phaser4-rex-plugins
Version:
377 lines (307 loc) • 12 kB
JavaScript
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.rexpathfollowerplugin = factory());
})(this, (function () { 'use strict';
var EventEmitterMethods = {
setEventEmitter(eventEmitter, EventEmitterClass) {
if (EventEmitterClass === undefined) {
EventEmitterClass = Phaser.Events.EventEmitter; // Use built-in EventEmitter class by default
}
this._privateEE = (eventEmitter === true) || (eventEmitter === undefined);
this._eventEmitter = (this._privateEE) ? (new EventEmitterClass()) : eventEmitter;
return this;
},
destroyEventEmitter() {
if (this._eventEmitter && this._privateEE) {
this._eventEmitter.shutdown();
}
return this;
},
getEventEmitter() {
return this._eventEmitter;
},
on() {
if (this._eventEmitter) {
this._eventEmitter.on.apply(this._eventEmitter, arguments);
}
return this;
},
once() {
if (this._eventEmitter) {
this._eventEmitter.once.apply(this._eventEmitter, arguments);
}
return this;
},
off() {
if (this._eventEmitter) {
this._eventEmitter.off.apply(this._eventEmitter, arguments);
}
return this;
},
emit(event) {
if (this._eventEmitter && event) {
this._eventEmitter.emit.apply(this._eventEmitter, arguments);
}
return this;
},
addListener() {
if (this._eventEmitter) {
this._eventEmitter.addListener.apply(this._eventEmitter, arguments);
}
return this;
},
removeListener() {
if (this._eventEmitter) {
this._eventEmitter.removeListener.apply(this._eventEmitter, arguments);
}
return this;
},
removeAllListeners() {
if (this._eventEmitter) {
this._eventEmitter.removeAllListeners.apply(this._eventEmitter, arguments);
}
return this;
},
listenerCount() {
if (this._eventEmitter) {
return this._eventEmitter.listenerCount.apply(this._eventEmitter, arguments);
}
return 0;
},
listeners() {
if (this._eventEmitter) {
return this._eventEmitter.listeners.apply(this._eventEmitter, arguments);
}
return [];
},
eventNames() {
if (this._eventEmitter) {
return this._eventEmitter.eventNames.apply(this._eventEmitter, arguments);
}
return [];
},
};
const SceneClass = Phaser.Scene;
var IsSceneObject = function (object) {
return (object instanceof SceneClass);
};
var GetSceneObject = function (object) {
if ((object == null) || (typeof (object) !== 'object')) {
return null;
} else if (IsSceneObject(object)) { // object = scene
return object;
} else if (object.scene && IsSceneObject(object.scene)) { // object = game object
return object.scene;
} else if (object.parent && object.parent.scene && IsSceneObject(object.parent.scene)) { // parent = bob object
return object.parent.scene;
} else {
return null;
}
};
const GameClass = Phaser.Game;
var IsGame = function (object) {
return (object instanceof GameClass);
};
var GetGame = function (object) {
if ((object == null) || (typeof (object) !== 'object')) {
return null;
} else if (IsGame(object)) {
return object;
} else if (IsGame(object.game)) {
return object.game;
} else if (IsSceneObject(object)) { // object = scene object
return object.sys.game;
} else if (IsSceneObject(object.scene)) { // object = game object
return object.scene.sys.game;
}
};
const GetValue$1 = Phaser.Utils.Objects.GetValue;
class ComponentBase {
constructor(parent, config) {
this.setParent(parent); // gameObject, scene, or game
this.isShutdown = false;
// Event emitter, default is private event emitter
this.setEventEmitter(GetValue$1(config, 'eventEmitter', true));
// Register callback of parent destroy event, also see `shutdown` method
if (this.parent) {
if (this.parent === this.scene) { // parent is a scene
this.scene.sys.events.once('shutdown', this.onEnvDestroy, this);
} else if (this.parent === this.game) { // parent is game
this.game.events.once('shutdown', this.onEnvDestroy, this);
} else if (this.parent.once) { // parent is game object or something else
this.parent.once('destroy', this.onParentDestroy, this);
}
// bob object does not have event emitter
}
}
shutdown(fromScene) {
// Already shutdown
if (this.isShutdown) {
return;
}
// parent might not be shutdown yet
if (this.parent) {
if (this.parent === this.scene) { // parent is a scene
this.scene.sys.events.off('shutdown', this.onEnvDestroy, this);
} else if (this.parent === this.game) { // parent is game
this.game.events.off('shutdown', this.onEnvDestroy, this);
} else if (this.parent.once) { // parent is game object or something else
this.parent.off('destroy', this.onParentDestroy, this);
}
// bob object does not have event emitter
}
this.destroyEventEmitter();
this.parent = undefined;
this.scene = undefined;
this.game = undefined;
this.isShutdown = true;
}
destroy(fromScene) {
this.shutdown(fromScene);
}
onEnvDestroy() {
this.destroy(true);
}
onParentDestroy(parent, fromScene) {
this.destroy(fromScene);
}
setParent(parent) {
this.parent = parent; // gameObject, scene, or game
this.scene = GetSceneObject(parent);
this.game = GetGame(parent);
return this;
}
}
Object.assign(
ComponentBase.prototype,
EventEmitterMethods
);
const GetValue = Phaser.Utils.Objects.GetValue;
const Vector2 = Phaser.Math.Vector2;
const DegToRad = Phaser.Math.DegToRad;
const AngleBetween = Phaser.Math.Angle.Between;
const Linear = Phaser.Math.Linear;
class PathFollower extends ComponentBase {
constructor(gameObject, config) {
super(gameObject, { eventEmitter: false });
// No event emitter
// this.parent = gameObject;
this._t = 0;
this.pathVector = new Vector2();
this.spacePoints = undefined;
this.resetFromJSON(config);
}
resetFromJSON(o) {
this.setPath(GetValue(o, 'path', undefined));
var rotateToPath = GetValue(o, 'rotateToPath', false);
var rotationOffset = GetValue(o, 'rotationOffset', undefined);
if (rotationOffset === undefined) {
rotationOffset = DegToRad(GetValue(o, 'angleOffset', 0));
}
this.setRotateToPath(rotateToPath, rotationOffset);
var spacedPoints = GetValue(o, 'spacedPoints', false);
if (spacedPoints) {
this.setSpacedPointsMode(
GetValue(spacedPoints, 'divisions', undefined),
GetValue(spacedPoints, 'stepRate', 10)
);
} else {
this.setSpacedPointsMode(false);
}
var t = GetValue(o, 't', undefined);
if (t !== undefined) {
this.setT(t);
}
return this;
}
toJSON() {
return {
path: this.path,
t: this.t,
rotateToPath: this.rotateToPath,
rotationOffset: this.rotationOffset
};
}
setPath(path) {
this.path = path;
return this;
}
setT(t) {
this.t = t;
return this;
}
get t() {
return this._t;
}
set t(value) {
this._t = value;
this.update();
}
setRotateToPath(rotateToPath, rotationOffset) {
this.rotateToPath = rotateToPath;
this.rotationOffset = rotationOffset;
return this;
}
setSpacedPointsMode(divisions, stepRate) {
if ((!divisions) && (!stepRate)) {
this.spacePoints = undefined;
} else {
this.spacePoints = this.path.getSpacedPoints(divisions, stepRate, this.spacePoints);
// Add point at t=1
this.spacePoints.push(this.path.getPoint(1));
}
return this;
}
getPoint(t) {
if (this.spacePoints === undefined) {
return this.path.getPoint(this.t, this.pathVector);
} else {
var start = (this.spacePoints.length - 1) * t;
var index = Math.floor(start);
var p0 = this.spacePoints[index],
p1 = this.spacePoints[index + 1];
if (!p1) {
this.pathVector.x = p0.x;
this.pathVector.y = p0.y;
} else {
var remainderT = start - index;
this.pathVector.x = Linear(p0.x, p1.x, remainderT);
this.pathVector.y = Linear(p0.y, p1.y, remainderT);
}
return this.pathVector;
}
}
update() {
if (this.path === undefined) {
return;
}
var gameObject = this.parent;
var curX = gameObject.x,
curY = gameObject.y;
this.pathVector = this.getPoint(this._t);
var newX = this.pathVector.x,
newY = this.pathVector.y;
if ((curX === newX) && (curY === newY)) {
return;
}
gameObject.setPosition(newX, newY);
if (this.rotateToPath) {
gameObject.rotation = AngleBetween(curX, curY, newX, newY) + this.rotationOffset;
}
}
}
class PathFollowerPlugin extends Phaser.Plugins.BasePlugin {
constructor(pluginManager) {
super(pluginManager);
}
start() {
var eventEmitter = this.game.events;
eventEmitter.on('destroy', this.destroy, this);
}
add(gameObject, config) {
return new PathFollower(gameObject, config);
}
}
return PathFollowerPlugin;
}));