Pointer to Pointer to unpacked buffer
|
|
PushLong #UP_UnPackedSize ; Pointer to a Word containing size of unpacked data
|
|
_UnPackBytes
|
|
pla ; Number of byte unpacked
|
|
rts
|
|
|
|
UP_Packed hex 00000000 ; Address of Packed Data
|
|
UP_PackedSize hex 0000 ; Size of Packed Data
|
|
UP_UnPacked hex 00000000 ; Address of Unpacked Data Buffer (modified)
|
|
UP_UnPackedSize hex 0000 ; Size of Unpacked Data Buffer (modified)
|
|
|
|
; Basic I/O function to load files
|
|
|
|
LoadFile
|
|
stx openRec+4 ; X=File, A=Bank (high word) assumed zero for low
|
|
stz readRec+4
|
|
sta readRec+6
|
|
jsr ClearBankLoad
|
|
|
|
:openFile _OpenGS openRec
|
|
bcs :openReadErr
|
|
lda openRec+2
|
|
sta eofRec+2
|
|
sta readRec+2
|
|
|
|
_GetEOFGS eofRec
|
|
lda eofRec+4
|
|
sta readRec+8
|
|
lda eofRec+6
|
|
sta readRec+10
|
|
|
|
_ReadGS readRec
|
|
bcs :openReadErr
|
|
|
|
:closeFile _CloseGS closeRec
|
|
clc
|
|
lda eofRec+4 ; File Size
|
|
rts
|
|
|
|
:openReadErr jsr :closeFile
|
|
nop
|
|
nop
|
|
|
|
PushWord #0
|
|
PushLong #msgLine1
|
|
PushLong #msgLine2
|
|
PushLong #msgLine3
|
|
PushLong #msgLine4
|
|
_TLTextMountVolume
|
|
pla
|
|
cmp #1
|
|
bne :loadFileErr
|
|
brl :openFile
|
|
:loadFileErr sec
|
|
rts
|
|
|
|
msgLine1 str 'Unable to load File'
|
|
msgLine2 str 'Press a key :'
|
|
msgLine3 str ' -> Return to Try Again'
|
|
msgLine4 str ' -> Esc to Quit'
|
|
|
|
; Data storage
|
|
MusicFile str '1/main.ntp'
|
|
BG1DataFile strl '1/bg1a.bin'
|
|
BG1AltDataFile strl '1/bg1b.bin'
|
|
|
|
ImageName strl '1/test.pic'
|
|
FGName strl '1/fg1.bin'
|
|
;MasterId ds 2
|
|
;UserId ds 2
|
|
|
|
openRec dw 2 ; pCount
|
|
ds 2 ; refNum
|
|
adrl FGName ; pathname
|
|
|
|
eofRec dw 2 ; pCount
|
|
ds 2 ; refNum
|
|
ds 4 ; eof
|
|
|
|
readRec dw 4 ; pCount
|
|
ds 2 ; refNum
|
|
ds 4 ; dataBuffer
|
|
ds 4 ; requestCount
|
|
ds 4 ; transferCount
|
|
|
|
closeRec dw 1 ; pCount
|
|
ds 2 ; refNum
|
|
|
|
qtRec adrl $0000
|
|
da $00
|
|
|
|
PUT App.TileMapBG0.s
|
|
PUT App.TileMapBG1.s
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|