mirror of
https://github.com/lscharen/iigs-game-engine.git
synced 2024-11-26 07:49:17 +00:00
792 lines
24 KiB
ArmAsm
792 lines
24 KiB
ArmAsm
; Test driver to exercise graphics routines.
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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 Tool222.Macs.s
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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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TSet EXT ; tileset buffer
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; Keycodes
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LEFT_ARROW equ $08
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RIGHT_ARROW equ $15
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UP_ARROW equ $0B
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DOWN_ARROW equ $0A
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; Direct page space
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appTmp0 equ 0
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BankLoad equ 2
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StartX equ 4
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StartY equ 6
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TileMapWidth equ 8
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TileMapHeight equ 10
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ScreenWidth equ 12
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ScreenHeight equ 14
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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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jsr GTEStartUp ; Load and install the GTE User Tool
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; Initialize local variables
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stz appTmp0
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stz BankLoad
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stz StartX
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stz StartY
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; Initialize the graphics screen to a 256x160 playfield
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pea #320
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pea #200
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_GTESetScreenMode
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; Load a tileset
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pea #^TSet
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pea #TSet
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_GTELoadTileSet
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pea $0000
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pea #^MyPalette
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pea #MyPalette
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_GTESetPalette
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; Set up our level data
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jsr BG0SetUp
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jsr TileAnimInit
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jsr SetLimits
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jsr InitOverlay ; Initialize the status bar
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stz frameCount
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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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jsr UdtOverlay
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; Allocate a buffer for loading files
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jsl AllocBank ; Alloc 64KB for Load/Unpack
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sta BankLoad ; Store "Bank Pointer"
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; Load in the 256 color background into BG1 buffer
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; brl :nobackground
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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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lda BankLoad
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pha
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pea $0000
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_GTECopyPicToBG1
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; Copy the palettes into place
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stz appTmp0
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:ploop
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lda appTmp0
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pha ; Palette number
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ldy BankLoad
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phy ; High word pointer to palette
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asl
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asl
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asl
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asl
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asl
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clc
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adc #$7E00
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pha ; Low word pointer to palette
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_GTESetPalette
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inc appTmp0
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lda appTmp0
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cmp #16
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bcc :ploop
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; Bind the SCBs
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lda BankLoad
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ora #$8000 ; set high bit to bind to BG1 Y-position
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pha
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pea $7D00
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_GTEBindSCBArray
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:nobackground
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; Initialize the sprite's global position (this is tracked outside of the tile engine)
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lda #16
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sta PlayerGlobalX
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lda MaxGlobalY
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sec
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lda #40 ; 32 for tiles, 8 for sprite
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sta PlayerGlobalY
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stz PlayerXVel
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stz PlayerYVel
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; Create the sprites
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HERO_ID equ {SPRITE_16X16+145}
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HERO_VBUFF equ VBUFF_SPRITE_START+0*VBUFF_SPRITE_STEP
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HERO_SLOT equ 1
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MUSHROOM_ID equ {SPRITE_16X16+255}
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MUSHROOM_VBUFF equ VBUFF_SPRITE_START+1*VBUFF_SPRITE_STEP
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MUSHROOM_SLOT equ 0
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pea HERO_ID ; sprint id
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pea HERO_VBUFF ; vbuff address
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_GTECreateSpriteStamp
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pea MUSHROOM_ID ; sprint id
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pea MUSHROOM_VBUFF ; vbuff address
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_GTECreateSpriteStamp
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pea MUSHROOM_ID ; Put the mushroom in Slot 0
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pea #80 ; at x=80, y=152
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pea #152
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pea MUSHROOM_SLOT
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_GTEAddSprite
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pea MUSHROOM_SLOT
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pea $0000 ; with these flags (h/v flip)
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pea MUSHROOM_VBUFF ; and use this stamp
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_GTEUpdateSprite
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jsr UpdatePlayerLocal
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pea HERO_ID
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lda PlayerX
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pha
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lda PlayerY
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pha
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pea HERO_SLOT ; Put the player in slot 1
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_GTEAddSprite
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pea HERO_SLOT
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pea $0000
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pea HERO_VBUFF ; and use this stamp
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_GTEUpdateSprite
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; Set up a very specific test. First, we draw a sprite into the sprite plane, and then
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; leave it alone. We are just testing the ability to merge sprite plane data into
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; the play field tiles.
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EvtLoop
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pha
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_GTEReadControl
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; Check the buttons first
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lda 1,s
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bit #$0100
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beq :no_jump
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lda PlayerStanding
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beq :no_jump
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lda #$FFF8
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sta PlayerYVel
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:no_jump
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; Enable/disable v-sync
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lda 1,s
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bit #$0400
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beq :no_key_down
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and #$007F
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cmp #'v'
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bne :not_v
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lda #$0001
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eor vsync
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sta vsync
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:not_v
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cmp #'f'
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bne :not_f
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lda SpriteToggle
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eor #SPRITE_HIDE
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sta SpriteToggle
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bne :not_f
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stz SpriteCount
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:not_f
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:no_key_down
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pla
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and #$007F ; Ignore the buttons for now
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cmp #'q'
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bne :not_q
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brl Exit
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:not_q
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cmp #'d'
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bne :not_d
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lda StartX
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cmp MaxBG0X
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bcc *+5
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brl :do_render
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inc StartX
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pei StartX
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pei StartY
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_GTESetBG0Origin
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brl :do_render
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:not_d
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cmp #'a'
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bne :not_a
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lda StartX
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bne *+5
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brl :do_render
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dec StartX
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pei StartX
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pei StartY
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_GTESetBG0Origin
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brl :do_render
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:not_a
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cmp #'s'
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bne :not_s
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lda StartY
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cmp MaxBG0Y
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bcs :do_render
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inc StartY
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pei StartX
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pei StartY
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_GTESetBG0Origin
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bra :do_render
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:not_s
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cmp #'w'
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bne :not_w
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lda StartY
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beq :do_render
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dec StartY
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pei StartX
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pei StartY
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_GTESetBG0Origin
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bra :do_render
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:not_w
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; Do j,l to move the character left/right
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cmp #'j'
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bne :not_j
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lda PlayerXVel
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bpl :pos_xvel
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cmp #$FFFA
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bcc :not_j
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:pos_xvel dec
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dec
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sta PlayerXVel
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bra :do_render
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:not_j
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cmp #'l'
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bne :not_l
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lda PlayerXVel
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bmi :neg_xvel
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cmp #6
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bcs :not_l
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:neg_xvel inc
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inc
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sta PlayerXVel
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bra :do_render
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:not_l
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; Update the camera position
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:do_render
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jsr UpdatePlayerPos ; Moves in global cordinates
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jsr UpdateCameraPos ; Moves the screen
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jsr UpdatePlayerLocal ; Gets local sprite coordinates
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pea HERO_SLOT
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lda PlayerX
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pha
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lda PlayerY
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pha
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_GTEMoveSprite ; Move the sprite to this local position
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; Update the timers
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; jsl DoTimers
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; Let's see what it looks like!
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; lda vsync
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; beq :no_vsync
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;:vsyncloop jsl GetVerticalCounter ; 8-bit value
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; cmp ScreenY0
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; bcc :vsyncloop
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; sec
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; sbc ScreenY0
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; cmp #8
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; bcs :vsyncloop
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; lda #1
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; jsl SetBorderColor
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;:no_vsync
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_GTERender
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; lda vsync
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; beq :no_vsync2
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; lda #0
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; jsl SetBorderColor
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;:no_vsync2
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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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brl EvtLoop
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; Exit code
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Exit
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_GTEShutDown
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_QuitGS qtRec
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bcs Fatal
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Fatal brk $00
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Hold
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_GTERender
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:busy
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pha
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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 :busy
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jmp Exit
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BG1DataFile strl '1/sunset.c1'
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; Color palette
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MyPalette dw $068F,$0EDA,$0000,$0000,$0BF1,$00A0,$0EEE,$0456,$0FA4,$0F59,$0E30,$01CE,$02E3,$0870,$0F93,$0FD7
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; B&W Palette
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; MyPalette dw $0000,$0EDA,$0000,$0E51,$0BF1,$00A0,$0EEE,$0456,$0FA4,$0F59,$0E30,$01CE,$02E3,$0870,$0F93,$0FFF
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PlayerGlobalX ds 2
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PlayerGlobalY ds 2
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PlayerID ds 2
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PlayerX ds 2
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PlayerXOld ds 2
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PlayerY ds 2
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PlayerYOld ds 2
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PlayerLastPos ds 2
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PlayerXVel ds 2
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PlayerYVel ds 2
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KeyState ds 2
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PlayerStanding ds 2
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MaxGlobalX ds 2
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MaxGlobalY ds 2
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MaxBG0X ds 2
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MaxBG0Y ds 2
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oldOneSecondCounter ds 2
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frameCount ds 2
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MyUserId ds 2
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MyDirectPage ds 2
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PLAYER_X_MIN equ 0
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PLAYER_X_MAX equ 160-4
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PLAYER_Y_MIN equ 0
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PLAYER_Y_MAX equ 200-8
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EMPTY_TILE equ 33 ; the tile that makes up the background
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SetLimits
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pha ; Allocate space for width (in tiles), height (in tiles), pointer
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pha
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pha
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pha
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_GTEGetBG0TileMapInfo
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pla
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sta TileMapWidth
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pla
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sta TileMapHeight
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pla
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pla ; discard the pointer
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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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sta ScreenWidth
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pla
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sta ScreenHeight
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lda TileMapWidth
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asl
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asl
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sta MaxGlobalX
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sec
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sbc ScreenWidth
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sta MaxBG0X
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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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sta MaxGlobalY
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sec
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sbc ScreenHeight
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sta MaxBG0Y
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rts
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; Set the scroll position based on the global coordinates of the player
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; Try to center the player on the screen
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UpdateCameraPos
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lda ScreenWidth
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lsr
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sta appTmp0
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lda PlayerGlobalX
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sec
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sbc appTmp0
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bpl :x_pos
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lda #0
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:x_pos cmp MaxBG0X
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bcc :x_ok
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lda MaxBG0X
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:x_ok sta StartX
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lda ScreenHeight
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lsr
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sta appTmp0
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lda PlayerGlobalY
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sec
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sbc appTmp0
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bpl :y_pos
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lda #0
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:y_pos cmp MaxBG0Y
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bcc :y_ok
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lda MaxBG0Y
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:y_ok sta StartY
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pei StartX
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pei StartY
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_GTESetBG0Origin
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pea $0000
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lda StartY
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lsr
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pha
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_GTESetBG1Origin
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rts
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; Convert the global coordinates to adjusted local coordinated (compensating for wrap-around)
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UpdatePlayerLocal
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lda PlayerGlobalX
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sec
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sbc StartX
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sta PlayerX
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lda PlayerGlobalY
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sec
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sbc StartY
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sta PlayerY
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rts
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; Simple updates with gravity and collisions. It's important that eveything in this
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; subroutine be done against
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UpdatePlayerPos
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stz PlayerStanding
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lda PlayerYVel
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bmi :no_ground_check
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; Check if the player is standing on the ground at their current local position
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pha ; space for result
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lda PlayerX
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pha
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lda PlayerY
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clc
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adc #16
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pha
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_GTEGetTileAt
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pla
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and #TILE_ID_MASK
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cmp #EMPTY_TILE
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beq :no_ground_check
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lda PlayerGlobalY
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and #$fff8
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sta PlayerGlobalY
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stz PlayerYVel
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lda #1
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sta PlayerStanding
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:no_ground_check
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lda PlayerGlobalY
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clc
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adc PlayerYVel
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bpl *+5
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lda #0
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cmp MaxGlobalY
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bcc *+5
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lda MaxGlobalY
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sta PlayerGlobalY
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lda PlayerGlobalX
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clc
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adc PlayerXVel
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bpl *+5
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lda #0
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cmp MaxGlobalX
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bcc *+5
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lda MaxGlobalX
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sta PlayerGlobalX
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ldx LastHFlip
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lda PlayerXVel
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beq :no_dxv
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bpl :pos_dxv
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ldx #SPRITE_HFLIP
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inc
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bra :no_dxv
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:pos_dxv
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ldx #0
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dec
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:no_dxv
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sta PlayerXVel
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stx LastHFlip
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ldx #0
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lda PlayerStanding
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bne :too_fast
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lda PlayerYVel
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inc
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bmi :is_neg
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cmp #4
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bcs :too_fast
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:is_neg
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ldx #SPRITE_VFLIP
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sta PlayerYVel
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:too_fast
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txa
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ora LastHFlip
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ora #HERO_ID
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sta SpriteFrame
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lda SpriteCount
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eor SpriteToggle
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sta SpriteCount
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; If the player is standing and XVel != 0, pick a frame
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lda PlayerStanding
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beq :frame
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lda PlayerXVel
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beq :frame
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jsr _GetVBLTicks
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and #$0003
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inc
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and #$0003
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asl
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adc SpriteFrame
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sta SpriteFrame
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:frame
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lda SpriteFrame
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ora SpriteCount
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tax
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lda PlayerID
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; jsl UpdateSprite ; Change the tile ID and / or flags
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; pea HERO_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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rts
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ToolPath str '1/Tool160'
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LastHFlip dw 0
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SpriteFrame ds 2
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SpriteCount dw 0
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SpriteToggle dw 0
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openRec dw 2 ; pCount
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ds 2 ; refNum
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adrl BG1DataFile ; pathname
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eofRec dw 2 ; pCount
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ds 2 ; refNum
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ds 4 ; eof
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readRec dw 4 ; pCount
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ds 2 ; refNum
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ds 4 ; dataBuffer
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ds 4 ; requestCount
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ds 4 ; transferCount
|
|
|
|
closeRec dw 1 ; pCount
|
|
ds 2 ; refNum
|
|
|
|
qtRec adrl $0000
|
|
da $00
|
|
|
|
vsync dw $0000
|
|
|
|
|
|
LoadFile
|
|
stx openRec+4 ; X=File, A=Bank (high word) assumed zero for low
|
|
stz readRec+4
|
|
sta readRec+6
|
|
|
|
: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'
|
|
|
|
|
|
; Load the GTE User Tool and install it
|
|
GTEStartUp
|
|
pea $0000
|
|
_LoaderStatus
|
|
pla
|
|
|
|
pea $0000
|
|
pea $0000
|
|
pea $0000
|
|
pea $0000
|
|
pea $0000 ; result space
|
|
|
|
lda MyUserId
|
|
pha
|
|
|
|
pea #^ToolPath
|
|
pea #ToolPath
|
|
pea $0001 ; do not load into special memory
|
|
_InitialLoad
|
|
bcc :ok1
|
|
brk $01
|
|
|
|
:ok1
|
|
ply
|
|
pla ; Address of the loaded tool
|
|
plx
|
|
ply
|
|
ply
|
|
|
|
pea $8000 ; User toolset
|
|
pea $00A0 ; Set the tool set number
|
|
phx
|
|
pha ; Address of function pointer table
|
|
_SetTSPtr
|
|
bcc :ok2
|
|
brk $02
|
|
|
|
:ok2
|
|
clc ; Give GTE a page of direct page memory
|
|
tdc
|
|
adc #$0100
|
|
pha
|
|
pea #ENGINE_MODE_DYN_TILES+ENGINE_MODE_TWO_LAYER ; Enable Dynamic Tiles and Two Layer
|
|
lda MyUserId ; Pass the userId for memory allocation
|
|
pha
|
|
_GTEStartUp
|
|
bcc :ok3
|
|
brk $03
|
|
|
|
:ok3
|
|
rts
|
|
|
|
_Deref MAC
|
|
phb ; save caller's data bank register
|
|
pha ; push high word of handle on stack
|
|
plb ; sets B to the bank byte of the pointer
|
|
lda |$0002,x ; load the high word of the master pointer
|
|
pha ; and save it on the stack
|
|
lda |$0000,x ; load the low word of the master pointer
|
|
tax ; and return it in X
|
|
pla ; restore the high word in A
|
|
plb ; pull the handle's high word high byte off the
|
|
; stack
|
|
plb ; restore the caller's data bank register
|
|
<<<
|
|
|
|
AllocBank PushLong #0
|
|
PushLong #$10000
|
|
PushWord MyUserId
|
|
PushWord #%11000000_00011100
|
|
PushLong #0
|
|
_NewHandle
|
|
plx ; base address of the new handle
|
|
pla ; high address 00XX of the new handle (bank)
|
|
_Deref
|
|
rts
|
|
|
|
_GetVBLTicks
|
|
PushLong #0
|
|
_GetTick
|
|
pla
|
|
plx
|
|
rts
|
|
|
|
PUT ../shell/Overlay.s
|
|
PUT gen/App.TileMapBG0.s
|
|
PUT gen/App.TileSetAnim.s
|