stx Kernel2Sprite__2__tmp+12 ; save X (Sprite index)
lda Sprite_bitmap_b0,x ; deref bitmap
tax
lda Bitmap_bitmapdata_b0,x
sec
sbc Kernel2Sprite__2__tmp+11
sta Kernel2Sprite__2__tmp+0,y ; Y = sprite slot index
lda Bitmap_bitmapdata_b8,x
sbc #0
sta Kernel2Sprite__2__tmp+2,y
; get bitmap height
lda Bitmap_height_b0,x
sta Kernel2Sprite__2__tmp+8,y
; calculate colormap pointer
ldx Kernel2Sprite__2__tmp+12 ; restore X
lda HasColormap_colormap_b0,x ; deref colormap
tax
lda Colormap_colormapdata_b0,x
sec
sbc Kernel2Sprite__2__tmp+11
sta Kernel2Sprite__2__tmp+4,y
lda Colormap_colormapdata_b8,x
sbc #0
sta Kernel2Sprite__2__tmp+6,y
; save ypos
ldx Kernel2Sprite__2__tmp+12 ; restore X
lda HasYpos_ypos_b0,x
sta Kernel2Sprite__2__tmp+10,y
iny
cpy #2
jne Kernel2Sprite__preframe__9____each
Kernel2Sprite__preframe__9____exit:
;;; end action Kernel2Sprite__preframe__8
;;; start action Kernel2Sprite__preframe__11
; shuffle pointers into (MSB, LSB) byte order
; L0 L1 H0 H1 -> L0 H0 L1 H1
lda Kernel2Sprite__2__tmp+1
ldy Kernel2Sprite__2__tmp+2
sty Kernel2Sprite__2__tmp+1
sta Kernel2Sprite__2__tmp+2
lda Kernel2Sprite__2__tmp+5
ldy Kernel2Sprite__2__tmp+6
sty Kernel2Sprite__2__tmp+5
sta Kernel2Sprite__2__tmp+6
;;; end action Kernel2Sprite__preframe__11
;;; start action Kernel2Sprite__preframe__13
lda #162
sta COLUBK
;;; end action Kernel2Sprite__preframe__13
;;; start action Kernel2Sprite__preframe__16
;;; end action Kernel2Sprite__preframe__16
;;; start action SetXPos__preframe__17
ldy #0
SetXPos__preframe__18____each:
ldx SpriteSlot_sprite_b0,y
lda HasXpos_xpos_b0,x
jsr SetHorizPos__SetHorizPos__20
iny
cpy #2
jne SetXPos__preframe__18____each
SetXPos__preframe__18____exit:
;;; end action SetXPos__preframe__17
;;; start action SetXPos__preframe__22
;;; end action SetXPos__preframe__22
;;; start action SetXPos__prekernel__23
sta WSYNC
sta HMOVE
SLEEPR 24
sta HMCLR
;;; end action SetXPos__prekernel__23
KERNEL_START
;;; start action Kernel2Sprite__kernel__25
ldy #0
sty VDELP0
iny
sty VDELP1
;;; end action Kernel2Sprite__kernel__25
jsr Kernel2Sprite__kernel__28
;;; start action Kernel2Sprite__kernel__37
lda #0
sta GRP0
sta GRP1
sta GRP0
sta GRP1
;;; end action Kernel2Sprite__kernel__37
KERNEL_END
;;; start action FrameLoop__postframe__39
lsr SWCHB ; test Game Reset switch
bcs FrameLoop__postframe__40__NoStart
FrameLoop__postframe__40__NoStart:
;;; end action FrameLoop__postframe__39
;;; start action Joystick__postframe__41
; 2 control inputs share a single byte, 4 bits each
lda SWCHA
sta Joystick__3__tmp+0
;;; end action Joystick__postframe__41
;;; start action Joystick__postframe__43
ldx #0
Joystick__postframe__44____each:
asl Joystick__3__tmp+0
.ifdef EVENT__joyright
bcs Joystick__postframe__45__SkipMoveRight
;;; start action MoveJoyX__joyright__46
lda HasXpos_xpos_b0,x
clc
adc #1
cmp #150
bcs MoveJoyX__joyright__48__nomove
sta HasXpos_xpos_b0,x
MoveJoyX__joyright__48__nomove:
;;; end action MoveJoyX__joyright__46
Joystick__postframe__45__SkipMoveRight:
.endif
asl Joystick__3__tmp+0
.ifdef EVENT__joyleft
bcs Joystick__postframe__45__SkipMoveLeft
;;; start action MoveJoyX__joyleft__49
lda HasXpos_xpos_b0,x
sec
sbc #1
bcc MoveJoyX__joyleft__51__nomove
sta HasXpos_xpos_b0,x
MoveJoyX__joyleft__51__nomove:
;;; end action MoveJoyX__joyleft__49
Joystick__postframe__45__SkipMoveLeft:
.endif
asl Joystick__3__tmp+0
.ifdef EVENT__joydown
bcs Joystick__postframe__45__SkipMoveDown
;;; start action MoveJoyY__joydown__52
lda HasYpos_ypos_b0,x
clc
adc #1
cmp #220
bcs MoveJoyY__joydown__54__nomove
sta HasYpos_ypos_b0,x
MoveJoyY__joydown__54__nomove:
;;; end action MoveJoyY__joydown__52
Joystick__postframe__45__SkipMoveDown:
.endif
asl Joystick__3__tmp+0
.ifdef EVENT__joyup
bcs Joystick__postframe__45__SkipMoveUp
;;; start action MoveJoyY__joyup__55
lda HasYpos_ypos_b0,x
sec
sbc #1
bcc MoveJoyY__joyup__57__nomove
sta HasYpos_ypos_b0,x
MoveJoyY__joyup__57__nomove:
;;; end action MoveJoyY__joyup__55
Joystick__postframe__45__SkipMoveUp:
.endif
inx
cpx #2
jne Joystick__postframe__44____each
Joystick__postframe__44____exit:
;;; end action Joystick__postframe__43
;;; start action SpriteShuffler__postframe__58
; load two sprite slots at left side of array
lda SpriteSlot_sprite_b0
sta SpriteShuffler__8__tmp+0
lda SpriteSlot_sprite_b0+1
sta SpriteShuffler__8__tmp+1
; move two slots to the left
ldx #0
SpriteShuffler__postframe__60__loop:
lda SpriteSlot_sprite_b0+2,x
sta SpriteSlot_sprite_b0,x
inx
cpx #4-2
bne SpriteShuffler__postframe__60__loop
; store two sprite slots at right side of array
lda SpriteShuffler__8__tmp+0
sta SpriteSlot_sprite_b0+4-2
lda SpriteShuffler__8__tmp+1
sta SpriteSlot_sprite_b0+4-1
;;; end action SpriteShuffler__postframe__58
;;; start action SpriteHider__postframe__61
lda #4-1
sta SpriteHider__9__tmp+0
;;; end action SpriteHider__postframe__61
;;; start action SpriteHider__postframe__64
ldy #0
SpriteHider__postframe__65____each:
ldx SpriteSlot_sprite_b0,y
lda HasYpos_ypos_b0,x
cmp #192
bcc SpriteHider__postframe__66__skip
; swap this sprite slot with slot at end of array
lda SpriteSlot_sprite_b0,y
pha
ldx SpriteHider__9__tmp+0 ; clobbers X, but no longer used
lda SpriteSlot_sprite_b0,x
sta SpriteSlot_sprite_b0,y
pla
sta SpriteSlot_sprite_b0,x
dec SpriteHider__9__tmp+0
SpriteHider__postframe__66__skip:
iny
cpy #2
jne SpriteHider__postframe__65____each
SpriteHider__postframe__65____exit:
;;; end action SpriteHider__postframe__64
jmp FrameLoop__start__4__NextFrame ; loop to next frame
;;; end action FrameLoop__start__3
; start main routine
.segment "VECTORS"
ZeroByte: .byte $00
Return: .byte $60
VecNMI:
VecReset: .word __Reset
VecBRK: .word __BRK
.code
;;; end action Init__main_init__1
.rodata
__ALIGNORIGIN:
.rodata
SetHorizPos__SetHorizPos__20:
; SetHorizPos routine
; A = X coordinate
; Y = player number (0 or 1)
sec ; set carry flag
sta WSYNC ; start a new line
:
sbc #15 ; subtract 15
bcs :- ; branch until negative
eor #7 ; calculate fine offset
asl
asl
asl
asl
sta HMP0,y ; set fine offset
sta RESP0,y ; fix coarse position
sta WSYNC ; won't overrun if X < 150
rts
.assert >(SetHorizPos__SetHorizPos__20) = >(*), error, "SetHorizPos__SetHorizPos__20 crosses a page boundary!"
.assert (* - SetHorizPos__SetHorizPos__20) <= 22, error, .sprintf("SetHorizPos__SetHorizPos__20 does not fit in 22 bytes, it took %d!", (* - SetHorizPos__SetHorizPos__20))
.rodata
Kernel2Sprite__kernel__28:
ldy #192
Kernel2Sprite__kernel__30__LVScan:
;;; start action Kernel2Sprite__scanline__31
; draw player 0
lda Kernel2Sprite__2__tmp+8 ; height
dcp Kernel2Sprite__2__tmp+10 ; ypos
bcs Kernel2Sprite__scanline__32__DoDraw1
lda #0
.byte $2C
Kernel2Sprite__scanline__32__DoDraw1:
lda (Kernel2Sprite__2__tmp+0),y
; .if 0 = 0 ; TODO: configurable?
sta WSYNC
; .endif
sta GRP0
lda (Kernel2Sprite__2__tmp+4),y
sta COLUP0
; draw player 1
lda Kernel2Sprite__2__tmp+9 ; height
dcp Kernel2Sprite__2__tmp+11 ; ypos
bcs Kernel2Sprite__scanline__32__DoDraw2
lda #0
.byte $2C
Kernel2Sprite__scanline__32__DoDraw2:
lda (Kernel2Sprite__2__tmp+2),y
sta GRP1
lda (Kernel2Sprite__2__tmp+6),y
sta COLUP1
;;; end action Kernel2Sprite__scanline__31
;;; start action Kernel2Sprite__scanline__33
;;; end action Kernel2Sprite__scanline__33
dey ; next scanline
;;; start action Kernel2Sprite__scanline__34
; draw player 0
lda Kernel2Sprite__2__tmp+8 ; height
dcp Kernel2Sprite__2__tmp+10 ; ypos
bcs Kernel2Sprite__scanline__35__DoDraw1
lda #0
.byte $2C
Kernel2Sprite__scanline__35__DoDraw1:
lda (Kernel2Sprite__2__tmp+0),y
; .if 1 = 0 ; TODO: configurable?
sta WSYNC
; .endif
sta GRP0
lda (Kernel2Sprite__2__tmp+4),y
sta COLUP0
; draw player 1
lda Kernel2Sprite__2__tmp+9 ; height
dcp Kernel2Sprite__2__tmp+11 ; ypos
bcs Kernel2Sprite__scanline__35__DoDraw2
lda #0
.byte $2C
Kernel2Sprite__scanline__35__DoDraw2:
lda (Kernel2Sprite__2__tmp+2),y
sta GRP1
lda (Kernel2Sprite__2__tmp+6),y
sta COLUP1
;;; end action Kernel2Sprite__scanline__34
;;; start action Kernel2Sprite__scanline__36
;;; end action Kernel2Sprite__scanline__36
dey ; next scanline
bne Kernel2Sprite__kernel__30__LVScan ; repeat until out of lines
rts
.assert >(Kernel2Sprite__kernel__28) = >(*), error, "Kernel2Sprite__kernel__28 crosses a page boundary!"
