35 lines
1.4 KiB
JavaScript
35 lines
1.4 KiB
JavaScript
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export class Query {
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constructor(include, exclude, world) {
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this.include = include;
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this.exclude = exclude;
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this.world = world;
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this.isDirty = true;
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this.results = new Array();
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this.includeComponentIds = include.map((component) => component.id);
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this.excludeComponentIds = exclude.map((component) => component.id);
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this.id = 0;
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}
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execute() {
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if (!this.isDirty && this.results) {
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return this.results;
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}
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let filtered;
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this.includeComponentIds = this.include.map((component) => this.world.componentNamesToIDs.get(component.name));
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this.excludeComponentIds = this.exclude.map((component) => this.world.componentNamesToIDs.get(component.name));
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const entities = this.world.entities.filter((entity) => {
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let ids = entity.getComponentIDs();
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// let includes = ids.map(id => this.includeComponentIds.includes(id)).includes(true);
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let excludes = ids
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.map((id) => this.excludeComponentIds.includes(id))
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.includes(true);
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let includes = ids.filter((id) => this.includeComponentIds.includes(id));
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return includes.length === this.includeComponentIds.length && !excludes;
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});
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if (entities.length > 0) {
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this.isDirty = false;
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this.results = entities;
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}
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return entities;
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}
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}
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