103 lines
2.6 KiB
JavaScript
103 lines
2.6 KiB
JavaScript
EntityCollection.prototype.attack = function(unit)
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{
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var unitId;
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if (typeOf(unit) === "Entity"){
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unitId = unit.id();
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}else{
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unitId = unit;
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}
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Engine.PostCommand({"type": "walk", "entities": this.toIdArray(), "target": unitId, "queued": false});
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return this;
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};
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function EntityCollectionFromIds(gameState, idList){
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var ents = {};
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for (var i in idList){
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var id = idList[i];
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if (gameState.entities._entities[id]) {
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ents[id] = gameState.entities._entities[id];
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}
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}
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return new EntityCollection(gameState.ai, ents);
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}
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EntityCollection.prototype.attackMove = function(x, z){
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Engine.PostCommand({"type": "attack-move", "entities": this.toIdArray(), "x": x, "z": z, "queued": false});
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return this;
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};
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// Do naughty stuff to replace the entity collection constructor for updating entity collections
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var tmpEntityCollection = function(baseAI, entities, filter, gameState){
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this._ai = baseAI;
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this._entities = entities;
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if (filter){
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var tmp = 3;
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this.filterFunc = filter;
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this._entities = this.filter(function(ent){
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return filter(ent, gameState);
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})._entities;
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this._ai.registerUpdate(this);
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}
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// Compute length lazily on demand, since it can be
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// expensive for large collections
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// This is updated by the update() function.
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this._length = undefined;
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Object.defineProperty(this, "length", {
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get: function () {
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if (this._length === undefined)
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{
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this._length = 0;
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for (var id in entities)
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++this._length;
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}
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return this._length;
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}
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});
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};
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tmpEntityCollection.prototype = new EntityCollection;
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EntityCollection = tmpEntityCollection;
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// Keeps an EntityCollection with a filter function up to date by watching for events
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EntityCollection.prototype.update = function(gameState, events){
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if (!this.filterFunc)
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return;
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for (var i in events){
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if (events[i].type === "Create"){
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var ent = gameState.getEntityById(events[i].msg.entity);
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if (ent){
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var raw_ent = ent._entity;
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if (ent && this.filterFunc(ent, gameState)){
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this._entities[events[i].msg.entity] = raw_ent;
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if (this._length !== undefined)
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this._length ++;
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}
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}
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}else if(events[i].type === "Destroy"){
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if (this._entities[events[i].msg.entity]){
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delete this._entities[events[i].msg.entity];
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if (this._length !== undefined)
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this._length --;
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}
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}
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}
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};
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EntityCollection.prototype.getCentrePosition = function(){
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var sumPos = [0, 0];
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var count = 0;
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this.forEach(function(ent){
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if (ent.position()){
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sumPos[0] += ent.position()[0];
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sumPos[1] += ent.position()[1];
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count ++;
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}
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});
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if (count === 0){
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return undefined;
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}else{
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return [sumPos[0]/count, sumPos[1]/count];
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}
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}; |