Initial files

Assets/Scripts/SharedBasic/Editor/ConditionalAttributes.cs

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+/* Title : Attribute for show a field if other field is true or false.
+ * Author : Anth
+*/
+using UnityEngine;
+using UnityEditor;
+
+/// <summary>
+/// Atttribute for show a field if other field is true or false.
+/// </summary>
+[System.AttributeUsage(System.AttributeTargets.Field, Inherited = false, AllowMultiple = true)]
+public sealed class ShowIfAttribute : PropertyAttribute
+{
+    public string ConditionalSourceField;
+    public bool expectedValue;
+    public bool HideInInspector;
+
+    /// <summary>
+    /// Create the attribute for show a field x if field y is true or false.
+    /// </summary>
+    /// <param name="ConditionalSourceField">name of field y type boolean </param>
+    /// <param name="expectedValue"> what value should have the field y for show the field x</param>
+    /// <param name="HideInInspector"> if should hide in the inspector or only disable</param>
+    public ShowIfAttribute(string ConditionalSourceField, bool expectedValue, bool HideInInspector = false)
+    {
+        this.ConditionalSourceField = ConditionalSourceField;
+        this.expectedValue = expectedValue;
+        this.HideInInspector = HideInInspector;
+    }
+}
+
+
+[CustomPropertyDrawer(typeof(ShowIfAttribute))]
+public class ConditionalHidePropertyDrawer : PropertyDrawer
+{
+    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+    {
+#if UNITY_EDITOR
+        ShowIfAttribute condHAtt = (ShowIfAttribute)attribute;
+        bool enabled = GetConditionalSourceField(property, condHAtt);
+        GUI.enabled = enabled;
+
+        // if is enable draw the label
+        if (enabled)
+            EditorGUI.PropertyField(position, property, label, true);
+        // if is not enabled but we want not hide it, then draw it disabled
+        else if (!condHAtt.HideInInspector)
+            EditorGUI.PropertyField(position, property, label, false);
+        // else hide it ,dont draw it
+        else return;
+#endif
+    }
+
+    public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+    {
+#if UNITY_EDITOR
+        ShowIfAttribute condHAtt = (ShowIfAttribute)attribute;
+        bool enabled = GetConditionalSourceField(property, condHAtt);
+
+        // if is enable draw the label
+        if (enabled)
+        {
+            return EditorGUI.GetPropertyHeight(property, label, true);
+        }
+        // if is not enabled but we want not hide it, then draw it disabled
+        else
+        {
+            if (!condHAtt.HideInInspector)
+                return EditorGUI.GetPropertyHeight(property, label, false);
+            // else hide it
+            else
+                return -EditorGUIUtility.standardVerticalSpacing; // Oculta el campo visualmente.
+        }
+#else
+        return 0f;
+#endif
+    }
+
+    /// <summary>
+    /// Get if the conditional what expected is true.
+    /// </summary>
+    /// <param name="property"> is used for get the value of the property and check if return enable true or false </param>
+    /// <param name="condHAtt"> is the attribute what contains the values what we need </param>
+    /// <returns> only if the field y is same to the value expected return true</returns>
+    private bool GetConditionalSourceField(SerializedProperty property, ShowIfAttribute condHAtt)
+    {
+#if UNITY_EDITOR
+        bool enabled = false;
+        string propertyPath = property.propertyPath;
+        string conditionPath = propertyPath.Replace(property.name, condHAtt.ConditionalSourceField);
+        SerializedProperty sourcePropertyValue = property.serializedObject.FindProperty(conditionPath);
+
+        if (sourcePropertyValue != null)
+        {
+            enabled = sourcePropertyValue.boolValue;
+            if (enabled == condHAtt.expectedValue) enabled = true;
+            else enabled = false;
+        }
+        else
+        {
+            string warning = "ConditionalHideAttribute: No se encuentra el campo booleano [" + condHAtt.ConditionalSourceField + "] en " + property.propertyPath;
+            warning += " Aseg<65>rate de especificar correctamente el nombre del campo condicional.";
+            Debug.LogWarning(warning);
+        }
+
+        return enabled;
+#else
+        return false;
+#endif
+    }
+}

Assets/Scripts/SharedBasic/Editor/ConditionalAttributes.cs.meta

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