Initial commit

Assets/LiveOpsExamples/Scripts/SnackSpawner.cs

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+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace LiveOpsExamples
+{
+  /// <summary>
+  /// Spawns collectible snacks at random positions inside the configured bounds,
+  /// picking a random collectible slug (moonberry/acorn/star/snack) and applying
+  /// its sprite from the library. Mirrors GameScene.spawnCollectible.
+  ///
+  /// Phaser spawn margins x∈[115,1165], y∈[118,625] px on a 1280×720 field at
+  /// 100 PPU map to x∈[-5.25,5.25], y∈[-2.65,2.42] world units (y is flipped).
+  /// </summary>
+  public class SnackSpawner : MonoBehaviour
+  {
+    private static readonly string[] CollectibleSlugs = { "moonberry", "acorn", "star", "snack" };
+
+    [SerializeField] private Snack prefab;
+    [SerializeField] private CozyCollectorSpriteLibrary library;
+    [SerializeField] private Vector2 spawnMin = new Vector2(-5.25f, -2.65f);
+    [SerializeField] private Vector2 spawnMax = new Vector2(5.25f, 2.42f);
+    [SerializeField] private Transform parent;
+
+    private readonly List<Snack> _spawned = new List<Snack>();
+
+    public SpriteRenderer Player { get; set; }
+
+    public event Action<Snack> Collected;
+
+    public Snack Spawn()
+    {
+      var slug = CollectibleSlugs[UnityEngine.Random.Range(0, CollectibleSlugs.Length)];
+      var position = new Vector3(
+        UnityEngine.Random.Range(spawnMin.x, spawnMax.x),
+        UnityEngine.Random.Range(spawnMin.y, spawnMax.y),
+        0f);
+
+      var snack = Instantiate(prefab, position, Quaternion.identity, parent);
+      var sprite = library.ForSlug(slug);
+      snack.GetComponent<SpriteRenderer>().sprite = sprite;
+      // Phaser setDisplaySize(52, 52) at 100 PPU -> 0.52 x 0.52 world units.
+      var spriteBounds = sprite.bounds.size;
+      var scale = new Vector3(0.52f / spriteBounds.x, 0.52f / spriteBounds.y, 1f);
+      snack.transform.localScale = scale;
+      // The prefab collider radius is tuned to snack.png; a circle collider's
+      // world radius scales by the largest transform axis, so retune per sprite.
+      snack.GetComponent<CircleCollider2D>().radius = 0.22f / Mathf.Max(scale.x, scale.y);
+      snack.Player = Player;
+      snack.Collected += OnSnackCollected;
+      _spawned.Add(snack);
+      return snack;
+    }
+
+    public void Clear()
+    {
+      foreach (var snack in _spawned)
+      {
+        if (snack == null)
+          continue;
+
+        snack.Collected -= OnSnackCollected;
+        Destroy(snack.gameObject);
+      }
+
+      _spawned.Clear();
+    }
+
+    private void OnSnackCollected(Snack snack)
+    {
+      snack.Collected -= OnSnackCollected;
+      _spawned.Remove(snack);
+      Collected?.Invoke(snack);
+    }
+  }
+}