Add initial project files and configurations for Unity setup

Assets/Scripts/Core/Domain/Tile.cs

@@ -0,0 +1,60 @@
+using System;
+
+namespace Core.Domain
+{
+    public class Tile
+    {
+        public string Id { get; }
+        public int Floor { get; }
+        
+        public TileState CurrentState { get; private set; }
+
+        private readonly float _warningDuration;
+        private readonly float _fallingDuration;
+        
+        private float _stateTimer;
+        
+        public event Action<Tile> OnStateChanged;
+
+        public Tile(string id, int floor, float warningDuration, float fallingDuration)
+        {
+            Id = id;
+            Floor = floor;
+            
+            _warningDuration = warningDuration;
+            _fallingDuration = fallingDuration;
+            CurrentState = TileState.Stable;
+        }
+
+        public void StepOn()
+        {
+            if (CurrentState == TileState.Stable)
+            {
+                TransitionTo(TileState.Warning);
+            }
+        }
+
+        public void Tick(float deltaTime)
+        {
+            if (CurrentState == TileState.Stable || CurrentState == TileState.Destroyed) return;
+            
+            _stateTimer += deltaTime;
+            
+            if (CurrentState == TileState.Warning && _stateTimer >= _warningDuration)
+            {
+                TransitionTo(TileState.Falling);
+            }
+            else if (CurrentState == TileState.Falling && _stateTimer >= _fallingDuration)
+            {
+                TransitionTo(TileState.Destroyed);
+            }
+        }
+
+        private void TransitionTo(TileState newState)
+        {
+            CurrentState = newState;
+            _stateTimer = 0f;
+            OnStateChanged?.Invoke(this);
+        }
+    }
+}