$#include "AnimationState.h"

/// %Animation instance.
class AnimationState
{
public:
    /// Construct with animated model and animation pointers.
    AnimationState(AnimatedModel* model, Animation* animation);
    /// Construct with root scene node and animation pointers.
    AnimationState(Node* node, Animation* animation);
    /// Destruct.
    ~AnimationState();
    
    /// Set start bone. Not supported in node animation mode.
    void SetStartBone(Bone* bone);
    /// Set looping enabled/disabled.
    void SetLooped(bool looped);
    /// Set blending weight.
    void SetWeight(float weight);
    /// Set time position. Does not fire animation triggers.
    void SetTime(float time);
    /// Modify blending weight.
    void AddWeight(float delta);
    /// Modify time position. %Animation triggers will be fired.
    void AddTime(float delta);
    /// Set blending layer.
    void SetLayer(unsigned char layer);
    
    /// Return animation.
    Animation* GetAnimation() const { return animation_; }
    /// Return start bone.
    Bone* GetStartBone() const;
    /// Return whether weight is nonzero.
    bool IsEnabled() const { return weight_ > 0.0f; }
    /// Return whether looped.
    bool IsLooped() const { return looped_; }
    /// Return blending weight.
    float GetWeight() const { return weight_; }
    /// Return time position.
    float GetTime() const { return time_; }
    /// Return animation length.
    float GetLength() const;
    /// Return blending layer.
    unsigned char GetLayer() const { return layer_; }
    
    /// Apply the animation at the current time position.
    void Apply();
};