src/WallCell.cpp

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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/>.
*/

#include "WallCell.h"

#include <GL/glut.h>

#include "Constants.h"
#include "Image.h"

GLuint WallCell::_tex_name = 0;

GLuint WallCell::getTexName() {
  if(_tex_name == 0) {
    Image texture("./textures/WallCell.bmp");
    _tex_name = texture.genTexture2D();
  }

  return _tex_name;
}

WallCell::WallCell() {

}

WallCell::~WallCell() {

}

void WallCell::draw() {
  glMatrixMode(GL_MODELVIEW);
  glColor3ub((GLubyte) COLOR_MAX,
             (GLubyte) COLOR_MAX,
             (GLubyte) COLOR_MAX);

  // extinction des lumière pour la face supérieure
  glDisable(GL_LIGHTING);
  // activation des textures 2D
  glEnable(GL_TEXTURE_2D);

  // changement de texture courante
  glBindTexture(GL_TEXTURE_2D, getTexName());

  // affichage de la face supérieure
  glBegin(GL_TRIANGLE_STRIP);
    glNormal3f(0.0, 1.0, 0.0);
    glTexCoord2f(0.0, 1.0);
    glVertex3f(-0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT, -0.5 * CELL_SIZE);
    glTexCoord2f(0.0, 0.0);
    glVertex3f(-0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT,  0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 1.0);
    glVertex3f( 0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT, -0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 0.0);
    glVertex3f( 0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT,  0.5 * CELL_SIZE);
  glEnd();

  // réactivation des lumières
  glEnable(GL_LIGHTING);

  // affichage des cotés du mur
  glBegin(GL_TRIANGLE_STRIP);
    glNormal3f(1.0, 0.0, 0.0);
    glTexCoord2f(0.0, 1.0);
    glVertex3f( 0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT, -0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 1.0);
    glVertex3f( 0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT,  0.5 * CELL_SIZE);
    glTexCoord2f(0.0, 0.0);
    glVertex3f( 0.5 * CELL_SIZE, 0.0, -0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 0.0);
    glVertex3f( 0.5 * CELL_SIZE, 0.0,  0.5 * CELL_SIZE);
  glEnd();
  glBegin(GL_TRIANGLE_STRIP);
    glNormal3f(-1.0, 0.0, 0.0);
    glTexCoord2f(0.0, 1.0);
    glVertex3f(-0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT, -0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 1.0);
    glVertex3f(-0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT,  0.5 * CELL_SIZE);
    glTexCoord2f(0.0, 0.0);
    glVertex3f(-0.5 * CELL_SIZE, 0.0, -0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 0.0);
    glVertex3f(-0.5 * CELL_SIZE, 0.0,  0.5 * CELL_SIZE);
  glEnd();
  glBegin(GL_TRIANGLE_STRIP);
    glNormal3f(0.0, 0.0, 1.0);
    glTexCoord2f(0.0, 1.0);
    glVertex3f(-0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT,  0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 1.0);
    glVertex3f( 0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT,  0.5 * CELL_SIZE);
    glTexCoord2f(0.0, 0.0);
    glVertex3f(-0.5 * CELL_SIZE, 0.0,  0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 0.0);
    glVertex3f( 0.5 * CELL_SIZE, 0.0,  0.5 * CELL_SIZE);
  glEnd();
  glBegin(GL_TRIANGLE_STRIP);
    glNormal3f(0.0, 0.0, -1.0);
    glTexCoord2f(0.0, 1.0);
    glVertex3f(-0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT, -0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 1.0);
    glVertex3f( 0.5 * CELL_SIZE, (GLfloat) WALL_HEIGHT, -0.5 * CELL_SIZE);
    glTexCoord2f(0.0, 0.0);
    glVertex3f(-0.5 * CELL_SIZE, 0.0, -0.5 * CELL_SIZE);
    glTexCoord2f(1.0, 0.0);
    glVertex3f( 0.5 * CELL_SIZE, 0.0, -0.5 * CELL_SIZE);
  glEnd();

  // désactivation des textures
  glDisable(GL_TEXTURE_2D);
}

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