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):

var damage: float = config.get_value("combat", "base_damage", 10.0)
var speed: float = stats_resource.movement_speed * delta

Incorrect (hardcoded):

var damage: float = 25.0   # VIOLATION: hardcoded gameplay value
var speed: float = 5.0      # VIOLATION: not from config, not using delta