; 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 OldOneSecondCounter equ 26 appTmp0 equ 28 appTmp1 equ 30 appTmp2 equ 32 PlayerX equ 34 PlayerY equ 36 PlayerXVel equ 38 PlayerYVel equ 40 PlayerStanding equ 42 PlayerGlobalX equ 44 PlayerGlobalY equ 46 LastHFlip equ 48 SpriteFrame equ 50 SpriteToggle equ 52 SpriteCount equ 54 Scale equ 56 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_TWO_LAYER+ENGINE_MODE_DYN_TILES jsr GTEStartUp ; Load and install the GTE User Tool ; Initialize local variables stz StartX stz StartY stz frameCount stz bg1rotation stz LastHFlip stz SpriteCount stz SpriteToggle stz Scale ; Initialize the graphics screen playfield pea #320 pea #200 _GTESetScreenMode ; Load a tileset pea #^tiledata pea #tiledata _GTELoadTileSet pea $0000 pea #^TileSetPalette pea #TileSetPalette _GTESetPalette ; Reset the BG1 buffer pea $DDDD _GTEClearBG1Buffer ; Set up our level data jsr BG0SetUp jsr SetLimits jsr AllocBank ; Alloc 64KB for Load/Unpack sta BankLoad ; Store "Bank Pointer" ldx #BG1DataFile ; Load the background file into the bank jsr LoadFile lda #193 ; Tile ID of '0' jsr InitOverlay ; Initialize the status bar pha _GTEGetSeconds pla sta OldOneSecondCounter jsr UdtOverlay pha ; space for result pea #6 pea ^UpdateBG1Rotation pea UpdateBG1Rotation pea $0000 _GTEAddTimer pla ; Initialize the sprite's global position (this is tracked outside of the tile engine) lda #16 sta PlayerGlobalX sta PlayerX lda MaxGlobalY sec sbc #64 ; 32 for tiles, 16 for sprite sta PlayerGlobalY sta PlayerY stz PlayerXVel stz PlayerYVel ; Create the sprites HERO_FRAME_1 equ {SPRITE_16X16+1} HERO_VBUFF_1 equ VBUFF_SPRITE_START+0*VBUFF_SPRITE_STEP HERO_FRAME_2 equ {SPRITE_16X16+7} HERO_VBUFF_2 equ VBUFF_SPRITE_START+1*VBUFF_SPRITE_STEP HERO_FRAME_3 equ {SPRITE_16X8+65} HERO_VBUFF_3 equ VBUFF_SPRITE_START+2*VBUFF_SPRITE_STEP HERO_FRAME_4 equ {SPRITE_16X8+71} HERO_VBUFF_4 equ VBUFF_SPRITE_START+3*VBUFF_SPRITE_STEP HERO_SLOT_1 equ 1 HERO_SLOT_2 equ 2 pea HERO_FRAME_1 pea HERO_VBUFF_1 _GTECreateSpriteStamp pea HERO_FRAME_2 pea HERO_VBUFF_2 _GTECreateSpriteStamp pea HERO_FRAME_3 pea HERO_VBUFF_3 _GTECreateSpriteStamp pea HERO_FRAME_4 pea HERO_VBUFF_4 _GTECreateSpriteStamp pea HERO_FRAME_1 pei PlayerX pei PlayerY pea HERO_SLOT_1 ; Put the player in slot 1 _GTEAddSprite pea HERO_SLOT_1 pea $0000 pea HERO_VBUFF_1 ; and use this stamp _GTEUpdateSprite pea HERO_FRAME_2 pei PlayerX lda PlayerY clc adc #16 pha pea HERO_SLOT_2 ; Put the player in slot 1 _GTEAddSprite pea HERO_SLOT_2 pea $0000 pea HERO_VBUFF_3 ; and use this stamp _GTEUpdateSprite EvtLoop pha _GTEReadControl pla jsr HandleKeys ; Do the generic key handlers bcs :do_more brl do_render :do_more bit #PAD_BUTTON_A beq :no_a pha jsr handle_a pla :no_a bit #PAD_KEY_DOWN beq :reg_key and #$007F cmp #'s' bne :reg_key inc Scale pei Scale _GTESetBG1Scale jmp do_render :reg_key and #$007F cmp #LEFT_ARROW bne *+5 jmp handle_left cmp #RIGHT_ARROW bne *+5 jmp handle_right cmp #' ' bne :not_stop stz PlayerXVel bra do_render :not_stop cmp #'b' ; show background bne :not_b jsr ShowBG1 :not_b do_render jsr UpdatePlayerPos ; Apply forces jsr ApplyCollisions ; Check if we run into things jsr UpdateCameraPos ; Moves the screen pea HERO_SLOT_1 pei PlayerX pei PlayerY _GTEMoveSprite ; Move the sprite to this local position pea HERO_SLOT_2 pei PlayerX lda PlayerY clc adc #16 pha _GTEMoveSprite pea #RENDER_BG1_ROTATION _GTERender ; Update the performance counters inc frameCount pha _GTEGetSeconds pla cmp OldOneSecondCounter beq :noudt sta OldOneSecondCounter jsr UdtOverlay stz frameCount :noudt brl EvtLoop handle_a lda PlayerStanding beq :no_jump lda #-9 sta PlayerYVel :no_jump rts handle_left lda PlayerXVel bpl :ok cmp #-4 bcc :out :ok dec PlayerXVel :out jmp do_render handle_right lda PlayerXVel bmi :ok cmp #6 bcs :out :ok inc PlayerXVel :out jmp do_render ShowBG1 pea #164 ; Fill everything pea #200 pea #256 lda BankLoad pha pea $0000 pea $0000 ; default flags _GTECopyPicToBG1 rts ; Simple updates with gravity and collisions. It's important that eveything in this ; subroutine be done against the VBL tick count UpdatePlayerPos lda PlayerGlobalY clc adc PlayerYVel bpl :not_neg_y lda #0 :not_neg_y cmp MaxGlobalY bcc *+4 lda MaxGlobalY sta PlayerGlobalY lda PlayerGlobalX clc adc PlayerXVel bpl :not_neg lda #0 :not_neg cmp MaxGlobalX bcc *+4 lda MaxGlobalX sta PlayerGlobalX rts ApplyCollisions ; Convert global to local coordinates lda PlayerGlobalX sec sbc StartX sta PlayerX lda PlayerGlobalY sec sbc StartY sta PlayerY ; Collision testing inc PlayerYVel stz PlayerStanding ; Check if the player is standing on the ground at their current local position pha ; space for result pei PlayerX lda PlayerY clc adc #24 pha _GTEGetTileAt pla ; Decide if mario's feet are on a "ground" tile (blocks, pipes, etc.) and #TILE_ID_MASK cmp #64 bcc :not_ground lda PlayerYVel bmi :not_ground lda PlayerGlobalY and #$fff8 sta PlayerGlobalY stz PlayerYVel ; Stop falling when we hit the ground lda #1 sta PlayerStanding bra :y_ok :not_ground lda PlayerYVel bmi :y_ok cmp #8 bcc :y_ok lda #7 sta PlayerYVel :y_ok ldx LastHFlip ; Update sprite frame based on actions lda PlayerXVel beq :no_dxv bpl :pos_dxv ldx #SPRITE_HFLIP bra :no_dxv :pos_dxv ldx #0 :no_dxv sta PlayerXVel stx LastHFlip lda SpriteCount eor SpriteToggle sta SpriteCount ; If the player is standing and XVel != 0, pick a frame ldx #2 lda PlayerXVel beq :frame jsr _GetVBLTicks and #$0006 tax :frame pea HERO_SLOT_1 pei LastHFlip lda HeroFrames1,x pha pea HERO_SLOT_2 pei LastHFlip lda HeroFrames2,x pha _GTEUpdateSprite _GTEUpdateSprite rts HeroFrames1 dw HERO_VBUFF_2,HERO_VBUFF_1,HERO_VBUFF_2,HERO_VBUFF_1 HeroFrames2 dw HERO_VBUFF_4,HERO_VBUFF_3,HERO_VBUFF_4,HERO_VBUFF_3 ; Set the scroll position based on the global coordinates of the player ; Try to center the player on the screen UpdateCameraPos lda ScreenWidth lsr sta appTmp0 lda PlayerGlobalX sec sbc appTmp0 bpl :x_pos lda #0 :x_pos cmp MaxBG0X bcc :x_ok lda MaxBG0X :x_ok sta StartX lda ScreenHeight lsr sta appTmp0 lda PlayerGlobalY sec sbc appTmp0 bpl :y_pos lda #0 :y_pos cmp MaxBG0Y bcc :y_ok lda MaxBG0Y :y_ok sta StartY pei StartX pei StartY _GTESetBG0Origin rts ; Timer callback to animate the background UpdateBG1Rotation ldal bg1rotation inc cmp #64 bcc *+5 sbc #64 stal bg1rotation pha _GTESetBG1Rotation rtl bg1rotation ds 2 ; 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 ; Load a binary file in the BG1 buffer DoLoadBG1 lda BankLoad ldx #BG1DataFile jsr LoadFile ; ldx BankLoad ; lda #0 ; ldy BG1DataBank ; jsl CopyBinToBG1 pea #256 ; fill the whole buffer pea #208 pei BankLoad pea $0008 ; skip header _GTECopyPicToBG1 rts _GetVBLTicks PushLong #0 _GetTick pla plx rts BG1DataFile strl '1/bg1.bin' frameCount equ 24 PUT ../StartUp.s PUT ../../shell/Overlay.s PUT gen/App.TileMapBG0.s