/******************************************************************************
 * Spine Runtimes Software License
 * Version 2
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * You are granted a perpetual, non-exclusive, non-sublicensable and
 * non-transferable license to install, execute and perform the Spine Runtimes
 * Software (the "Software") solely for internal use. Without the written
 * permission of Esoteric Software, you may not (a) modify, translate, adapt or
 * otherwise create derivative works, improvements of the Software or develop
 * new applications using the Software or (b) remove, delete, alter or obscure
 * any trademarks or any copyright, trademark, patent or other intellectual
 * property or proprietary rights notices on or in the Software, including
 * any copy thereof. Redistributions in binary or source form must include
 * this license and terms. THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE
 * "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 ESOTERIC SOFTARE 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.
 *****************************************************************************/

#ifndef SPINE_ANIMATIONSTATE_H_
#define SPINE_ANIMATIONSTATE_H_

#include <spine/Animation.h>
#include <spine/AnimationStateData.h>
#include <spine/Event.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
	ANIMATION_START, ANIMATION_END, ANIMATION_COMPLETE, ANIMATION_EVENT
} spEventType;

typedef struct spAnimationState spAnimationState;

typedef void (*spAnimationStateListener) (spAnimationState* state, int trackIndex, spEventType type, spEvent* event,
		int loopCount);

typedef struct spTrackEntry spTrackEntry;
struct spTrackEntry {
	spTrackEntry* next;
	spTrackEntry* previous;
	spAnimation* animation;
	int/*bool*/loop;
	float delay, time, lastTime, endTime, timeScale;
	spAnimationStateListener listener;
	float mixTime, mixDuration;
};

struct spAnimationState {
	spAnimationStateData* const data;
	float timeScale;
	spAnimationStateListener listener;
	void* context;

	int trackCount;
	spTrackEntry** tracks;
};

/* @param data May be 0 for no mixing. */
spAnimationState* spAnimationState_create (spAnimationStateData* data);
void spAnimationState_dispose (spAnimationState* self);

void spAnimationState_update (spAnimationState* self, float delta);
void spAnimationState_apply (spAnimationState* self, struct spSkeleton* skeleton);

void spAnimationState_clearTracks (spAnimationState* self);
void spAnimationState_clearTrack (spAnimationState* self, int trackIndex);

/** Set the current animation. Any queued animations are cleared. */
spTrackEntry* spAnimationState_setAnimationByName (spAnimationState* self, int trackIndex, const char* animationName,
		int/*bool*/loop);
spTrackEntry* spAnimationState_setAnimation (spAnimationState* self, int trackIndex, spAnimation* animation, int/*bool*/loop);

/** Adds an animation to be played delay seconds after the current or last queued animation, taking into account any mix
 * duration. */
spTrackEntry* spAnimationState_addAnimationByName (spAnimationState* self, int trackIndex, const char* animationName,
		int/*bool*/loop, float delay);
spTrackEntry* spAnimationState_addAnimation (spAnimationState* self, int trackIndex, spAnimation* animation, int/*bool*/loop,
		float delay);

spTrackEntry* spAnimationState_getCurrent (spAnimationState* self, int trackIndex);

#ifdef SPINE_SHORT_NAMES
typedef spEventType EventType;
typedef spAnimationStateListener AnimationStateListener;
typedef spTrackEntry TrackEntry;
typedef spAnimationState AnimationState;
#define AnimationState_create(...) spAnimationState_create(__VA_ARGS__)
#define AnimationState_dispose(...) spAnimationState_dispose(__VA_ARGS__)
#define AnimationState_update(...) spAnimationState_update(__VA_ARGS__)
#define AnimationState_apply(...) spAnimationState_apply(__VA_ARGS__)
#define AnimationState_clearTracks(...) spAnimationState_clearTracks(__VA_ARGS__)
#define AnimationState_clearTrack(...) spAnimationState_clearTrack(__VA_ARGS__)
#define AnimationState_setAnimationByName(...) spAnimationState_setAnimationByName(__VA_ARGS__)
#define AnimationState_setAnimation(...) spAnimationState_setAnimation(__VA_ARGS__)
#define AnimationState_addAnimationByName(...) spAnimationState_addAnimationByName(__VA_ARGS__)
#define AnimationState_addAnimation(...) spAnimationState_addAnimation(__VA_ARGS__)
#define AnimationState_getCurrent(...) spAnimationState_getCurrent(__VA_ARGS__)
#endif

#ifdef __cplusplus
}
#endif

#endif /* SPINE_ANIMATIONSTATE_H_ */
