130 replies to this topic

[Exylex]

I haven't used Game Maker for quite a while now, and therefore it's kinda out of date. If someone is willing to share me an uptodate version for me to put on the first post, it would be apreciated... credit would ofcourse be given.

• Title: Exylex Car Engine 2.1
• Description: "GTA-like" vehicle physics with collisions, drifting and AI using ExtremePhysics.
• GM Version: GM 8
• Registered: Yes & No
• File Type: .gmk & .exe
• File Size: 54 kb(heavy gmk) 230 kb(small gmk) 2 mb(heavy exe)
• File Link: 2.2 heavy GMK | 2.2 heavy executable

Additional Info:

Download the executable to try it without installing ExtremePhysics!

Heavy version:
The heavy version uses ExtremePhysics. You need to download, install and select the .gex or use the dll for projects using the car scripts. You'll need to import EP scripts when using the dll. While taking up more space, this version provides better car handling and collisions.
Downloads: 2.2 heavy .gmk (gm8)2.2 heavy, executable

Small version
The small version is using GM code only and is for users with GM lite. The biggest difference from heavy is collisions where hitting solid objects isn't as smooth and other collisions non-existent (car-car). This version still needs lots of work.
Downloads: 2.1 Small .gmk

Old versions:1.2 Pro [33kb]1.2 Lite [195kb]

Q&A Heavy:
Q:Unknown function or script! A: You need to have ExtremePhysics installed and selected, dll or extension.
Q:Wrong number of arguments! A: Use the latest version of ExtremePhysics
Q:Use DLL instead of extension? A: Yes, then you need to import scripts from 'ExtremePhysics.gml' and call extremephysics_init();.
Q:Unknown variable define_ep_world_create! A: Call extremephysics_init(); before using EP scripts. (DLL only)

todo:

• Acceleration/break drift[both]
• Smarter AI [both]
• Gears[both]
• .gm7 version[both]
• Better collisions[Small]

Edited by Exylex, 13 September 2012 - 01:58 PM.

[CrazyTM]

its cool.. i like the trails and the collision effects ... didnt find any bugs so far.

nice ,.. simple to understand .

this will make some new top down race games i can feel it

[fredcobain]

Excellent! Very Nice!

I think the best we got here!

Congrats!

=)

[Exylex]

Thanks CrazyTM & fredcobain. I hope someone would plan to use this in a game.
If that's the case i might spend some time fixing some things.

* Improve wall collisions
* Add vehicle - vehicle collisions
* Making it more flexible.

So a shout or two and i might improve the scripts.

Edited by Exylex, 04 February 2010 - 06:07 PM.

[peter john]

Thats really a neat work!!.

[pk_3270]

good job.... very well implemented..........

[mac_joe]

very Good example for me to start off with a racing game ....Helpful..Physics are pretty good ..

Congrats ...


Thanks....

[fredcobain]

Thanks CrazyTM & fredcobain. I hope someone would plan to use this in a game.
If that's the case i might spend some time fixing some things.

* Improve wall collisions
* Add vehicle - vehicle collisions
* Making it more flexible.

So a shout or two and i might improve the scripts.

I really believe it worth you spend some time with that.

This way you'll probably create the best engine for the category.

=)

If you want suggestions, I think it would be more funny if the handbrake makes a real "slide" behavior for the vehicle. like NFS series where you can even do the curves holding the hand-brake.

The way you implemented it just stops brutally the vehicle.

I'll will probably use your engine to start something.

Congrats again.

Fred.

[js_123]

woh its a gud one......impressed with wall collisions, vehicle collisions like these
Making it more flexible and easy to play........

[Exylex]

Thanks CrazyTM & fredcobain. I hope someone would plan to use this in a game.
If that's the case i might spend some time fixing some things.

* Improve wall collisions
* Add vehicle - vehicle collisions
* Making it more flexible.

So a shout or two and i might improve the scripts.

I really believe it worth you spend some time with that.

This way you'll probably create the best engine for the category.

=)

If you want suggestions, I think it would be more funny if the handbrake makes a real "slide" behavior for the vehicle. like NFS series where you can even do the curves holding the hand-brake.

The way you implemented it just stops brutally the vehicle.

I'll will probably use your engine to start something.

Congrats again.

Fred.

Yeah, sounds good. Gonna check out some car games for the right "game" behaviour.
I've started experimenting for the perfect collision handling.
But have other things besides this that i'm working on, so it might take some time

Edited by Exylex, 05 February 2010 - 05:00 PM.

[RamboFox]

Very nice engine you have there - but I find a few flaws with how you choose to use variables instead of GameMaker's built-in motion functions.
Interacting with other objects that use speed, and make them bounce against the car can become problematic.

Also, the steering is not responsive enough - you need to have some editable variables that allow the user to change how quickly the car steers without having to edit the scripts (not within the car object, but the scripts in the script folder)

One final thing that I'd like to point out is that the car feels like it's stuck in first gear, and is over-revving the wheels.

Apart from those minor niggles, I would like to admit that I had great fun in driving it around, and into the walls, and grin in delight as I see it deflect/turn/slide against the wall as a real car should.
Only once did I manage to break the game by going on an angle to a block, and drive half-way through it, only to slide back out of it.

Keep working on this, and it will be by far the best vehicle physics I have found on the gmc! *thumbsup*

[DarkLopo]

Wow, this is brilliant!
Nice, i have motivation to make own racing game now
5/5

[Exylex]

Thanks darkLopo & RamboFox.

I usually don't use inbuilt variables becouse i feel like i lose control (0-360 wrapping, 'speed' automaticly increase speed while i want to use a x+ y+ system, image_angle not avaible for lite users and so on). However, i did as you said in the new update.

Nearly spent the whole day on the update... (most on a system where i had collisionchecking points all over the car, just to discover another better method the last minute ).

Everything is mostly rewriten. Collision system work like it should and user can easier change car attributes via the init script.

Thanks again for the feedback RamboFox

Edited by Exylex, 06 February 2010 - 11:10 PM.

[alexduuu]

This is the best by far, but it does need some work. For example: When I'm driving backwards and hit a wall, I accelerate

[Exylex]

This is the best by far, but it does need some work. For example: When I'm driving backwards and hit a wall, I accelerate

Thanks
New update, fixed that along with some other bugs. Added break power input.

Edited by Exylex, 07 February 2010 - 02:05 PM.

[RamboFox]

I've checked the update, and I see you've edited the drift physics so that it has become much more drivable, and that's a great improvement (and it's wonderful to see members respond to suggestions).

Testing the collision engine this time however, it seems that it won't rotate/slide off the wall (it would stick/bump against the wall rather than rotate/slide off it).

Edited by RamboFox, 09 February 2010 - 09:58 PM.

[Exylex]

Testing the collision engine this time however, it seems that it won't rotate/slide off the wall (it would stick/bump against the wall rather than rotate/slide off it).

Personal preference

As you probably noticed i added a link to your collision topic for extended functionality.
Haven't had so much time to play around with it to combine the two, but i'm sure anyone will
find your work perfect for a project that need better collisions then my work can offer.

Edited by Exylex, 09 February 2010 - 10:57 PM.

[RamboFox]

Alright, but I can tell you certain people won't be so kind when they find that they bounce against walls ;D

Yep, I wanted to code a collision system that prevents objects from getting stuck, and decided that it would be best for me to list a couple of games that seem obviously helpful if you're going to use the collision engine

Edited by RamboFox, 09 February 2010 - 10:44 PM.

[Devilfromhost12]

Very Nice. This should help me some time.

[DarkLopo]

Okay, i've worked with a racing car game (side-project) and i wasn't sure, how you increase the max speed, but the acceleration is smaller.
Sometimes it just screwed up, the brakes didn't work while changing acceleration, and sometimes it accelerate so fast, that the skid's made a broken line, and it was strange when i burned, then the skid's made a tractor's wheel shape. Well, so that's not bad actually...

I suggest you add these to it
-Gears
-Available to buy some new mechanism, like motor or brakes, it would be very cool cause i am not sure how to modify those scripts.
(Actually i tried but i screwed, like i said earlier. )

Otherwise, still i think this is the one coolest example here