Robot animation functionalities

Purpose

The purpose of robot animation is to simulate the real robot to enhance the visual experience of the game and make the game more playable. In addition, the attack area will be extended when the animation of the robot changed.

Design

Implementation

Key components

• robot.atlas This file sets up different animation effects for obstacles.
• ObstacleAnimationController This class listens to events relevant to the obstacle state and plays the animation when one of the events is triggered.
• ObstacleFactory Implement the animation effect for robot within createRobot().

Usage

1. In robot.atlas write the atlas of the animation based on the robot_animation.png.

robot_animation.png
size: 5418, 2501
format: RGBA8888
filter: Nearest,Nearest
repeat: none
float
  rotate: false
  xy: 116, 0
  size: 834, 1140
  orig: 834, 1140
  offset: 0, 0
  index: 0
float
  rotate: false
  xy: 116, 0
  size: 834, 1140
  orig: 834, 1140
  offset: 0, 0
  index: 0
float
  rotate: false
  xy: 116, 0
  size: 834, 1140
  orig: 834, 1140
  offset: 0, 0
  index: 0
float
  rotate: false
  xy: 950, 0
  size: 834, 1140
  orig: 834, 1140
  offset: 0, 0
  index: 1
float
  rotate: false
  xy: 1784, 0
  size: 834, 1140
  orig: 834, 1140
  offset: 0, 0
  index: 2
float
  rotate: false
  xy: 2618, 0
  size: 834, 1140
  orig: 834, 1140
  offset: 0, 0
  index: 3
...

2. Add the animation when creating the robot obstacle.

  public static Entity createRobot(Entity target) {
    RobotConfig config = configs.robot;
    AITaskComponent aiComponent =
            new AITaskComponent()
                    .addTask(new WanderTask(new Vector2(10f, 0f), 0f));

    AnimationRenderComponent animator =
            new AnimationRenderComponent(
                    ServiceLocator.getResourceService()
                            .getAsset("images/robot.atlas", TextureAtlas.class));
    animator.addAnimation("float", 0.5f, Animation.PlayMode.LOOP);

    Entity robot =
            new Entity()
                    .addComponent(new PhysicsComponent())
                    .addComponent(new PhysicsMovementComponent())
                    .addComponent(new ColliderComponent().setLayer(PhysicsLayer.OBSTACLE))
                    .addComponent(new HitboxComponent().setLayer(PhysicsLayer.NPC))
                    .addComponent(new TouchAttackComponent(PhysicsLayer.PLAYER, 0f))
                    .addComponent(aiComponent);

    robot.addComponent(new CombatStatsComponent(config.health, config.baseAttack))
            .addComponent(animator)
            .addComponent(new ObstacleAnimationController());
    robot.getComponent(PhysicsComponent.class).setBodyType(BodyType.DynamicBody);
    robot.scaleHeight(1f);
    return robot;
  }

UML