; Test driver to exercise graphics routines. REL DSK MAINSEG use Locator.Macs use Load.Macs use Mem.Macs use Misc.Macs use Util.Macs use EDS.GSOS.Macs use GTE.Macs mx %00 tiledata EXT ; tileset buffer TileSetPalette EXT ; Keycodes LEFT_ARROW equ $08 RIGHT_ARROW equ $15 UP_ARROW equ $0B DOWN_ARROW equ $0A ; Direct page space MyUserId equ 0 BankLoad equ 2 StartX equ 4 StartY equ 6 TileMapWidth equ 8 TileMapHeight equ 10 ScreenWidth equ 12 ScreenHeight equ 14 MaxGlobalX equ 16 MaxGlobalY equ 18 MaxBG0X equ 20 MaxBG0Y equ 22 frameCount equ 24 OldOneSecondCounter equ 26 appTmp0 equ 28 phk plb sta MyUserId ; GS/OS passes the memory manager user ID for the application into the program tdc sta MyDirectPage ; Keep a copy for the overlay callback _MTStartUp ; GTE requires the miscellaneous toolset to be running lda #ENGINE_MODE_USER_TOOL ; Engine in Fast Mode as a User Tool jsr GTEStartUp ; Load and install the GTE User Tool ; Initialize local variables stz StartX stz StartY stz frameCount ; Load a tileset pea 0 pea 256 pea #^tiledata pea #tiledata _GTELoadTileSet pea $0000 pea #^TileSetPalette pea #TileSetPalette _GTESetPalette ; Set up our level data jsr BG0SetUp jsr SetLimits pea #80 pei MaxBG0Y _GTESetBG0Origin lda #193 ; Tile ID of '0' jsr InitOverlay ; Initialize the status bar pha _GTEGetSeconds pla sta OldOneSecondCounter jsr UdtOverlay ; Set up the per-scanline rendering lda #0 jsr InitOffsets pea #scanlineHorzOffset pea #^BG0Offsets pea #BG0Offsets _GTESetAddress pea $0000 ; one regular render to fill the screen with the tilemap _GTERender ; Set up a very specific test. First, we draw a sprite into the sprite plane, and then ; leave it alone. We are just testing the ability to merge sprite plane data into ; the play field tiles. EvtLoop pha _GTEReadControl pla jsr HandleKeys ; Do the generic key handlers bcs :do_more brl :do_render :do_more cmp #'d' bne :not_d lda StartX cmp MaxBG0X bcc *+5 brl :do_render inc StartX lda StartX jsr SetOffsets ; pei StartX ; pei StartY ; _GTESetBG0Origin brl :do_render :not_d cmp #'a' bne :not_a lda StartX bne *+5 brl :do_render dec StartX lda StartX jsr SetOffsets ; pei StartX ; pei StartY ; _GTESetBG0Origin brl :do_render :not_a cmp #'s' bne :not_s lda StartY cmp MaxBG0Y bcs :do_render inc StartY pei StartX pei StartY _GTESetBG0Origin bra :do_render :not_s cmp #'w' bne :not_w lda StartY beq :do_render dec StartY pei StartX pei StartY _GTESetBG0Origin bra :do_render :not_w :do_render pea #RENDER_PER_SCANLINE _GTERender ; Update the performance counters inc frameCount pha _GTEGetSeconds pla cmp OldOneSecondCounter beq :noudt sta OldOneSecondCounter jsr UdtOverlay stz frameCount :noudt brl EvtLoop ; Exit code Exit _GTEShutDown Quit _QuitGS qtRec bcs Fatal Fatal brk $00 qtRec adrl $0000 da $00 ; Color palette MyDirectPage ds 2 SetLimits pha ; Allocate space for width (in tiles), height (in tiles), pointer pha pha pha _GTEGetBG0TileMapInfo pla sta TileMapWidth pla sta TileMapHeight pla pla ; discard the pointer pha ; Allocate space for x, y, width, height pha pha pha _GTEGetScreenInfo pla pla ; Discard screen corner pla sta ScreenWidth pla sta ScreenHeight lda TileMapWidth asl asl sta MaxGlobalX sec sbc ScreenWidth sta MaxBG0X lda TileMapHeight asl asl asl sta MaxGlobalY sec sbc ScreenHeight sta MaxBG0Y ; Check if the current StartX and StartY are out of bounds lda StartX cmp MaxBG0X bcc :x_ok lda MaxBG0X :x_ok pha lda StartY cmp MaxBG0Y bcc :y_ok lda MaxBG0Y :y_ok pha _GTESetBG0Origin rts SetOffsets and #$00FF brl _SetOffsets InitOffsets and #$00FF sta appTmp0 ldx #0 ldy #80 jsr _InitRange ldx #80 ldy #80 jsr _InitRange ldx #160 ldy #48 jsr _InitRange lda appTmp0 _SetOffsets ldx #160 ldy #48 jsr _SetRange lsr ldx #80 ldy #80 jsr _SetRange lsr ldx #0 ldy #80 jsr _SetRange rts _SetRange pha txa asl tax :loop2 lda BG0Offsets,x and #$FF00 ora 1,s sta BG0Offsets,x dey beq :done inx inx cpx #416 bcc :loop2 :done pla rts _InitRange txa asl tax tya dec and #$00FF xba :loop1 sta BG0Offsets,x sec sbc #$0100 dey beq :done inx inx cpx #416 bcc :loop1 :done rts BG0Offsets ds 416 PUT ../StartUp.s PUT ../../shell/Overlay.s PUT gen/App.TileMapBG0.s