#include <SDL/SDL.h>
#include <GL/gl.h>
#include <GL/glu.h>

#include "types.h"


GLuint ballDL, bumperDL, paddleDL;

GLfloat bumperColors[BUMPER_COLORS][3] = {{1.0f, 0.0f, 0.0f},
					  {0.0f, 1.0f, 0.0f},
					  {0.0f, 0.0f, 1.0f},
					  {0.5f, 0.5f, 0.5f}};


void initGL()
{
    GLfloat ambient[] = {0.5f, 0.5f, 0.5f, 1.0f};
    GLfloat diffuse[] = {1.0f, 1.0f, 1.0f, 1.0f};
    GLfloat position[] = {0.0f, 0.0f, 2.0f, 1.0f};

    SDL_Init( SDL_INIT_VIDEO );
    
    SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 8 );
    SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 8 );
    SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 8 );
    
    SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 8 );
    SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
    
    SDL_SetVideoMode( 800, 600, 24, SDL_OPENGL | SDL_HWSURFACE );

    glViewport( 0, 0, 800, 600 );
    
    glMatrixMode( GL_PROJECTION );
    glLoadIdentity();
    gluPerspective( 45.0f, 800.0f/600.0f, 0.1f, 100.0f );

    glMatrixMode( GL_MODELVIEW );
    glLoadIdentity();


    glShadeModel( GL_SMOOTH );
    glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
    glClearDepth( 1.0f );
    glEnable( GL_DEPTH_TEST );
    glDepthFunc( GL_LEQUAL );
    glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );

    glLightfv( GL_LIGHT1, GL_AMBIENT, ambient );
    glLightfv( GL_LIGHT1, GL_DIFFUSE, diffuse );
    glLightfv( GL_LIGHT1, GL_POSITION, position );
    
    glEnable( GL_LIGHT1 );
}

void initModels()
{
    ballDL = glGenLists( 3 );
    bumperDL = ballDL + 1;
    paddleDL = ballDL + 2;

    glNewList( ballDL, GL_COMPILE );


    GLfloat twothirds = PINBALL_RADIUS * (2.0f/3.0f);
    GLfloat rootthree = PINBALL_RADIUS / (1.7320508f);
   
    GLfloat ttrt = twothirds / (1.7320508f);

    glBegin( GL_TRIANGLE_FAN );
    {
	glVertex3f( 0.0f, 0.0f, PINBALL_RADIUS );
	glVertex3f( 0.0f, twothirds, twothirds );
	glVertex3f( ttrt, ttrt, twothirds );

	glVertex3f( twothirds, 0.0f, twothirds );
	glVertex3f( ttrt, -ttrt, twothirds );
	glVertex3f( 0.0f, -twothirds, twothirds );

	glVertex3f( -ttrt, -ttrt, twothirds );
	glVertex3f( -twothirds, 0.0f, twothirds );
	glVertex3f( -ttrt, ttrt, twothirds );

	glVertex3f( 0.0f, twothirds, twothirds );
    }
    glEnd();

    glBegin( GL_QUAD_STRIP );
    {
	glVertex3f( 0.0f, twothirds, twothirds );
	glVertex3f( 0.0f, PINBALL_RADIUS, 0.0f );
	
	glVertex3f( ttrt, ttrt, twothirds );
	glVertex3f( rootthree, rootthree, 0.0f );

	glVertex3f( twothirds, 0.0f, twothirds );
	glVertex3f( PINBALL_RADIUS, 0.0f, 0.0f );

	glVertex3f( ttrt, -ttrt, twothirds );
	glVertex3f( rootthree, -rootthree, 0.0f );

	glVertex3f( 0.0f, -twothirds, twothirds );
	glVertex3f( 0.0f, -PINBALL_RADIUS, 0.0f );

	glVertex3f( -ttrt-, -ttrt, twothirds );
	glVertex3f( -rootthree, -rootthree, 0.0f );
	
	glVertex3f( -twothirds, 0.0f, twothirds );
	glVertex3f( -PINBALL_RADIUS, 0.0f, 0.0f );

	glVertex3f( -ttrt, ttrt, twothirds );
	glVertex3f( -rootthree, rootthree, 0.0f );

	glVertex3f( 0.0f, twothirds, twothirds );
	glVertex3f( 0.0f, PINBALL_RADIUS, 0.0f );
    }
    glEnd();
    glEndList();


    glNewList( paddleDL, GL_COMPILE );
    glBegin( GL_QUADS );
    {
	glVertex3f( -0.1f, 0.2f, 0.2f );
	glVertex3f( PADDLE_LENGTH, 0.1f, 0.2f );
	glVertex3f( PADDLE_LENGTH, -0.1f, 0.2f );
	glVertex3f( -0.1f, -0.1f, 0.2f );

	glVertex3f( -0.1f, 0.2f, 0.2f );
	glVertex3f( -0.1f, 0.2f, 0.0f );
	glVertex3f( PADDLE_LENGTH, 0.1f, 0.0f );
	glVertex3f( PADDLE_LENGTH, 0.1f, 0.2f );

	glVertex3f( PADDLE_LENGTH, 0.1f, 0.2f );
	glVertex3f( PADDLE_LENGTH, 0.1f, 0.0f );
	glVertex3f( PADDLE_LENGTH, -0.1f, 0.0f );
	glVertex3f( PADDLE_LENGTH, -0.1f, 0.2f );

	glVertex3f( -0.1f, -0.1f, 0.2f );
	glVertex3f( PADDLE_LENGTH, -0.1f, 0.2f );
	glVertex3f( PADDLE_LENGTH, -0.1f, 0.0f );
	glVertex3f( -0.1f, -0.1f, 0.0f );

	glVertex3f( -0.1f, 0.2f, 0.2f );
	glVertex3f( -0.1f, -0.1f, 0.2f );
	glVertex3f( -0.1f, -0.1f, 0.0f );
	glVertex3f( -0.1f, 0.2f, 0.0f );
    }
    glEnd();
    glEndList();

    glNewList( bumperDL, GL_COMPILE );
    glBegin( GL_TRIANGLE_FAN );
    {
	glVertex3f( 0.0f, 0.0f, 3.0f );
	
	glVertex3f( 0.0f, 2.0f, 3.0f );
	glVertex3f( 1.1547f, 1.1547f, 3.0f );
	glVertex3f( 2.0f, 0.0f, 3.0f );
	glVertex3f( 1.1547f, -1.1547f, 3.0f );
	glVertex3f( 0.0f, -2.0f, 3.0f );
	glVertex3f( -1.1547f, -1.1547f, 3.0f );
	glVertex3f( -2.0f, 0.0f, 3.0f );
	glVertex3f( -1.1547f, 1.1547f, 3.0f );
	
	glVertex3f( 0.0f, 2.0f, 3.0f );
    }
    glEnd();

    glBegin( GL_QUAD_STRIP );
    {
	glVertex3f( 0.0f, 2.0f, 3.0f );
	glVertex3f( 0.0f, 2.0f, 1.5f );
	
	glVertex3f( 1.1547f, 1.1547f, 3.0f );
	glVertex3f( 1.1547f, 1.1547f, 1.5f );

	glVertex3f( 2.0f, 0.0f, 3.0f );
	glVertex3f( 2.0f, 0.0f, 1.5f );

	glVertex3f( 1.1547f, -1.1547f, 3.0f );
	glVertex3f( 1.1547f, -1.1547f, 1.5f );

	glVertex3f( 0.0f, -2.0f, 3.0f );
	glVertex3f( 0.0f, -2.0f, 1.5f );

	glVertex3f( -1.1547f, -1.1547f, 3.0f );
	glVertex3f( -1.1547f, -1.1547f, 1.5f );

	glVertex3f( -2.0f, 0.0f, 3.0f );
	glVertex3f( -2.0f, 0.0f, 1.5f );

	glVertex3f( -1.1547f, 1.1547f, 3.0f );
	glVertex3f( -1.1547f, 1.1547f, 1.5f );

	glVertex3f( 0.0f, 2.0f, 3.0f );
	glVertex3f( 0.0f, 2.0f, 1.5f );
    }
    glEnd();
    glEndList();
}