[Checkers] Only allow player to move their piece during their turn

src/chigame/chat/migrations/0003_alter_livechatmessagereaction_content.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.2.20 on 2025-05-20 03:05
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("chat", "0002_livechatmessagereaction"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="livechatmessagereaction",
+            name="content",
+            field=models.CharField(help_text="Up to 10 emoji characters", max_length=10),
+        ),
+    ]

src/chigame/games/fixtures/checkers-fixture.json

@@ -181,7 +181,8 @@
           1,
           0
         ]
-      ]
+      ],
+      "current_turn_player": 1
     }
   },
   {

src/chigame/games/migrations/0039_checkersboard_current_turn_player.py

@@ -0,0 +1,24 @@
+# Generated by Django 4.2.20 on 2025-05-20 03:05
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("games", "0038_merge_20250519_0011"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="checkersboard",
+            name="current_turn_player",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="current_turn_boards",
+                to="games.player",
+            ),
+        ),
+    ]

src/chigame/games/models.py

@@ -794,6 +794,10 @@ class CheckersBoard(models.Model):
     """
 
     state = models.JSONField()  # store positions/pieces as a 2D array
+    current_turn_player = models.ForeignKey(
+        "games.Player", on_delete=models.CASCADE, null=True, blank=True, related_name="current_turn_boards"
+    )
+    # state_bits = models.IntegerField() # stores positions as bits
 
     def __str__(self):
         return f"Board {self.id}"

src/chigame/games/views.py

@@ -1670,8 +1670,7 @@ def checkers_game_view(request, pk):
             [0, 1, 0, 1, 0, 1, 0, 1],
             [1, 0, 1, 0, 1, 0, 1, 0],
         ]
-        # Save first turn
-        board = CheckersBoard.objects.create(state=default_state)
+        board = CheckersBoard.objects.create(state=default_state, current_turn_player=game.player_1)
         CheckersTurn.objects.create(game=game, board=board, turn_number=1, player=game.player_1)
 
     # Determine player ID for frontend
@@ -1686,6 +1685,7 @@ def checkers_game_view(request, pk):
             "board_id": board.id,
             "player_id": player.id,
             "turn_number": turn_number,
+            "current_turn_player_id": board.current_turn_player.id if board.current_turn_player else None,
         },
     )
 
@@ -1695,25 +1695,33 @@ def checkers_game_update_board_state(request, board_id):
     try:
         board = CheckersBoard.objects.get(pk=board_id)
         new_state = request.data.get("state")
+        next_player_id = request.data.get("next_player_id")
 
-        if new_state is None:
-            return Response({"error": "Missing 'state'"}, status=status.HTTP_400_BAD_REQUEST)
+        if new_state is None or next_player_id is None:
+            return Response({"error": "Missing 'state' or 'next_player_id'"}, status=status.HTTP_400_BAD_REQUEST)
 
         board.state = new_state
+        board.current_turn_player_id = next_player_id
         board.save()
+
         return Response({"success": True})
 
     except CheckersBoard.DoesNotExist:
-        return Response({"error": "Board not found"}, status=status.HTTP_404_NOT_FOUND)
+        return Response({"error": "Board not found"}, status=404)
     except Exception as e:
-        return Response({"error": str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+        return Response({"error": str(e)}, status=500)
 
 
 @api_view(["GET"])
 def checkers_game_get_board_state(request, board_id):
     try:
         board = CheckersBoard.objects.get(pk=board_id)
-        return Response({"state": board.state})
+        return Response(
+            {
+                "state": board.state,
+                "current_turn_player_id": board.current_turn_player.id if board.current_turn_player else None,
+            }
+        )
     except CheckersBoard.DoesNotExist:
         return Response({"error": "Board not found"}, status=404)