#include "rectangle.h"
#include "gpl_assert.h"

#ifdef __APPLE__
#include <OpenGL/gl.h>
#else
#include <GL/gl.h>
#endif

Rectangle::Rectangle() : Game_object(/* red = */ 1.0,
                                           /* green = */ 0.0,
                                           /* blue = */ 0.0
                                      )
{
        m_rotation = 0;
        register_member_variable("rotation", &m_rotation);
        m_object_type_name = "Rectangle"; 
}

/* virtual */ void 
Rectangle::build_display_list()
{
    assert(m_display_list);

    glNewList(m_display_list, GL_COMPILE);
    glMatrixMode(GL_MODELVIEW);
    glPushMatrix();
    if (m_rotation != 0)
    {
        double center_x = m_x + m_w/2.0;
        double center_y = m_y + m_h/2.0;
        glTranslated(center_x, center_y, 0);
        glRotated(m_rotation, 0, 0, 1);
        glTranslated(-center_x, -center_y, 0);
    }

    glColor3f(m_red, m_green, m_blue);
    glBegin(GL_QUADS);
        glVertex2i(m_x, m_y);
        glVertex2i(m_x + m_w, m_y);
        glVertex2i(m_x + m_w, m_y + m_h);
        glVertex2i(m_x, m_y + m_h);
    glEnd();
    glPopMatrix();
    glEndList();
}