Homebrew [WIP] 3DS Physics Sandbox

[PieFace]

3DS Physics Sandbox v0.3

Spoiler: v0.3 Changelog

• Added support for up to 32 squares
• Added walls, immobile objects(lines) that objects bounce off of (up to 32)
• Removed square bouncing on edges of screen (by default replaced by walls in the same locations)
• Added camera, use circle pad to move view around
• Updated UI:
  • Now contains two columns of information, global variables and object specific variables
  • Change the mod_val scope to switch between these two
  • All data of squares and walls can be modified (position, size, etc)
  • Use obj_type to change between squares and walls
  • Use curr_view to change which object you are looking at
  • Use coord to change the objects position
  • Use vel.x/y to change the square's velocity
  • Use direction to change wall's direction
  • Use length to change the objects size
  • NOTE: the program stops searching through the array when it finds the first inactive object. Add new objects in order
• Press X to reset the entire world to default
• Press B to bring the currently selected square to the center of the world
• Started modularization of code
• Collision now takes momentum into account (more realistic collisions)

Spoiler: v0.2 Changelog

• Press Y to toggle using gyroscope as gravity , or allow the square to follow tilt of 3ds
• Press select to take a screenshot (needs optimization)
• Friction now takes into account appropriate gravity, resulting in mostly increased friction at the default value
• Fixed precision bug with increment

This is an application for playing around in an environment with simple physics
Note: This is very work-in-progress and currently has limited features

Features:

• Manipulate multiple different sized squares with the stylus
• Objects will bounce off of each other
• The squares are affected by gravity, with walls and friction
• Modifiable gravity, collision elasticity, and friction values
• Collisions calculation uses momentum of squares
• Take a screenshot
• Control gravity by tilting 3ds (accelerometer)
• Move camera with circle pad
• Walls that squares will bounce off of
• different squares and walls can be made using on screen ui

Controls:

• Tap and Drag square to move it
• X - Reset entire world
• B - bring selected square back to center of world
• DPad Left and Right - Change modifiable value
• DPad Up and Down - Increment current modifiable value
• L and R - Change increment (multiply and divide by 10)
• Circle Pad - move camera
• Y - toggle gyroscope as gravity
• Select - Save screenshot
• Start - Exit

Known Bugs:

• If squares are traveling fast enough, they can clip through walls (more apparent in smaller squares)
• Sometimes squares get "crushed" against vertical walls because of x gravity

To Do:

• Fix Banner Sound (Warning: sound may be irritable)
• More than one objectDone
• Different kinds of objects (like circles or custom shapes) - See Pipe01 Fork
• Proper implementation of forces/momentum and vectors
• Tension and ropes
• Develop into physics library
• 3D physics

Spoiler: Screeshots

Spoiler: Videos

v0.3

v0.1

Spoiler: QR

NOTE: Titledb won't let me update the link so it will be outdated. Use QR code or github to download fixed

Downloads:
Binaries: https://github.com/pieface-/3dsphysicssandbox/releases
Source: https://github.com/pieface-/3dsphysicssandbox

Pipe01 made a cool fork of v0.1 that includes 10 shapes of different varieties. They do not interact with each other, however.
Download: https://www.dropbox.com/s/ackpisffvfzgwob/3dsphysicssandbox-fork.zip?dl=0
Source: http://pastebin.com/kRBM2RDj

I plan on working on this a lot in the near future so if anyone has any feature suggestions or wants to contribute otherwise feel free.

Credits
Smealum - creator of ctrulib and the homebrew menu
xerpi - creator of sf2dlib
Magical Sheep - Screenshots and video
Pipe01 - Cool fork and bug fixes

 

[SomeGamer]

Noice! I love playing around with these kinds of homebrew!

 

[_D1360_]

I just added link to www.titledb.com for easy installation, it's linked to your git.

Thanks for sharing!

 

[PieFace]

I just added link to www.titledb.com for easy installation, it's linked to your git.

Thanks for sharing!

Thank you!

 

[Deleted User]

Amazing! Could you add screenshots for future viewers too please!! Thanks SO SO SO MUCH!

 

[LiamTheHackermon]

whoa so cool

 

[Deleted User]

Heh, this is a ton of fun when I flick the cube and it goes up and down turbo fast!!

 

[Domukuro Wolfield]

Screenshots anyone?

 

[Deleted User]

Screenshots anyone?

For now, just imagine a cube that you can flick around and on the top screen, it shows that you can change the cubes velocity, Gravity, and more!!!

 

[Magical Sheep]

This is pretty cool. I think it would be nice if you added a button that reset all the values to a default, and if it's possible, have something that plays around with the gyroscope (I think that's what it is) in the 3DS.

--------------------- MERGED ---------------------------

Screenshots anyone?

Excuse the doublepost, but here's a screenshot of it. http://imgur.com/a/WQtTi (Top and bottom screens)

 

[PieFace]

This is pretty cool. I think it would be nice if you added a button that reset all the values to a default, and if it's possible, have something that plays around with the gyroscope (I think that's what it is) in the 3DS.

--------------------- MERGED ---------------------------


Excuse the doublepost, but here's a screenshot of it. http://imgur.com/a/WQtTi (Top and bottom screens)

Thanks for the screenshots; I added them to the op. Also, you can press x to clear all values. I'll reword that in the controls

 

[Urbanshadow]

I like the simplicity of it! I'd love to see it using both screens for some cool stereoscopic effects but that might ruin the feel of directly controlling the world with the touch screen.

 

[Thunder Kai]

QR please?

 

[PieFace]

I like the simplicity of it! I'd love to see it using both screens for some cool stereoscopic effects but that might ruin the feel of directly controlling the world with the touch screen.

This could happen in the future if it becomes more of a library/engine.

QR please?

added to op

 

[Magical Sheep]

Thanks for the screenshots; I added them to the op. Also, you can press x to clear all values. I'll should reword that in the controls

Alright! I can't remember doing that because I just woke up. You're welcome for the screenshots though.

 

[Deleted-379826]

Awesome, may try soon! I love things like this

 

[Urbanshadow]

This could happen in the future if it becomes more of a library/engine.

You can achieve pretty impressive things with stereoscopic 2d, but you may want to change libraries for 3d rendering and physics.

 

[YugamiSekai]

Nice! Can't wait to try it out!

 

[KiiWii]

Any videos please? I love physics based things like this

 

[PieFace]

You can achieve pretty impressive things with stereoscopic 2d, but you may want to change libraries for 3d rendering and physics.

Oh for sure. This is staying 2d for the near future though.

Any videos please? I love physics based things like this

I am working on a small update right now so I can make a video when it is finished.