Add parser for material properties

Source/ConformalDecals/ConformalDecals.csproj

@@ -47,6 +47,7 @@
         <Compile Include="MaterialModifiers\ColorPropertyMaterialModifier.cs" />
         <Compile Include="MaterialModifiers\FloatPropertyMaterialModifier.cs" />
         <Compile Include="MaterialModifiers\MaterialModifier.cs" />
+        <Compile Include="MaterialModifiers\MaterialModifierCollection.cs" />
         <Compile Include="MaterialModifiers\TexturePropertyMaterialModifier.cs" />
         <Compile Include="ModuleConformalDecal.cs" />
         <Compile Include="Logging.cs" />

Source/ConformalDecals/MaterialModifiers/MaterialModifierCollection.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace ConformalDecals.MaterialModifiers {
+    public class MaterialModifierCollection {
+        public Shader ShaderRef { get; }
+        public TexturePropertyMaterialModifier MainTexture { get; }
+
+        private List<MaterialModifier>                _materialModifiers;
+        private List<TexturePropertyMaterialModifier> _texturePropertyMaterialModifiers;
+
+        public MaterialModifierCollection(ConfigNode node) {
+            var shaderString = node.GetValue("shader");
+
+            if (shaderString == null)
+                throw new FormatException($"Missing shader name in material");
+
+            if (shaderString == string.Empty)
+                throw new FormatException($"Empty shader name in material");
+
+            _materialModifiers = new List<MaterialModifier>();
+            _texturePropertyMaterialModifiers = new List<TexturePropertyMaterialModifier>();
+
+            //TODO: USE SHABBY PROVIDED METHOD HERE INSTEAD
+            ShaderRef = Shader.Find(shaderString);
+
+            if (ShaderRef == null) throw new FormatException($"Shader not found: {shaderString}");
+
+            foreach (ConfigNode propertyNode in node.nodes) {
+                try {
+                    MaterialModifier modifier;
+                    switch (propertyNode.name) {
+                        case "FLOAT":
+                            modifier = new FloatPropertyMaterialModifier(propertyNode);
+                            break;
+
+                        case "COLOR":
+                            modifier = new ColorPropertyMaterialModifier(propertyNode);
+                            break;
+
+                        case "TEXTURE":
+                            modifier = new TexturePropertyMaterialModifier(propertyNode);
+                            var textureModifier = modifier as TexturePropertyMaterialModifier;
+                            if (textureModifier.IsMain) {
+                                if (MainTexture != null) {
+                                    MainTexture = textureModifier;
+                                }
+                                else {
+                                    Debug.LogWarning(
+                                        $"Material texture property {textureModifier.TextureUrl} is marked as main, but material already has a main texture! \n" +
+                                        $"Defaulting to {MainTexture.TextureUrl}");
+                                }
+                            }
+
+                            _texturePropertyMaterialModifiers.Add(textureModifier);
+                            break;
+
+                        default:
+                            throw new FormatException($"Invalid property type '{propertyNode.name}' in material");
+                            break;
+                    }
+
+                    _materialModifiers.Add(modifier);
+                }
+
+                catch (Exception e) {
+                    Debug.LogError(e.Message);
+                }
+            }
+        }
+    }
+}

Source/ConformalDecals/MaterialModifiers/TexturePropertyMaterialModifier.cs

@@ -3,8 +3,8 @@ using UnityEngine;
 
 namespace ConformalDecals.MaterialModifiers {
     public class TexturePropertyMaterialModifier : MaterialModifier {
-        private readonly string    _textureURL;
-        private readonly Texture2D _texture;
+        public string TextureUrl { get; }
+        public Texture2D TextureRef { get; }
 
         private Vector2 _textureOffset;
         private Vector2 _textureScale;
@@ -16,32 +16,32 @@ namespace ConformalDecals.MaterialModifiers {
         public Rect TileRect { get; }
 
         public TexturePropertyMaterialModifier(ConfigNode node) : base(node) {
-            _textureURL = node.GetValue("textureURL");
+            TextureUrl = node.GetValue("textureURL");
 
-            var textureInfo = GameDatabase.Instance.GetTextureInfo(_textureURL);
+            var textureInfo = GameDatabase.Instance.GetTextureInfo(TextureUrl);
 
             if (textureInfo == null)
-                throw new Exception($"Cannot find texture: '{_textureURL}'");
+                throw new Exception($"Cannot find texture: '{TextureUrl}'");
 
-            _texture = IsNormal ? textureInfo.normalMap : textureInfo.texture;
+            TextureRef = IsNormal ? textureInfo.normalMap : textureInfo.texture;
 
-            if (_texture == null)
-                throw new Exception($"Cannot get texture from texture info '{_textureURL}' isNormalMap = {IsNormal}");
+            if (TextureRef == null)
+                throw new Exception($"Cannot get texture from texture info '{TextureUrl}' isNormalMap = {IsNormal}");
 
             IsNormal = ParsePropertyBool(node, "isNormalMap", true, false);
             IsMain = ParsePropertyBool(node, "isMain", true, false);
             AutoScale = ParsePropertyBool(node, "autoScale", true, false);
-            TileRect = ParsePropertyRect(node, "tileRect", true, new Rect(0, 0, _texture.width, _texture.height));
+            TileRect = ParsePropertyRect(node, "tileRect", true, new Rect(0, 0, TextureRef.width, TextureRef.height));
 
-            _textureScale.x = TileRect.width / _texture.width;
-            _textureScale.y = TileRect.height / _texture.height;
+            _textureScale.x = TileRect.width / TextureRef.width;
+            _textureScale.y = TileRect.height / TextureRef.height;
 
-            _textureOffset.x = TileRect.x / _texture.width;
-            _textureOffset.y = TileRect.y / _texture.height;
+            _textureOffset.x = TileRect.x / TextureRef.width;
+            _textureOffset.y = TileRect.y / TextureRef.height;
         }
 
         public override void Modify(Material material) {
-            material.SetTexture(_propertyID, _texture);
+            material.SetTexture(_propertyID, TextureRef);
             material.SetTextureOffset(_propertyID, _textureOffset);
             material.SetTextureScale(_propertyID, _textureScale);
         }