Removed dungeons from RAM

- Made Schematics load into RAM as byte arrays at the start of game instead of as NBT (saves +- 1GB of RAM) (SH)
- Added checks for non-default schematics to make sure they contain valid NBT at game start (SH)
- Made sure that invalid templates/schematics aren't even added to the array (SH)
- Made sure that PocketTemplate loads Schematic from byte array before it tries to place it (PT)
- Made sure that PocketTemplate unloads Schematic after placinf it (PT)
- Made sure that TileEntityRift doesn't check its Location while PocketTemplate is replacing placeholders in Schematics (otherwise it will try to use null worlds and shizzle) (TER and PT)
- Added functionality when saving a Schematic, this should put the Schematic in memory as a byte array (SH)

- Fixed little bug, where Schematics that would be too big, would only be loaded when configured not to (SH)

- Added functionality to keep the Schematics that are placed most loaded in RAM as NBT (combination of usageList and usageMap) (SH and PT)
- Added config option to set the maximum number of Schematics that will be cached as NBT (MC and SH)

- Made sure that Dimdoors.log is consistently used (SH)

- Added check for .json file extension for files in the json config folder (SH)

- Schematic files in the jar have had the .schem extension for a while now. Generalised a bit. (SH)

Author: Robijnvogel

src/main/java/org/dimdev/dimdoors/shared/ModConfig.java

@@ -80,6 +80,10 @@ public static class Pockets {
         @Name("loadAllSchematics")
         @LangKey("dimdoors.pockets.loadAllSchematics")
         public boolean loadAllSchematics = false;
+        
+        @Name("cachedSchematics")
+        @LangKey("dimdoors.pockets.cachedSchematics") //TODO add lang key to lang file
+        public int cachedSchematics = 10;
     }
 
     public static class World {

src/main/java/org/dimdev/dimdoors/shared/pockets/PocketGenerator.java

@@ -18,7 +18,7 @@ public static Pocket generatePocketFromTemplate(int dim, PocketTemplate pocketTe
 
         PocketRegistry registry = PocketRegistry.instance(dim);
         Pocket pocket = registry.newPocket();
-        pocketTemplate.place(pocket);
+        pocketTemplate.place(pocket, setup);
         pocket.setVirtualLocation(virtualLocation);
         if (setup) pocketTemplate.setup(pocket, null, null);
         return pocket;

src/main/java/org/dimdev/dimdoors/shared/pockets/PocketTemplate.java

@@ -45,8 +45,10 @@ public class PocketTemplate {
     @Getter private final String name;
     @Getter private final String author;
     @Getter @Setter private Schematic schematic;
+    @Setter private byte[] schematicBytecode;
     @Getter private final int size; // number of chunks (16 blocks) on each side - 1
     @Getter private final int baseWeight;
+    @Getter private static boolean isReplacingPlaceholders = false;
 
     public float getWeight(int depth) {
         //noinspection IfStatementWithIdenticalBranches
@@ -59,6 +61,7 @@ public float getWeight(int depth) {
 
     public static void replacePlaceholders(Schematic schematic) { // TODO: rift inheritance rather than placeholders
         // Replace placeholders (some schematics will contain them)
+        isReplacingPlaceholders = true;
         List<NBTTagCompound> tileEntities = new ArrayList<>();
         for (NBTTagCompound tileEntityNBT : schematic.tileEntities) {
             if (tileEntityNBT.hasKey("placeholder")) {
@@ -149,20 +152,34 @@ public static void replacePlaceholders(Schematic schematic) { // TODO: rift inhe
             }
         }
         schematic.entities = entities;
+        isReplacingPlaceholders = false;
     }
 
-    public void place(Pocket pocket) {
+    public void place(Pocket pocket, boolean setup) {
         pocket.setSize(size);
         int gridSize = PocketRegistry.instance(pocket.getDim()).getGridSize();
         int dim = pocket.getDim();
         WorldServer world = WorldUtils.getWorld(dim);
         int xBase = pocket.getX() * gridSize * 16;
         int yBase = 0;
         int zBase = pocket.getZ() * gridSize * 16;
+        
+        //Converting the schematic from bytearray if needed
+        if (schematic == null) {
+            DimDoors.log.debug("Schematic is null, trying to reload from byteArray.");
+            schematic = SchematicHandler.INSTANCE.loadSchematicFromByteArray(schematicBytecode);
+            replacePlaceholders(schematic);
+        }
 
-        // Place the schematic
+        //Place the schematic
         DimDoors.log.info("Placing new pocket using schematic " + id + " at x = " + xBase + ", z = " + zBase);
         schematic.place(world, xBase, yBase, zBase);
+        
+        SchematicHandler.INSTANCE.incrementUsage(this);
+        if (!setup && !SchematicHandler.INSTANCE.isUsedOftenEnough(this)) {
+            //remove schematic from "cache"
+            schematic = null;
+        }
     }
 
     public void setup(Pocket pocket, VirtualTarget linkTo, LinkProperties linkProperties) {
@@ -258,5 +275,10 @@ public void setup(Pocket pocket, VirtualTarget linkTo, LinkProperties linkProper
             rift.register();
             rift.markDirty();
         }
+        
+        if (!SchematicHandler.INSTANCE.isUsedOftenEnough(this)) {
+            //remove schematic from "cache"
+            schematic = null;
+        }
     }
 }