Adding Text Mesh Pro, new enemies, new enemy waves, new HUD functionality, New animators, a retry function, and floating text for gold earned and lives lost.

Assets/_Project/Scripts/UI/FloatingText.cs

@@ -0,0 +1,75 @@
+// Assets/_Project/Scripts/UI/FloatingText.cs
+using TMPro;
+using UnityEngine;
+
+namespace TD.UI
+{
+    /// <summary>
+    /// One-shot world-space text that floats upward and fades out, then destroys itself.
+    /// Spawned by <see cref="FloatingTextSpawner"/> for kill-reward and life-loss feedback.
+    /// </summary>
+    /// <remarks>
+    /// <b>Prefab setup:</b> a GameObject with a <c>TextMeshPro</c> (3D, NOT TextMeshProUGUI)
+    /// component as a child or root, this script, and no Canvas required — TMP renders in
+    /// world space natively. The text auto-billboards toward the main camera each frame.
+    ///
+    /// Lifetime, float speed, and fade are tuned on the prefab. The spawner only sets
+    /// content + color.
+    /// </remarks>
+    public class FloatingText : MonoBehaviour
+    {
+        [Tooltip("The TextMeshPro component that renders the text. Auto-located in children " +
+                 "if left empty.")]
+        [SerializeField] private TMP_Text text;
+
+        [Tooltip("World units per second the text drifts upward.")]
+        [SerializeField] private float floatSpeed = 1.5f;
+
+        [Tooltip("Seconds the text remains visible before the GameObject is destroyed.")]
+        [SerializeField] private float lifetime = 1.2f;
+
+        private float elapsed;
+        private Color baseColor;
+
+        /// <summary>Sets content and color. Call once immediately after Instantiate.</summary>
+        public void Init(string content, Color color)
+        {
+            if (text == null) text = GetComponentInChildren<TMP_Text>();
+            if (text != null)
+            {
+                text.text  = content;
+                text.color = color;
+            }
+            baseColor = color;
+            elapsed   = 0f;
+        }
+
+        private void Update()
+        {
+            elapsed += Time.deltaTime;
+            if (elapsed >= lifetime)
+            {
+                Destroy(gameObject);
+                return;
+            }
+
+            // Drift upward.
+            transform.position += Vector3.up * floatSpeed * Time.deltaTime;
+
+            // Fade alpha linearly from 1 → 0 over the lifetime.
+            if (text != null)
+            {
+                float alpha = 1f - (elapsed / lifetime);
+                var c = baseColor;
+                c.a = alpha;
+                text.color = c;
+            }
+
+            // Billboard to the main camera. Using the camera's forward (rather than
+            // position-difference) keeps the text upright even when the camera tilts.
+            var cam = Camera.main;
+            if (cam != null)
+                transform.rotation = Quaternion.LookRotation(cam.transform.forward);
+        }
+    }
+}