Don't use MeshQuads when mesh optimization is disabled

Fixes some rendering issues (like cacti on chunk corners, and missing bottom
faces) and improves performance, when optimization is not enabled.

2 files changed, 50 insertions, 2 deletions

diff --git a/src/main/java/makamys/lodmod/util/BufferWriter.java b/src/main/java/makamys/lodmod/util/BufferWriter.java
new file mode 100644
index 0000000..ae81be1
--- /dev/null
+++ b/src/main/java/makamys/lodmod/util/BufferWriter.java
@@ -0,0 +1,46 @@
+package makamys.lodmod.util;
+
+import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.ShortBuffer;
+
+public class BufferWriter {
+    
+    private ByteBuffer buf;
+    
+    private FloatBuffer floatBuffer;
+    private ShortBuffer shortBuffer;
+    private IntBuffer intBuffer;
+    
+    public BufferWriter(ByteBuffer buf) {
+        this.buf = buf;
+        this.floatBuffer = buf.asFloatBuffer();
+        this.shortBuffer = buf.asShortBuffer();
+        this.intBuffer = buf.asIntBuffer();
+    }
+    
+    private void incrementPosition(int add) {
+        buf.position(buf.position() + add);
+        floatBuffer.position(buf.position() / 4);
+        shortBuffer.position(buf.position() / 2);
+        intBuffer.position(buf.position() / 4);
+    }
+    
+    public void writeFloat(float x) {
+        try {
+        floatBuffer.put(x);
+        
+        incrementPosition(4);
+        } catch(Exception e){
+            e.printStackTrace();
+        }
+    }
+    
+    public void writeInt(int x) {
+        intBuffer.put(x);
+        
+        incrementPosition(4);
+    }
+    
+}
\ No newline at end of file
diff --git a/src/main/java/makamys/lodmod/util/Util.java b/src/main/java/makamys/lodmod/util/Util.java
index ae80b78..851e6f5 100644
--- a/src/main/java/makamys/lodmod/util/Util.java
+++ b/src/main/java/makamys/lodmod/util/Util.java
@@ -53,9 +53,11 @@ public class Util {
     }
     
     public static byte[] byteBufferToArray(ByteBuffer buffer) {
-        byte[] dst = new byte[buffer.remaining()];
+        byte[] dst = new byte[buffer.limit()];
+        int pos = buffer.position();
+        buffer.position(0);
         buffer.get(dst);
-        buffer.flip();
+        buffer.position(pos);
         return dst;
     }