Save ChunkMeshes to disk (no loading yet)

7 files changed, 99 insertions, 2 deletions

diff --git a/src/main/java/makamys/lodmod/LODMod.java b/src/main/java/makamys/lodmod/LODMod.java
index 485f867..34410d4 100644
--- a/src/main/java/makamys/lodmod/LODMod.java
+++ b/src/main/java/makamys/lodmod/LODMod.java
@@ -70,6 +70,13 @@ public class LODMod
     }
     
     @SubscribeEvent
+    public void onWorldSave(WorldEvent.Save event) {
+        if(isActive()) {
+            renderer.onSave(event.world);
+        }
+    }
+    
+    @SubscribeEvent
     public void onRenderOverlay(RenderGameOverlayEvent event) {
         FontRenderer fontRenderer = RenderManager.instance.getFontRenderer();
         if(isActive() && event.type == ElementType.TEXT && fontRenderer != null && Minecraft.getMinecraft().gameSettings.showDebugInfo)
diff --git a/src/main/java/makamys/lodmod/renderer/ChunkMesh.java b/src/main/java/makamys/lodmod/renderer/ChunkMesh.java
index 2251da8..45510ef 100644
--- a/src/main/java/makamys/lodmod/renderer/ChunkMesh.java
+++ b/src/main/java/makamys/lodmod/renderer/ChunkMesh.java
@@ -1,7 +1,9 @@
 package makamys.lodmod.renderer;
 
 import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.DataInputStream;
+import java.io.DataOutputStream;
 import java.io.EOFException;
 import java.io.FileInputStream;
 import java.io.IOException;
@@ -14,6 +16,7 @@ import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import org.lwjgl.BufferUtils;
 
@@ -24,6 +27,9 @@ import net.minecraft.client.renderer.Tessellator;
 import net.minecraft.client.renderer.WorldRenderer;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.renderer.texture.TextureMap;
+import net.minecraft.nbt.NBTBase;
+import net.minecraft.nbt.NBTTagByteArray;
+import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
 
 public class ChunkMesh extends Mesh {
@@ -33,6 +39,8 @@ public class ChunkMesh extends Mesh {
     int z;
     Flags flags;
     
+    NBTBase nbtData;
+    
     public static int usedRAM = 0;
     public static int instances = 0;
     
@@ -44,6 +52,7 @@ public class ChunkMesh extends Mesh {
         this.quadCount = quadCount;
         
         this.buffer = createBuffer(data, stringTable);
+        this.nbtData = new NBTTagByteArray(data);
         
         usedRAM += buffer.limit();
         instances++;
@@ -56,12 +65,28 @@ public class ChunkMesh extends Mesh {
         this.flags = flags;
         this.quadCount = quadCount;
         
-        this.buffer = createBuffer(quads);
+        this.nbtData = toNBT(quads, quadCount);
+        // TODO move this somewhere else
+        List<String> nameList = (List<String>) ((TextureMap)Minecraft.getMinecraft().getTextureManager().getTexture(TextureMap.locationBlocksTexture)).mapUploadedSprites.keySet().stream().collect(Collectors.toList());
+        this.buffer = createBuffer(((NBTTagByteArray)nbtData).func_150292_c(), nameList);
         
         usedRAM += buffer.limit();
         instances++;
     }
     
+    private NBTBase toNBT(List<MeshQuad> quads, int quadCount) {
+        ByteArrayOutputStream byteOut = new ByteArrayOutputStream(quadCount * 6 * 13);
+        DataOutputStream out = new DataOutputStream(byteOut);
+        try {
+            for(int pass = 0; pass <= 9; pass++){
+                for(MeshQuad quad : quads) {
+                    quad.writeToDisk(out, pass);
+                }
+            }
+        } catch(IOException e) {}
+        return new NBTTagByteArray(byteOut.toByteArray());
+    }
+    
     void destroy() {
         usedRAM -= buffer.limit();
         instances--;
diff --git a/src/main/java/makamys/lodmod/renderer/LODChunk.java b/src/main/java/makamys/lodmod/renderer/LODChunk.java
index e1582b1..96c0261 100644
--- a/src/main/java/makamys/lodmod/renderer/LODChunk.java
+++ b/src/main/java/makamys/lodmod/renderer/LODChunk.java
@@ -4,6 +4,9 @@ import java.util.List;
 
 import makamys.lodmod.LODMod;
 import net.minecraft.entity.Entity;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.nbt.NBTTagEnd;
+import net.minecraft.nbt.NBTTagList;
 import net.minecraft.world.chunk.Chunk;
 
 public class LODChunk {
@@ -67,4 +70,18 @@ public class LODChunk {
 		}
 	}
 	
+	public NBTTagCompound saveToNBT() {
+	    NBTTagCompound nbt = new NBTTagCompound();
+	    nbt.setInteger("x", x);
+	    nbt.setInteger("z", z);
+	    NBTTagCompound chunkMeshesCompound = new NBTTagCompound();
+	    for(int i = 0; i < chunkMeshes.length; i++) {
+	        if(chunkMeshes[i] != null) {
+	            chunkMeshesCompound.setTag(String.valueOf(i), chunkMeshes[i].nbtData);
+	        }
+	    }
+	    nbt.setTag("chunkMeshes", chunkMeshesCompound);
+	    return nbt;
+	}
+	
 }
diff --git a/src/main/java/makamys/lodmod/renderer/LODRegion.java b/src/main/java/makamys/lodmod/renderer/LODRegion.java
index 695202d..f0b3138 100644
--- a/src/main/java/makamys/lodmod/renderer/LODRegion.java
+++ b/src/main/java/makamys/lodmod/renderer/LODRegion.java
@@ -1,6 +1,17 @@
 package makamys.lodmod.renderer;
 
+import java.io.BufferedOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.nio.file.Path;
+
+import net.minecraft.client.Minecraft;
 import net.minecraft.entity.Entity;
+import net.minecraft.nbt.CompressedStreamTools;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.nbt.NBTTagList;
 import net.minecraft.world.chunk.Chunk;
 
 public class LODRegion {
@@ -24,6 +35,32 @@ public class LODRegion {
 		return new LODRegion(regionX, regionZ); // TODO
 	}
 	
+	public void save(Path saveDir) {
+	    try {
+	        Path savePath = saveDir.resolve("lod").resolve(regionX + "," + regionZ + ".lod");
+	        File saveFile = savePath.toFile();
+	        saveFile.getParentFile().mkdirs();
+	        
+            NBTTagCompound nbt = new NBTTagCompound();
+            nbt.setByte("V", (byte)0);
+            
+            NBTTagList list = new NBTTagList();
+            
+            for(int i = 0; i < 32; i++) {
+                for(int j = 0; j < 32; j++) {
+                    if(data[i][j] != null) {
+                        list.appendTag(data[i][j].saveToNBT());
+                    }
+                }
+            }
+            nbt.setTag("chunks", list);
+            CompressedStreamTools.writeCompressed(nbt, new FileOutputStream(saveFile));
+        } catch (Exception e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+	}
+	
 	public LODChunk getChunkAbsolute(int chunkXAbs, int chunkZAbs) {
 		return getChunk(chunkXAbs - regionX * 32, chunkZAbs - regionZ * 32);
 	}
diff --git a/src/main/java/makamys/lodmod/renderer/LODRenderer.java b/src/main/java/makamys/lodmod/renderer/LODRenderer.java
index 4c5c50f..ca661a7 100644
--- a/src/main/java/makamys/lodmod/renderer/LODRenderer.java
+++ b/src/main/java/makamys/lodmod/renderer/LODRenderer.java
@@ -7,11 +7,13 @@ import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.renderer.texture.TextureMap;
 import net.minecraft.entity.Entity;
 import net.minecraft.world.ChunkCoordIntPair;
+import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
 import net.minecraft.world.gen.ChunkProviderServer;
 
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
+import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -576,6 +578,13 @@ public class LODRenderer {
 	    );
 	}
 	
+	public void onSave(World world) {
+	    String worldName = world.getWorldInfo().getWorldName();
+	    Path saveDir = Minecraft.getMinecraft().mcDataDir.toPath().resolve("lodmod").resolve(worldName);
+	    
+	    loadedRegionsMap.forEach((k, v) -> v.save(saveDir));
+	}
+	
 	public static class LODChunkComparator implements Comparator<LODChunk> {
 		Entity player;
 		
diff --git a/src/main/java/makamys/lodmod/renderer/Mesh.java b/src/main/java/makamys/lodmod/renderer/Mesh.java
index 55f2d8b..0f429ec 100644
--- a/src/main/java/makamys/lodmod/renderer/Mesh.java
+++ b/src/main/java/makamys/lodmod/renderer/Mesh.java
@@ -3,6 +3,8 @@ package makamys.lodmod.renderer;
 import java.nio.ByteBuffer;
 import java.nio.IntBuffer;
 
+import net.minecraft.nbt.NBTBase;
+
 public abstract class Mesh {
 	
 	public ByteBuffer buffer;
@@ -13,5 +15,4 @@ public abstract class Mesh {
 	public int offset = -1;
 	
 	public abstract int getStride();
-	
 }
diff --git a/src/main/java/makamys/lodmod/renderer/SimpleChunkMesh.java b/src/main/java/makamys/lodmod/renderer/SimpleChunkMesh.java
index 960c48d..75b4349 100644
--- a/src/main/java/makamys/lodmod/renderer/SimpleChunkMesh.java
+++ b/src/main/java/makamys/lodmod/renderer/SimpleChunkMesh.java
@@ -20,6 +20,7 @@ import net.minecraft.block.material.Material;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.renderer.texture.TextureMap;
+import net.minecraft.nbt.NBTTagString;
 import net.minecraft.util.IIcon;
 import net.minecraft.world.chunk.Chunk;