#ifndef __NPC_H__
#define __NPC_H__

#include <lib3ds/file.h>    
#include <lib3ds/node.h>
#include "playerlocation.h"
#include "conversation.h"
#include "coursecity.h"

#define MAXTEXTSIZE 1024

class coursecity;

struct NPCState {  
  int id;    //10000 and 10001 are reserved for players
  int type;  //-1 means dead/null npc, 0+ is the type of npc
  int state; 
  int model; //index to the model list (render GL simple model for invalid index)
  int frame; //current frame for animated 3ds model, each npc has it's own count

  char *text;
  bool talking;

  vector3f loc;
  float theta, phi;
};

struct NPCModel{
  char* filename; //pathname, for dir of frames
  Lib3dsFile **files; //index from 0 to totalFrames-1
  float theta, phi;
  vector3f loc;
  float scale;
  int totalFrames;  //counting the zero frame
};

//note: the player is stored in the coursemap as an object with npcid 10000 or 10001.
//do not make npc's with these id's

class NPC{

 public:
  NPC();
  virtual ~NPC();

  void SetDefaultMaterial();
  bool Init(const char* npcFilename, conversation *conversationptr, coursecity *courseptr);
  
  void RenderModel(int modelID, int frame);
  bool RenderAll(CameraState *camera);
  int GetNumFrames(int modelID);

  void ExecuteAI();
  
  int addnpc(int type, int model, int state, vector3f position, float theta, float phi);
  bool removenpc(int npcid);

  bool doconversation(int npcid, int player);
  //start the ai by checking for conversations, returns true if that npc is busy talking
  bool KeepTalking(int npcid);
  void AIZero(int npcid);
  void AIOne(int id);

  int numChars;
  NPCState * chars;

  int numModels;
  NPCModel * models;

 private:

  Lib3dsFile* Init3DS(const char* filename);
  void Render3DSNode(Lib3dsFile *file, Lib3dsNode *node);
  void Render3DSModel (int modelID, int frame);
  void RenderSimpleModel (int modelID);

  conversation *theconversation;
  coursecity *thecoursecity;

};

#endif  // __NPC_H__