CameraControllerSet.java :  » Game » jgf » net » jgf » camera » Java Open Source

package net.jgf.camera;

import java.util.HashMap;

import net.jgf.config.ConfigException;
import net.jgf.system.Jgf;

import org.apache.commons.lang.StringUtils;


/**
 * CameraControllerSet manages the camera controllers attached to an entity or other component.
 * 
 * @see CameraController
 */
public class CameraControllerSet {

  /**
   * The set of cameras hold by this CameraManager.
   */
  protected HashMap<String, CameraController> cameraControllers;

  /**
   * Class constructor.
   */
  public CameraControllerSet() {
    this.cameraControllers = new HashMap<String, CameraController>();
  }

  /**
   * Adds a camera to this CameraManager
   */
  public void addCameraController(CameraController cameraController) {
    // TODO: Check for not null/empty ids
    if (Jgf.getApp().isDebug()) {
      if (StringUtils.isBlank(cameraController.getId())) {
        throw new ConfigException("Cannot add a CameraController with a null id to a CameraControllerSet");
      }
    }
    cameraControllers.put(cameraController.getId(), cameraController);
  }

  /**
   * Returns a camera.
   */
  public CameraController getCameraController(String id) {
    return cameraControllers.get(id);
  }

}