Difference between revisions of "Sonic the Hedgehog CD/MMD Tweaking"
From Sonic Retro
(Converting byte_ and word_ to raw addresses) |
(→Invincibility duration time: Dammit I always miss something obvious) |
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<asm>$A8F8: | <asm>$A8F8: | ||
move.b #1,($FF151F).l ; Enable invicibility | move.b #1,($FF151F).l ; Enable invicibility | ||
| − | move.w #$ | + | move.w #$4B0,($FFFFD032).w ; Set the invincibility duration time to $4B0</asm> |
==Super Sneakers duration time== | ==Super Sneakers duration time== | ||
Revision as of 09:37, 31 August 2008
Here are some locations in an European Sonic CD level MMD which contain tweakable code (in 68k assembly).
Contents
- 1 Maximum rings allowed
- 2 Lowest number of rings required to access the special stage
- 3 Number of rings you get when you break the ring monitor
- 4 Invincibility duration time
- 5 Super Sneakers duration time
- 6 Maximum velocity and accelleration
- 7 Maximum velocity and accelleration (with Super sneakers)
- 8 Number of rings you get when you get a ring
Maximum rings allowed
<asm>$AEFA: move.w ($FF1512).l,d1 ; Move number of rings into d1 cmpi.w #$3E8,d1 ; Compare $3E8 (1000) with d1 (number of rings) bcs.s loc_20AF10 ; If the number of rings is < 1000, branch move.w #$3E7,d1 ; Move $3E7 (999) into d1 move.w d1,($FF1512).l ; Move d1 back to the address where the number of rings is at</asm>
Lowest number of rings required to access the special stage
<asm>$D50C: cmpi.w #$32,($FF1512).l ; Compare 50 with the number of rings bcc.s loc_20D51C ; If number of rings >= 50, allow entrance to the special stage. jmp sub_20788C ; Otherwise jump here</asm>
Number of rings you get when you break the ring monitor
<asm>$A88E: addi.w #$A,($FF1512).l ; Add 10 to the current number of rings</asm>
Invincibility duration time
<asm>$A8F8: move.b #1,($FF151F).l ; Enable invicibility move.w #$4B0,($FFFFD032).w ; Set the invincibility duration time to $4B0</asm>
Super Sneakers duration time
<asm>$A95A: move.b #1,($FF1520).l ; Enable super sneakers move.w #$4B0,($FFFFD034).w ; Set the super sneakers duration time to $4B0</asm>
Maximum velocity and accelleration
<asm>$4082: move.w #$600,($FFFFF760).w ; Maximum velocity move.w #$C,($FFFFF762).w ; Maximum accelleration</asm>
Maximum velocity and accelleration (with Super sneakers)
<asm>$A968: move.w #$C00,($FFFFF760).w ; Set maximum velocity to $C00 move.w #$18,($FFFFF762).w ; Set maximum accelleration to $18</asm>
Number of rings you get when you get a ring
<asm>$9F1A: addq.w #1,($FF1512).l ; Add 1 to number of rings</asm>