refactor modules

Assets/Station46/Scripts/Emission.cs

@@ -0,0 +1,71 @@
+using NaughtyAttributes;
+using UnityEngine;
+
+namespace Station46.Runtime
+{
+    /// <summary>
+    /// A general component for controlling the emission of an object.
+    /// </summary>
+    public class Emission : MonoBehaviour
+    {
+        private static readonly int EmissionColorNameID = Shader.PropertyToID("_EmissionColor");
+        
+        [Tooltip("The colour of the emission.")]
+        [ColorUsage(false, true)]
+        public Color color;
+        [BoxGroup("Internal")] [Required]
+        public MeshRenderer emissionRenderer;
+        
+        /// <summary>
+        /// Whether the emission is on.
+        /// </summary>
+        internal bool active;
+        
+        private bool _previousActive;
+        private Color _previousColor;
+        private Material _material;
+
+        private void Awake()
+        {
+            _material = emissionRenderer.material;
+        }
+
+        private void Start()
+        {
+            ChangedToggle();
+            ChangedColor();
+        }
+
+        private void Update()
+        {
+            if (_previousActive != active)
+            {
+                ChangedToggle();
+                _previousActive = active;
+            }
+            
+            if (!_previousColor.Equals(color))
+            {
+                ChangedColor();
+                _previousColor = color;
+            }
+        }
+
+        private void ChangedToggle()
+        {
+            if (active)
+            {
+                _material.EnableKeyword("_EMISSION");
+            }
+            else
+            {
+                _material.DisableKeyword("_EMISSION");
+            }
+        }
+        
+        private void ChangedColor()
+        {
+            _material.SetColor(EmissionColorNameID, color);
+        }
+    }
+}