ChipmunkMultiGrab.h

/* Copyright (c) 2013 Scott Lembcke and Howling Moon Software
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#import "ObjectiveChipmunk/ObjectiveChipmunk.h"

@interface ChipmunkGrab : NSObject<ChipmunkObject> {
  NSArray *_chipmunkObjects;
  
  cpVect _pos;
  cpFloat _smoothing;
  
  ChipmunkShape *_grabbedShape;
  
  id _data;
}

@property(nonatomic, readonly) cpVect pos;

@property(nonatomic, readonly) ChipmunkShape *grabbedShape;

@property(nonatomic, retain) id data;

@end


@interface ChipmunkMultiGrab : NSObject {
  ChipmunkSpace *_space;
  NSMutableArray *_grabs;
  
  cpFloat _smoothing;
  cpFloat _grabForce;
  
  cpFloat _grabFriction;
  cpFloat _grabRotaryFriction;
  cpFloat _grabRadius;
  
  cpShapeFilter filter;
  bool (^_grabFilter)(ChipmunkShape *shape);
  cpFloat (^_grabSort)(ChipmunkShape *shape, cpFloat depth);
  
  bool _pushMode, _pullMode;
  
  cpFloat _pushMass;
  cpFloat _pushFriction;
  cpFloat _pushElasticity;
  cpCollisionType _pushCollisionType;
}

@property(nonatomic, assign) cpFloat smoothing;
@property(nonatomic, assign) cpFloat grabForce;

@property(nonatomic, assign) cpShapeFilter filter;

@property(nonatomic, assign) cpGroup group;

@property(nonatomic, copy) bool (^grabFilter)(ChipmunkShape *shape);

@property(nonatomic, copy) cpFloat (^grabSort)(ChipmunkShape *shape, cpFloat depth);

@property(nonatomic, assign) cpFloat grabFriction;

@property(nonatomic, assign) cpFloat grabRotaryFriction;

@property(nonatomic, assign) cpFloat grabRadius;

@property(nonatomic, assign) bool pullMode;
@property(nonatomic, assign) bool pushMode;

@property(nonatomic, assign) cpFloat pushMass;
@property(nonatomic, assign) cpFloat pushFriction;
@property(nonatomic, assign) cpFloat pushElasticity;
@property(nonatomic, assign) cpCollisionType pushCollisionType;

@property(nonatomic, readonly) NSArray *grabs;


-(id)initForSpace:(ChipmunkSpace *)space withSmoothing:(cpFloat)smoothing withGrabForce:(cpFloat)grabForce;

-(ChipmunkGrab *)beginLocation:(cpVect)pos;

-(ChipmunkGrab *)updateLocation:(cpVect)pos;

-(ChipmunkGrab *)endLocation:(cpVect)pos;

@end