src/Display.h

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/*
This file is part of Teapot Colony Wars.

Teapot Colony Wars is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

Teapot Colony Wars is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Teapot Colony Wars.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef DISPLAY_H
#define DISPLAY_H

#include <GL/glut.h>

#include "World.h"

class Display  
{
protected:

  static Display* _instance;

  GLfloat _camera_x;
  GLfloat _camera_y;
  GLfloat _camera_z;
  GLfloat _center_x;
  GLfloat _center_y;
  GLfloat _center_z;
  GLfloat _near;
  GLfloat _far;
  GLfloat _fovy;

  World _world;

  bool _timer;

  Display();

  GLfloat focal_distance();

  void translate_camera(GLfloat inc_x, GLfloat inc_z);

  void move_camera(GLfloat inc_y);

  void zoom_camera(GLfloat inc);

  void rotate_camera(GLfloat inc);

public:

  virtual ~Display();

  static Display* instance();

  static void destroy();

  void init();

  void quit();

  void timer(int value);

  void draw();

  void reshape(int width, int height);

  void inputKey(unsigned char key, int x, int y);

  void inputMouse(int button, int state, int x, int y);
};

#endif // DISPLAY_H

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