[MainMemory]

copypaste from Random Hack/Mini Project thread:
So, I was playing Sonic and the Secret Rings, and it inspired me to make a hack of Sonic 2

Sonic 2 Secret Rings Edition
Go to the options menu to select a mission:
Normal: Play the game normally
Hands Off: Finish the stage with 0 rings (you can collect rings, you just have to finish with 0)
Diehard: Don't die
Perfect: Don't get hurt (even with a shield)
Stealth Attack: Don't destroy any enemies
Super Sonic: Start the level as Super Sonic and keep the transformation for the whole level, with an increased ring drain. Item boxes except speed shoes provide extra rings.
No Rings: Don't collect any rings (even from monitors).
Escort: Don't let Tails die or fall behind. Possibly the hardest mission that can be completed on all levels.
Rampage: Destroy all the badniks in the level.
Ring Collection: Collect a certain amount of rings.

Failing any of these will result in an instant GAME OVER. Otherwise, you have infinite lives.
Press START on the Mission select to go to the Level Select screen.
Hands Off doesn't work on Sky Chase, Wing Fortress, or Death Egg, as they lack a signpost/capsule.
Ideas for other missions would be appreciated, as long as it's within my (somewhat limited) capabilities, or someone could help me with it.

Things I want to do:
A counter for said missions, preferably replacing the TIME counter, and looking like this: MISN 000/100
Disabling the time over behavior.
Possibly loading different ring/object layouts depending on the mission

Videos:
YouTube playlist
Video of someone that isn't me playing all the levels with Super Sonic mission

This post has been edited by MainMemory: 05 July 2012 - 04:22 PM

[Enzo Aquarius]

This is a very neat hack, downloaded and playing now. Some notes:

- Perhaps set up some missions to be unlocked?
- I don't know if you wanted the game to do it, but prevent the level select screen from loading up after you choose a challenge.
- No Rings: I hope you removed some of the necessary rings.
- In Super Sonic, I was fighting Robotnik in EHZ and died by touching the drill.

[MainMemory]

This is a very neat hack, downloaded and playing now. Some notes:

- Perhaps set up some missions to be unlocked?

possibly...

- I don't know if you wanted the game to do it, but prevent the level select screen from loading up after you choose a challenge.

that is completely intentional, because it's impossible to do a straight run on several challenges

- No Rings: I hope you removed some of the necessary rings.

No, but I probably should make new layouts for some missions.

- In Super Sonic, I was fighting Robotnik in EHZ and died by touching the drill.

that... shouldn't happen... was it a normal death or did you game over from running out of rings?

[D.A. Garden]

Ok, so I played it before and really enjoyed it.
Random thoughts:
I just played the No Rings challenge. Only level I can do is Oil Ocean 1. The others seem impossible.
Die Hard really isn't hard to me, I can complete the game without dying most of the time anyway.
Hands Off can be abused by getting hurt right before the end of the level until you no longer have any rings, which is a bit silly.
Perfect was actually rather fun; I sometimes abuse getting hurt and usually got hit by stupid things, like arrows in ARZ or a projectile I didn't see coming.
Stealth Attack took me off guard. I'm so used to smashing my way through every enemy I encounter and having to not do so really was difficult for me.
Super Sonic is really difficult. The ring drain is too much on some levels in my opinion. Also the graphics mess up if you run from the get go to full speed. (I think it's the flash behind him, it loads the title card graphics briefly)

Now, onto a few ideas that you could consider:
Time Attack (Self-explanatory)
Collector (Collect a set number rings and finish the level with them)
Scoreboard (Get a set score before the end of the level)
And as a joke one, "Hold Right to win!" (Right is automatically pressed down. See if you can finish the level...)

[MainMemory]

Time Attack, ring collector and Score Attack are planned, but would require me to use tables so each zone has a fitting target value.
Hold right to win is

[Chris Highwind]

And as a joke one, "Hold Right to win!" (Right is automatically pressed down. See if you can finish the level...)

So, Sonic moves forward on his own?

Make that for every mission, then it'd be a true Sonic 2 Secret Rings

[MainMemory]

AHAHAno u

[Irixion]

I can beat the entire game with no rings with sonic and tails :V

[MainMemory]

Videos or it didn't happen.

Also, new Escort challenge.

I'm thinking of adding Time Break and Speed Break, and maybe porting Amy over from my other hack.

[MainMemory]

So, I've actually had this for a while, but now I've uploaded a new version with Speed Break, activated by holding A, it drains your rings quickly and disables left and right movement.

[MainMemory]

I've made uploaded a new version of this to the wiki, with a slightly edited title screen:



The Continue option returns you to the last level you were in, although it doesn't have SRAM. But you can access the level select anyway so it's just for convenience.

I've ported Amy from my other hack, she's a bit slower than Sonic, can go super and lacks Sonic's Speed Break move.

I've added level specific starting ring counts for the Super Sonic mission (exact amounts below). I've put the amounts so that I can beat all the levels as Sonic with about 20 rings left over. Although I can't guarantee that you'll survive the WFZ end cutscene... and you'll die during the end sequence...



I've added two new missions:
Rampage - Destroy all the badniks in the level.
Ring Collection - Collect a certain amount of rings (the number of rings in the level not counting item boxes). It doesn't reset to 0 when you get hurt.

Since there's currently no ingame counter for this (I don't know how to edit the HUD), here are the tables for the Super Sonic, Rampage and Ring missions:

CODE

SuperMissionTable: ; Number of starting rings for each level for the Super Sonic mission.
dc.w 25, 25 ;EHZ
dc.w 0, 0 ;1
dc.w 0, 0 ;2
dc.w 0, 0 ;3
dc.w 100, 80 ;MTZ
dc.w 225, 0 ;MTZ3
dc.w 150, 0 ;WFZ
dc.w 50, 50 ;HTZ
dc.w 0, 0 ;HPZ
dc.w 0, 0 ;9
dc.w 100, 150 ;OOZ
dc.w 50, 50 ;MCZ
dc.w 70, 120 ;CNZ
dc.w 30, 30 ;CPZ
dc.w 125, 0 ;DEZ
dc.w 30, 60 ;ARZ
dc.w 300, 0 ;SCZ

RampageMissionTable: ;Number of enemies in each level for the Rampage mission.
dc.w 32, 29 ;EHZ
dc.w 0, 0 ;1
dc.w 0, 0 ;2
dc.w 0, 0 ;3
dc.w 7, 10 ;MTZ
dc.w 16, 0 ;MTZ3
dc.w 10, 0 ;WFZ
dc.w 9, 23 ;HTZ
dc.w 0, 0 ;HPZ
dc.w 0, 0 ;9
dc.w 22, 28 ;OOZ
dc.w 18, 20 ;MCZ
dc.w 2, 6 ;CNZ
dc.w 13, 5 ;CPZ
dc.w 0, 0 ;DEZ
dc.w 38, 53 ;ARZ
dc.w 52, 0 ;SCZ

RingMissionTable: ;Number of rings in each stage for the Ring Collection mission.
dc.w 226, 225 ;EHZ
dc.w 0, 0 ;1
dc.w 0, 0 ;2
dc.w 0, 0 ;3
dc.w 218, 210 ;MTZ
dc.w 153, 0 ;MTZ3
dc.w 196, 0 ;WFZ
dc.w 146, 199 ;HTZ
dc.w 219, 0 ;HPZ
dc.w 0, 0 ;9
dc.w 207, 183 ;OOZ
dc.w 183, 220 ;MCZ
dc.w 232, 234 ;CNZ
dc.w 195, 157 ;CPZ
dc.w 0, 0 ;DEZ
dc.w 176, 217 ;ARZ
dc.w 67, 0 ;SCZ

[shobiz]

You don't need to store the number of rings in each level in a table since Sonic 2 already has a perfect counter (at $FFFFFF40).

[MainMemory]

I may not have needed to, but I have, so there's no point in changing it now. I'd rather add new features than rewrite existing ones.

[MainMemory]

For all one person that cares about this hack, I've updated it.

• Amy has a higher jump.
• Amy has a brand new move: Pressing A with 50 rings will give her Invincibility, a Shield, and Speed Shoes, much like Flower Festival from Sonic Heroes.
• Fixed a bug with Sonic's boost flag not clearing properly if you end the level during a boost.
• Changed the air speed cap to the same code as on the ground.
• Fixed tile bug with Super Sonic.
• 1up monitors give 40 rings in all modes, instead of just Super Sonic.
• Game Over always returns to the SEGA screen even if you have continues, because of the continue option on the main menu.
• Repointed ErrorTrap and 2P Level Select to the Checksum error screen.

[MainMemory]

Update:

• Dying puts you back at the last checkpoint without restarting the level, and preserving ring count in the Super Sonic mission.
• Disabled Special Stages in Super Sonic mission and automatically gives you the Super Sonic ending.
• Increased starting rings in CNZ2 and MCZ2 Super Sonic mission.