添加 claude code game studios 到项目

.claude/rules/gameplay-code.md

@@ -0,0 +1,31 @@
+---
+paths:
+  - "src/gameplay/**"
+---
+
+# Gameplay Code Rules
+
+- ALL gameplay values MUST come from external config/data files, NEVER hardcoded
+- Use delta time for ALL time-dependent calculations (frame-rate independence)
+- NO direct references to UI code — use events/signals for cross-system communication
+- Every gameplay system must implement a clear interface
+- State machines must have explicit transition tables with documented states
+- Write unit tests for all gameplay logic — separate logic from presentation
+- Document which design doc each feature implements in code comments
+- No static singletons for game state — use dependency injection
+
+## Examples
+
+**Correct** (data-driven):
+
+```gdscript
+var damage: float = config.get_value("combat", "base_damage", 10.0)
+var speed: float = stats_resource.movement_speed * delta
+```
+
+**Incorrect** (hardcoded):
+
+```gdscript
+var damage: float = 25.0   # VIOLATION: hardcoded gameplay value
+var speed: float = 5.0      # VIOLATION: not from config, not using delta
+```