PowerUpActor.java

/*
 * Copyright (C) 2016 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.android.apps.santatracker.doodles.pursuit;

import android.content.res.Resources;
import android.graphics.Canvas;
import com.google.android.apps.santatracker.doodles.shared.Actor;
import com.google.android.apps.santatracker.doodles.shared.AnimatedSprite;
import com.google.android.apps.santatracker.doodles.shared.AnimatedSprite.AnimatedSpriteListener;
import com.google.android.apps.santatracker.doodles.shared.Sprites;

/**
 * A power up that speeds up the player.
 */
public class PowerUpActor extends Actor {
  private static final int Z_INDEX = 0;
  public static final float RADIUS_WORLD = 25f;

  private boolean isPickedUp;

  private AnimatedSprite sprite;

  public PowerUpActor(float x, float y, Resources resources) {
    zIndex = Z_INDEX;
    position.x = x;
    position.y = y;
    isPickedUp = false;

    sprite = AnimatedSprite.fromFrames(resources, Sprites.running_powerup);
    sprite.setFPS(18);
    sprite.setAnchor(sprite.frameWidth / 2, sprite.frameHeight / 2);
    sprite.setLoop(false);
    sprite.addListener(new AnimatedSpriteListener() {
      @Override
      public void onFinished() {
        super.onFinished();
        hidden = true;
      }
    });
  }

  @Override
  public void update(float deltaMs) {
    super.update(deltaMs);
    if (isPickedUp) {
      sprite.update(deltaMs);
    }
  }

  public void pickUp() {
    isPickedUp = true;
  }

  public boolean isPickedUp() {
    return isPickedUp;
  }

  @Override
  public void draw(Canvas canvas) {
    super.draw(canvas);
    if (hidden) {
      return;
    }
    float framesPercent = ((float) sprite.getFrameIndex()) / sprite.getNumFrames();
    sprite.setPosition(position.x, position.y + (3f * framesPercent * scale * sprite.frameHeight));
    sprite.setScale(scale, scale);
    sprite.draw(canvas);
  }
}