PhysicsEditor is here!!!!! « cocos2d for iPhone

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PhysicsEditor is here!!!!!

(112 posts) (44 voices)

Started 1 year ago by Andreas Loew
Latest reply from silentk

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mobilebros
Moderator

Sorry I've been a bit late on dealing with Physics Editor capability. Andreas is right about SpaceManager having a huge weakness when it comes to having one body to multiple shapes; however I've found that in most cases you actually do want access to the shapes.

That being said, I'm fairly certain you can use both the Physics Editor code along with SpaceManager, I believe the only thing that would need to change would be the "iterateFunc", the property in SpaceManager that points to the update mechanism for each shape (uh oh redundancy if multiple shapes to one body hmmm). It would have to update according the body->data field like Andreas already suggested.

I could add a 'addBody' method to SpaceManager but in 99% of cases, there are corresponding shape(s) that also need to be added, so is that a separate call or perhaps that's up to the user/pe code? It's somewhat unclear.

Anyway, I'll try to give it some thought when I get chance.

p.s. morphShapeToActive/Static does indeed "morph" the shape as well

Posted 1 year ago #
Andreas Loew
Member

@mobilebros
Thanks for the update ;-)
If you have some time we could have a short talk over skype and I could also help with the integration...

Posted 1 year ago #
Andreas Loew
Member
I released PhysicsEditor 1.0.4 today.

Improvements:
- Better tracing (with new trace mode) for rectangular and natural objects
- Tracing of animated objects, using AND or OR to merge shapes of animation phases
- Fixed GB2ShapeCache
- Fixed exporter directorya
- New icon ;-)
- Group field can now have negative numbers
- Reduced waiting time in demo mode
- Mouse cursor changes when hovering a vertex
Posted 1 year ago #
mobilebros
Moderator

@Andreas - Sorry I'm no skyper, feel free to send any PM's or emails with suggestions though.

Posted 1 year ago #
Andreas Loew
Member

I added a tutorial including example how to use PhysicsEditor and TexturePacker in one cocos2d + box2d project

Posted 11 months ago #
macknight
Member

Hi,Andreas,
I've seen the documentation of Phisics Editor. But I am confused about the frame setting.
So, what do you mean by "If you add more images to one shape in the main window"?
How can I add more images to one shape in the main window?
Do you mean by adding a spritesheet to the list window?
Looking forward to your reply~

Posted 10 months ago #
Andreas Loew
Member

You can add more images to one shape by pressing "+" on the right pane directly next to file name.

This allows you to find the best shape for an animation - since it is no good idea to create a polygon for every single animation frame. The tracer also allows you to work with animations - either creating an OR operation or AND operation over all frames.

Posted 10 months ago #
itlgames
Moderator

Hi Andreas, I recently started playing around with SpaceManager and PhysicsEditor, let me say it's a perfect combination! ideally for me at least, as I feel more comfortable with the objective-c wrapper, makes things easy to me, but I'ma bit stuck, I'm sure it's probably something wrong I'm doing, but if you check this post:

http://www.cocos2d-iphone.org/forum/topic/19010#post-112221

You will see what I'm trying to do.

Any help appreciated.

Posted 9 months ago #
Andreas Loew
Member

@itlgames: Sorry for my late answer - just saw the post now.
I guess the problem is already solved?

Posted 9 months ago #
itlgames
Moderator

Yes solved! there was a small bug, all working fine now!

Posted 9 months ago #
jptsetung
Member

@Andreas, after reorganizing the directories of my resources, I lost the images associated to the shapes in PhysicsEditor. I'm trying to link again those images to my shapes buy I think it's not supported (or didn't find it). Is there a way to do it by modifying the source file? I tried to modify the file names in the file but it broke it, there must be a check sum or something broken.

Posted 9 months ago #
Andreas Loew
Member

@jptsetung Next to the images file name is a "+" and a "-" button. Press "-" to remove the image and "+" to add a new one.
You can use the "+" to add animation phases for a sprite and see how the shape fits them.

Posted 9 months ago #
jptsetung
Member

@Andreas, ah OK, I see ti now, thx a lot :)

Posted 9 months ago #

Studder
Member

Err im kinda lost. My sprites wont interact with the shape I made with physicseditor.

I defined my collision type :
kCollisionType_Wall = 100 ,

when making the shape in physics editor I set type to 100. friction and elasticity both to 1.0. I tried setting Mass with 2 and with 50.

// load physics data
    [[GCpShapeCache sharedShapeCache]
     addShapesWithFile:@"industrialBackground1.plist"];

    // create and add sprite
    CCSprite *sprite = [CCSprite spriteWithFile:@"industrialBackground1.png"];
    sprite.position = ccp(0,210);
    [self addChild:sprite];

    // set anchor point
    sprite.anchorPoint = [[GCpShapeCache sharedShapeCache]
                          anchorPointForShape:@"industrialBackground1"];

    // create the physics shape
    cpBody *body = [[GCpShapeCache sharedShapeCache]
                    createBodyWithName:@"industrialBackground1"
                    inSpace:space
                    withData:sprite];

    // set position
    body->p = ccp(0,210);

My each shape method also tried with uncommenting the commented stuff.

static void eachShape(void *ptr, void* unused)
{
	//this method is called by the step function every frame.
	//it is used to update the chipmunk objects position.
	//basically, the objects move by themselves but the images asigned to the objects don't
	//and this is what we are doing here

	cpCircleShape *shape = (cpCircleShape*) ptr; 

    //cpShape *shape1 = (cpShape*) ptr;

    //cpBody *body = shape1->body;

    /* CCSprite *sprite1 = body->data;       // get sprite's pointer from body's user data
    if( sprite1 )
    {
        // update position and rotation
        [sprite1 setPosition: body->p];
        [sprite1 setRotation: (float) CC_RADIANS_TO_DEGREES( -body->a )];
    }*/

	CCSprite *sprite = shape->shape.data;
	if (sprite)
	{
		cpBody *body = shape->shape.body;

		//if we want a body to stop moving the sprite (like when it's shaking - bad apple , or when it's cloning
		//we do this hack. Setting the shape's elasticity to 200 and after we're done, we should change the elasticity back to 1.0
		//and position the body on the position of the image. After that, the body will resume moving the image
		if(shape->shape.e < 200)
//			[sprite.parent setPosition:cpv(body->p.x/factor - sprite.parent.contentSizeInPixels.width/(2*factor), body->p.y/factor - sprite.parent.contentSizeInPixels.height/(2*factor))];
            sprite.parent.position = ccp(body->p.x/factor , body->p.y/factor);

	}
}

And I've setting up my collisionhandler but it seems my sprites aren't colliding with the shape made by physicseditor at all :S

Posted 8 months ago #

Studder
Member

Hmm seems like I had to add Bit's name to my physics editor shape. Now to find a way to stop it from moving :-) and make it really solid.

Posted 8 months ago #
Timbo
Member

FYI I wrote a tutorial that covers using texture packer and physics editor together

Might help some people

Posted 8 months ago #
Codebrella
Member

Where can I download the Chipmunk loader (GCpShapeCache class) for PhysicsEditor? None of the links to download it work on http://www.physicseditor.de. Here are some pages with dead links:

http://www.physicseditor.de/download/
http://www.physicseditor.de/2011/03/07/chipmunk-generic-loader-chipmunk-cocos2d-demo/

Am I missing something here?

Posted 4 months ago #
Codebrella
Member

Scratch that - "There is a loader folder in the dmg file with the loaders for box2d and chipmunk." from http://www.physicseditor.de/2011/03/07/chipmunk-generic-loader-chipmunk-cocos2d-demo/ - The links should really be fixed though, it's unclear. Beautiful software though, enjoying it so far!

Posted 4 months ago #
Andreas Loew
Member

Sorry - missed that post :/ I just removed the link and pointed to the .dmg file.

Btw. there will be a complete tutorial on TexturePacker & PhysicsEditor on Ray Wenderlich's Blog. Here's a short teaser video what you are going to learn:
http://www.raywenderlich.com/monkeyjump

Posted 4 months ago #
silentk
Member
I'm getting really confused trying to figure out something, I'm create my bodies as below :
```
[[GCpShapeCache sharedShapeCache]
     addShapesWithFile:@"pieces.plist"];

    // create and add sprite
    CCSprite *sprite = [CCSprite spriteWithFile:@"piece.png"];
    sprite.position = ccp(0,210);
    [self addChild:sprite];

    // set anchor point
    sprite.anchorPoint = [[GCpShapeCache sharedShapeCache]
                          anchorPointForShape:@"piece"];

    // create the physics shape
    cpBody *body = [[GCpShapeCache sharedShapeCache]
                    createBodyWithName:@"piece"
                    inSpace:space
                    withData:sprite];

    // set position
    body->p = ccp(0,210);
```
I'm working on a jigsaw puzzle game, so when the body is in the correct place, I want to remove it from SpaceManager so it doesn't interact with anything. I'll leave the CCSprite where it is, so the puzzle piece is locked in place. The problem I'm having is how do I remove the body? Each body is made up of multiple shapes, if I remove the body with :
```
[_smgr removeAndFreeBody:body];
```
I'm left with shapes without bodies and it crashes.

Any ideas?

*Edit*

Found `cpBodyEachShape(cpBody *body, cpBodyShapeIteratorFunc func, void *data)
`

But how do I create a cpBodyShapeIteratorFunc?!
Posted 3 months ago #
slembcke
Administrator
Look in the header where it's defined. It's just a function that needs to look like this:
```
void iteratorFunc(cpShape *shape, void *data)
{
  ....
}
```
Posted 3 months ago #
silentk
Member

Great thanks, will take a look! Not sure how I missed that

Posted 3 months ago #

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