mirror of
https://github.com/lscharen/iigs-game-engine.git
synced 2024-12-01 23:51:12 +00:00
664 lines
20 KiB
ArmAsm
664 lines
20 KiB
ArmAsm
; Test driver to exercise graphics routines.
|
|
|
|
REL
|
|
DSK MAINSEG
|
|
|
|
use Locator.Macs.s
|
|
use Misc.Macs.s
|
|
use EDS.GSOS.MACS.s
|
|
use Tool222.Macs.s
|
|
use Util.Macs.s
|
|
use CORE.MACS.s
|
|
use ../../src/GTE.s
|
|
use ../../src/Defs.s
|
|
|
|
mx %00
|
|
|
|
; Feature flags
|
|
NO_INTERRUPTS equ 0 ; turn off for crossrunner debugging
|
|
NO_MUSIC equ 1 ; turn music + tool loading off
|
|
|
|
; Keycodes
|
|
LEFT_ARROW equ $08
|
|
RIGHT_ARROW equ $15
|
|
UP_ARROW equ $0B
|
|
DOWN_ARROW equ $0A
|
|
|
|
; Typical init
|
|
phk
|
|
plb
|
|
|
|
jsl EngineStartUp
|
|
|
|
lda #^MyPalette ; Fill Palette #0 with our colors
|
|
ldx #MyPalette
|
|
ldy #0
|
|
jsl SetPalette
|
|
|
|
ldx #5 ; Mode 0 is full-screen, mode 5 is 256x160
|
|
ldx #320
|
|
ldy #200
|
|
jsl SetScreenMode
|
|
|
|
; Set up our level data
|
|
jsr BG0SetUp
|
|
jsr TileAnimInit
|
|
jsr SetLimits
|
|
|
|
jsr InitOverlay ; Initialize the status bar
|
|
stz frameCount
|
|
ldal OneSecondCounter
|
|
sta oldOneSecondCounter
|
|
jsr UdtOverlay
|
|
|
|
; Allocate a buffer for loading files
|
|
jsl AllocBank ; Alloc 64KB for Load/Unpack
|
|
sta BankLoad ; Store "Bank Pointer"
|
|
|
|
; Load in the 256 color background into BG1 buffer
|
|
brl :nobackground
|
|
DoLoadBG1
|
|
lda BankLoad
|
|
ldx #BG1DataFile
|
|
jsr LoadFile
|
|
|
|
ldx BankLoad
|
|
lda #0
|
|
ldy BG1DataBank
|
|
jsl CopyPicToBG1
|
|
|
|
; Copy the palettes into place
|
|
|
|
stz tmp0
|
|
:ploop
|
|
lda tmp0
|
|
tay
|
|
asl
|
|
asl
|
|
asl
|
|
asl
|
|
asl
|
|
clc
|
|
adc #$7E00
|
|
tax
|
|
|
|
lda BankLoad
|
|
jsl SetPalette
|
|
|
|
inc tmp0
|
|
lda tmp0
|
|
cmp #16
|
|
bcc :ploop
|
|
|
|
; Bind the SCBs
|
|
|
|
lda BankLoad
|
|
ora #$8000 ; set high bit to bind to BG1 Y-position
|
|
ldx #$7D00
|
|
jsl SetSCBArray
|
|
:nobackground
|
|
|
|
; Initialize the sprite's global position (this is tracked outside of the tile engine)
|
|
lda #16
|
|
sta PlayerGlobalX
|
|
lda MaxGlobalY
|
|
sec
|
|
lda #40 ; 32 for tiles, 8 for sprite
|
|
sta PlayerGlobalY
|
|
|
|
stz PlayerXVel
|
|
stz PlayerYVel
|
|
|
|
; Add a sprite to the engine and save it's sprite ID
|
|
SPRITE_ID equ {SPRITE_16X16+145}
|
|
MUSHROOM_ID equ {SPRITE_16X16+255}
|
|
|
|
lda #MUSHROOM_ID ; 16x16 sprite, tile ID = 145
|
|
ldx #80
|
|
ldy #152
|
|
jsl AddSprite
|
|
|
|
jsr UpdatePlayerLocal
|
|
lda #SPRITE_ID ; 16x16 sprite, tile ID = 145
|
|
ldx PlayerX
|
|
ldy PlayerY
|
|
jsl AddSprite
|
|
bcc :sprite_ok
|
|
brl Exit ; If we could not allocate a sprite, exit
|
|
:sprite_ok
|
|
sta PlayerID
|
|
|
|
; Draw the initial screen
|
|
|
|
lda #DIRTY_BIT_BG0_REFRESH ; Redraw all of the tiles on the next Render
|
|
tsb DirtyBits
|
|
jsl Render
|
|
|
|
; 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
|
|
jsl ReadControl
|
|
|
|
; Check the buttons first
|
|
pha
|
|
|
|
bit #$0100
|
|
beq :no_jump
|
|
lda PlayerStanding
|
|
beq :no_jump
|
|
lda #$FFF8
|
|
sta PlayerYVel
|
|
:no_jump
|
|
|
|
|
|
; Enable/disable v-sync
|
|
lda 1,s
|
|
bit #$0400
|
|
beq :no_key_down
|
|
and #$007F
|
|
cmp #'v'
|
|
bne :not_v
|
|
lda #$0001
|
|
eor vsync
|
|
sta vsync
|
|
:not_v
|
|
cmp #'f'
|
|
bne :not_f
|
|
lda SpriteToggle
|
|
eor #SPRITE_HIDE
|
|
sta SpriteToggle
|
|
bne :not_f
|
|
stz SpriteCount
|
|
|
|
:not_f
|
|
:no_key_down
|
|
|
|
|
|
pla
|
|
and #$007F ; Ignore the buttons for now
|
|
|
|
cmp #'q'
|
|
bne :not_q
|
|
brl Exit
|
|
:not_q
|
|
|
|
cmp #'d'
|
|
bne :not_d
|
|
lda StartX
|
|
cmp MaxBG0X
|
|
bcs :do_render
|
|
inc
|
|
jsl SetBG0XPos
|
|
bra :do_render
|
|
:not_d
|
|
|
|
cmp #'a'
|
|
bne :not_a
|
|
lda StartX
|
|
beq :do_render
|
|
dec
|
|
jsl SetBG0XPos
|
|
bra :do_render
|
|
:not_a
|
|
|
|
cmp #'s'
|
|
bne :not_s
|
|
lda StartY
|
|
cmp MaxBG0Y
|
|
bcs :do_render
|
|
inc
|
|
jsl SetBG0YPos
|
|
bra :do_render
|
|
:not_s
|
|
|
|
cmp #'w'
|
|
bne :not_w
|
|
lda StartY
|
|
beq :do_render
|
|
dec
|
|
jsl SetBG0YPos
|
|
bra :do_render
|
|
:not_w
|
|
|
|
; Do j,l to move the character left/right
|
|
cmp #'j'
|
|
bne :not_j
|
|
lda PlayerXVel
|
|
bpl :pos_xvel
|
|
cmp #$FFFA
|
|
bcc :not_j
|
|
:pos_xvel dec
|
|
dec
|
|
sta PlayerXVel
|
|
bra :do_render
|
|
:not_j
|
|
|
|
cmp #'l'
|
|
bne :not_l
|
|
lda PlayerXVel
|
|
bmi :neg_xvel
|
|
cmp #6
|
|
bcs :not_l
|
|
:neg_xvel inc
|
|
inc
|
|
sta PlayerXVel
|
|
bra :do_render
|
|
:not_l
|
|
|
|
|
|
; Update the camera position
|
|
|
|
:do_render
|
|
jsr UpdatePlayerPos ; Moves in global cordinates
|
|
jsr UpdateCameraPos ; Moves the screen
|
|
jsr UpdatePlayerLocal ; Gets local sprite coordinates
|
|
|
|
lda PlayerID
|
|
ldx PlayerX
|
|
ldy PlayerY
|
|
jsl MoveSprite ; Move the sprite to this local position
|
|
|
|
; Update the timers
|
|
jsl DoTimers
|
|
|
|
; Let's see what it looks like!
|
|
|
|
lda vsync
|
|
beq :no_vsync
|
|
:vsyncloop jsl GetVerticalCounter ; 8-bit value
|
|
cmp ScreenY0
|
|
bcc :vsyncloop
|
|
sec
|
|
sbc ScreenY0
|
|
cmp #8
|
|
bcs :vsyncloop
|
|
lda #1
|
|
jsl SetBorderColor
|
|
:no_vsync
|
|
jsl Render
|
|
|
|
lda vsync
|
|
beq :no_vsync2
|
|
lda #0
|
|
jsl SetBorderColor
|
|
:no_vsync2
|
|
|
|
; Update the performance counters
|
|
|
|
inc frameCount
|
|
ldal OneSecondCounter
|
|
cmp oldOneSecondCounter
|
|
beq :noudt
|
|
sta oldOneSecondCounter
|
|
jsr UdtOverlay
|
|
stz frameCount
|
|
:noudt
|
|
brl EvtLoop
|
|
|
|
; Exit code
|
|
Exit
|
|
jsl EngineShutDown
|
|
|
|
_QuitGS qtRec
|
|
|
|
bcs Fatal
|
|
Fatal brk $00
|
|
|
|
BG1DataFile strl '1/sunset.c1'
|
|
|
|
; Color palette
|
|
MyPalette dw $068F,$0EDA,$0000,$0000,$0BF1,$00A0,$0EEE,$0456,$0FA4,$0F59,$0E30,$01CE,$02E3,$0870,$0F93,$0FD7
|
|
; B&W Palette
|
|
;MyPalette dw $0000,$0EDA,$0000,$0E51,$0BF1,$00A0,$0EEE,$0456,$0FA4,$0F59,$0E30,$01CE,$02E3,$0870,$0F93,$0FFF
|
|
PlayerGlobalX ds 2
|
|
PlayerGlobalY ds 2
|
|
|
|
PlayerID ds 2
|
|
PlayerX ds 2
|
|
PlayerXOld ds 2
|
|
PlayerY ds 2
|
|
PlayerYOld ds 2
|
|
PlayerLastPos ds 2
|
|
PlayerXVel ds 2
|
|
PlayerYVel ds 2
|
|
KeyState ds 2
|
|
PlayerStanding ds 2
|
|
MaxGlobalX ds 2
|
|
MaxGlobalY ds 2
|
|
MaxBG0X ds 2
|
|
MaxBG0Y ds 2
|
|
|
|
oldOneSecondCounter ds 2
|
|
frameCount ds 2
|
|
|
|
PLAYER_X_MIN equ 0
|
|
PLAYER_X_MAX equ 160-4
|
|
PLAYER_Y_MIN equ 0
|
|
PLAYER_Y_MAX equ 200-8
|
|
|
|
EMPTY_TILE equ 33 ; the tile that makes up the background
|
|
|
|
AdjustLocalX
|
|
clc
|
|
adc StartXMod164
|
|
cmp #164
|
|
bcc *+5
|
|
sbc #164
|
|
rts
|
|
AdjustLocalY
|
|
clc
|
|
adc StartYMod208
|
|
cmp #208
|
|
bcc *+5
|
|
sbc #208
|
|
rts
|
|
|
|
SetLimits
|
|
lda TileMapWidth
|
|
asl
|
|
asl
|
|
sta MaxGlobalX
|
|
sec
|
|
sbc ScreenWidth
|
|
sta MaxBG0X
|
|
|
|
lda TileMapHeight
|
|
asl
|
|
asl
|
|
asl
|
|
sta MaxGlobalY
|
|
sec
|
|
sbc ScreenHeight
|
|
sta MaxBG0Y
|
|
rts
|
|
|
|
; Set the scroll position based on the global cooridinate of the player
|
|
; Try to center the player on the screen
|
|
UpdateCameraPos
|
|
lda ScreenWidth
|
|
lsr
|
|
sta tmp0
|
|
lda PlayerGlobalX
|
|
sec
|
|
sbc tmp0
|
|
bpl :x_pos
|
|
lda #0
|
|
:x_pos cmp MaxBG0X
|
|
bcc :x_ok
|
|
lda MaxBG0X
|
|
:x_ok jsl SetBG0XPos
|
|
|
|
lda ScreenHeight
|
|
lsr
|
|
sta tmp0
|
|
lda PlayerGlobalY
|
|
sec
|
|
sbc tmp0
|
|
bpl :y_pos
|
|
lda #0
|
|
:y_pos cmp MaxBG0Y
|
|
bcc :y_ok
|
|
lda MaxBG0Y
|
|
:y_ok jsl SetBG0YPos
|
|
|
|
lda StartY
|
|
lsr
|
|
jsl SetBG1YPos
|
|
rts
|
|
|
|
; Convert the global coordinates to adjusted local coordinated (compensating for wrap-around)
|
|
UpdatePlayerLocal
|
|
lda PlayerGlobalX
|
|
sec
|
|
sbc StartX
|
|
; jsr AdjustLocalX
|
|
sta PlayerX
|
|
|
|
lda PlayerGlobalY
|
|
sec
|
|
sbc StartY
|
|
; jsr AdjustLocalY
|
|
sta PlayerY
|
|
rts
|
|
|
|
; Simple updates with gravity and collisions. It's important that eveything in this
|
|
; subroutine be done against
|
|
UpdatePlayerPos
|
|
stz PlayerStanding
|
|
lda PlayerYVel
|
|
bmi :no_ground_check
|
|
|
|
; Check if the player is standing on the ground at their current local position
|
|
|
|
ldx PlayerX
|
|
lda PlayerY
|
|
clc
|
|
adc #16
|
|
tay
|
|
jsr GetTileAt
|
|
and #$1FF
|
|
cmp #EMPTY_TILE
|
|
beq :no_ground_check
|
|
|
|
lda PlayerGlobalY
|
|
and #$fff8
|
|
sta PlayerGlobalY
|
|
stz PlayerYVel
|
|
lda #1
|
|
sta PlayerStanding
|
|
|
|
:no_ground_check
|
|
lda PlayerGlobalY
|
|
clc
|
|
adc PlayerYVel
|
|
bpl *+5
|
|
lda #0
|
|
|
|
cmp MaxGlobalY
|
|
bcc *+5
|
|
lda MaxGlobalY
|
|
sta PlayerGlobalY
|
|
|
|
lda PlayerGlobalX
|
|
clc
|
|
adc PlayerXVel
|
|
bpl *+5
|
|
lda #0
|
|
|
|
cmp MaxGlobalX
|
|
bcc *+5
|
|
lda MaxGlobalX
|
|
sta PlayerGlobalX
|
|
|
|
ldx LastHFlip
|
|
lda PlayerXVel
|
|
beq :no_dxv
|
|
bpl :pos_dxv
|
|
ldx #SPRITE_HFLIP
|
|
inc
|
|
bra :no_dxv
|
|
:pos_dxv
|
|
ldx #0
|
|
dec
|
|
:no_dxv
|
|
sta PlayerXVel
|
|
stx LastHFlip
|
|
|
|
ldx #0
|
|
lda PlayerStanding
|
|
bne :too_fast
|
|
|
|
lda PlayerYVel
|
|
inc
|
|
bmi :is_neg
|
|
cmp #4
|
|
bcs :too_fast
|
|
:is_neg
|
|
ldx #SPRITE_VFLIP
|
|
sta PlayerYVel
|
|
:too_fast
|
|
|
|
txa
|
|
ora LastHFlip
|
|
ora #SPRITE_ID
|
|
sta SpriteFrame
|
|
|
|
lda SpriteCount
|
|
eor SpriteToggle
|
|
sta SpriteCount
|
|
|
|
; If the player is standing and XVel != 0, pick a frame
|
|
lda PlayerStanding
|
|
beq :frame
|
|
lda PlayerXVel
|
|
beq :frame
|
|
|
|
jsl GetVBLTicks
|
|
and #$0003
|
|
inc
|
|
and #$0003
|
|
asl
|
|
adc SpriteFrame
|
|
sta SpriteFrame
|
|
:frame
|
|
lda SpriteFrame
|
|
ora SpriteCount
|
|
tax
|
|
|
|
lda PlayerID
|
|
jsl UpdateSprite ; Change the tile ID and / or flags
|
|
|
|
rts
|
|
|
|
LastHFlip dw 0
|
|
SpriteFrame ds 2
|
|
SpriteCount dw 0
|
|
SpriteToggle dw 0
|
|
|
|
; X = coordinate
|
|
; Y = coordinate
|
|
GetTileAt
|
|
txa
|
|
bmi :out
|
|
clc
|
|
adc StartXMod164
|
|
cmp #164
|
|
bcc *+5
|
|
sbc #164
|
|
|
|
lsr
|
|
lsr
|
|
tax
|
|
|
|
tya
|
|
bmi :out
|
|
clc
|
|
adc StartYMod208
|
|
cmp #208
|
|
bcc *+5
|
|
sbc #208
|
|
|
|
lsr
|
|
lsr
|
|
lsr
|
|
tay
|
|
|
|
jsl GetTileStoreOffset
|
|
tax
|
|
ldal TileStore+TS_TILE_ID,x
|
|
rts
|
|
|
|
:out
|
|
lda #EMPTY_TILE
|
|
rts
|
|
|
|
; Position the screen with the botom-left corner of the tilemap visible
|
|
MovePlayerToOrigin
|
|
lda #0 ; Set the player's position
|
|
jsl SetBG0XPos
|
|
|
|
lda TileMapHeight
|
|
asl
|
|
asl
|
|
asl
|
|
sec
|
|
sbc ScreenHeight
|
|
jsl SetBG0YPos
|
|
rts
|
|
|
|
openRec dw 2 ; pCount
|
|
ds 2 ; refNum
|
|
adrl BG1DataFile ; pathname
|
|
|
|
eofRec dw 2 ; pCount
|
|
ds 2 ; refNum
|
|
ds 4 ; eof
|
|
|
|
readRec dw 4 ; pCount
|
|
ds 2 ; refNum
|
|
ds 4 ; dataBuffer
|
|
ds 4 ; requestCount
|
|
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'
|
|
|
|
PUT ../shell/Overlay.s
|
|
PUT gen/App.TileMapBG0.s
|
|
PUT gen/App.TileSetAnim.s
|
|
|
|
ANGLEBNK ENT |