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Some sprite fail.. help?
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Hernan
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Hi, I've made a sprite to test my skills just now, but when I enter the level the sprite is in, the game crashes.
It's basically a mushroom that damages mario when touched.
Did I do something wrong?

Here it is.
mzuenni
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maybe this works...
(i have basically only deletet very silly code like adding #$00 making a loop which doesn't loop ...)
Code
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; INIT and MAIN JSL targets
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

                    dcb "INIT"
                    JSR SUB_HORZ_POS        ;face mario initially
                    TYA
                    STA $157C,x
                    RTL		

	                dcb "MAIN"			
                    PHB
                    PHK				
                    PLB				
                    JSR SPRITE_ROUTINE	
                    PLB
                    RTL     


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; SPRITE_ROUTINE
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

SPEED_TABLE     	dcb $08,$F8			    ; speeds (right, left)

SPRITE_ROUTINE	  	JSR Graphics
                    LDA $14C8,x             ; return if sprite status != 8
                    CMP #$08            	 
                    BNE RETURN           
                    LDA $9D			        ; return if sprites locked
                    BNE RETURN    
                   JSL $01A7DC ; check for mario/sprite contact 
                   BCC NoContact
              JSL $00F5B7 ; Hurts mario if touched
              BRA Continue
              NoContact
              Continue
                    JSR SUB_OFF_SCREEN_X0   ; only process sprite while on screen             

                    LDY $157C,x             ; 
                    LDA SPEED_TABLE,y       ; x speed depends on direction
                    STA $B6,x               ; 

                    LDA $1588,x             ; check if sprite is touching object side
                    AND #$03                ; 
                    BEQ DONT_CHANGE_DIR	; 
                    LDA $157C,x             ; 
                    EOR #$01                ; flip sprite direction
                    STA $157C,x             ;                     
                    DONT_CHANGE_DIR

                    JSL $01802A             ; update position based on speed values
                    JSL $018032             ; interact with other sprites      
                    RETURN
                    RTS
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;Graphics Routine;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Graphics:
JSR GET_DRAW_INFO

LDA $00
STA $0300,y

LDA $01
STA $0301,y

LDA #$24
STA $0302,y

LDA #$2D
ORA $64
STA $0303,y

LDY #$02
LDA #$00
JSL $01B7B3
RTS

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; GET_DRAW_INFO
; This is a helper for the graphics routine.  It sets off screen flags, and sets up
; variables.  It will return with the following:
;
;       Y = index to sprite OAM ($300)
;       $00 = sprite x position relative to screen boarder
;       $01 = sprite y position relative to screen boarder  
;
; It is adapted from the subroutine at $03B760
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

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	 ; /
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; $B85D - off screen processing code - shared
; sprites enter at different points
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

                    ;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_X0   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_X3   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
Hernan
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Actually this doesn't change anything... the level won't load, it freezes on the "MARIO START" screen. (This level works without the sprite, I tried)
JackTheSpades



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You do
Code
JSR SUB_HORZ_POS        ;face mario initially

but you don't seem to have the subroutine in your code, do you?

As for you Sprite Routine, try this:
Code
SPRITE_ROUTINE
	  	JSR Graphics

                LDA $14C8,x   ; return if sprite status != 8
                CMP #$08            	 
                BNE RETURN           
                LDA $9D	  ; return if sprites locked
                BNE RETURN    

		JSR SUB_OFF_SCREEN_X0   ; only process sprite while on screen

                JSL $01A7DC ; check for mario/sprite contact 
                BCC NoContact
              	JSL $00F5B7 ; Hurts mario if touched
NoContact            

                LDA $1588,x             ; don't set speeds if not on the ground
                AND #$04                ;
                BEQ NOT_ON_GND          ; 
                LDA #$10                ; y speed = 10
                STA $AA,x               ;
                LDY $157C,x             ; 
                LDA SPEED_TABLE,y       ; x speed depends on direction
                STA $B6,x               ; 
NOT_ON_GND 

                LDA $1588,x             ; check if sprite is touching object side
                AND #$03                ; 
                BEQ DONT_CHANGE_DIR	; 
                LDA $157C,x             ; 
                EOR #$01                ; flip sprite direction
                STA $157C,x             ;                     
DONT_CHANGE_DIR

                    JSL $01802A             ; update position based on speed values
                    JSL $018032             ; interact with other sprites      
RETURN
                    RTS


--------------------
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Hernan
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Thank you now it works, but I have another problem.
I used your Sprite GFX Creator to make the graphic routine, but the image that shows is not the good one:

It is supposed to be a mushroom... Is this a problem related to your tool?
JackTheSpades



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Originally posted by Hernan
Thank you now it works, but I have another problem.
I used your Sprite GFX Creator to make the graphic routine, but the image that shows is not the good one:

I figured after looking at the code.
What is the tile suppose to look like?

Taking a wilde guess, I assume a mushroom.
If that's the case, you have to right-click on the tile and disselect "Use Second GFX Page".

You seem to be new to sprite programming, so let me explain:
In Lunar Magic, if you click on #lm{sgfxby} you'll notice 4 slots for sprite GFX files.
The ones labled as SP1/SP2 are for the first GFX page. SP3/SP4 are for the second.

You can see the first sprite GFX page if you open #lm{8x} and go down to page 3 (meaning that at the bottom of the window it'll say "Tile 0x3pp (Address 0xsomething) pp=some digit).
The second page is on page 4.

Now, the program knows it's suppose to use tile 0x24, but not whether it's 0x324 or 0x424.

If "Use Second GFX Page" is unchecked it'll use 0x324
If "Use Second GFX Page" is checked it'll use 0x424

hope that helped.

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Hernan
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Thank you, it works now ^^
JackTheSpades



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Glad I could help.
Also glad someone's using my tool ^^

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