mirror of
https://github.com/lscharen/iigs-game-engine.git
synced 2024-11-17 08:05:15 +00:00
339 lines
7.9 KiB
ArmAsm
339 lines
7.9 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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mx %00
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TSZelda EXT ; tileset buffer
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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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DTile equ 14
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Tmp2 equ 16
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ScreenWidth equ 18
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ScreenHeight equ 20
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SpriteFlags equ 22
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frameCount equ 24
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OldOneSecondCounter equ 26
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SpriteAddr equ 28
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RenderMode equ 30
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; Control modes
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DefaultMode equ RENDER_WITH_SHADOWING
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SlowSprites equ 0
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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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tdc
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sta MyDirectPage ; Keep a copy for the overlay callback
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_MTStartUp ; GTE requires the miscellaneous toolset to be running
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lda #ENGINE_MODE_USER_TOOL
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jsr GTEStartUp ; Load and install the GTE User Tool
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; Init local variables
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stz frameCount
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; Initialize the graphics screen to a 256x160 playfield
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pea #160
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pea #200
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_GTESetScreenMode
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; Load a tileset
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pea 0
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pea 360
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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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pea $0000
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pea #^palette
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pea #palette
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_GTESetPalette
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jsr SetLimits
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pha
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_GTEGetSeconds
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pla
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sta OldOneSecondCounter
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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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pha
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pha
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pea liteBlitter
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_GTEGetAddress
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pla
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plx
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; Set the screen coordinates
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lda #0
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sta ScreenX
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lda #0
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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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jsr HandleKeys ; Do the generic key handlers
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bcs :do_more
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bra :evt_loop
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:do_more
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and #$007F
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cmp #'a'
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bne :not_a
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dec ScreenX
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:not_a cmp #'s'
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bne :not_s
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inc ScreenX
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:not_s
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:do_render jsr :next_frame
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brl :evt_loop
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:next_frame
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pei ScreenX
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pei ScreenY
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_GTESetBG0Origin
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pea $FFFE
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_GTERender
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; Update the performance counters
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inc frameCount
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pha
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_GTEGetSeconds
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pla
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cmp OldOneSecondCounter
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beq :noudt
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sta OldOneSecondCounter
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jsr UdtOverlay
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stz frameCount
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:noudt
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rts
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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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; Called by StartUp function callbacks when the screen size changes
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SetLimits
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pha ; Allocate space for x, y, width, height
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pha
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pha
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pha
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_GTEGetScreenInfo
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pla
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pla ; Discard screen corner
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pla
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sec
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sbc #8
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sta ScreenWidth ; Pre-adjust to keep sprites on the visible playfield (for compiled sprites)
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pla
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sec
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sbc #16
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sta ScreenHeight
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rts
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_fillTileStore
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sta Tmp2
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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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ldx Tmp1
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ldy Tmp0
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jsr _drawTree
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lda Tmp1
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clc
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adc #2
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sta Tmp1
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cmp #40
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bcc :iloop
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lda Tmp0
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clc
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adc #2
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sta Tmp0
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cmp #25
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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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MyDirectPage ds 2
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MyUserId ds 2
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palette dw $0000,$08C1,$0C41,$0F93,$0777,$0FDA,$00A0,$0000,$0D20,$0FFF,$0FD7,$0F59,$0000,$01CE,$0EDA,$0EEE
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PUT ../kfest-2022/StartUp.s
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PUT ../shell/Overlay.s
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; PUT App.Msg.s
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; PUT font.s
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