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;; Hammer Brother, by mikeyk
;;
;; Description: This guy walks back and forth, throwing hammers at Mario.
;;
;; Uses first extra bit: NO
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; sprite data
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HAMMER_TILE = $6D
TILEMAP dcb $46,$4A,$7F,$00
dcb $46,$5A,$2F,$00
dcb $48,$4A,$7F,$00
dcb $48,$5A,$2F,$00
HORZ_DISP dcb $00,$00,$08
dcb $00,$08,$00
VERT_DISP dcb $F8,$08,$08
TILE_SIZE dcb $02,$00,$00
PROPERTIES dcb $40,$00 ;xyppccct format
SPEED_TABLE dcb $05,$FB ; speed of hammer bro, right, left
TIME_TO_SHOW = $18 ;time to display the boomerang before it is thrown
TIME_TILL_THROW = $28
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; init JSL
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dcb "INIT"
PHY
JSR SUB_GET_DIR
TYA
STA $157C,x
PLY
TXA
AND #$01
ASL A
ASL A
ASL A
ASL A
CLC
ADC #$20
STA $1558,x
;STA $1570,x
RTL
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; main sprite JSL
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dcb "MAIN"
HAMMER_BRO_JSL PHB ; \
PHK ; | main sprite function, just calls local subroutine
PLB ; |
JSR START_HB_CODE ; |
PLB ; |
RTL ; /
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; main sprite routine
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STAR INC $1558,x
RETURN RTS
START_HB_CODE JSR SUB_GFX ; draw hammer bro gfx
LDA $14C8,x ; \ if hammer bro status != 8...
CMP #$02 ; } ... not (killed with spin jump [4] or star[2])
BEQ STAR
CMP #$08
BNE STAR ; / ... return
LDA $9D ; \ if sprites locked...
BNE RETURN ; / ... return
JSR SUB_OFF_SCREEN_HB ; only process hammer bro while on screen
INC $1570,x ; increment number of frames hammer bro has been on screen
LDA $1570,x ; \ calculate which frame to show:
LSR A ; |
LSR A ; |
LSR A ; |
AND #$01 ; | update every 16 cycles if normal
LABEL3 STA $1602,x ; / write frame to show
LDA $1540,x
BEQ DISABLE_NOT_SET
CMP #$01
BNE DISABLE_NOT_SET
LDA $1686,x
AND #$7F
STA $1686,x
DISABLE_NOT_SET
LDA $1558,x ; \ if time until throw < TIME_TO_SHOW
CMP #TIME_TO_SHOW ; |
BCS NO_THROW ; |
INC $1602,x ; | change image (hammer will be displayed)
INC $1602,x ; /
LDA $1558,x ; \ if time until throw = 0
BNE NO_TIME_SET ; |
LDA #TIME_TILL_THROW ; | set the timer
STA $1558,x ; /
NO_TIME_SET CMP #$01 ; \ call the hammer routine if the timer is
BNE NO_THROW ; | about to tun out
JSR SUB_HAMMER_THROW ; /
NO_THROW
LDA $1588,x ; \ if sprite is not on ground...
AND #$04 ; } ...(4 = on ground) ...
BEQ NO_JUMP ; / ...goto NO_JUMP
LDA #$10 ; \ y speed = 10
STA $AA,x ; /
JSR SUB_GET_DIR ; \ always face mario
TYA ; |
STA $157C,x ; /
LDA $1570,x ; \ makes hammer bro jump
CLC ; |
ADC #$77 ; |
AND #$E7 ; |
BNE NO_JUMP ; |
JSR SUB_GET_SPEED
LDA $1686,x
ORA #$80
STA $1686,x
NO_JUMP LDA $14 ; \ set x speed
AND #$3F ; |A:014C X:0009 Y:0001 D:0000 DB:03 S:01E9 P:envMXdizcHC:1328 VC:089 00 FL:19405
BNE LABEL4 ; |A:0140 X:0009 Y:0001 D:0000 DB:03 S:01E9 P:envMXdizcHC:1344 VC:089 00 FL:19405
LDA $151C,x ; |
EOR #$01 ; |
STA $151C,x ; |
LABEL4 LDA $151C,x ; |
AND #$01 ; |
TAY ; |
LDA SPEED_TABLE,y ; |
STA $B6,x ; / A:01F9 X:0009 Y:0001 D:0000 DB:03 S:01E9 P:eNvMXdizcHC:0014 VC:090 00 FL:19405
JSL $01802A ; update position based on speed values
LDA $1588,x ; \ if hammer bro is touching the side of an object...
AND #$03 ; |
BEQ DONT_CHANGE_DIR ; |
LDA $151C,x ; |
EOR #$01 ; | ... change hammer bro direction
STA $151C,x ; /
DONT_CHANGE_DIR JSL $018032 ; interact with other sprites
JSL $01A7DC ; check for mario/hammer bro contact
NO_CONTACT RTS ; return
JUMP_HEIGHT dcb $A0,$D0
DISABLE_TIME dcb $28,$2B
SUB_GET_SPEED LDA $14D4,x
XBA
LDA $D8,x
PHP
REP #$30
CMP.W #$0138
BCS JUMP_UP
CMP.W #$00F8
BCC JUMP_DOWN
PLP
LDA $7B
ADC $7D
ADC $13
ADC $AA,x
ADC $B6,x
ADC $E4,x
ADC $94
ADC $0F33
ADC $02AC
ADC $03F0
AND #$01
PHY
TAY
SET_HEIGHT LDA DISABLE_TIME,y
STA $1540,x
LDA JUMP_HEIGHT,y
STA $AA,x
PLY
RTS
JUMP_UP PLP
PHY
LDY #$00
BRA SET_HEIGHT
JUMP_DOWN PLP
PHY
LDY #$01
BRA SET_HEIGHT
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; hammer routine
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X_OFFSET dcb $F6,$0A
X_OFFSET2 dcb $FF,$00
Y_SPEED = $CF
SUB_HAMMER_THROW LDA $15A0,x ;A:0100 X:0009 Y:0009 D:0000 DB:03 S:01E8 P:envMXdiZcHC:0130 VC:086 00 FL:19396
ORA $186C,x ;A:0101 X:0009 Y:0009 D:0000 DB:03 S:01E8 P:envMXdizcHC:0162 VC:086 00
FL:19396
ORA $15D0,x
BNE LABEL6
GENERATE_EGG LDA #$37 ; \ sound effect
STA $1DF9
LDY #$ED ;A:0218 X:0009 Y:0009 D:0000 DB:03 S:01E8 P:envMXdizcHC:0522 VC:104 00 FL:19452
LDA $157C,x ;A:0218 X:0009 Y:00E8 D:0000 DB:03 S:01E8 P:eNvMXdizcHC:0538 VC:104 00 FL:19452
BNE LABEL9 ;A:0201 X:0009 Y:00E8 D:0000 DB:03 S:01E8 P:envMXdizcHC:0570 VC:104 00 FL:19452
LDY #$14 ;A:0200 X:0009 Y:00E8 D:0000 DB:03 S:01E8 P:envMXdiZcHC:0210 VC:098 00 FL:21239
LABEL9 STY $00 ;A:0201 X:0009 Y:00E8 D:0000 DB:03 S:01E8 P:envMXdizcHC:0592 VC:104 00 FL:19452
LDY #$07 ;A:0201 X:0009 Y:00E8 D:0000 DB:03 S:01E8 P:envMXdizcHC:0616 VC:104 00 FL:19452
LABEL8 LDA $170B,y ;A:0201 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0632 VC:104 00 FL:19452
BEQ LABEL7 ;A:0200 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdiZcHC:0664 VC:104 00 FL:19452
DEY ;A:0204 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0088 VC:103 00 FL:19638
BPL LABEL8 ;A:0204 X:0009 Y:0006 D:0000 DB:03 S:01E8 P:envMXdizcHC:0102 VC:103 00 FL:19638
RTS ;
LABEL7 LDA #$04 ;A:0200 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdiZcHC:0686 VC:104 00 FL:19452
STA $170B,y ;A:0204 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0702 VC:104 00 FL:19452
PHY
LDA $157C,x
TAY
LDA $E4,x ;A:0204 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0734 VC:104 00 FL:19452
CLC
ADC X_OFFSET,y
PLY
STA $171F,y ;A:02C9 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:eNvMXdizcHC:0764 VC:104 00 FL:19452
PHY
LDA $157C,x
TAY
LDA $14E0,x ; |
ADC X_OFFSET2,y
PLY
STA $1733,y ;A:0204 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0828 VC:104 00 FL:19452
LDA $D8,x ;A:0204 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0860 VC:104 00 FL:19452
STA $1715,y ;A:0270 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0890 VC:104 00 FL:19452
LDA $14D4,x ;A:0270 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0922 VC:104 00 FL:19452
STA $1729,y ;A:0201 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0954 VC:104 00 FL:19452
LDA #Y_SPEED ;A:0201 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:0986 VC:104 00 FL:19452
STA $173D,y ;A:02C8 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:eNvMXdizcHC:1002 VC:104 00 FL:19452
LDA $00 ;A:02C8 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:eNvMXdizcHC:1034 VC:104 00 FL:19452
STA $1747,y ;A:02E8 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:eNvMXdizcHC:1058 VC:104 00 FL:19452
BRA LABEL10 ;A:02E8 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:eNvMXdizcHC:1090 VC:104 00 FL:19452
LABEL6 RTS ;A:0101 X:0009 Y:0009 D:0000 DB:03 S:01E8 P:envMXdizcHC:0248 VC:086 00 FL:19396
LABEL10 LDA $1715,y ;A:02E8 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:eNvMXdizcHC:1112 VC:104 00 FL:19452
ADC #$F7 ;A:0270 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizcHC:1144 VC:104 00 FL:19452
STA $1715,y ;A:0267 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizCHC:1160 VC:104 00 FL:19452
BCC LABEL11 ;A:0267 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizCHC:1192 VC:104 00 FL:19452
LDA $1729,y ;A:0267 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizCHC:1208 VC:104 00 FL:19452
ADC #$FF ;A:0201 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizCHC:1240 VC:104 00 FL:19452
STA $1729,y ;A:0201 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizCHC:1256 VC:104 00 FL:19452
LABEL11 RTS ;A:0220 X:0009 Y:0007 D:0000 DB:03 S:01E8 P:envMXdizCHC:1336 VC:104 00 FL:19452
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; graphics routine
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SUB_GFX JSR GET_DRAW_INFO ; after: Y = index to sprite tile map ($300)
; $00 = sprite x position relative to screen boarder
; $01 = sprite y position relative to screen boarder
LDA $1602,x ; \
ASL A
ASL A ; | $03 = index to frame start (frame to show * 2 tile per frame)
STA $03 ; /
LDA $157C,x ; \ $02 = sprite direction
STA $02 ; /
PHX ; push sprite index
LDX #$02 ; loop counter = (number of tiles per frame) - 1
LOOP_START PHX ; push current tile number
PHX
TXA
LDX $02
BNE NO_ADJ
CLC
ADC #$03
NO_ADJ TAX
LDA $00 ; \ tile x position = sprite x location ($00)
CLC
ADC HORZ_DISP,x
STA $0300,y ; /
PLX
LDA $01 ; \ tile y position = sprite y location ($01) + tile displacement
CLC ; |
ADC VERT_DISP,x ; |
STA $0301,y ; /
LDA TILE_SIZE,x
PHX
PHA
TYA ; \ get index to sprite property map ($460)...
LSR A ; | ...we use the sprite OAM index...
LSR A ; | ...and divide by 4 because a 16x16 tile is 4 8x8 tiles
TAX ; |
PLA
STA $0460,x ; /
PLX
TXA ; \ X = index to horizontal displacement
ORA $03 ; / get index of tile (index to first tile of frame + current tile number)
TAX ; \
LDA TILEMAP,x ; \ store tile
STA $0302,y ; /
LDX $02 ; \
LDA PROPERTIES,x ; | get tile properties using sprite direction
LDX $15E9 ; |
ORA $15F6,x ; | get palette info
ORA $64 ; | ?? what is in 64, level properties... disable layer priority??
STA $0303,y ; / store tile properties
PLX ; \ pull, X = current tile of the frame we're drawing
INY ; | increase index to sprite tile map ($300)...
INY ; | ...we wrote 1 16x16 tile...
INY ; | ...sprite OAM is 8x8...
INY ; | ...so increment 4 times
DEX ; | go to next tile of frame and loop
BPL LOOP_START ; /
PLX ; pull, X = sprite index
LDA $1558,x
CMP #$02
BCC NO_SHOW_HAMMER
CMP #30
BCS NO_SHOW_HAMMER
LDA $1602,x
CMP #$02
BCS SHOW_HAMMER_TOO
NO_SHOW_HAMMER LDY #$FF ; \ 02, because we didn't write to 460 yet
LDA #$02 ; | A = number of tiles drawn - 1
JSL $01B7B3 ; / don't draw if offscreen
RTS ; return
HAMMER_OFFSET dcb $00,$00
SHOW_HAMMER_TOO PHX
LDA $00
LDX $02
CLC
ADC HAMMER_OFFSET,x
STA $0300,y
LDA $01 ; \ tile y position = sprite y location ($01) + tile displacement
CLC ; |
ADC #$F2
STA $0301,y ; /
LDA #HAMMER_TILE ; \ store tile
STA $0302,y ; /
PHX
TYA ; \ get index to sprite property map ($460)...
LSR A ; | ...we use the sprite OAM index...
LSR A ; | ...and divide by 4 because a 16x16 tile is 4 8x8 tiles
TAX ; |
LDA #$02
STA $0460,x ; /
PLX
LDA #$07
CPX #$00
BNE NO_FLIP_HAMMER
ORA #$40
NO_FLIP_HAMMER ORA $64 ; | put in level properties
STA $0303,y ; / store tile properties
PLX
INY ; | increase index to sprite tile map ($300)...
INY ; | ...we wrote 1 16x16 tile...
INY ; | ...sprite OAM is 8x8...
INY ; | ...so increment 4 times
LDY #$FF ; \ 02, because we didn't write to 460 yet
LDA #$03 ; | A = number of tiles drawn - 1
JSL $01B7B3 ; / don't draw if offscreen
RTS ; return
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; routines below can be shared by all sprites. they are ripped from original
; SMW and poorly documented
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; $B760 - graphics routine helper - shared
; sets off screen flags and sets index to OAM
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;org $03B75C
TABLE1 dcb $0C,$1C
TABLE2 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 TABLE1,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 TABLE2,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 ; /
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; $B817 - horizontal mario/sprite check - shared
; Y = 1 if mario left of sprite??
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;org $03B817 ; Y = 1 if contact
SUB_GET_DIR LDY #$00 ;A:25D0 X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizCHC:1020 VC:097 00 FL:31642
LDA $94 ;A:25D0 X:0006 Y:0000 D:0000 DB:03 S:01ED P:envMXdiZCHC:1036 VC:097 00 FL:31642
SEC ;A:25F0 X:0006 Y:0000 D:0000 DB:03 S:01ED P:eNvMXdizCHC:1060 VC:097 00 FL:31642
SBC $E4,x ;A:25F0 X:0006 Y:0000 D:0000 DB:03 S:01ED P:eNvMXdizCHC:1074 VC:097 00 FL:31642
STA $0F ;A:25F4 X:0006 Y:0000 D:0000 DB:03 S:01ED P:eNvMXdizcHC:1104 VC:097 00 FL:31642
LDA $95 ;A:25F4 X:0006 Y:0000 D:0000 DB:03 S:01ED P:eNvMXdizcHC:1128 VC:097 00 FL:31642
SBC $14E0,x ;A:2500 X:0006 Y:0000 D:0000 DB:03 S:01ED P:envMXdiZcHC:1152 VC:097 00 FL:31642
BPL LABEL16 ;A:25FF X:0006 Y:0000 D:0000 DB:03 S:01ED P:eNvMXdizcHC:1184 VC:097 00 FL:31642
INY ;A:25FF X:0006 Y:0000 D:0000 DB:03 S:01ED P:eNvMXdizcHC:1200 VC:097 00 FL:31642
LABEL16 RTS ;A:25FF X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:1214 VC:097 00 FL:31642
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; $B85D - off screen processing code - shared
; sprites enter at different points
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;org $03B83B
TABLE3 dcb $40,$B0
TABLE6 dcb $01,$FF
TABLE4 dcb $30,$C0,$A0,$80,$A0,$40,$60,$B0
TABLE5 dcb $01,$FF,$01,$FF,$01,$00,$01,$FF
SUB_OFF_SCREEN_MOLE LDA #$06 ; \ entry point of routine determines value of $03
BRA STORE_03 ; |
SUB_OFF_SCREEN_X1 LDA #$04 ; |
BRA STORE_03 ; |
SUB_OFF_SCREEN_X2 LDA #$02 ; |
STORE_03 STA $03 ; |
BRA START_SUB ; |
SUB_OFF_SCREEN_HB STZ $03 ; /
START_SUB JSR SUB_IS_OFF_SCREEN ; \ if sprite is not off screen, return
BEQ RETURN_2 ; /
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_2 ; /
LDA $13 ; \
AND #$01 ; |
ORA $03 ; |
STA $01 ; |
TAY ; /
LDA $1A ;x boundry ;A:0101 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0256 VC:090 00 FL:16953
CLC ;A:0100 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdiZcHC:0280 VC:090 00 FL:16953
ADC TABLE4,y ;A:0100 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdiZcHC:0294 VC:090 00 FL:16953
ROL $00 ;A:01C0 X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizcHC:0326 VC:090 00 FL:16953
CMP $E4,x ;x pos ;A:01C0 X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizcHC:0364 VC:090 00 FL:16953
PHP ;A:01C0 X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizCHC:0394 VC:090 00 FL:16953
LDA $1B ;x boundry hi ;A:01C0 X:0006 Y:0001 D:0000 DB:03 S:01EC P:eNvMXdizCHC:0416 VC:090 00 FL:16953
LSR $00 ;A:0100 X:0006 Y:0001 D:0000 DB:03 S:01EC P:envMXdiZCHC:0440 VC:090 00 FL:16953
ADC TABLE5,y ;A:0100 X:0006 Y:0001 D:0000 DB:03 S:01EC P:envMXdizcHC:0478 VC:090 00 FL:16953
PLP ;A:01FF X:0006 Y:0001 D:0000 DB:03 S:01EC P:eNvMXdizcHC:0510 VC:090 00 FL:16953
SBC $14E0,x ;x pos high ;A:01FF X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizCHC:0538 VC:090 00 FL:16953
STA $00 ;A:01FE X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizCHC:0570 VC:090 00 FL:16953
LSR $01 ;A:01FE X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizCHC:0594 VC:090 00 FL:16953
BCC LABEL20 ;A:01FE X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdiZCHC:0632 VC:090 00 FL:16953
EOR #$80 ;A:01FE X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdiZCHC:0648 VC:090 00 FL:16953
STA $00 ;A:017E X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizCHC:0664 VC:090 00 FL:16953
LABEL20 LDA $00 ;A:017E X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizCHC:0688 VC:090 00 FL:16953
BPL RETURN_2 ;A:017E X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizCHC:0712 VC:090 00 FL:16953
ERASE_SPRITE LDA $14C8,x ; \ if sprite status < 8, permanently erase sprite
CMP #$08 ; |
BCC KILL_SPRITE ; /
LDY $161A,x ;A:FF08 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdiZCHC:0140 VC:071 00 FL:21152
CPY #$FF ;A:FF08 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizCHC:0172 VC:071 00 FL:21152
BEQ KILL_SPRITE ;A:FF08 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0188 VC:071 00 FL:21152
LDA #$00 ; \ mark sprite to come back A:FF08 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0204 VC:071 00 FL:21152
STA $1938,y ; / A:FF00 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdiZcHC:0220 VC:071 00 FL:21152
KILL_SPRITE STZ $14C8,x ; erase sprite
RETURN_2 RTS ; return
VERTICAL_LEVEL LDA $167A,x ; \ if "process offscreen" flag is set, return
AND #$04 ; |
BNE RETURN_2 ; /
LDA $13 ; \ only handle every other frame??
LSR A ; |
BCS RETURN_2 ; /
AND #$01 ;A:0227 X:0006 Y:00EC D:0000 DB:03 S:01ED P:envMXdizcHC:0228 VC:112 00 FL:1142
STA $01 ;A:0201 X:0006 Y:00EC D:0000 DB:03 S:01ED P:envMXdizcHC:0244 VC:112 00 FL:1142
TAY ;A:0201 X:0006 Y:00EC D:0000 DB:03 S:01ED P:envMXdizcHC:0268 VC:112 00 FL:1142
LDA $1C ;A:0201 X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0282 VC:112 00 FL:1142
CLC ;A:02BD X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizcHC:0306 VC:112 00 FL:1142
ADC TABLE3,y ;A:02BD X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizcHC:0320 VC:112 00 FL:1142
ROL $00 ;A:026D X:0006 Y:0001 D:0000 DB:03 S:01ED P:enVMXdizCHC:0352 VC:112 00 FL:1142
CMP $D8,x ;A:026D X:0006 Y:0001 D:0000 DB:03 S:01ED P:enVMXdizCHC:0390 VC:112 00 FL:1142
PHP ;A:026D X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNVMXdizcHC:0420 VC:112 00 FL:1142
LDA.W $001D ;A:026D X:0006 Y:0001 D:0000 DB:03 S:01EC P:eNVMXdizcHC:0442 VC:112 00 FL:1142
LSR $00 ;A:0200 X:0006 Y:0001 D:0000 DB:03 S:01EC P:enVMXdiZcHC:0474 VC:112 00 FL:1142
ADC TABLE6,y ;A:0200 X:0006 Y:0001 D:0000 DB:03 S:01EC P:enVMXdizCHC:0512 VC:112 00 FL:1142
PLP ;A:0200 X:0006 Y:0001 D:0000 DB:03 S:01EC P:envMXdiZCHC:0544 VC:112 00 FL:1142
SBC $14D4,x ;A:0200 X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNVMXdizcHC:0572 VC:112 00 FL:1142
STA $00 ;A:02FF X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizcHC:0604 VC:112 00 FL:1142
LDY $01 ;A:02FF X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizcHC:0628 VC:112 00 FL:1142
BEQ LABEL22 ;A:02FF X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0652 VC:112 00 FL:1142
EOR #$80 ;A:02FF X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0668 VC:112 00 FL:1142
STA $00 ;A:027F X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0684 VC:112 00 FL:1142
LABEL22 LDA $00 ;A:027F X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0708 VC:112 00 FL:1142
BPL RETURN_2 ;A:027F X:0006 Y:0001 D:0000 DB:03 S:01ED P:envMXdizcHC:0732 VC:112 00 FL:1142
BMI ERASE_SPRITE ;A:0280 X:0006 Y:0001 D:0000 DB:03 S:01ED P:eNvMXdizCHC:0170 VC:064 00 FL:1195
SUB_IS_OFF_SCREEN LDA $15A0,x ; \ if sprite is on screen, accumulator = 0
ORA $186C,x ; |
RTS ; / return