So I mentioned a couple weeks ago in the Ideas/Inspiration I might pick up porting Temple Run as a project...

Originally I thought I would try to use Mode7 or something, but in the end ended up making a near-complete 3d engine to work it So if I can keep the speed and figure out how to do textures as well, I might release the 3d engine as a separate useable library. The engine is really quite nice, it's all based off of a Point() routine that takes x,y,z, and a pointer and writes the x' y' values to the 4 bytes pointed to (also within the routine cameraX, cameraY, and vanishing point are controllable).


Well, it's now in a playable-enough state that I decided to make an official thread, along with a download and screenie, of course. It's still wireframe, making things kinda hard to see and some of the collisions may be glitchy, which is why I'm enlisting your help in fine-tuning it.

You are the black square (sprite coming soon!). There are no turns (yet), only holes, walls, and things to duck under. Use 2nd to jump, Alpha to duck. There is still a lot of work to do, but it's pretty cool as is already (at least I think so)

Edit: And I need a clipped line routine

3D looks cool so far!

Here is a line clipping routine for the bottom of the screen. I bet you can optimize it, that's just some ugly prototype I came up with using the similar triangles formula.

Lbl LIN
If r4>63
r1-r3→r5?r4-r2*r1//r5-64+r2*r5//(r4-r2)→r3
63→r4
End
Line(r1,r2,r3,r4)
Return

Use it just like the regular line command.

Graphics look really simular to those of my racing game. What does the engine support? Does it support rotation of camera and changes in the FOV (zooming in/out)?

Nice work, now I can finally play temple run in math class too! ^.^

Thanks everyone!

Quote from: ben_g on September 01, 2012, 01:39:38 pm

Graphics look really simular to those of my racing game. What does the engine support? Does it support rotation of camera and changes in the FOV (zooming in/out)?

It doesn't support rotation, since I won't need it for Temple Run. If I ever make a separate general-case library release, I'll probably add rotation. It doesn't currently support zooming in/out either, but that's a really easy addition to make (basically just have to change the fixed focal length value to a variable)

Well, Temple Run does have rotations at 90 degrees. I suppose you could fudge it by doing a really fast animation to another straight segment, but I'm guessing it wouldn't look quite right.

Well, Temple Run does have rotations at 90 degrees. I suppose you could fudge it by doing a really fast animation to another straight segment, but I'm guessing it wouldn't look quite right.

Woops, yeah I guess I'll have to figure that out =/

Added a poll in terms of controls. Vote!

That's pretty impressive. I would say don't go with DT's keypad-as-touchscreen control scheme, although it was very innovative, it was nigh impossible to control on my 84+.

I thought a mode 7 engine would be a good way to go, but this looks really nice too.

Graphics look really simular to those of my racing game. What does the engine support? Does it support rotation of camera and changes in the FOV (zooming in/out)?

It really reminded me of your racing game when I first saw the topic too.

Anyho, this is gonna be really cool. Personally, I'd opt for a more conventional control scheme in this case.