magic powers refactor WIP

Assets/Scripts/Characters/Skills/ScanSpell.cs

@@ -0,0 +1,52 @@
+using System.Collections;
+using UnityEngine;
+using UnityEngine.VFX;
+
+namespace Beyond
+{
+    [CreateAssetMenu(menuName = "Magic/Spells/Scan")]
+    public class ScanSpell : SpellDefinition
+    {
+        public GameObject effectPrefab;
+        public float maxRange = 50f;
+        public float scanDuration = 2f; // time for wave to travel
+        public float startDelay = 0.6f;
+
+        public override void Cast(MagicAttacks caster, Transform target)
+        {
+            caster.StartCoroutine(CastRoutine(caster));
+        }
+
+        private IEnumerator CastRoutine(MagicAttacks caster)
+        {
+            yield return new WaitForSeconds(startDelay);
+            // Instantiate visual
+            GameObject instance = Instantiate(effectPrefab, caster.transform.position, Quaternion.identity);
+            VisualEffect vfx = instance.GetComponent<VisualEffect>();
+            if (vfx) vfx.Play();
+
+            // Shader Logic
+            float speed = maxRange / scanDuration;
+            float timer = 0f;
+
+            while (timer < scanDuration)
+            {
+                Shader.SetGlobalFloat("_WaveTime", speed * timer);
+                timer += Time.deltaTime;
+                yield return null;
+            }
+            Shader.SetGlobalFloat("_WaveTime", 0f);
+
+            // Detection Logic
+            int mask = 1 << LayerMask.NameToLayer("Triggers") | 1 << LayerMask.NameToLayer("HiddenObject");
+            var colliders = Physics.OverlapSphere(caster.transform.position, maxRange, mask);
+            foreach (var c in colliders)
+            {
+                var h = c.gameObject.GetComponent<IScannable>();
+                if (h != null) h.OnScanned();
+            }
+
+            Destroy(instance);
+        }
+    }
+}