node-haxball/examples/plugins/jitterModePlugin.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 { OperationType, VariableType, ConnectionState, AllowFlags, Direction, CollisionFlags, CameraFollow, BackgroundType, GamePlayState, Callback, Utils, Room, Replay, Query, Library, RoomConfig, Plugin, Renderer, Errors, Language, Impl } = API;
  
    Object.setPrototypeOf(this, Plugin.prototype);
    Plugin.call(this, "Jitter Mode", false, {
      version: "0.1",
      author: "Luks",
      description: `This plugin will make you jitter in circle.`,
      allowFlags: AllowFlags.JoinRoom | AllowFlags.CreateRoom
    });
  
  
    this.defineVariable({
      name: "moveInterval",
      description: "How fast to move",
      type: VariableType.Number,
      value: 15,
      range: {
        min: 0,
        step: 5
      }
    });
  
    var that = this, interval, active = false;
    this.onKeyDown = function(e){
      if (e.code=="KeyZ") active = !active
    }
    function jitterCircle(jitterInt){
  
          const keyStates = [
        API.Utils.keyState(1, 0, false),  // Right
        API.Utils.keyState(0, -1, false), // Down
        API.Utils.keyState(-1, 0, false), // Left
        API.Utils.keyState(0, 1, false)   // Up
      ];
      
      let index = 0; 
      
      interval = setInterval(() => {
        if(!active) return
        if(!that.active) return
        that.room.setKeyState(keyStates[index]);
  
        index = (index + 1) % keyStates.length; 
      }, jitterInt); 
    }
  
    this.initialize = () => {
      jitterCircle(that.moveInterval)
    };
  
    this.finalize = () => {
      that = null;
      clearInterval(interval);
      interval = null;
    };
  
    this.onVariableValueChange = (addonObject, variableName, oldValue, newValue) => {
      if (addonObject == that && variableName == "moveInterval") {
        clearInterval(interval);
        interval = null;
        jitterCircle(newValue)
      }
    };
  
  }