mirror of
https://github.com/jeremysrand/colourgo.git
synced 2025-01-22 18:32:02 +00:00
The game more or less works now.
This commit is contained in:
Jeremy Rand
parent
5a63950400
commit
5dc5adb39b
604
colourgo/game.s
604
colourgo/game.s
@ -37,13 +37,13 @@ COL_WHITE=3
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CHAR_HEIGHT=10
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NUM_CHAR_BITMAPS=3
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CHAR_MAX_JUMPS=2
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CHAR_XPOS=2
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CHAR_XPOS=3
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CHAR_STATE_NONE=0
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CHAR_STATE_JUMPING=1
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CHAR_STATE_FALLING=2
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JUMP_SPEED=$FF-4
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JUMP_SPEED=5
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GRAVITY=64
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GRID_YPOS=140
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@ -260,8 +260,8 @@ LINE191 = LINE190 + 1024
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jsr drawCharacter
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jsr drawGrids
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jsr updateCharacter
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jsr updateGrid
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jsr updateCharacter
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lda shouldQuit
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beq @nextframe
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@ -273,6 +273,32 @@ LINE191 = LINE190 + 1024
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.endproc
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.proc resetGame
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lda #0
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sta characterBitmap
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sta characterY
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sta characterOldY
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sta characterNumJumps
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sta characterYSpeed
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sta characterYSpeedFrac
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sta gridXShift
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sta gridXPos
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lda #COL_VIOLET
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sta characterColour
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lda #CHAR_HEIGHT
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sta characterYBottom
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sta characterOldYBottom
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lda #CHAR_STATE_FALLING
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sta characterState
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jmp setLevelAddr
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.endproc
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.proc setLevelAddr
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ldx level
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lda levelsLo,x
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@ -291,6 +317,42 @@ LINE191 = LINE190 + 1024
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.endproc
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.proc gameOver
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jsr drawCharacter
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@loop:
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lda KBD
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bpl @loop
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ldx KBDSTRB
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cmp #$9b ; Compare to Escape
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beq @quit
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cmp #$d1 ; Compare to 'Q'
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beq @quit
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cmp #$f1 ; Compare to 'q'
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beq @quit
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jsr resetGame
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jmp clearScreen
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@quit:
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lda #$01
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sta shouldQuit
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rts
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.endproc
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.proc levelWon
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lda #COL_WHITE
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sta characterColour
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inc level
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; This is weird but at this point, all of the logic we
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; need to progress to the next level is in gameOver...
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jmp gameOver
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.endproc
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.proc updateCharacter
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; Save the old character position so it can be erased
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@ -362,23 +424,281 @@ lastButtonState: .BYTE $00
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lda characterYBottom
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sta characterOldYBottom
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lda #0
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sta ZPADDR6+1
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lda characterState
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cmp #CHAR_STATE_NONE
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bne @notStateNone
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beq @stateNone
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cmp #CHAR_STATE_JUMPING
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beq @stateJumping
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jmp updateCharacterPosFalling
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@stateNone:
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jmp updateCharacterPosNone
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@stateJumping:
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jmp updateCharacterPosJumping
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.endproc
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.proc nextGridAtCharacter
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lda ZPADDR6+1
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bne @nextGrid
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lda LEVELADDR
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sta ZPADDR6
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lda LEVELADDR+1
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sta ZPADDR6+1
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lda #$0
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sta gridLeft
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lda gridXPos
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clc
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adc #MAXXBYTE
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sta screenRight
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ldy #$1
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lda (ZPADDR6),y
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beq @noneFound
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@gridLoop:
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lda gridLeft
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cmp screenRight
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bcs @noneFound
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ldy #$1
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clc
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adc (ZPADDR6),y
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; If we got a carry, that means the width of the next grid plus
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; the grid left overflowed 256. If that happens we are definitely
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; not left of gridXPos. We just need to subtract gridXPos to get
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; onto screen coords.
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bcs @overflow
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cmp gridXPos
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bcc @nextGrid
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sec
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@overflow:
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sbc gridXPos
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tax
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lda gridXShift
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beq @skipRightAdjust
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cmp #3
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bcs @skipRightAdjust
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dex
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dex
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@skipRightAdjust:
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cpx #MAXXBYTE
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bcc @rightIsNotOffScreen
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ldx #MAXXBYTE
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@rightIsNotOffScreen:
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stx gridScreenRight
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lda gridLeft
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sec
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sbc gridXPos
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bpl @leftIsOnScreen
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lda #$0
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@leftIsOnScreen:
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cmp #CHAR_XPOS+1
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bcs @noneFound
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lda gridScreenRight
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cmp #CHAR_XPOS
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bcs @foundOne
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@nextGrid:
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lda ZPADDR6
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clc
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adc #LEVEL_STRUCT_SIZE
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bcc @doNotIncHiByte
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inc ZPADDR6+1
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@doNotIncHiByte:
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sta ZPADDR6
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ldy #$1
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lda (ZPADDR6),y
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beq @noneFound
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ldy #$0
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lda gridLeft
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clc
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adc (ZPADDR6),y
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cmp screenRight
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beq @L2
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bcs @noneFound
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@L2:
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sta gridLeft
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jmp @gridLoop
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@noneFound:
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sec
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rts
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@notStateNone:
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cmp #CHAR_STATE_JUMPING
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beq @jumping
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@foundOne:
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clc
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rts
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; Locals
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screenRight: .BYTE $00
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gridLeft: .BYTE $00
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.endproc
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.proc updateCharacterPosNone
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@loop:
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jsr nextGridAtCharacter
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bcs @floorGone
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ldy #2
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lda (ZPADDR6),y
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cmp characterYBottom
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bne @loop
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ldy #4
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lda (ZPADDR6),y
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cmp characterColour
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beq @checkForWin
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jmp gameOver
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@checkForWin:
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ldy #LEVEL_STRUCT_SIZE+1
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lda (ZPADDR6),y
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bne @return
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jmp levelWon
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@floorGone:
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lda #CHAR_STATE_FALLING
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sta characterState
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lda #0
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sta characterYSpeed
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sta characterYSpeedFrac
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@return:
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rts
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.endproc
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.proc updateCharacterPosJumping
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; For jumping, we need to calculate the top first and check
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; for collisions
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lda characterY
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sec
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sbc characterYSpeed
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bcc @hitCeiling
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sta characterY
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@loop:
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jsr nextGridAtCharacter
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bcs @didNotHitHead
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ldy #2
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lda (ZPADDR6),y
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sta gridTop
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ldy #3
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lda (ZPADDR6),y
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sta gridBottom
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cmp characterOldY
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bcc @wasBelowToStart
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jmp @loop
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@wasBelowToStart:
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cmp characterY
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bcc @loop
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jmp @startFalling
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@hitCeiling:
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lda #$0
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jmp @startFalling
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@dropToBottomOfGrid:
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lda gridBottom
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@startFalling:
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sta characterY
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lda #0
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sta characterYSpeed
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sta characterYSpeedFrac
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sta characterNumJumps
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lda #CHAR_STATE_FALLING
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sta characterState
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jmp @updateYBottom
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@didNotHitHead:
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lda characterYSpeedFrac
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clc
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adc #GRAVITY
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sta characterYSpeedFrac
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bcc @updateYBottom
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dec characterYSpeed
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bne @updateYBottom
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lda #CHAR_STATE_FALLING
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sta characterState
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@updateYBottom: ; Need to calculate characterYBottom now from characterY
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lda characterY
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clc
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adc #CHAR_HEIGHT
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sta characterYBottom
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rts
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; Locals
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gridTop: .BYTE $00
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gridBottom: .BYTE $00
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.endproc
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.proc updateCharacterPosFalling
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; For falling, we need to calculate the bottom first and check
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; for collisions
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lda characterYBottom
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clc
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adc characterYSpeed
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cmp gridY
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bmi @didNotLand
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lda gridY
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sta characterYBottom
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cmp #MAXY
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bcc @loop
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lda #MAXY
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sta characterYBottom
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sec
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sbc #CHAR_HEIGHT
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sta characterY
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jsr gameOver
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rts
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@loop:
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jsr nextGridAtCharacter
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bcs @didNotLand
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ldy #3
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lda (ZPADDR6),y
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sta gridBottom
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ldy #2
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lda (ZPADDR6),y
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cmp characterOldYBottom
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bcs @wasAboveToStart
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lda characterYBottom
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sec
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sbc #CHAR_HEIGHT
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cmp gridBottom
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bcc @dropToBottomOfGrid
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jmp @loop
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@wasAboveToStart:
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cmp characterYBottom
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beq @L1
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bcs @loop
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@L1:
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sta characterYBottom
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lda #0
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sta characterYSpeed
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@ -388,8 +708,13 @@ lastButtonState: .BYTE $00
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sta characterState
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jmp @updateY
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@didNotLand:
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@dropToBottomOfGrid:
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lda gridBottom
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sec
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sbc #CHAR_HEIGHT
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sta characterYBottom
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@didNotLand:
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lda characterYSpeedFrac
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clc
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adc #GRAVITY
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@ -404,42 +729,8 @@ lastButtonState: .BYTE $00
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sta characterY
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rts
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@jumping:
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; For jumping, we need to calculate the top first and check
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; for collisions
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lda characterY
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clc
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adc characterYSpeed
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cmp gridY ; TODO - fix this compare
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bmi @didNotHitHead
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lda gridY
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sta characterY
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lda #0
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sta characterYSpeed
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sta characterYSpeedFrac
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sta characterNumJumps
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lda #CHAR_STATE_FALLING
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sta characterState
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jmp @updateYBottom
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@didNotHitHead:
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sta characterY
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lda characterYSpeedFrac
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clc
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adc #GRAVITY
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sta characterYSpeedFrac
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bcc @updateYBottom
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inc characterYSpeed
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bmi @updateYBottom
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lda #CHAR_STATE_FALLING
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sta characterState
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@updateYBottom: ; Need to calculate characterYBottom now from characterY
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lda characterY
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clc
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adc #CHAR_HEIGHT
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sta characterYBottom
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rts
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; Locals
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gridBottom: .BYTE $00
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.endproc
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@ -461,6 +752,7 @@ lastButtonState: .BYTE $00
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.proc updateCharacterColour
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lda KBD
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bpl @return
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ldx KBDSTRB
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cmp #$9b ; Compare to Escape
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beq @quit
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cmp #$d1 ; Compare to 'Q'
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@ -468,7 +760,6 @@ lastButtonState: .BYTE $00
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cmp #$f1 ; Compare to 'q'
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beq @quit
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lda KBDSTRB
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lda characterColour
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cmp #COL_VIOLET
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beq @changeToGreen
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@ -482,7 +773,6 @@ lastButtonState: .BYTE $00
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rts
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@quit:
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lda KBDSTRB
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lda #$01
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sta shouldQuit
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@ -535,7 +825,7 @@ lastButtonState: .BYTE $00
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sty yPos
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ldy #CHAR_XPOS
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lda evenVal
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lda oddVal
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and (ZPADDR1,x)
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sta (ZPADDR0),y
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inc ZPADDR1
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@ -544,7 +834,7 @@ lastButtonState: .BYTE $00
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@doNotIncHiByte1:
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iny
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lda oddVal
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lda evenVal
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and (ZPADDR1,x)
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sta (ZPADDR0),y
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inc ZPADDR1
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@ -581,17 +871,16 @@ yPos: .BYTE $00
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@loop:
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ldy #$1
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lda (LEVELADDR),y
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cmp gridXPos
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bpl @return
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lda gridXPos
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cmp (LEVELADDR),y
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bcc @return
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; At this point, we know that this grid is not visible
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; Check to see if the start of the next grid is left justified
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; or off screen.
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ldy #LEVEL_STRUCT_SIZE
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lda (LEVELADDR),y
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cmp gridXPos
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bpl @return
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cmp (LEVELADDR),y
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bcc @return
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; At this point, we know that the gridXPos is at the start of
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; the next grid or maybe past the start. Move the LEVELADDR
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@ -651,7 +940,7 @@ yPos: .BYTE $00
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; onto screen coords.
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bcs @overflow
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cmp gridXPos
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bmi @nextGrid
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bcc @nextGrid
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sec
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@overflow:
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sbc gridXPos
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@ -679,7 +968,7 @@ yPos: .BYTE $00
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beq @gridRightZeroSpecialCase
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dex
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cmp #$3
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bpl @L1
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bcs @L1
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dex
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jmp @L1
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@gridRightZeroSpecialCase:
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@ -687,7 +976,7 @@ yPos: .BYTE $00
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bne @nextGrid
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@L1:
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cpx #MAXXBYTE
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bmi @rightIsNotOffScreen
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bcc @rightIsNotOffScreen
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ldx #MAXXBYTE
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@rightIsNotOffScreen:
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stx gridScreenRight
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@ -703,9 +992,9 @@ yPos: .BYTE $00
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jsr drawGrid
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;@debugLoop:
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; lda KBD
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; bpl @debugLoop
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; lda KBDSTRB
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; lda KBD
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; bpl @debugLoop
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; lda KBDSTRB
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@nextGrid:
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lda ZPADDR6
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@ -716,12 +1005,18 @@ yPos: .BYTE $00
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@doNotIncHiByte:
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sta ZPADDR6
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ldy #$1
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lda (ZPADDR6),y
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beq @return
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ldy #$0
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lda gridLeft
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clc
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adc (ZPADDR6),y
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cmp screenRight
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bpl @return
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beq @L2
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bcs @return
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@L2:
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sta gridLeft
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jmp @gridLoop
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@ -787,6 +1082,15 @@ gridLeft: .BYTE $00
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and oddGrid,x
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sta oddGridVal
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ldy #LEVEL_STRUCT_SIZE+1
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lda (ZPADDR6),y
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bne @notLastGrid
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lda evenVal
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sta evenGridVal
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lda oddVal
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sta oddGridVal
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@notLastGrid:
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lda evenGridRight,x
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and evenVal
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sta evenRightCap
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@ -795,12 +1099,15 @@ gridLeft: .BYTE $00
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sta oddRightCap
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ldy gridScreenLeft
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beq @nextGridComponent
|
||||
beq @L1
|
||||
cpx #$0
|
||||
beq @nextGridComponent
|
||||
|
||||
beq @L1
|
||||
jmp @L2
|
||||
@L1:
|
||||
jmp @nextGridComponent
|
||||
; Draw the left cap
|
||||
|
||||
@L2:
|
||||
lda evenGridLeft,x
|
||||
and evenVal
|
||||
sta evenLeftCap
|
||||
@ -821,13 +1128,18 @@ gridLeft: .BYTE $00
|
||||
and #$01
|
||||
bne @leftCapOdd1
|
||||
|
||||
lda evenLeftCap
|
||||
and evenGridVal
|
||||
tax
|
||||
lda evenLeftMask
|
||||
and (ZPADDR0),y
|
||||
ora evenLeftCap
|
||||
ldx evenGridVal
|
||||
jmp @nextLeftCapComponent
|
||||
|
||||
@leftCapOdd1:
|
||||
lda oddLeftCap
|
||||
and oddGridVal
|
||||
tax
|
||||
lda oddLeftMask
|
||||
and (ZPADDR0),y
|
||||
ora oddLeftCap
|
||||
@ -842,18 +1154,22 @@ gridLeft: .BYTE $00
|
||||
and #$01
|
||||
bne @leftCapOdd2
|
||||
|
||||
lda evenLeftCap
|
||||
and evenGridVal
|
||||
tax
|
||||
lda evenLeftMask
|
||||
and (ZPADDR0),y
|
||||
ora evenLeftCap
|
||||
ldx evenGridVal
|
||||
jsr drawGridComponent
|
||||
jmp @drawBodyComponents
|
||||
|
||||
@leftCapOdd2:
|
||||
lda oddLeftCap
|
||||
and oddGridVal
|
||||
tax
|
||||
lda oddLeftMask
|
||||
and (ZPADDR0),y
|
||||
ora oddLeftCap
|
||||
ldx oddGridVal
|
||||
jsr drawGridComponent
|
||||
|
||||
@drawBodyComponents:
|
||||
@ -938,90 +1254,6 @@ oddRightCap: .BYTE $00
|
||||
.endproc
|
||||
|
||||
|
||||
|
||||
.proc drawGridOld
|
||||
ldy gridY
|
||||
lda loAddrs,y
|
||||
sta ZPADDR0
|
||||
lda page1HiAddrs,y
|
||||
sta ZPADDR0+1
|
||||
|
||||
iny
|
||||
lda loAddrs,y
|
||||
sta ZPADDR1
|
||||
lda page1HiAddrs,y
|
||||
sta ZPADDR1+1
|
||||
|
||||
iny
|
||||
lda loAddrs,y
|
||||
sta ZPADDR2
|
||||
lda page1HiAddrs,y
|
||||
sta ZPADDR2+1
|
||||
|
||||
iny
|
||||
lda loAddrs,y
|
||||
sta ZPADDR3
|
||||
lda page1HiAddrs,y
|
||||
sta ZPADDR3+1
|
||||
|
||||
iny
|
||||
lda loAddrs,y
|
||||
sta ZPADDR4
|
||||
lda page1HiAddrs,y
|
||||
sta ZPADDR4+1
|
||||
|
||||
iny
|
||||
lda loAddrs,y
|
||||
sta ZPADDR5
|
||||
lda page1HiAddrs,y
|
||||
sta ZPADDR5+1
|
||||
|
||||
ldx gridXShift
|
||||
ldy gridColour
|
||||
lda colourEvenLookup,y
|
||||
sta evenVal
|
||||
and evenGrid,x
|
||||
sta evenGridVal
|
||||
lda colourOddLookup,y
|
||||
sta oddVal
|
||||
and oddGrid,x
|
||||
sta oddGridVal
|
||||
|
||||
ldy #0
|
||||
@L1:
|
||||
lda evenVal
|
||||
sta (ZPADDR0),y
|
||||
sta (ZPADDR5),y
|
||||
lda evenGridVal
|
||||
sta (ZPADDR1),y
|
||||
sta (ZPADDR2),y
|
||||
sta (ZPADDR3),y
|
||||
sta (ZPADDR4),y
|
||||
|
||||
iny
|
||||
lda oddVal
|
||||
sta (ZPADDR0),y
|
||||
sta (ZPADDR5),y
|
||||
lda oddGridVal
|
||||
sta (ZPADDR1),y
|
||||
sta (ZPADDR2),y
|
||||
sta (ZPADDR3),y
|
||||
sta (ZPADDR4),y
|
||||
iny
|
||||
cpy #MAXXBYTE
|
||||
bne @L1
|
||||
|
||||
rts
|
||||
|
||||
; Locals
|
||||
evenVal: .BYTE $00
|
||||
oddVal: .BYTE $00
|
||||
evenGridVal: .BYTE $00
|
||||
oddGridVal: .BYTE $00
|
||||
|
||||
.endproc
|
||||
|
||||
|
||||
.proc clearScreen
|
||||
ldx #0
|
||||
ldy #0
|
||||
@ -1193,23 +1425,22 @@ characterBitmap3:
|
||||
.BYTE $0c, $00
|
||||
|
||||
characterBitmapLo:
|
||||
.LOBYTES characterBitmap1, characterBitmap2, characterBitmap3
|
||||
.LOBYTES characterBitmap3, characterBitmap2, characterBitmap1
|
||||
|
||||
characterBitmapHi:
|
||||
.HIBYTES characterBitmap1, characterBitmap2, characterBitmap3
|
||||
.HIBYTES characterBitmap3, characterBitmap2, characterBitmap1
|
||||
|
||||
characterColour: .BYTE COL_VIOLET
|
||||
characterBitmap: .BYTE $00
|
||||
characterY: .BYTE GRID_YPOS-CHAR_HEIGHT
|
||||
characterYBottom: .BYTE GRID_YPOS
|
||||
characterOldY: .BYTE GRID_YPOS-CHAR_HEIGHT
|
||||
characterOldYBottom: .BYTE GRID_YPOS
|
||||
characterState: .BYTE CHAR_STATE_NONE
|
||||
characterY: .BYTE 0
|
||||
characterYBottom: .BYTE CHAR_HEIGHT
|
||||
characterOldY: .BYTE 0
|
||||
characterOldYBottom: .BYTE CHAR_HEIGHT
|
||||
characterState: .BYTE CHAR_STATE_FALLING
|
||||
characterNumJumps: .BYTE $00
|
||||
characterYSpeed: .BYTE $00
|
||||
characterYSpeedFrac: .BYTE $00
|
||||
|
||||
gridColour: .BYTE COL_VIOLET
|
||||
gridY: .BYTE GRID_YPOS
|
||||
gridXShift: .BYTE $00
|
||||
gridXPos: .BYTE $00
|
||||
@ -1218,7 +1449,7 @@ gridScreenRight: .BYTE $00
|
||||
|
||||
shouldQuit: .BYTE $00
|
||||
|
||||
level: .BYTE $00
|
||||
level: .BYTE $0
|
||||
|
||||
; A level consists of the following for each grid:
|
||||
; Byte 0 - Offset of the start of this grid from the previous grid's start
|
||||
@ -1228,31 +1459,36 @@ level: .BYTE $00
|
||||
; Byte 4 - Grid colour
|
||||
; The end of a level has a grid width of 0
|
||||
level1:
|
||||
.BYTE 0, 200, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 210, 100, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 110, 100, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 100, 30, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 4, 10, 100, 100+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 50, 10, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 30, 10, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 30, 10, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 30, 100, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 120, 100, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 120, 100, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 120, 100, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 120, 100, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 120, 100, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 120, 100, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 120, 100, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 120, $00, $00, $00, $00
|
||||
.BYTE 0, 80, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 90, 80, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 90, 80, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 90, 40, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 40, $00, $00, $00, $00
|
||||
|
||||
level2:
|
||||
.BYTE $00, 100, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE $00, $00, $00, $00, $00
|
||||
.BYTE 0, 80, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 90, 80, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 90, 80, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 90, 40, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 40, $00, $00, $00, $00
|
||||
|
||||
level3:
|
||||
.BYTE 0, 80, 80, 80+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 60, 80, 100, 100+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 60, 80, 120, 120+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 60, 40, 140, 140+GRID_HEIGHT, COL_GREEN
|
||||
.BYTE 40, $00, $00, $00, $00
|
||||
|
||||
level4:
|
||||
.BYTE 0, 80, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 60, 80, 120, 120+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 60, 80, 140, 140+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 60, 40, 120, 120+GRID_HEIGHT, COL_VIOLET
|
||||
.BYTE 40, $00, $00, $00, $00
|
||||
|
||||
levelsLo:
|
||||
.LOBYTES level1, level2, 0
|
||||
.LOBYTES level1, level2, level3, level4, 0
|
||||
|
||||
levelsHi:
|
||||
.HIBYTES level1, level2, 0
|
||||
.HIBYTES level1, level2, level3, level4, 0
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user