feat: perishable

packages/entity/traits/perishable.trait.js

@@ -0,0 +1,32 @@
+import {compose} from '@avocado/core';
+
+import {StateProperty, Trait} from '../trait';
+
+const decorate = compose(
+);
+
+export class Perishable extends decorate(Trait) {
+
+  static defaultParams() {
+    return {
+      ttl: 300,
+    };
+  }
+
+  static type() {
+    return 'perishable';
+  }
+
+  constructor(entity, params, state) {
+    super(entity, params, state);
+    this.ttl = this.params.ttl;
+  }
+
+  tick(elapsed) {
+    this.ttl -= elapsed;
+    if (this.ttl <= 0) {
+      this.entity.destroy();
+    }
+  }
+
+}