import org.newdawn.slick.geom.Ellipse; //导入依赖的package包/类
/**
 * @see org.newdawn.slick.BasicGame#init(org.newdawn.slick.GameContainer)
 */
public void init(GameContainer container) throws SlickException {
    shapes = new ArrayList();
    rect = new Rectangle(10, 10, 100, 80);
    shapes.add(rect);
    roundRect = new RoundedRectangle(150, 10, 60, 80, 20);
    shapes.add(roundRect);
    ellipse = new Ellipse(350, 40, 50, 30);
    shapes.add(ellipse);
    circle = new Circle(470, 60, 50);
    shapes.add(circle);
    polygon = new Polygon(new float[]{550, 10, 600, 40, 620, 100, 570, 130});
    shapes.add(polygon);
    
    keys = new boolean[256];
    lastChar = new char[256];
    createPoly(200,200);
}