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[v1.2] CrossMomentum - A complete gameplay overhaul Details »»
[v1.2] CrossMomentum - A complete gameplay overhaul
Version: 1.2, by Frostiikin (Insert funny hahas here) Frostiikin is offline
Developer Last Online: Jan 2021

Version: SRB2 Rating: (13 votes - 4.69 average)
Released: 10-20-2020 Last Update: Never Favourites: 13
Characters Scripts Re-Useable Content Sprites/Graphics

Credits to DrSteph and Icezer for this incredibly poggers banner thingy

Warning: If you suffer from epilepsy, or are sensitive to flashing lights, please type "hyperflash off" in the console (press ~ to open console) before turning hyper.

It's finally here!
The massive project that i've been working on for the last few months is finally complete! CrossMomentum, also known as XMomentum is my envisionment of how srb2 would play if I was put at the helm. Featuring momentum, new character movesets, tricks, hyper forms, and much, much more!

This mod has a downright ridiculous amount of content, so i'm gonna split this up into sections.

Global changes

Almost all characters now are able to gain momentum by either running/rolling down slopes, or simply running on flat ground for a long enough time. Additionally, all characters who can spindash are capable of uncurling at any time, and bonus acceleration is given for rolling down any slope regardless of height. Due to this, it's typically a good idea to roll down any slope you can find.

Press Jump off of a spring to start tricking. While tricking, you can press Spin to rotate clockwise, and Jump to rotate counter-clockwise. The more flips you can do without touching the ground, the greater the eventual speed boost will be once you land! Just make sure you don't land on your head...

Hueshifted Skincolors
Each member of the vanilla cast gets their own unique skincolor, complete with hue shift! While not an objective improvement over vanilla, I think the characters look far nicer with these.

Hyper Forms
Any character who can go super can also go hyper! Just make sure you've got 150+ rings before transforming. I'll go into much more detail about the various hyper abilities you can get later down in the post.

no more airwalking
i don't like airwalk lol

Water Running
When running at high speeds, you may notice a trail of dust appearing behind you. This means that you're moving fast enough to water-run! Just make sure you keep your speed up, or you'll fall right through that lake...

Character-Specific changes

Returning from the SADC, Sonic gets the Momentum Thok! I took all the criticism that was given for the original ability into account here, and have made significant changes to how it works.
The momentum thok is, as the name implies, a thok that is heavily affected by your current momentum. The faster you're moving, the faster it'll fling you! Additionally, if you hold down jump after initiating a momentum thok, it'll turn into a momentum jumpthok!

Instead of his normal flight, tails gains three upwards "Bursts" that don't take away any speed. These allow him to skip major chunks of levels, but don't directly aid him in gaining or redirecting speed in any way. Additionally, you can also tap spin for a quick downwards burst, which is useful for getting around various bits of level geometry that may be right in your way. You can also hold spin for a normal fast-fall.

As a little bonus, you can also change the color of tails' shoes via the console command "Blueshoes"!

...knuckles doesn't really have many changes aside from those present in vanilla momentum mod, those being that he has less speed reduction from landing, and canceling a glide no longer halts momentum. May have more substantial changes in an update.

Amy has been almost entirely changed from her vanilla counterpart. Her new double jump move is an ability which I have dubbed the "Amycopter". Essentially, the amycopter allows you to redirect momentum in the direction you're currently facing, and gives you a slow fall effect for around a second. Additionally, hitting an enemy while in your amycopter state will send you flying into the air, and allow you to do another amycopter without touching the ground. She also now has the hammer jump, which is activated by pressing jump during the grounded hammer attack's landing phase. This jump will send you higher the faster you was moving before activating it. Amy also makes heavy use of powerspringing in order to do even more tricks then any other character can from a single spring. Don't forget that you can do a normal twinspin by simply pressing spin midair with no shield!

Fang's gun is the main change here, you can now use it in the air or on the ground, and you can use it at any speed. This allows him to take out tons of badniks in record times!

Metal Sonic
The vast majority of metal's changes are purely aesthetic, though there is one major gameplay alteration: He can no longer lose dashmode while airborne. Use this alongside his hover to take dashmode through areas that are normally too platforming-heavy to maintain it!

...Vanilla sonic?
Just to appease thok fans, I added the option to play as sonic, but with none of the fancy xmomentum stuff. He gets no tricks, no uncurling, no momentum, none of that jazz, just your standard thok.

Hyper Forms

As stated above, any character capable of going super is also capable of going hyper by collecting 150 rings before transforming. All hyper characters have a much higher jump height then a typical super form, faster acceleration, and their actionspeed is 2x what it normally is. Additionally, many characters have various buffs exclusive to them when they go hyper. Here's a list of various characters and what they can do.

Vanilla Characters


Hyper Sonic is able to fly, similarly to how he could in Doomsday Zone and Egg Reverie Zone. To begin flying, press spin midair. After you begin flying, press Jump to ascend, and Spin to descend. Aditionally, holding both Jump and Spin will allow you to do a boost, though you can't ascend or descend while boosting.

Hyper Tails gets infinite flight bursts. Pretty straightforward.

Hyper Knuckles no longer loses any height when gliding, can multiglide, and his glide goes significantly faster.

Hyper Amy can hover with her hammer indefinitely, and her hammer jump goes absolutely wild, allowing her to get just about anywhere in meer seconds.

Hyper Fang's popgun essentially turns into a machine gun, and his bounce is capable of going as high as a red spring, while causing a small screen nuke.

Instead of Hyper metal sonic, you get Hyper Metal Sonic!
...does nobody get the reference? I thought you guys loved the ova!
Aaaaanyways, Hyper Metal causes an armageddon shield-teir screen nuke whenever he enters dashmode, and his hover now allows him to slowly float upwards.

Modded Characters

There are a lot of these, and as such, they'll simply be getting explanations instead of their own gifs (atleast for now, may come back and update the thread later lol)

Hyper Srbii:
Multi Momentum Thok + Mini screen nukes.

Hyper Milne:
Her thoks send you significantly higher.

Hyper Ray:
Infinite gliding.

Hyper Modern Sonic:
No ring drain from flight, and mini screen nukes when you activate the boost.

Hyper Eggpack:
He can hover upwards much faster when hyper then he can when super.

Hyper Noob [TORD]:
Similarly to eggpack, he can gain much more height much more quickly when hyper.

Hyper Junio Sonic:
Infinite uses of the Bullet Dash.

Hyper Gemma:
Jumping off of a rock makes you go significantly higher

Hyper Rafael:
Free-Flight, Similar to Hyper Sonic, though Rafael has the advantage of being able to taunt while flying!

Hyper Robe:
Electric Vortex is significantly faster, and Shock Jump makes you rise way faster

Hyper Nasya:
...It's literally just super mystic nasya, lmao. Draykon requested I just give her her super mystic abilities for her hyper, and I delivered on that request :P.

And many, many more!

Hyper Flareblis
Hyper milne but less lazy lol
Hyper Feels
XMomentum: Mapper's Edition


Added a new HUD element in first person mode that appears while tricking in order to help you land tricks more easily
Fixed Amy getting screwed over by Green Snappers
Fixed Super Sonic losing his hover
Added a new trick failure sprite for Knuckles courtesy of SuperPhanto
Water Wakes are now recolored to be orange when they appear while running on lava
AltSonic now has access to the momentum half of XMomentum
Fixed Nasya randomly falling out of the sky, and gave her a hyper form
Fixed Tails' Tails not showing up while tricking
Fixed Robe getting screwed over when he enters his Hyper-Form
Fixed RollAngle resetting being too overzealous
Fixed various characters being able to cause extreme lag by going Hyper (Milne, FlyingSonic, Rabbid, Xtreme, and a few others)
Fixed VanillaSonic being able to go Hyper
Fixed Bandages being able to zoom around while charging spindash

Added tons of little things for other mods to hook into to disable various bits of XMomentum when needed

Fixed skip being able to slide around while crouching
Fixed some various bugs regarding amycopter

Fixed Fang being able to do tricks by shooting underwater
Made the hyper music loop properly (thanks zolton & yume)
Hyper Metal now rises faster
Tails can no longer turn hyper/super while flying
Made Neo Sonic actually capable of using his abilities
Fixed Hyper Sonic being able to do infinite tricks while flying if you timed it just right
Fixed a hidden character being able to crash the game

How to add XMomentum compatibility to your mods/characters

How to add Trick Failure sprites

First off, create a sprite of your character faceplanting (duh), then put it in the character's pk3 in the same place you put the rest of their normal sprites, and name it SHITALAR. After you've done that, simply put this soc into your character's SOC folder. After that, you're good to go!

Little lua bits and bobs that disable various things, enable various things, and check for various things. Thought it'd be worth documenting since a few people have asked.

Set player.hasnomomentum to true when you wish to disable momentum on a character. This is necessary when you wish to mess with the player's normalspeed, as your normalspeed is constantly overwritten by XMomentum normally.
Pretty self explanatory, simply check "if player.isxmomentum" or "if not player.isxmomentum" depending on if you want something to only run when XMomentum is loaded, or when it's not loaded. Be sure you don't use true/false with this though, as that'll cause errors if xmomentum isn't loaded.
When set to true, this will allow the player to do a short frontflip when they enter their falling state. If set to false, it disables it.
This one's a bit more complex, but I think I can explain it. Basically, hyper capable is set when you have 150+ rings, and are not super, but is never removed if you're currently hyper. Essentially, what this means is that how you detect if the player is currently hyper is by doing this:
if player.hyper and player.hyper.capable and player.powers[pw_super]
Hope I explained that one well enough lol.
When set to true, the standard hyper form music won't be played. Could either be used to give your character custom hyper music, or simply be used to stop hyper forms from causing immense lag if you already have custom super music.

CobaltBW: Original momentum mod that was used as a base for this, aswell as making the air shooting sprites for fang.
Kwiin: Tons of help with figuring out how abilities should work, and general ideas.
Starlight/XStatic: Hyper Metal Sonic's really cool power aura
ArtBunny: Water-Running trail sprites. If it wasn't for you, water running wouldn't look nearly as cool.
Bloops: Coding in the water-running trail. You and artbunny did a damned good job with those wakes.
DrStephen: The incredibly hillarious trick failure sprites. Those things are gorgeous.
Knuckles' new trick failure sprite that was added in v1.2. No offense to steph, but this looks way better then the old one.

Tatsuru, SMS Alfredo, and many others from both srb2 discords: Help with fixing my poorly coded scripts lmao

The entirety of Team BlackRock: Help with beta testing. You all gave so many great ideas, found so many issues, and just were in general a blast to collaborate with. Thank you all so much.

Download Now

File Type: pk3 VCL_XMomentum-v1.2.pk3 (4.48 MB, 9663 views)


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Old 10-21-2020   #22
GrayAngel's Avatar

I just played around with this a bit. Super Flickies are compatible with Super Tails, but they don't spawn with Hyper Tails. Oh well.

Overall, I think the way you handled Hyper forms. Something about the way Hyper Sonic looks seems different to me with this on, but I'm not entirely sure what it is. Maybe it's the afterimages? I like that you can't transform from Super to Hyper. If you want Hyper, you just have to hold off on transforming until you have 150 rings. I personally would also double the speed of the ring drain, given how ridiculously OP these transformations are. I think it would help balance things out a bit. At least for Hyper Sonic, since he's the most powerful of them with that free flight of his and screen nuking boost.

Is that little hop Fang does when shooting intentional? It looks a little odd when at a stand still.

Amy's new moveset creates a bit of a problem with shield abilities. As a no-spin character, she can't just jump on enemies, but has to swing her hammer to do damage. But now that her double jump is the helicopter ability, you can't simply swing your hammer when you have a shield. I tried swinging my hammer with a Force Shield and just ended up taking damage instead. Also, I've found the hammer jump a bit hard to pull off successfully.

Hyper Metal Sonic seems like the least powerful Hyper form. At least to me. I think he could use a little something extra.

I tried out the new Tails, and I think the overhaul to his flight is...interesting. I don't hate it, but I don't love it either. I understand that Tails is OP with his vanilla flight, but I think I prefer it that way. He's just a lot less precise this way. Also, noticed the Tails bot still uses vanilla flight. Maybe that was intentional, but I was going to test how the new flight worked with Sonic, if it made him less useful.

I'm not really fond of the new colors. The lack of black lines and shadows makes them feel a little off. Also, purple Amy? Meh.

If I could, I would keep the changes to the thok, Hyper Sonic, and the physics, but the rest is a bit of a mixed bag to me, personally.

Last edited by GrayAngel; 10-21-2020 at 09:06 PM.
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Old 10-21-2020   #23
edgyman rev
ssnpet yooo
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Can't wait to try this mod out! Saw it on discord so, I bet it'll be good!
goes by edgyman rev on discord and netgames
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Old 10-21-2020   #24
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I don't know if this is just me, but whenever i try using this all the character's sprites turn green? but not vanilla sonic i tried without any of my mods, and without, both of them just made them green
what the hell is a sonic
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Old 10-21-2020   #25
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Originally Posted by Amphany View Post
I don't know if this is just me, but whenever i try using this all the character's sprites turn green? but not vanilla sonic i tried without any of my mods, and without, both of them just made them green
you're playing on an older version of srb2. you MUST be playing at least 2.2.5 for the custom skincolours to work.
that being said, you're probably using the browser version if you're playing 2.2.4, which isn't ideal, since that hasn't been updated to the latest release.
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Old 10-21-2020   #26
The Danganronpa Guy ._.XD
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Awesome mod you did Frostiikin
"As long as there exists seeds of hope. I'll glady kill a person, and glady die myself."
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Old 10-21-2020   #27
Aquatic Akito
The Super Mystic Guardian
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Yup, you can be a microwave as well. I dunno why, but you can. And I love it.

A person who tries to be cool all the time.
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Old 10-21-2020   #28
a fan of Cybershell lol.
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You're DANG right that's impresive.

This lua is the good stuff nlg.
Zoo Wee Mama!
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Old 10-22-2020   #29
Ninja ZombieYoshi

Interesting mod. I think there's a few odd interactions though.
Water doesn't seem to affect momentum like it should. Amy's hammer jump can send you flying if you use it in GF1s many pools, and her Amycopter move and Sonic's momentum thok sends you flying forward faster than it should underwater. And one bit that is for SURE a bug is that you can detonate the Armageddon Shield while using Amy's Amycopter. This also sends you soaring through the sky, with your speed depending on how many bots you hit.
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Old 10-22-2020   #30
Shapeshifter Boi
Call me Neon
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Tails already has sprites for this i believe, all that needs to be done is make states specifically showing his continue frames.

Also, anyone see any resemblence here? Better Super Forms?
Blue Tails has no model too, simple job really, just give him the same model but with an altered texture.
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Old 10-22-2020   #31
Jaco Boy
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This mod is really good! Although I did encounter a few issues. When you use the latest version of the mecha sonic mod and go hyper with mecha, it instantly causes the games framerate to slow to a crawl. Around 5 or less. But it goes back to 35 fps right after mecha loses the hyper form. When ray goes hyper, trying to soar down makes him go backwards.
Universal super form supporter
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Old 10-22-2020   #32
Pyrakid Wolfo
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Amy who can already reach great heights fast with the hammer bounce) gets a thok. I am not kidding, the hammer move ***feels*** like a thok, probably because it functions the same way other than a small hover. It even redirects momentum and gives you a speed boost at the start of the move. Might be slightly slower than the thok, but only slightly because i couldn't tell a difference while testing. Literally could not.

And the amy copter makes you go so high in the air whyyyy
The man who's made 10 HUD mods with a small amount of installs and comments.

Last edited by Pyrakid Wolfo; 10-24-2020 at 12:41 AM.
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Old 10-22-2020   #33
Hi I Exist
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Very Fun Mod. I'm glad I was able to contribute to the project in some way. Kinda sad that "unused script" couldn't work properly but Models should work just fine with the mod.
You can't call a mistake a mistake, if it wasn't called.
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Old 10-22-2020   #34
Pyrakid Wolfo
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[SPOILER] Ah fuck, I can't believe you've done this. [SPOILER\]
The man who's made 10 HUD mods with a small amount of installs and comments.
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Old 10-22-2020   #35
Mr. Macho
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Default I don't think this is intended

Water skimming sprites show at mach speed on lava
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Old 10-22-2020   #36
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Instead of his normal flight, tails gains three upwards "Bursts" that don't take away any speed. These allow him to skip major chunks of levels, but don't directly aid him in gaining or redirecting speed in any way. Additionally, you can also tap spin for a quick downwards burst, which is useful for getting around various bits of level geometry that may be right in your way. You can also hold spin for a normal fast-fall.
Oh wow, Tails is basically Propeller Sonic now.
Knuckles is disappointed in your failures.
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Old 10-22-2020   #37
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This is goooooooood!

One problem, however.. Blueshoes doesn’t work.
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Old 10-22-2020   #38
[A person in a place]
Contest Winner
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Originally Posted by Nev3r
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Old 10-22-2020   #39
Robert Akio

I have just one thing to say about this mod. I love Amys hammer bounce ability. It's something I just find to be so cool to use. Like, I think it's safe to say modders are making her closer to how she is in Advance with her moves. Also, the hammer thok or Amycopter as it's called is a good way to get momentum for the hammer bounce.
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Old 10-22-2020   #40
so i exist
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Originally Posted by Kwiin View Post
What how did you get honey?
your epic here is your chocy milk
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Old 10-22-2020   #41
[A person in a place]
Contest Winner
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Black Rock's dev discord
Originally Posted by Nev3r
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