Sonic Pocket Winter

copy-paste from the SHC page, yeah, which you can find here

Screenshots from SHC page: (images will work whenever the site is up)


This is a small proof-of-concept hack, made using a disassembly of Sonic Pocket Adventure that I worked on during the last year.

Features
- Character Select screen that makes you able to select Tails and Knuckles
- It's now winter in Neo South Island Zone.
- added Sonic's Super Peelout (simplified) and Tails' flying ability (Yes, you can hurt enemies like in S3K.)
- added Knuckles including gliding (huge thanks to VAdaPEGA for drawing additional sprites!!)
- new music (both ported and custom)
- DAC voices for character selection
- bugfixes and optional tile compression (to make room for the additional sprites)
- edited first boss

Thanks to
- Hex-Rays for the Interactive Disassembler
- Konstantin Norvatoff for the TLCS900 IDA module
- Alfred Arnold for Makroassembler AS
- Nintendo_6444 for Tails' flying sprites
- MainMemory for SonLVL
- Kent Hansen for Tile Layer Pro
- Sonic Physics Guide (was a big help while coding Tails' and Knuckles' moves)
- VAdaPEGA for additional Knuckles sprites and any additional graphics in general
- W1P3OUT XL a.k.a SynthRye for the Ice Cap Zone MIDI I used for the boss' theme

Things that didn't make it
- all Knuckles sprites (VAdaPEGA was so nice and drew many of the missing sprites for me, but I told him that Pantufa has priority)
- edited level layouts (I lack the creativity to do so)
- edited special stages (technically possible and I planned to do a small edit, but I ran out of time)
- more new music (I spent too much time optimizing the boss theme)

Emulator support
Both Mednafen and MAME/MESS seem to work pretty well.
NeoPop has problems with the sound: Sound timing is a bit wonky and it outputs only the left channel.

Small note
I took some freedom regarding player movements, so you can make unrolled jumps and roll/unroll in air.

Download
If you want a direct download link - it's here. Alternatively you can just get it from the SHC page, which leads to the very same link.

 

Thank you all for enjoying my hack and thanks for the trophies!
I really didn't expect to win so many.

So, here is the full source code for the hack: http://vgmrips.net/misc/SPW_full_source.7z
The SonLVL SPA mod is not included, but I pushed a branch to the SonLVL GitHub Repo.

I'll post some development trivia later.
The release of the actual SPA disasm will be sometime later. I want to have a look at a few functions I might've labelled incorrectly.


And here is a detailed list of (visible) changes:

• fixed bug where holding "down" while landing on ground had no effect (very noticeable in Cosmic Casino)
• modified moveset to roll/unroll anytime
  • unrolled jump: hold "up" while pressing A/B
  • unrolling while on ground: press "up"
  • unroll in air: hold "up" while pressing A/B
  • roll in air: hold "down" while pressing A/B
• fixed debug sound test (most SFX and the last few songs weren't working)
• added Knuckles as playable character
• fixed Tails' tails still being on screen after jumping into Special Stage ring
• added Character Select screen (including custom fade-out effect)
• added Sonic's Super Peel Out (works like Spindash, because doing it like Sonic CD would be pointless with the modified moveset)
• added Tails' flying ability
• added Knuckles' gliding ability
• added DAC voices to the character select screen
• made background of Character Select screen scroll (disabled, because I think the current BG looks nicer)
• added new Knuckles sprites drawn by VAdaPEGA
• fixed NSI flowers having a missing tile
• edited NSI boss
  • each time the hammer touches the ground, it will spawn some ice spikes that can hurt the player
  • The powerful hammer smash originally caused an earthquake that hurt the player. The earthquake now just knocks the player back, but also causes a wave of ice spikes that is likely to hurt the player instead.
• added "Thanks for playing" screen (uses image hidden in the original ROM, custom text drawing routine)
• added underwater palette for Knuckles, Special Stage palettes for Knuckles/Tails
• edited the title screen to say "Pocket Winter" (thanks again to VAdaPEGA for quickly drawing the graphics)

New music tracks are:

• NeoGeo Pocket BIOS: BIOS jingle and BGM (used on "Thanks for playing" screen)
• SNK vs. Capcom: The Match of the Millennium: "The Force" (character selection) and "Choujou Kessen" (unused)
• S&K PC Collection: Ice Cap 1/2 (music for Neo South Island 1/2)
• Sonic 3 Invincibility (invincibility theme)
• Ice Cap Zone (MegaDrive) remix by W1P3OUT XL (boss theme)

 

Mind sharing a download link for the Sonlvl mod? I don't really know or want to compile it.