/*!
 * @file md_model_structure.h
 */



#ifndef _MD3_MODEL_STRUCTURE_H
#define _MD3_MODEL_STRUCTURE_H


#include "vector.h"


//! compressed vertex data: char insetead of float, the value will be expanded by the scale value. only for loading
typedef struct
{
  unsigned char    v[3];                 //!< the vector of the vertex
  unsigned char    lightNormalIndex;     //!< the index of the light normal
} sVertex;


//! compressed texture offset data: coords scaled by the texture size. Only for loading
typedef struct
{
  short            s;                    //!< the s,t coordinates of a texture
  short            t;                    //!< the s,t coordinates of a texture
} sTexCoor;


//! holds tha informations about a md2 frame
typedef struct
{
  sVec3D           scale;                //!< scales values of the model
  sVec3D           translate;            //!< translates the model
  char             name[16];             //!< frame name: something like "run32"
  sVertex          pVertices[1];         //!< first vertex of thes frame
} sFrame;


//! holds the information about a triangle
typedef struct
{
  unsigned short   indexToVertices[3];   //!< index to the verteces of the triangle
  unsigned short   indexToTexCoor[3];    //!< index to the texture coordinates
} sTriangle;



//! the command list of the md2 model, very md2 specific
typedef struct
{
  float            s;                    //!< texture coordinate 1
  float            t;                    //!< texture coordinate 2
  int              vertexIndex;          //!< index of the vertex in the vertex list
} glCommandVertex;


//! a md2 animation definition
typedef struct
{
  int              firstFrame;           //!< first frame of the animation
  int              lastFrame;            //!< last frame of the animation
  int              fps;                  //!< speed: number of frames per second
  int              bStoppable;           //!< 1 if the animation is stoppable 0 else
} sAnim;


//! animation state definition
typedef struct
{
  int              startFrame;           //!< the start frame of an animation
  int              endFrame;             //!< last frame of the animation
  int              fps;                  //!< fps of the animaion (speed)

  float            localTime;            //!< the local time
  float            lastTime;             //!< last time stamp
  float            interpolationState;   //!< the state of the animation [0..1]

  int              type;                 //!< animation type

  int              currentFrame;         //!< the current frame
  int              nextFrame;            //!< the next frame in the list
  int              numPlays;             //!< the number of times, this has been played in series

  int              animPlaybackMode;     //!< the playback mode
} sAnimState;

#endif /* _MD3_MODEL_STRUCTURE_H */