CHAPTER 12 ■ VIDEO GAMES// A reference to the row that holds the target (which
// we need to use as the ImageObserver for the sprite)
private ShootingGalleryTargetRow row;
// The sprite
private Image sprite;
// A polygon object that we use for collision detection
Polygon polygon;
// The constructor, wherein we set the values of all the things we need
public ShootingGalleryTarget(int value, Image sprite, int x, int y, ShootingGalleryTargetRow
row) {
size = sprite.getWidth(row);
this.value = value;
this.sprite = sprite;
xPosition = x;
yPosition = y;
this.row = row;
offset = (ShootingGalleryPanel.TARGET_SPACE - size) / 2;
}
// The draw method
public void draw(Graphics g) {
// Set the target's position
int x = xPosition + offset;
int y = yPosition + offset;
// Draw the sprite
g.drawImage(sprite, x, y, size, size, row);
// Create a polygon that matches the sprite
// We'll use the polygon to see if the sprite gets hit
polygon = new Polygon();
polygon.addPoint(x, y);
polygon.addPoint(x, y + size);
polygon.addPoint(x + size, y + size);
polygon.addPoint(x + size, y);
}
// Provide a way to update the vertical position
public void setY(int y) {
yPosition = y;
}
// Provide a way to get the vertical position
public int getY() {
return yPosition;
}