feat: migrate JavaScript files to TypeScript, enhancing type safety and maintainability across the codebase

src/skills/Skill.ts

@@ -0,0 +1,48 @@
+import type { Entity } from '../core/Entity.ts';
+import type { Engine } from '../core/Engine.ts';
+import { ComponentType } from '../core/Constants.ts';
+import type { Skills } from '../components/Skills.ts';
+
+/**
+ * Base class for all skills in the game.
+ */
+export class Skill {
+  id: string;
+  name: string;
+  cooldown: number;
+  description: string;
+
+  /**
+   * @param id - Unique identifier for the skill
+   * @param name - Display name of the skill
+   * @param cooldown - Cooldown duration in seconds
+   */
+  constructor(id: string, name: string, cooldown = 2.0) {
+    this.id = id;
+    this.name = name;
+    this.cooldown = cooldown;
+    this.description = '';
+  }
+
+  /**
+   * Activate the skill's effects.
+   * @param _caster - Entity using the skill
+   * @param _engine - Game engine
+   * @returns Whether skill was successfully activated
+   */
+  activate(_caster: Entity, _engine: Engine): boolean {
+    return false;
+  }
+
+  /**
+   * Check if the skill can be used by the caster.
+   * @param caster - The caster entity
+   * @param _engine - Game engine
+   * @returns True if the skill is not on cooldown
+   */
+  canUse(caster: Entity, _engine: Engine): boolean {
+    const skills = caster.getComponent<Skills>(ComponentType.SKILLS);
+    if (!skills) return false;
+    return !skills.isOnCooldown(this.id);
+  }
+}