node-haxball/examples/plugins/testAnimations.js

The most powerful and lightweight API that allows you to develop your original Haxball(www.haxball.com) host, client, and standalone applications both on node.js and browser environments and also includes every possible hack and functionality that you can

module.exports = function (API) {
  const { AllowFlags, OperationType, Utils, Plugin } = API;

  Object.setPrototypeOf(this, Plugin.prototype);
  Plugin.call(this, "testAnimations", true, {
    version: "0.1",
    author: "el cono guardiola & abc",
    description: "Animations plugin.",
    allowFlags: AllowFlags.CreateRoom | AllowFlags.JoinRoom,
  });
  let shouldTrigger = {};
  let circleAnimationID = null;
  let discsArray = null;
  let lastPlayerKickBall = null;
  var f_x = (t) => -1 * (16 * Math.sin(t) ** 3);
  var f_y = (t) =>
    -1 *
    (13 * Math.cos(t) -
      5 * Math.cos(2 * t) -
      2 * Math.cos(3 * t) -
      Math.cos(4 * t));
  var fy = (t, index) => f_y(index * ((2 * Math.PI) / 50) + t * 0.003);
  var minRadius = 10,
    maxRadius = 15;

  this.initialize = () => {
    console.log("testAnimations initiated");
    //circle
    circleAnimationID = this.room.librariesMap.animations.register({
      discsAmount: 10,
      x: (t) => Math.cos(t),
      y: (t) => Math.sin(t),
      scale: (t, index) => 15,
      angle: (t, index) => 0,
      t: 0,
      tLimit: 200 * Math.PI,
      color: (t, index) =>
        (Math.floor(150 + 100 * Math.sin(t * 0.5)) << 16) |
        (Math.floor(150 + 100 * Math.sin(index * 0.5)) << 0),
      //radius: (t, index) => 10+Math.sin(0.01*t)*5
      radius: (t, index) => 10 + ((-fy(t, index) + 17) * 5) / 29,
    });

    //heart
    heartAnimationID = this.room.librariesMap.animations.register({
      discsAmount: 50,
      x: (t, index) => f_x(index * ((2 * Math.PI) / 50) + t * 0.003),
      y: fy,
      //scale: (t, index)=>(2*25/50)*Math.abs(((t-50/2)%50)-50/2)-25+40,
      scale: (t, index) => 15,
      angle: (t, index) => 0,
      t: 0,
      tLimit: 200 * Math.PI,
      color: (t, index) =>
        (Math.floor(150 + 100 * Math.sin(t * 0.5)) << 16) |
        (Math.floor(150 + 100 * Math.sin(index * 0.5)) << 0),
      //radius: (t, index) => 10+Math.sin(0.01*t)*5
      radius: (t, index) => 10 + ((-fy(t, index) + 17) * 5) / 29,
    });
  };

  this.finalize = () => {
    discsArray = null;
    circleAnimationID = null;
    console.log("testAnimations initiated");
    this.room.librariesMap.animations.unregister(circleAnimationID);
    this.room.librariesMap.animations.unregister(heartAnimationID);
  };

  this.onTeamGoal = () => {
    shouldTrigger = { value: true };
    this.room.librariesMap.animations.triggerAnimation(heartAnimationID);
    this.room.librariesMap.animations.triggerAnimation(circleAnimationID);
  };

  this.onPlayerBallKick = (playerId) => {
    lastPlayerKickBall = playerId;
  };

  this.onOperationReceived = (type, msg) => {
    if (type === OperationType.SetStadium) {
      msg.stadium = this.room.librariesMap.animations.addDiscs(
        JSON.parse(Utils.exportStadium(msg.stadium))
      );
    }
    return true;
  };

  this.onGameTick = () => {
    if (shouldTrigger.value) {
      const playerProperties = this.room.getPlayerDisc(lastPlayerKickBall);
      this.room.librariesMap.animations.onGameTick(
        playerProperties.pos.x,
        playerProperties.pos.y,
        shouldTrigger
      );
    }
  };
};