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Add autogenerate-to-visibilitylimits option to allow automatic priming/generating of chunks within defined visibility area

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Avoid rendering tiles with nothing but empty chunks
Limit size of hash-file cache, and move hash files to world-specific tile directories
This commit is contained in:
Mike Primm 2011-06-25 01:13:40 -05:00
parent 3674ba3786
commit 6dac7f0689
7 changed files with 128 additions and 25 deletions
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27
src/main/java/org/dynmap/TileHashManager.java
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@ -3,6 +3,7 @@ import java.io.File;
import java.io.RandomAccessFile;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;
import java.io.IOException;
import java.util.zip.CRC32;
@ -45,8 +46,15 @@ public class TileHashManager {
}
public File getHashFile(File tiledir) {
if(hf == null)
hf = new File(tiledir, key + (subtype.equals("")?"":("." + subtype)) + "_" + x + "_" + y + ".hash");
if(hf == null) {
String k;
int idx = key.indexOf('.'); /* Find first '.' - world name split */
if(idx > 0)
k = key.substring(0, idx) + File.separatorChar + key.substring(idx+1);
else
k = key;
hf = new File(tiledir, k + (subtype.equals("")?"":("." + subtype)) + "_" + x + "_" + y + ".hash");
}
return hf;
}
/* Write to file */
@ -88,8 +96,21 @@ public class TileHashManager {
crcbuf[off+i] = (byte)((crc >> ((3-i)*8)) & 0xFF);
}
}
public static class LRULinkedHashMap<T, K> extends LinkedHashMap<T, K> {
private int limit;
public LRULinkedHashMap(int lim) {
super(16, (float)0.75, true);
limit = lim;
}
protected boolean removeEldestEntry(Map.Entry<T, K> last) {
return(size() >= limit);
}
}
private static final int MAX_CACHED_TILEHASHFILES = 25;
private Object lock = new Object();
private LinkedHashMap<TileHashFile, byte[]> tilehash = new LinkedHashMap<TileHashFile, byte[]>(16, (float) 0.75, true);
private LRULinkedHashMap<TileHashFile, byte[]> tilehash = new LRULinkedHashMap<TileHashFile, byte[]>(MAX_CACHED_TILEHASHFILES);
private CRC32 crc32 = new CRC32();
public TileHashManager(File tileroot, boolean enabled) {