/******************************************************************************
 * Spine Runtime Software License - Version 1.1
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms in whole or in part, with
 * or without modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. A Spine Essential, Professional, Enterprise, or Education License must
 *    be purchased from Esoteric Software and the license must remain valid:
 *    http://esotericsoftware.com/
 * 2. Redistributions of source code must retain this license, which is the
 *    above copyright notice, this declaration of conditions and the following
 *    disclaimer.
 * 3. Redistributions in binary form must reproduce this license, which is the
 *    above copyright notice, this declaration of conditions and the following
 *    disclaimer, in the documentation and/or other materials provided with the
 *    distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#import <spine/CCSkeletonAnimation.h>
#import <spine/spine-cocos2d-iphone.h>

static void callback (AnimationState* state, int trackIndex, EventType type, Event* event, int loopCount) {
	[(CCSkeletonAnimation*)state->context onAnimationStateEvent:trackIndex type:type event:event loopCount:loopCount];
}

@interface CCSkeletonAnimation (Private)
- (void) initialize;
@end

@implementation CCSkeletonAnimation

@synthesize state = _state;

+ (id) skeletonWithData:(SkeletonData*)skeletonData ownsSkeletonData:(bool)ownsSkeletonData {
	return [[[self alloc] initWithData:skeletonData ownsSkeletonData:ownsSkeletonData] autorelease];
}

+ (id) skeletonWithFile:(NSString*)skeletonDataFile atlas:(Atlas*)atlas scale:(float)scale {
	return [[[self alloc] initWithFile:skeletonDataFile atlas:atlas scale:scale] autorelease];
}

+ (id) skeletonWithFile:(NSString*)skeletonDataFile atlasFile:(NSString*)atlasFile scale:(float)scale {
	return [[[self alloc] initWithFile:skeletonDataFile atlasFile:atlasFile scale:scale] autorelease];
}

- (void) initialize {
	_state = AnimationState_create(AnimationStateData_create(_skeleton->data));
	_state->context = self;
	_state->listener = callback;
}

- (id) initWithData:(SkeletonData*)skeletonData ownsSkeletonData:(bool)ownsSkeletonData {
	self = [super initWithData:skeletonData ownsSkeletonData:ownsSkeletonData];
	if (!self) return nil;
	
	[self initialize];
	
	return self;
}

- (id) initWithFile:(NSString*)skeletonDataFile atlas:(Atlas*)atlas scale:(float)scale {
	self = [super initWithFile:skeletonDataFile atlas:atlas scale:scale];
	if (!self) return nil;
	
	[self initialize];
	
	return self;
}

- (id) initWithFile:(NSString*)skeletonDataFile atlasFile:(NSString*)atlasFile scale:(float)scale {
	self = [super initWithFile:skeletonDataFile atlasFile:atlasFile scale:scale];
	if (!self) return nil;
	
	[self initialize];
	
	return self;
}

- (void) dealloc {
	if (_ownsAnimationStateData) AnimationStateData_dispose(_state->data);
	AnimationState_dispose(_state);

	[super dealloc];
}

- (void) update:(ccTime)deltaTime {
	[super update:deltaTime];

	deltaTime *= _timeScale;
	AnimationState_update(_state, deltaTime);
	AnimationState_apply(_state, _skeleton);
	Skeleton_updateWorldTransform(_skeleton);
}

- (void) setAnimationStateData:(AnimationStateData*)stateData {
	NSAssert(stateData, @"stateData cannot be null.");
	
	if (_ownsAnimationStateData) AnimationStateData_dispose(_state->data);
	AnimationState_dispose(_state);

	_ownsAnimationStateData = true;
	_state = AnimationState_create(stateData);
	_state->context = self;
	_state->listener = callback;
}

- (void) setMixFrom:(NSString*)fromAnimation to:(NSString*)toAnimation duration:(float)duration {
	AnimationStateData_setMixByName(_state->data, [fromAnimation UTF8String], [toAnimation UTF8String], duration);
}

- (void) setDelegate:(id<CCSkeletonAnimationDelegate>)delegate {
	_delegate = delegate;
	_delegateStart = [delegate respondsToSelector:@selector(animationDidStart:track:)];
	_delegateEnd = [delegate respondsToSelector:@selector(animationWillEnd:track:)];
	_delegateEvent = [delegate respondsToSelector:@selector(animationDidTriggerEvent:track:event:)];
	_delegateComplete = [delegate respondsToSelector:@selector(animationDidComplete:track:loopCount:)];
}

- (TrackEntry*) setAnimationForTrack:(int)trackIndex name:(NSString*)name loop:(bool)loop {
	Animation* animation = SkeletonData_findAnimation(_skeleton->data, [name UTF8String]);
	if (!animation) {
		CCLOG(@"Spine: Animation not found: %@", name);
		return 0;
	}
	return AnimationState_setAnimation(_state, trackIndex, animation, loop);
}

- (TrackEntry*) addAnimationForTrack:(int)trackIndex name:(NSString*)name loop:(bool)loop afterDelay:(int)delay {
	Animation* animation = SkeletonData_findAnimation(_skeleton->data, [name UTF8String]);
	if (!animation) {
		CCLOG(@"Spine: Animation not found: %@", name);
		return 0;
	}
	return AnimationState_addAnimation(_state, trackIndex, animation, loop, delay);
}

- (TrackEntry*) getCurrentForTrack:(int)trackIndex {
	return AnimationState_getCurrent(_state, trackIndex);
}

- (void) clearTracks {
	AnimationState_clearTracks(_state);
}

- (void) clearTrack:(int)trackIndex {
	AnimationState_clearTrack(_state, trackIndex);
}

- (void) onAnimationStateEvent:(int)trackIndex type:(EventType)type event:(Event*)event loopCount:(int)loopCount {
	if (!_delegate) return;
	switch (type) {
		case ANIMATION_START:
			if (_delegateStart) [_delegate animationDidStart:self track:trackIndex];
			break;
		case ANIMATION_END:
			if (_delegateEnd) [_delegate animationWillEnd:self track:trackIndex];
			break;
		case ANIMATION_COMPLETE:
			if (_delegateComplete) [_delegate animationDidComplete:self track:trackIndex loopCount:loopCount];
			break;
		case ANIMATION_EVENT:
			if (_delegateEvent) [_delegate animationDidTriggerEvent:self track:trackIndex event:event];
			break;
	}
}

@end