Sonic the Hedgehog: Knuckles in Sonic 1

Stealth has created a hack that imports Knuckles into Sonic the Hedgehog 1. This is a very advanced hack and includes all of Knuckles moves: Spin Dash, Gliding, Wall climbing, and even a bonus feature which can be accessed by inputting the following codes on the title screen.

*Super Knuckles (once all emeralds are obtained):
B B B B Up Down Left Right
(you'll hear a ring sound if code is implemented correctly)

*Cheat (Start with all emeralds):
B B B B B B Up Down Left Right
(if implemented correctly you should hear the same sound as when you get an extra continue)

The patch is in xdelta format due to the IPS patch being nearly as large as the patched ROM itself. Tested on a ROM in BIN format.

Knuckles the Echidna in Sonic the Hedgehog Rev 01

This is a modification of Sonic 1 to allow play as Knuckles. It was created using
Hivebrain's Sonic 1 disassembly, and my own Sonic and Knuckles "upmem" disassembly.
It not only contains a fully playable Knuckles, but also a new title screen, new
demos, Knuckles in the continue and ending sequences, and Knuckles equivalants
of all other sprites that refer to the character's identity. Testing on actual
hardware was conducted by LocalH

This modification was created by Stealth ([email protected])
http://stealth.emulationzone.org/



Data Modifications and Tools/Credits:

-SonED2 used to trace over life icon, level sign, continue icon, title logo art,
and large ending sequence sprite to make suitable for S1 Sonic palette
-Patcher program made to patch Knuckles art data to use S1 Sonic palette, with
manually-created table
-Mappings conversion program made to convert S2K mappings to S1 format
-"Knuckles the Echidna In" for ending manually drawn and converted to tiles by
SonED2
-New frames for Knuckles in ending made by Liz, converted to tiles by SonED2
-Mappings for "Knuckles Has Passed" and new ending sprites created with Lost
Library
-Some levels slightly modified to prevent impasses and errors that wouldn't
"realistically" happen, using SonED2
-New demos created with info from drx on the built-in demo recorder, and a demo
playback bugfix created by me


Revision 0:

- First release

Revision 1:

- Fixed player sprite tile loading to accomodate for all of Knuckles' tiles on
all animations
- Fixed a bug that allowed player to climb down through floors when solidity on
the wall didn't end
- Fixed a bug that freaked out the camera between a boss and the end of the level
- Fixed a bug that freaked out the camera during the title screen after the game
ended under certain circumstances
- Fixed a bug that allowed immediate skidding after hitting a horizontal spring
- Fixed a bug that disallowed spindashing through monitors that are right beside
the player
- Fixed a bug that allowed running/skidding on waterslides by pressing left/right
- Fixed a bug that disallowed panning the screen up/down (look up/down)
- Fixed a bug that sent player to the right after striking a pushable block when
gliding left
- Fixed a bug that caused the camera to pan to the right if the player is too far
to the left
- Fixed a bug that caused player not to be pushed down properly by solid sprites
when not moving up
- Fixed a bug that caused player to stop at the edge of conveyor belts instead of
falling off
- Fixed a bug that caused player to enter walking/pushing animation when spindashing
beside moving solid sprites
- Fixed a bug that caused player to enter walking animation when jumping beside
solid sprites
- Fixed a bug that caused player to keep spinning against pushable blocks that still
have room to move
- Fixed bugs that caused player to keep pushing animation when a wall or solid object
that was in his way was removed
- Fixed a bug that gave Caterkiller bodyparts one additional frame to damage player
after the head was destroyed
- "Fixed" "spike bug"
- Fixed tile error in GHZ
- Lowered switch in MZ3
- Lowered Special Stage Ring in SYZ1
- Removed unused Caterkiller tiles from SYZ so Roller enemy displays properly
- Implemented revision 1 scrolling effects
- Implemented dust sprites for spindash, skidding, and sliding
- Implemented player state reset after exiting debug mode
- Enabled entering more than one code per titlescreen sequence
- Implemented small bonus feature, activated by code: BBBBUDLR
- Implemented cheat for bonus feature (also activates): BBBBBBUDLR


Sonic The Hedgehog (USA_ Europe).md - NOINTRO
CRC32: F9394E97
MD5: 1BC674BE034E43C96B86487AC69D9293
SHA-1: 6DDB7DE1E17E7F6CDB88927BD906352030DAA194
SHA-256: 46160BAA06362C711C9F1A5017CB7371026444936C8AF5E93A78996CF32FF2A6