OBJ model hotswap

changelog

@@ -21,6 +21,7 @@
 * Bullet casings now make sounds when falling to the ground
 * Most ammo types now have QMAW pages, including information on whether or not they are a war crime
 * Both assembly and chemical factories now have four special ports that only allow items inserted to go into one recipe group
+* All models using the HFR wavefront loader can now be hot-swapped via resource reload (F3 + T)
 
 # Fixed
 * Potentially fixed yet another issue regarding crates

src/main/java/com/hbm/main/ClientProxy.java

@@ -61,6 +61,7 @@ import com.hbm.render.item.ItemRenderMissileGeneric.RenderMissileType;
 import com.hbm.render.item.block.ItemRenderBlock;
 import com.hbm.render.item.block.ItemRenderDecoBlock;
 import com.hbm.render.item.weapon.*;
+import com.hbm.render.loader.HFRModelReloader;
 import com.hbm.render.loader.HmfModelLoader;
 import com.hbm.render.model.ModelPigeon;
 import com.hbm.render.tileentity.*;
@@ -162,7 +163,9 @@ public class ClientProxy extends ServerProxy {
 
 		Jars.initJars();
 
-		((IReloadableResourceManager) Minecraft.getMinecraft().getResourceManager()).registerReloadListener(new QMAWLoader());
+		IReloadableResourceManager resourceMan = (IReloadableResourceManager) Minecraft.getMinecraft().getResourceManager();
+		resourceMan.registerReloadListener(new QMAWLoader());
+		resourceMan.registerReloadListener(new HFRModelReloader());
 
 		if(GeneralConfig.enableSoundExtension) {
 			SoundSystemConfig.setNumberNormalChannels(GeneralConfig.normalSoundChannels);

src/main/java/com/hbm/render/loader/HFRModelReloader.java

@@ -0,0 +1,34 @@
+package com.hbm.render.loader;
+
+import java.io.IOException;
+import java.util.Map.Entry;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.resources.IResource;
+import net.minecraft.client.resources.IResourceManager;
+import net.minecraft.client.resources.IResourceManagerReloadListener;
+
+public class HFRModelReloader implements IResourceManagerReloadListener {
+
+	@Override
+	public void onResourceManagerReload(IResourceManager resourceManager) {
+		
+		for(HFRWavefrontObject obj : HFRWavefrontObject.allModels) {
+			try {
+				obj.destroy();
+				IResource  resource = Minecraft.getMinecraft().getResourceManager().getResource(obj.resource);
+				obj.loadObjModel(resource.getInputStream());
+				// MainRegistry.logger.info("Reloading OBJ " + obj.resource.getResourcePath());
+			} catch(IOException e) { }
+		}
+		
+		for(Entry<HFRWavefrontObjectVBO, HFRWavefrontObject> entry : HFRWavefrontObject.allVBOs.entrySet()) {
+			HFRWavefrontObjectVBO vbo = entry.getKey();
+			HFRWavefrontObject obj = entry.getValue();
+			
+			vbo.destroy();
+			vbo.load(obj);
+			// MainRegistry.logger.info("Reloading VBO " + obj.resource.getResourcePath());
+		}
+	}
+}

src/main/java/com/hbm/render/loader/HFRWavefrontObject.java

@@ -5,6 +5,8 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -22,6 +24,11 @@ import net.minecraftforge.client.model.obj.TextureCoordinate;
 import net.minecraftforge.client.model.obj.Vertex;
 
 public class HFRWavefrontObject implements IModelCustomNamed {
+	
+	/** For resource reloading */
+	public static LinkedHashSet<HFRWavefrontObject> allModels = new LinkedHashSet();
+	public static LinkedHashMap<HFRWavefrontObjectVBO, HFRWavefrontObject> allVBOs = new LinkedHashMap();
+	
 	private static Pattern vertexPattern = Pattern.compile("(v( (\\-){0,1}\\d+(\\.\\d+)?){3,4} *\\n)|(v( (\\-){0,1}\\d+(\\.\\d+)?){3,4} *$)");
 	private static Pattern vertexNormalPattern = Pattern.compile("(vn( (\\-){0,1}\\d+(\\.\\d+)?){3,4} *\\n)|(vn( (\\-){0,1}\\d+(\\.\\d+)?){3,4} *$)");
 	private static Pattern textureCoordinatePattern = Pattern.compile("(vt( (\\-){0,1}\\d+\\.\\d+){2,3} *\\n)|(vt( (\\-){0,1}\\d+(\\.\\d+)?){2,3} *$)");
@@ -40,10 +47,12 @@ public class HFRWavefrontObject implements IModelCustomNamed {
 	public ArrayList<TextureCoordinate> textureCoordinates = new ArrayList<TextureCoordinate>();
 	public ArrayList<S_GroupObject> groupObjects = new ArrayList<S_GroupObject>();
 	private S_GroupObject currentGroupObject;
+	public ResourceLocation resource;
 	private String fileName;
 	private boolean smoothing = true;
 
 	public HFRWavefrontObject(ResourceLocation resource) throws ModelFormatException {
+		this.resource = resource;
 		this.fileName = resource.toString();
 
 		try {
@@ -52,6 +61,8 @@ public class HFRWavefrontObject implements IModelCustomNamed {
 		} catch(IOException e) {
 			throw new ModelFormatException("IO Exception reading model format", e);
 		}
+		
+		this.allModels.add(this);
 	}
 
 	public HFRWavefrontObject(ResourceLocation resource, boolean smoothing) throws ModelFormatException {
@@ -59,12 +70,15 @@ public class HFRWavefrontObject implements IModelCustomNamed {
 		this.smoothing = smoothing;
 	}
 
-	public HFRWavefrontObject(String filename, InputStream inputStream) throws ModelFormatException {
-		this.fileName = filename;
-		loadObjModel(inputStream);
+	public void destroy() {
+		vertices.clear();
+		vertexNormals.clear();
+		textureCoordinates.clear();
+		groupObjects.clear();
+		currentGroupObject = null;
 	}
 
-	private void loadObjModel(InputStream inputStream) throws ModelFormatException {
+	public void loadObjModel(InputStream inputStream) throws ModelFormatException {
 		BufferedReader reader = null;
 
 		String currentLine = null;
@@ -492,7 +506,9 @@ public class HFRWavefrontObject implements IModelCustomNamed {
 		return names;
 	}
 
-	public WavefrontObjVBO asVBO() {
-		return new WavefrontObjVBO(this);
+	public HFRWavefrontObjectVBO asVBO() {
+		HFRWavefrontObjectVBO vbo = new HFRWavefrontObjectVBO(this);
+		this.allVBOs.put(vbo, this);
+		return vbo;
 	}
 }

src/main/java/com/hbm/render/loader/HFRWavefrontObjectVBO.java

@@ -10,7 +10,7 @@ import org.lwjgl.opengl.*;
 import net.minecraftforge.client.model.obj.TextureCoordinate;
 import net.minecraftforge.client.model.obj.Vertex;
 
-public class WavefrontObjVBO implements IModelCustomNamed {
+public class HFRWavefrontObjectVBO implements IModelCustomNamed {
 
 	class VBOBufferData {
 
@@ -27,7 +27,11 @@ public class WavefrontObjVBO implements IModelCustomNamed {
 	static int VERTEX_SIZE = 3;
 	static int UV_SIZE = 3;
 	
-	public WavefrontObjVBO(HFRWavefrontObject obj) {
+	public HFRWavefrontObjectVBO(HFRWavefrontObject obj) {
+		load(obj);
+	}
+	
+	public void load(HFRWavefrontObject obj) {
 		for(S_GroupObject g : obj.groupObjects) {
 			VBOBufferData data = new VBOBufferData();
 			data.name = g.name;
@@ -74,6 +78,19 @@ public class WavefrontObjVBO implements IModelCustomNamed {
 			groups.add(data);
 		}
 	}
+	
+	// truth be told, i have no fucking idea what i'm doing
+	// i know the VBO sends data to the GPU to be saved there directly which is where the optimization comes from in the first place
+	// so logically, if we want to get rid of this, we need to blow the data up
+	// documentation on GL15 functions seems nonexistant so fuck it we ball i guess
+	public void destroy() {
+		for(VBOBufferData data : groups) {
+			GL15.glDeleteBuffers(data.vertexHandle);
+			GL15.glDeleteBuffers(data.uvHandle);
+			GL15.glDeleteBuffers(data.normalHandle);
+		}
+		groups.clear();
+	}
 
 	@Override
 	public String getType() {