Chemical Structure Material Texture (#14)

src/main/java/gregtech/api/unification/material/Material.java

@@ -5,6 +5,8 @@
 import gregtech.api.fluids.FluidState;
 import gregtech.api.fluids.store.FluidStorageKey;
 import gregtech.api.fluids.store.FluidStorageKeys;
+import gregtech.api.gui.resources.TextureArea;
+import gregtech.api.gui.widgets.ImageWidget;
 import gregtech.api.unification.Element;
 import gregtech.api.unification.Elements;
 import gregtech.api.unification.material.info.MaterialFlag;
@@ -451,6 +453,22 @@ public MaterialRegistry getRegistry() {
         return GregTechAPI.materialManager.getRegistry(getModid());
     }
 
+    @Nullable
+    public TextureArea getChemicalStructureTextureArea() {
+        Preconditions.checkArgument(hasProperty(PropertyKey.CHEMICAL_STRUCTURE),
+                "does not have PropertyKey.CHEMICAL_STRUCTURE!");
+        return ChemicalStructureProperty.getMoleculeTexture(this);
+    }
+
+    @Nullable
+    public ImageWidget getChemicalStructureWidget(int x, int y) {
+        Preconditions.checkArgument(hasProperty(PropertyKey.CHEMICAL_STRUCTURE),
+                "does not have PropertyKey.CHEMICAL_STRUCTURE!");
+        ChemicalStructureProperty property = this.getProperty(PropertyKey.CHEMICAL_STRUCTURE);
+        return ChemicalStructureProperty.getChemicalStructureWidget(this, x, y, property.textureHeight(),
+                property.textureWidth());
+    }
+
     /**
      * @since GTCEu 2.0.0
      */
@@ -1105,6 +1123,14 @@ public Builder physicalProperties(PhysicalProperties.Builder builder) {
             return this;
         }
 
+        public Builder chemicalStructureTexture(int textureHeight, int textureWidth) {
+            Preconditions.checkArgument(textureHeight > 0 && textureWidth > 0,
+                    "textureHeight and textureWidth must be > 0");
+            properties.setProperty(PropertyKey.CHEMICAL_STRUCTURE,
+                    new ChemicalStructureProperty(textureHeight, textureWidth));
+            return this;
+        }
+
         // TODO Clean this up post 2.5 release
         @Deprecated
         public Builder addDefaultEnchant(Enchantment enchant, int level) {

src/main/java/gregtech/api/unification/material/properties/ChemicalStructureProperty.java

@@ -0,0 +1,29 @@
+package gregtech.api.unification.material.properties;
+
+import gregtech.api.gui.resources.TextureArea;
+import gregtech.api.gui.widgets.ImageWidget;
+import gregtech.api.unification.material.Material;
+
+import com.github.bsideup.jabel.Desugar;
+import org.jetbrains.annotations.NotNull;
+
+@Desugar
+public record ChemicalStructureProperty(int textureHeight, int textureWidth) implements IMaterialProperty {
+
+    @Override
+    public void verifyProperty(MaterialProperties properties) {
+        properties.ensureSet(PropertyKey.CHEMICAL_STRUCTURE, true);
+    }
+
+    @NotNull
+    public static TextureArea getMoleculeTexture(Material material) {
+        return TextureArea.fullImage(
+                String.format("textures/chemicalstructure/%s.png", material.getResourceLocation().getPath()));
+    }
+
+    @NotNull
+    public static ImageWidget getChemicalStructureWidget(Material material, int x, int y, int height, int width) {
+        TextureArea tx = getMoleculeTexture(material);
+        return new ImageWidget(x, y, width, height, tx);
+    }
+}

src/main/java/gregtech/api/unification/material/properties/PropertyKey.java

@@ -19,6 +19,8 @@ public class PropertyKey<T extends IMaterialProperty> {
     public static final PropertyKey<WoodProperty> WOOD = new PropertyKey<>("wood", WoodProperty.class);
     public static final PropertyKey<PhysicalProperties> PHYSICAL_PROPERTIES = new PropertyKey<>(
             "physical_properties", PhysicalProperties.class);
+    public static final PropertyKey<ChemicalStructureProperty> CHEMICAL_STRUCTURE = new PropertyKey<>(
+            "physical_properties", ChemicalStructureProperty.class);
 
     // Empty property used to allow property-less Materials without removing base type enforcement
     public static final PropertyKey<EmptyProperty> EMPTY = new PropertyKey<>("empty", EmptyProperty.class);