feat: add poc

src/systems/SkillEffectSystem.js

@@ -0,0 +1,41 @@
+import { System } from '../core/System.js';
+
+/**
+ * System to track and render skill effects (Fire Breath, Pounce, etc.)
+ */
+export class SkillEffectSystem extends System {
+  constructor() {
+    super('SkillEffectSystem');
+    this.requiredComponents = []; // No required components
+    this.priority = 50; // Run after skills but before rendering
+    this.activeEffects = [];
+  }
+
+  process(deltaTime, _entities) {
+    // Update all active effects
+    for (let i = this.activeEffects.length - 1; i >= 0; i--) {
+      const effect = this.activeEffects[i];
+      effect.lifetime -= deltaTime;
+      effect.time += deltaTime;
+
+      if (effect.lifetime <= 0) {
+        this.activeEffects.splice(i, 1);
+      }
+    }
+  }
+
+  /**
+     * Add a skill effect
+     */
+  addEffect(effect) {
+    this.activeEffects.push(effect);
+  }
+
+  /**
+     * Get all active effects
+     */
+  getEffects() {
+    return this.activeEffects;
+  }
+}
+