Unload regions when they are empty, not when they are "far" away

3 files changed, 28 insertions, 2 deletions

diff --git a/src/main/java/makamys/neodymium/renderer/NeoChunk.java b/src/main/java/makamys/neodymium/renderer/NeoChunk.java
index 4dd692e..2adc7ef 100644
--- a/src/main/java/makamys/neodymium/renderer/NeoChunk.java
+++ b/src/main/java/makamys/neodymium/renderer/NeoChunk.java
@@ -185,4 +185,18 @@ public class NeoChunk {
 	    return true;
 	}
 	
+    public boolean isEmpty() {
+        for(SimpleChunkMesh scm: simpleMeshes) {
+            if(scm != null) {
+                return false;
+            }
+        }
+        for(CullableMeshCollection cm: chunkMeshes) {
+            if(cm != null) {
+                return false;
+            }
+        }
+        return true;
+    }
+	
 }
diff --git a/src/main/java/makamys/neodymium/renderer/NeoRegion.java b/src/main/java/makamys/neodymium/renderer/NeoRegion.java
index 841bf55..78bf9e7 100644
--- a/src/main/java/makamys/neodymium/renderer/NeoRegion.java
+++ b/src/main/java/makamys/neodymium/renderer/NeoRegion.java
@@ -174,5 +174,17 @@ public class NeoRegion {
 	public String toString() {
 	    return "LODRegion(" + regionX + ", " + regionZ + ")";
 	}
+    
+	public boolean isEmpty() {
+	    for(int i = 0; i < 32; i++) {
+            for(int j = 0; j < 32; j++) {
+                NeoChunk chunk = data[i][j];
+                if(chunk != null && !chunk.isEmpty()) {
+                    return false;
+                }
+            }
+	    }
+	    return true;
+    }
 	
 }
diff --git a/src/main/java/makamys/neodymium/renderer/NeoRenderer.java b/src/main/java/makamys/neodymium/renderer/NeoRenderer.java
index d55119f..92efffc 100644
--- a/src/main/java/makamys/neodymium/renderer/NeoRenderer.java
+++ b/src/main/java/makamys/neodymium/renderer/NeoRenderer.java
@@ -103,7 +103,7 @@ public class NeoRenderer {
     private int renderedMeshes, renderedQuads;
     private int frameCount;
     
-    public int renderRange = 48;
+    public int renderRange = 48; // unused LOD thing..
     
     private boolean freezeMeshes;
     
@@ -266,7 +266,7 @@ public class NeoRenderer {
                     ChunkCoordIntPair k = it.next();
                     NeoRegion v = loadedRegionsMap.get(k);
                     
-                    if(v.distanceTaxicab(player) > renderRange * 16 + 16 * 16) {
+                    if(v.isEmpty()) {
                         System.out.println("unloading " + v);
                         v.destroy(getSaveDir());
                         it.remove();