feat: Player & Camera

Assets/_Content/Scripts/Characters/Player.cs

@@ -0,0 +1,140 @@
+using Arena.Combat;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+namespace Arena.Characters
+{
+    public class Player : MonoBehaviour, IDamageable
+    {
+        [System.Serializable]
+        private class Settings
+        {
+            [Tooltip("Movement speed, in km/h.")]
+            public float Speed = 10;
+        }
+
+        [System.Serializable]
+        private struct References
+        {
+            public CharacterController Controller;
+            public InputActionReference MoveAction;
+        }
+
+        [System.Serializable]
+        public class StateContainer
+        {
+            public bool IsMoving = false;
+        }
+
+        #region FIELDS
+
+        public static Player Instance { get; private set; }
+
+        const float KMH_TO_MS = 1 / 3.6f;
+
+        [SerializeField] private Settings _settings;
+        [SerializeField] private References _references;
+        [SerializeField] private StateContainer _state;
+        [SerializeField] private Health _health;
+
+        public StateContainer State => _state;
+
+        private Vector2 _moveInput;
+        private Camera _camera;
+
+        #endregion
+
+        #region UNITY LIFECYCLES
+
+        void Awake()
+        {
+            if (Instance && Instance != this)
+            {
+                Debug.LogWarning($"A second Player was found on {name}, it is destroyed.");
+                Destroy(gameObject);
+                return;
+            }
+
+            Instance = this;
+
+            _health.Initialize();
+
+            _camera = Camera.main;
+        }
+
+        void OnEnable()
+        {
+            _references.MoveAction.action.Enable();
+        }
+
+        void OnDisable()
+        {
+            if (Instance == this)
+                _references.MoveAction.action.Disable();
+        }
+
+        void OnDestroy()
+        {
+            if (Instance == this)
+                Instance = null;
+        }
+
+        void Update()
+        {
+            if (_health.IsDead)
+                return;
+
+            float t = Time.deltaTime;
+
+            GetInputs();
+            Move(t);
+        }
+
+        #endregion
+
+        #region Public Methods
+
+        public void TakeDamage(int amount)
+        {
+            _health.TakeDamage(amount);
+        }
+
+        #endregion
+
+        #region Private Methods
+
+#if UNITY_EDITOR
+        [ContextMenu("Debug/Take 25 Damage")]
+        private void DebugTakeDamage()
+        {
+            TakeDamage(25);
+        }
+#endif
+
+        private void GetInputs()
+        {
+            _moveInput = _references.MoveAction.action.ReadValue<Vector2>();
+        }
+
+        private void Move(float t)
+        {
+            Vector3 direction = ToWorldDirection(_moveInput);
+            Vector3 velocity = direction * KMH_TO_MS * _settings.Speed;
+
+            _state.IsMoving = velocity.sqrMagnitude > .01f;
+
+            _references.Controller.Move(velocity * t);
+        }
+
+        private Vector3 ToWorldDirection(Vector2 input)
+        {
+            // Only the camera rotation around the vertical axis is kept
+            Quaternion cameraHeading = Quaternion.Euler(0f, _camera.transform.eulerAngles.y, 0f);
+            return cameraHeading * new Vector3(input.x, 0f, input.y);
+        }
+
+        #endregion
+
+
+    }
+}