;rocky wrench projectile
;by smkdan
DIR = $03
PROPRAM = $04
TEMP = $09
SPEED dcb $10,$F0 ;yeah
dcb "INIT"
RTL
dcb "MAIN"
PHB
PHK
PLB
JSR Run
PLB
RTL
Run
JSR SUB_OFF_SCREEN_X0
JSR GET_DRAW_INFO
JSR GFX ;draw sprite
LDA $14C8,x
CMP #$08
BNE Return
LDA $9D ;locked sprites?
BNE Return
LDA $15D0,x ;yoshi eating?
BNE Return
LDY $157C,x
LDA SPEED,y
STA $B6,x
JSL $018022 ;no x gravity
JSL $01A7DC ;mario interact
Return
RTS
;=====
TILEMAP dcb $EC,$EE,$EE,$EC
PROP dcb $00,$00,$80,$40
GFX
LDA $15F6,x ;properties...
STA PROPRAM
LDA $14 ;frame counter
LSR A
LSR A ;every 4th frame
AND #$03 ;3 frames
STA TEMP ;frame index
OAM_Loop
LDA $00
STA $0300,y ;xpos
LDA $01
STA $0301,y ;ypos
LDX TEMP
LDA TILEMAP,x
STA $0302,y ;tilemap
LDA PROPRAM
ORA PROP,x ;properties
STA $0303,y
LDX $15E9 ;restore sprite index
LDY #$02 ;16x16
LDA #$00 ;1 tile
JSL $01B7B3 ;reserve
RTS
;=================
;BORROWED ROUTINES
;=================
;GET_DRAW_INFO
;==============
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; $B760 - graphics routine helper - shared
; sets off screen flags and sets index to OAM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
SPR_T1 dcb $0C,$1C
SPR_T2 dcb $01,$02
GET_DRAW_INFO STZ $186C,x ; reset sprite offscreen flag, vertical
STZ $15A0,x ; reset sprite offscreen flag, horizontal
LDA $E4,x ; \
CMP $1A ; | set horizontal offscreen if necessary
LDA $14E0,x ; |
SBC $1B ; |
BEQ ON_SCREEN_X ; |
INC $15A0,x ; /
ON_SCREEN_X LDA $14E0,x ; \
XBA ; |
LDA $E4,x ; |
REP #$20 ; |
SEC ; |
SBC $1A ; | mark sprite invalid if far enough off screen
CLC ; |
ADC.W #$0040 ; |
CMP.W #$0180 ; |
SEP #$20 ; |
ROL A ; |
AND #$01 ; |
STA $15C4,x ; /
BNE INVALID ;
LDY #$00 ; \ set up loop:
LDA $1662,x ; |
AND #$20 ; | if not smushed (1662 & 0x20), go through loop twice
BEQ ON_SCREEN_LOOP ; | else, go through loop once
INY ; /
ON_SCREEN_LOOP LDA $D8,x ; \
CLC ; | set vertical offscreen if necessary
ADC SPR_T1,y ; |
PHP ; |
CMP $1C ; | (vert screen boundry)
ROL $00 ; |
PLP ; |
LDA $14D4,x ; |
ADC #$00 ; |
LSR $00 ; |
SBC $1D ; |
BEQ ON_SCREEN_Y ; |
LDA $186C,x ; | (vert offscreen)
ORA SPR_T2,y ; |
STA $186C,x ; |
ON_SCREEN_Y DEY ; |
BPL ON_SCREEN_LOOP ; /
LDY $15EA,x ; get offset to sprite OAM
LDA $E4,x ; \
SEC ; |
SBC $1A ; | $00 = sprite x position relative to screen boarder
STA $00 ; /
LDA $D8,x ; \
SEC ; |
SBC $1C ; | $01 = sprite y position relative to screen boarder
STA $01 ; /
RTS ; return
INVALID PLA ; \ return from *main gfx routine* subroutine...
PLA ; | ...(not just this subroutine)
RTS ; /
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; SUB_OFF_SCREEN
; This subroutine deals with sprites that have moved off screen
; It is adapted from the subroutine at $01AC0D
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
SPR_T12 dcb $40,$B0
SPR_T13 dcb $01,$FF
SPR_T14 dcb $30,$C0,$A0,$C0,$A0,$F0,$60,$90 ;bank 1 sizes
dcb $30,$C0,$A0,$80,$A0,$40,$60,$B0 ;bank 3 sizes
SPR_T15 dcb $01,$FF,$01,$FF,$01,$FF,$01,$FF ;bank 1 sizes
dcb $01,$FF,$01,$FF,$01,$00,$01,$FF ;bank 3 sizes
SUB_OFF_SCREEN_X1 LDA #$02 ; \ entry point of routine determines value of $03
BRA STORE_03 ; | (table entry to use on horizontal levels)
SUB_OFF_SCREEN_X2 LDA #$04 ; |
BRA STORE_03 ; |
SUB_OFF_SCREEN_X3 LDA #$06 ; |
BRA STORE_03 ; |
SUB_OFF_SCREEN_X4 LDA #$08 ; |
BRA STORE_03 ; |
SUB_OFF_SCREEN_X5 LDA #$0A ; |
BRA STORE_03 ; |
SUB_OFF_SCREEN_X6 LDA #$0C ; |
BRA STORE_03 ; |
SUB_OFF_SCREEN_X7 LDA #$0E ; |
STORE_03 STA $03 ; |
BRA START_SUB ; |
SUB_OFF_SCREEN_X0 STZ $03 ; /
START_SUB JSR SUB_IS_OFF_SCREEN ; \ if sprite is not off screen, return
BEQ RETURN_35 ; /
LDA $5B ; \ goto VERTICAL_LEVEL if vertical level
AND #$01 ; |
BNE VERTICAL_LEVEL ; /
LDA $D8,x ; \
CLC ; |
ADC #$50 ; | if the sprite has gone off the bottom of the level...
LDA $14D4,x ; | (if adding 0x50 to the sprite y position would make the high byte >= 2)
ADC #$00 ; |
CMP #$02 ; |
BPL ERASE_SPRITE ; / ...erase the sprite
LDA $167A,x ; \ if "process offscreen" flag is set, return
AND #$04 ; |
BNE RETURN_35 ; /
LDA $13 ;A:8A00 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdiZcHC:0756 VC:176 00 FL:205
AND #$01 ;A:8A01 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizcHC:0780 VC:176 00 FL:205
ORA $03 ;A:8A01 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizcHC:0796 VC:176 00 FL:205
STA $01 ;A:8A01 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizcHC:0820 VC:176 00 FL:205
TAY ;A:8A01 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizcHC:0844 VC:176 00 FL:205
LDA $1A ;A:8A01 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizcHC:0858 VC:176 00 FL:205
CLC ;A:8A00 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdiZcHC:0882 VC:176 00 FL:205
ADC SPR_T14,y ;A:8A00 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdiZcHC:0896 VC:176 00 FL:205
ROL $00 ;A:8AC0 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:eNvMXdizcHC:0928 VC:176 00 FL:205
CMP $E4,x ;A:8AC0 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:eNvMXdizCHC:0966 VC:176 00 FL:205
PHP ;A:8AC0 X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizCHC:0996 VC:176 00 FL:205
LDA $1B ;A:8AC0 X:0009 Y:0001 D:0000 DB:01 S:01F0 P:envMXdizCHC:1018 VC:176 00 FL:205
LSR $00 ;A:8A00 X:0009 Y:0001 D:0000 DB:01 S:01F0 P:envMXdiZCHC:1042 VC:176 00 FL:205
ADC SPR_T15,y ;A:8A00 X:0009 Y:0001 D:0000 DB:01 S:01F0 P:envMXdizcHC:1080 VC:176 00 FL:205
PLP ;A:8AFF X:0009 Y:0001 D:0000 DB:01 S:01F0 P:eNvMXdizcHC:1112 VC:176 00 FL:205
SBC $14E0,x ;A:8AFF X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizCHC:1140 VC:176 00 FL:205
STA $00 ;A:8AFF X:0009 Y:0001 D:0000 DB:01 S:01F1 P:eNvMXdizCHC:1172 VC:176 00 FL:205
LSR $01 ;A:8AFF X:0009 Y:0001 D:0000 DB:01 S:01F1 P:eNvMXdizCHC:1196 VC:176 00 FL:205
BCC SPR_L31 ;A:8AFF X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdiZCHC:1234 VC:176 00 FL:205
EOR #$80 ;A:8AFF X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdiZCHC:1250 VC:176 00 FL:205
STA $00 ;A:8A7F X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizCHC:1266 VC:176 00 FL:205
SPR_L31 LDA $00 ;A:8A7F X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizCHC:1290 VC:176 00 FL:205
BPL RETURN_35 ;A:8A7F X:0009 Y:0001 D:0000 DB:01 S:01F1 P:envMXdizCHC:1314 VC:176 00 FL:205
ERASE_SPRITE LDA $14C8,x ; \ if sprite status < 8, permanently erase sprite
CMP #$08 ; |
BCC KILL_SPRITE ; /
LDY $161A,x ;A:FF08 X:0007 Y:0001 D:0000 DB:01 S:01F3 P:envMXdiZCHC:1108 VC:059 00 FL:2878
CPY #$FF ;A:FF08 X:0007 Y:0000 D:0000 DB:01 S:01F3 P:envMXdiZCHC:1140 VC:059 00 FL:2878
BEQ KILL_SPRITE ;A:FF08 X:0007 Y:0000 D:0000 DB:01 S:01F3 P:envMXdizcHC:1156 VC:059 00 FL:2878
LDA #$00 ;A:FF08 X:0007 Y:0000 D:0000 DB:01 S:01F3 P:envMXdizcHC:1172 VC:059 00 FL:2878
STA $1938,y ;A:FF00 X:0007 Y:0000 D:0000 DB:01 S:01F3 P:envMXdiZcHC:1188 VC:059 00 FL:2878
KILL_SPRITE STZ $14C8,x ; erase sprite
RETURN_35 RTS ; return
VERTICAL_LEVEL LDA $167A,x ; \ if "process offscreen" flag is set, return
AND #$04 ; |
BNE RETURN_35 ; /
LDA $13 ; \
LSR A ; |
BCS RETURN_35 ; /
LDA $E4,x ; \
CMP #$00 ; | if the sprite has gone off the side of the level...
LDA $14E0,x ; |
SBC #$00 ; |
CMP #$02 ; |
BCS ERASE_SPRITE ; / ...erase the sprite
LDA $13 ;A:0000 X:0009 Y:00E4 D:0000 DB:01 S:01F3 P:eNvMXdizcHC:1218 VC:250 00 FL:5379
LSR A ;A:0016 X:0009 Y:00E4 D:0000 DB:01 S:01F3 P:envMXdizcHC:1242 VC:250 00 FL:5379
AND #$01 ;A:000B X:0009 Y:00E4 D:0000 DB:01 S:01F3 P:envMXdizcHC:1256 VC:250 00 FL:5379
STA $01 ;A:0001 X:0009 Y:00E4 D:0000 DB:01 S:01F3 P:envMXdizcHC:1272 VC:250 00 FL:5379
TAY ;A:0001 X:0009 Y:00E4 D:0000 DB:01 S:01F3 P:envMXdizcHC:1296 VC:250 00 FL:5379
LDA $1C ;A:001A X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNvMXdizcHC:0052 VC:251 00 FL:5379
CLC ;A:00BD X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNvMXdizcHC:0076 VC:251 00 FL:5379
ADC SPR_T12,y ;A:00BD X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNvMXdizcHC:0090 VC:251 00 FL:5379
ROL $00 ;A:006D X:0009 Y:0001 D:0000 DB:01 S:01F3 P:enVMXdizCHC:0122 VC:251 00 FL:5379
CMP $D8,x ;A:006D X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNVMXdizcHC:0160 VC:251 00 FL:5379
PHP ;A:006D X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNVMXdizcHC:0190 VC:251 00 FL:5379
LDA.W $001D ;A:006D X:0009 Y:0001 D:0000 DB:01 S:01F2 P:eNVMXdizcHC:0212 VC:251 00 FL:5379
LSR $00 ;A:0000 X:0009 Y:0001 D:0000 DB:01 S:01F2 P:enVMXdiZcHC:0244 VC:251 00 FL:5379
ADC SPR_T13,y ;A:0000 X:0009 Y:0001 D:0000 DB:01 S:01F2 P:enVMXdizCHC:0282 VC:251 00 FL:5379
PLP ;A:0000 X:0009 Y:0001 D:0000 DB:01 S:01F2 P:envMXdiZCHC:0314 VC:251 00 FL:5379
SBC $14D4,x ;A:0000 X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNVMXdizcHC:0342 VC:251 00 FL:5379
STA $00 ;A:00FF X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNvMXdizcHC:0374 VC:251 00 FL:5379
LDY $01 ;A:00FF X:0009 Y:0001 D:0000 DB:01 S:01F3 P:eNvMXdizcHC:0398 VC:251 00 FL:5379
BEQ SPR_L38 ;A:00FF X:0009 Y:0001 D:0000 DB:01 S:01F3 P:envMXdizcHC:0422 VC:251 00 FL:5379
EOR #$80 ;A:00FF X:0009 Y:0001 D:0000 DB:01 S:01F3 P:envMXdizcHC:0438 VC:251 00 FL:5379
STA $00 ;A:007F X:0009 Y:0001 D:0000 DB:01 S:01F3 P:envMXdizcHC:0454 VC:251 00 FL:5379
SPR_L38 LDA $00 ;A:007F X:0009 Y:0001 D:0000 DB:01 S:01F3 P:envMXdizcHC:0478 VC:251 00 FL:5379
BPL RETURN_35 ;A:007F X:0009 Y:0001 D:0000 DB:01 S:01F3 P:envMXdizcHC:0502 VC:251 00 FL:5379
BMI ERASE_SPRITE ;A:8AFF X:0002 Y:0000 D:0000 DB:01 S:01F3 P:eNvMXdizcHC:0704 VC:184 00 FL:5490
SUB_IS_OFF_SCREEN LDA $15A0,x ; \ if sprite is on screen, accumulator = 0
ORA $186C,x ; |
RTS ; / return