mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-21 23:30:58 +00:00
588 lines
12 KiB
Plaintext
588 lines
12 KiB
Plaintext
EVENT__start = 1
|
|
EVENT__postframe = 1
|
|
EVENT__preframe = 1
|
|
EVENT__kernel = 1
|
|
EVENT__scanline = 1
|
|
EVENT__joyleft = 1
|
|
EVENT__joyright = 1
|
|
EVENT__joyup = 1
|
|
EVENT__joydown = 1
|
|
EVENT__prekernel = 1
|
|
EVENT__SetHorizPos = 1
|
|
.scope Main
|
|
.zeropage
|
|
Sprite_bitmap_b0:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
HasColormap_colormap_b0:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
HasXpos_xpos_b0:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
HasYpos_ypos_b0:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
SpriteSlot_sprite_b0:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
TEMP:
|
|
Kernel2Sprite__2__tmp:
|
|
Joystick__3__tmp:
|
|
SpriteHider__9__tmp:
|
|
.res 1
|
|
SpriteShuffler__8__tmp:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.code
|
|
KernelSection_lines_b0:
|
|
.byte 192
|
|
BGColor_bgcolor_b0:
|
|
.byte 162
|
|
Bitmap_bitmapdata_b0:
|
|
.byte <(Bitmap_bitmapdata_e1_b0+31)
|
|
.byte <(Bitmap_bitmapdata_e2_b0+31)
|
|
Bitmap_bitmapdata_b8:
|
|
.byte >(Bitmap_bitmapdata_e1_b0+31)
|
|
.byte >(Bitmap_bitmapdata_e2_b0+31)
|
|
Bitmap_bitmapdata_e1_b0:
|
|
.byte 1
|
|
.byte 1
|
|
.byte 3
|
|
.byte 7
|
|
.byte 15
|
|
.byte 31
|
|
.byte 63
|
|
.byte 127
|
|
.byte 0
|
|
Bitmap_height_b0:
|
|
.byte 8
|
|
.byte 8
|
|
Bitmap_bitmapdata_e2_b0:
|
|
.byte 24
|
|
.byte 62
|
|
.byte 255
|
|
.byte 255
|
|
.byte 255
|
|
.byte 255
|
|
.byte 62
|
|
.byte 24
|
|
.byte 0
|
|
Colormap_colormapdata_b0:
|
|
.byte <(Colormap_colormapdata_e3_b0+31)
|
|
Colormap_colormapdata_b8:
|
|
.byte >(Colormap_colormapdata_e3_b0+31)
|
|
Colormap_colormapdata_e3_b0:
|
|
.byte 2
|
|
.byte 4
|
|
.byte 6
|
|
.byte 8
|
|
.byte 10
|
|
.byte 12
|
|
.byte 14
|
|
.byte 14
|
|
.byte 14
|
|
Sprite_plyrflags_b0:
|
|
.byte 0
|
|
.byte 3
|
|
.byte 2
|
|
.byte 0
|
|
Main__INITDATA:
|
|
.byte 1
|
|
.byte 0
|
|
.byte 1
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 50
|
|
.byte 100
|
|
.byte 80
|
|
.byte 40
|
|
.byte 150
|
|
.byte 60
|
|
.byte 90
|
|
.byte 150
|
|
.byte 0
|
|
.byte 1
|
|
.byte 2
|
|
.byte 3
|
|
__Start:
|
|
|
|
;;; start action Init__main_init__1
|
|
|
|
.include "vcs-ca65.h"
|
|
.macpack longbranch
|
|
.define PAL 0
|
|
.segment "STARTUP"
|
|
__NMI:
|
|
__Reset:
|
|
__BRK:
|
|
CLEAN_START
|
|
|
|
ldy #20
|
|
: lda Main__INITDATA-1,y
|
|
sta Sprite_bitmap_b0-1,y
|
|
dey
|
|
bne :-
|
|
|
|
;;; start action FrameLoop__start__3
|
|
|
|
|
|
FrameLoop__start__4__NextFrame:
|
|
FRAME_END
|
|
|
|
FRAME_START
|
|
|
|
;;; start action Kernel2Sprite__preframe__5
|
|
|
|
; TODOO: can store KLINES in memory?
|
|
.define KLINES #192
|
|
.define KPAD 32
|
|
; set height to zero in case no sprites
|
|
lda #0
|
|
sta Kernel2Sprite__2__tmp+8
|
|
sta Kernel2Sprite__2__tmp+9
|
|
|
|
;;; end action Kernel2Sprite__preframe__5
|
|
|
|
;;; start action Kernel2Sprite__preframe__8
|
|
|
|
ldy #0
|
|
Kernel2Sprite__preframe__9____each:
|
|
ldx SpriteSlot_sprite_b0,y
|
|
|
|
; set player object flags
|
|
lda Sprite_plyrflags_b0,x
|
|
sta NUSIZ0,y
|
|
sta REFP0,y
|
|
; calculate screen height - ypos
|
|
lda KLINES
|
|
clc
|
|
adc KPAD
|
|
sec
|
|
sbc HasYpos_ypos_b0,x
|
|
sta Kernel2Sprite__2__tmp+11
|
|
; calculate bitmap pointer
|
|
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!"
|
|
.endscope
|
|
Main__Start = Main::__Start |