feat: add poc

src/systems/HealthRegenerationSystem.js

@@ -0,0 +1,27 @@
+import { System } from '../core/System.js';
+
+/**
+ * System to handle health regeneration
+ */
+export class HealthRegenerationSystem extends System {
+  constructor() {
+    super('HealthRegenerationSystem');
+    this.requiredComponents = ['Health'];
+    this.priority = 35;
+  }
+
+  process(deltaTime, entities) {
+    entities.forEach(entity => {
+      const health = entity.getComponent('Health');
+      if (!health || health.regeneration <= 0) return;
+
+      // Regenerate health over time
+      // Only regenerate if not recently damaged (5 seconds)
+      const timeSinceDamage = (Date.now() - health.lastDamageTime) / 1000;
+      if (timeSinceDamage > 5) {
+        health.heal(health.regeneration * deltaTime);
+      }
+    });
+  }
+}
+