Init Homebase

2026-06-02 18:28:23 -07:00
parent 2ee30c01fd
commit dd0064c377
48 changed files with 1934 additions and 12 deletions
@@ -0,0 +1,62 @@
+using Unity.Entities;
+
+namespace ProjectM.Simulation
+{
+    /// <summary>
+    /// Pure, deterministic merge logic for a shared storage container's <see cref="StorageEntry"/> buffer.
+    /// No RNG / wall-clock, so server and (future) prediction agree. Deposit merges into an existing row
+    /// for the same item or appends a new row; Withdraw decrements and drops a row that hits zero, clamping
+    /// to available. DynamicBuffer is a handle, so mutations apply to the underlying entity buffer.
+    /// Unit-tested in EditMode via a plain Entities world.
+    /// </summary>
+    public static class StorageMath
+    {
+        /// <summary>Add <paramref name="count"/> of <paramref name="itemId"/>, merging into an existing row if present. No-op for count &lt;= 0 or itemId 0.</summary>
+        public static void Deposit(DynamicBuffer<StorageEntry> buffer, ushort itemId, int count)
+        {
+            if (count <= 0 || itemId == 0)
+                return;
+
+            for (int i = 0; i < buffer.Length; i++)
+            {
+                if (buffer[i].ItemId == itemId)
+                {
+                    var entry = buffer[i];
+                    entry.Count += count;
+                    buffer[i] = entry;
+                    return;
+                }
+            }
+
+            buffer.Add(new StorageEntry { ItemId = itemId, Count = count });
+        }
+
+        /// <summary>
+        /// Remove up to <paramref name="count"/> of <paramref name="itemId"/>, clamped to what is available.
+        /// Drops the row when it reaches zero. Returns the amount actually withdrawn (0 if none). No-op for
+        /// count &lt;= 0 or itemId 0.
+        /// </summary>
+        public static int Withdraw(DynamicBuffer<StorageEntry> buffer, ushort itemId, int count)
+        {
+            if (count <= 0 || itemId == 0)
+                return 0;
+
+            for (int i = 0; i < buffer.Length; i++)
+            {
+                if (buffer[i].ItemId == itemId)
+                {
+                    var entry = buffer[i];
+                    int taken = entry.Count < count ? entry.Count : count;
+                    entry.Count -= taken;
+                    if (entry.Count <= 0)
+                        buffer.RemoveAt(i);
+                    else
+                        buffer[i] = entry;
+                    return taken;
+                }
+            }
+
+            return 0;
+        }
+    }
+}