mirror of
https://github.com/lscharen/iigs-game-engine.git
synced 2024-11-23 03:33:11 +00:00
613 lines
15 KiB
ArmAsm
613 lines
15 KiB
ArmAsm
REL
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DSK MAINSEG
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use Locator.Macs
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use Load.Macs
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use Mem.Macs
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use Misc.Macs
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use Util.Macs
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use EDS.GSOS.Macs
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use GTE.Macs
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use ../../src/Defs.s
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mx %00
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TSZelda EXT ; tileset buffer
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MAX_SPRITES equ 16
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ScreenX equ 0
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ScreenY equ 2
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Tmp0 equ 4
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Tmp1 equ 6
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KeyState equ 8
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Selected equ 10
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Flips equ 12
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; Typical init
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phk
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plb
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sta MyUserId ; GS/OS passes the memory manager user ID for the application into the program
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_MTStartUp ; GTE requires the miscellaneous toolset to be running
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jsr GTEStartUp ; Load and install the GTE User Tool
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; Initialize the graphics screen to a 256x160 playfield
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pea #256
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pea #160
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_GTESetScreenMode
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; Load a tileset
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pea #^TSZelda
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pea #TSZelda
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_GTELoadTileSet
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; Set the palette
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ldx #11*2
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:ploop
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lda palette,x
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stal $E19E00,x
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dex
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dex
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bpl :ploop
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bra sprt
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palette dw $0000,$08C1,$0C41,$0F93,$0777,$0FDA,$00A0,$0000,$0D20,$0FFF,$023E
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sprt
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; Create stamps for the sprites we are going to use
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HERO_SPRITE equ SPRITE_16X16+1
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pea HERO_SPRITE ; sprint id
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pea VBUFF_SPRITE_START ; vbuff address
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_GTECreateSpriteStamp
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; Create sprites
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stz Tmp0
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stz Tmp1
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ldx Tmp0
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:sloop
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pea HERO_SPRITE ; sprite id
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lda PlayerX,x
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pha
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lda PlayerY,x
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pha
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pei Tmp1
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_GTEAddSprite
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pei Tmp1 ; update the sprite in this slot
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pea $0000 ; with these flags (h/v flip)
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pea VBUFF_SPRITE_START ; and use this stamp
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_GTEUpdateSprite
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inc Tmp1
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ldx Tmp0
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inx
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inx
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stx Tmp0
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cpx #MAX_SPRITES*2
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bcc :sloop
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; Manually fill in the 41x26 tiles of the TileStore with a test pattern of trees
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jsr _fillTileStore
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ldx #0
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ldy #0
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jsr _drawTree
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ldx #3
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ldy #0
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jsr _drawTreeH
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ldx #0
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ldy #3
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jsr _drawTreeV
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ldx #3
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ldy #3
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jsr _drawTreeHV
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ldx #9
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ldy #0
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jsr _drawTree
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ldx #9
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ldy #3
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jsr _drawTree
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ldx #12
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ldy #0
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jsr _drawTree
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ldx #12
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ldy #3
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jsr _drawTree
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ldx #6
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ldy #0
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jsr _drawTreeFront
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ldx #6
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ldy #3
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jsr _drawTreeFront
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ldx #6
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ldy #6
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jsr _drawTreeFront
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ldx #3
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ldy #6
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jsr _drawTreeFront
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ldx #0
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ldy #6
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jsr _drawTreeFront
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; Initialize the frame counter
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stz FrameCount
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; Set the screen coordinates
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lda #128
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sta ScreenX
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lda #128
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sta ScreenY
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stz Selected
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stz Flips
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; Very simple actions
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:evt_loop
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pha ; space for result, with pattern
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_GTEReadControl
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pla
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and #$00FF
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cmp #'q'
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bne :2
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brl :exit
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:2
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; cmp KeyState
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; beq :evt_loop
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; sta KeyState
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; cmp #0
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; beq :evt_loop
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; cmp #' '
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; bne :evt_loop ; only advance one frame at a time
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; brl :next
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:3
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cmp #'1'
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bcc :3a
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cmp #'9'
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bcs :3a
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sec
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sbc #'1'
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asl
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sta Selected
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brl :next
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:3a
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cmp #'r'
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bne :3b
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lda Flips
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clc
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adc #SPRITE_HFLIP
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and #SPRITE_VFLIP+SPRITE_HFLIP
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sta Flips
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pei Selected ; update the sprite in this slot
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pei Flips ; with these flags (h/v flip)
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pea VBUFF_SPRITE_START ; and use this stamp
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_GTEUpdateSprite
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:3b
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cmp #'x'
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bne :3d
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ldx Selected
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lda PlayerX,x
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clc
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adc PlayerU,x
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sta PlayerX,x
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lda PlayerY,x
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clc
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adc PlayerV,x
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sta PlayerY,x
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brl :next
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:3d
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cmp #'z'
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bne :3e
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ldx Selected
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lda PlayerX,x
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sec
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sbc PlayerU,x
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sta PlayerX,x
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lda PlayerY,x
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sec
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sbc PlayerV,x
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sta PlayerY,x
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brl :next
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:3e
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cmp #'s'
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bne :4
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ldx Selected
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inc PlayerY,x
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brl :next
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:4
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cmp #'w'
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bne :5
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ldx Selected
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dec PlayerY,x
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brl :next
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:5
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cmp #'d'
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bne :6
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ldx Selected
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inc PlayerX,x
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brl :next
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:6
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cmp #'a'
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bne :7
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ldx Selected
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dec PlayerX,x
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brl :next
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:7
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cmp #$15 ; left = $08, right = $15, up = $0B, down = $0A
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bne :8
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inc ScreenX
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bra :next
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:8 cmp #$08
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bne :9
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dec ScreenX
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brl :next
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:9 cmp #$0B
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bne :10
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inc ScreenY
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brl :next
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:10 cmp #$0A
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bne :next
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dec ScreenY
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:next
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; inc ScreenX
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pei ScreenX
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pei ScreenY
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_GTESetBG0Origin
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; brl no_animate
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stz Tmp0
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stz Tmp1
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ldx Tmp0
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loopX
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lda PlayerX,x
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clc
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adc PlayerU,x
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sta PlayerX,x
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bpl is_posx
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cmp #-15
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bcs do_y
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lda PlayerU,x
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eor #$FFFF
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inc
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sta PlayerU,x
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bra do_y
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is_posx cmp #128
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bcc do_y
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lda PlayerU,x
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eor #$FFFF
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inc
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sta PlayerU,x
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do_y
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lda PlayerY,x
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clc
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adc PlayerV,x
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sta PlayerY,x
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bpl is_posy
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cmp #-15
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bcs do_z
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lda PlayerV,x
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eor #$FFFF
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inc
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sta PlayerV,x
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bra do_z
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is_posy cmp #160
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bcc do_z
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lda PlayerV,x
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eor #$FFFF
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inc
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sta PlayerV,x
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do_z
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inc Tmp1
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ldx Tmp0
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inx
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inx
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stx Tmp0
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cpx #MAX_SPRITES*2
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bcc loopX
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no_animate
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stz Tmp0
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stz Tmp1
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ldx Tmp0
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loopY
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pei Tmp1
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lda PlayerX,x
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pha
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lda PlayerY,x
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pha
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_GTEMoveSprite
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inc Tmp1
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ldx Tmp0
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inx
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inx
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stx Tmp0
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cpx #MAX_SPRITES*2
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bcc loopY
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_GTERender
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inc FrameCount
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; Debug stuff
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pha
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_GTEGetSeconds
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pla
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cmp LastSecond
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beq :no_fps
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sta LastSecond
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lda FrameCount
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ldx #0
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ldy #$FFFF
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jsr DrawWord
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stz FrameCount
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:no_fps
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; tdc
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; ldx #160*32
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; jsr DrawWord
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brl :evt_loop
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; Shut down everything
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:exit
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_GTEShutDown
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_QuitGS qtRec
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qtRec adrl $0000
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da $00
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; Array of sprite positions and velocities
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PlayerX dw 8,14,29,34,45,67,81,83,92,101,39,22,7,74,111,9
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PlayerY dw 72,24,13,56,35,72,23,8,93,123,134,87,143,14,46,65
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PlayerU dw 1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4
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PlayerV dw 1,1,1,1,2,2,2,4,3,3,3,3,4,4,4,4
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; Load the GTE User Tool and install it
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GTEStartUp
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pea $0000
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_LoaderStatus
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pla
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pea $0000
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pea $0000
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pea $0000
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pea $0000
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pea $0000 ; result space
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lda MyUserId
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pha
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pea #^ToolPath
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pea #ToolPath
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pea $0001 ; do not load into special memory
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_InitialLoad
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bcc :ok1
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brk $01
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:ok1
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ply
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pla ; Address of the loaded tool
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plx
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ply
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ply
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pea $8000 ; User toolset
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pea $00A0 ; Set the tool set number
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phx
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pha ; Address of function pointer table
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_SetTSPtr
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bcc :ok2
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brk $02
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:ok2
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clc ; Give GTE a page of direct page memory
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tdc
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adc #$0100
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pha
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pea $0000 ; No extra capabilities
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lda MyUserId ; Pass the userId for memory allocation
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pha
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_GTEStartUp
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bcc :ok3
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brk $03
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:ok3
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rts
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_fillTileStore
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stz Tmp0
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:oloop
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stz Tmp1
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:iloop
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pei Tmp1
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pei Tmp0
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pea #129
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_GTESetTile
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lda Tmp1
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inc
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sta Tmp1
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cmp #41
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bcc :iloop
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lda Tmp0
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inc
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sta Tmp0
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cmp #26
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bcc :oloop
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rts
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; Tile 65 Tile 66
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; Tile 97 Tile 98
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_drawTreeFront
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phx
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phy
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pea #65+TILE_PRIORITY_BIT
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inx
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phx
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phy
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pea #66+TILE_PRIORITY_BIT
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iny
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phx
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phy
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pea #98+TILE_PRIORITY_BIT
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dex
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phx
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phy
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pea #97+TILE_PRIORITY_BIT
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_GTESetTile
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_GTESetTile
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_GTESetTile
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_GTESetTile
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rts
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_drawTree
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phx
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phy
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pea #65
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inx
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phx
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phy
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pea #66
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iny
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phx
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phy
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pea #98
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dex
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phx
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phy
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pea #97
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_GTESetTile
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_GTESetTile
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_GTESetTile
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_GTESetTile
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rts
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_drawTreeH
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phx
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phy
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pea #66+TILE_HFLIP_BIT
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inx
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phx
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phy
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pea #65+TILE_HFLIP_BIT
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iny
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phx
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phy
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pea #97+TILE_HFLIP_BIT
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dex
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phx
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phy
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pea #98+TILE_HFLIP_BIT
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_GTESetTile
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_GTESetTile
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_GTESetTile
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_GTESetTile
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rts
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_drawTreeV
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phx
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phy
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pea #97+TILE_VFLIP_BIT
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inx
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phx
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phy
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pea #98+TILE_VFLIP_BIT
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iny
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phx
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phy
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pea #66+TILE_VFLIP_BIT
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dex
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phx
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phy
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pea #65+TILE_VFLIP_BIT
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_GTESetTile
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_GTESetTile
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_GTESetTile
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_GTESetTile
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rts
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_drawTreeHV
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phx
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phy
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pea #98+TILE_VFLIP_BIT+TILE_HFLIP_BIT
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inx
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phx
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phy
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pea #97+TILE_VFLIP_BIT+TILE_HFLIP_BIT
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iny
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phx
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phy
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pea #65+TILE_VFLIP_BIT+TILE_HFLIP_BIT
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dex
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phx
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phy
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pea #66+TILE_VFLIP_BIT+TILE_HFLIP_BIT
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_GTESetTile
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_GTESetTile
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_GTESetTile
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_GTESetTile
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rts
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MyUserId ds 2
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ToolPath str '1/Tool160'
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FrameCount ds 2
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LastSecond dw 0
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PUT App.Msg.s
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PUT font.s
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