text: #pragma once
  
  /*
  
  Commonly used constant object ids
  
  */
  
  const int INVALID_OBJ = -1;
  const int INVALID_IDX = -2;
  const int PLAYER = 0;
  
  const int SPACE = 100;
  
  const int WALL_OBJ = 51;
  const int EXIT_OBJ = 52;
  const int AGENT_OBJ = 53;
  
  const int EXPLOSION = 54;
  const int EXPLOSION2 = 55;
  const int EXPLOSION3 = 56;
  const int EXPLOSION4 = 57;
  const int EXPLOSION5 = 58;
  const int TRAIL = 59;
  
  const int DOOR_OBJ = 200;
  const int KEY_OBJ = 300;