WIP save refactoring

annotations/src/main/java/io/anuke/annotations/Annotations.java

@@ -4,12 +4,27 @@ import java.lang.annotation.*;
 
 public class Annotations{
 
+    /** Indicates that a method should always call its super version. */
+    @Target(ElementType.METHOD)
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface CallSuper{
+
+    }
+
+    /** Annotation that allows overriding CallSuper annotation. To be used on method that overrides method with CallSuper annotation from parent class.*/
+    @Target(ElementType.METHOD)
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface OverrideCallSuper {
+    }
+
+    /** Indicates that a method return or field can be null.*/
     @Target({ElementType.METHOD, ElementType.FIELD})
     @Retention(RetentionPolicy.SOURCE)
     public @interface Nullable{
 
     }
 
+    /** Indicates that a method return or field cannot be null.*/
     @Target({ElementType.METHOD, ElementType.FIELD})
     @Retention(RetentionPolicy.SOURCE)
     public @interface NonNull{

annotations/src/main/java/io/anuke/annotations/CallSuperAnnotationProcessor.java

@@ -0,0 +1,65 @@
+package io.anuke.annotations;
+
+import com.sun.source.util.TreePath;
+import com.sun.source.util.Trees;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.JCTree.JCExpressionStatement;
+import io.anuke.annotations.Annotations.OverrideCallSuper;
+
+import javax.annotation.processing.*;
+import javax.lang.model.SourceVersion;
+import javax.lang.model.element.Element;
+import javax.lang.model.element.TypeElement;
+import javax.tools.Diagnostic.Kind;
+import java.util.List;
+import java.util.Set;
+
+@SupportedAnnotationTypes("java.lang.Override")
+public class CallSuperAnnotationProcessor extends AbstractProcessor{
+    private Trees trees;
+
+    @Override
+    public void init (ProcessingEnvironment pe) {
+        super.init(pe);
+        trees = Trees.instance(pe);
+    }
+
+    public boolean process (Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
+        for (Element e : roundEnv.getElementsAnnotatedWith(Override.class)) {
+            if (e.getAnnotation(OverrideCallSuper.class) != null) return false;
+
+            CodeAnalyzerTreeScanner codeScanner = new CodeAnalyzerTreeScanner();
+            codeScanner.setMethodName(e.getSimpleName().toString());
+
+            TreePath tp = trees.getPath(e.getEnclosingElement());
+            codeScanner.scan(tp, trees);
+
+            if (codeScanner.isCallSuperUsed()) {
+                List list = codeScanner.getMethod().getBody().getStatements();
+
+                if (!doesCallSuper(list, codeScanner.getMethodName())) {
+                    processingEnv.getMessager().printMessage(Kind.ERROR, "Overriding method '" + codeScanner.getMethodName() + "' must explicitly call super method from its parent class.", e);
+                }
+            }
+        }
+
+        return false;
+    }
+
+    private boolean doesCallSuper (List list, String methodName) {
+        for (Object object : list) {
+            if (object instanceof JCTree.JCExpressionStatement) {
+                JCTree.JCExpressionStatement expr = (JCExpressionStatement) object;
+                String exprString = expr.toString();
+                if (exprString.startsWith("super." + methodName) && exprString.endsWith(");")) return true;
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public SourceVersion getSupportedSourceVersion () {
+        return SourceVersion.RELEASE_8;
+    }
+}

annotations/src/main/java/io/anuke/annotations/CodeAnalyzerTreeScanner.java

@@ -0,0 +1,98 @@
+package io.anuke.annotations;
+
+import com.sun.source.tree.*;
+import com.sun.source.util.TreePathScanner;
+import com.sun.source.util.Trees;
+import com.sun.tools.javac.code.Scope;
+import com.sun.tools.javac.code.Symbol;
+import com.sun.tools.javac.code.Symbol.MethodSymbol;
+import com.sun.tools.javac.code.Type.ClassType;
+import com.sun.tools.javac.tree.JCTree.JCIdent;
+import com.sun.tools.javac.tree.JCTree.JCTypeApply;
+import io.anuke.annotations.Annotations.CallSuper;
+
+import java.lang.annotation.Annotation;
+
+class CodeAnalyzerTreeScanner extends TreePathScanner<Object, Trees> {
+	private String methodName;
+	private MethodTree method;
+	private boolean callSuperUsed;
+
+	@Override
+	public Object visitClass (ClassTree classTree, Trees trees) {
+		Tree extendTree = classTree.getExtendsClause();
+
+		if (extendTree instanceof JCTypeApply) { //generic classes case
+			JCTypeApply generic = (JCTypeApply) extendTree;
+			extendTree = generic.clazz;
+		}
+
+		if (extendTree instanceof JCIdent) {
+			JCIdent tree = (JCIdent) extendTree;
+			Scope members = tree.sym.members();
+
+			if (checkScope(members))
+				return super.visitClass(classTree, trees);
+
+			if (checkSuperTypes((ClassType) tree.type))
+				return super.visitClass(classTree, trees);
+
+		}
+		callSuperUsed = false;
+
+		return super.visitClass(classTree, trees);
+	}
+
+	public boolean checkSuperTypes (ClassType type) {
+		if (type.supertype_field != null && type.supertype_field.tsym != null) {
+			if (checkScope(type.supertype_field.tsym.members()))
+				return true;
+			else
+				return checkSuperTypes((ClassType) type.supertype_field);
+		}
+
+		return false;
+	}
+
+	public boolean checkScope (Scope members) {
+		for (Symbol s : members.getElements()) {
+			if (s instanceof MethodSymbol) {
+				MethodSymbol ms = (MethodSymbol) s;
+
+				if (ms.getSimpleName().toString().equals(methodName)) {
+					Annotation annotation = ms.getAnnotation(CallSuper.class);
+					if (annotation != null) {
+						callSuperUsed = true;
+						return true;
+					}
+				}
+			}
+		}
+
+		return false;
+	}
+
+	@Override
+	public Object visitMethod (MethodTree methodTree, Trees trees) {
+		if (methodTree.getName().toString().equals(methodName))
+			method = methodTree;
+
+		return super.visitMethod(methodTree, trees);
+	}
+
+	public void setMethodName (String methodName) {
+		this.methodName = methodName;
+	}
+
+	public String getMethodName () {
+		return methodName;
+	}
+
+	public MethodTree getMethod () {
+		return method;
+	}
+
+	public boolean isCallSuperUsed () {
+		return callSuperUsed;
+	}
+}

annotations/src/main/resources/META-INF/services/javax.annotation.processing.Processor

@@ -1,3 +1,4 @@
 io.anuke.annotations.RemoteMethodAnnotationProcessor
 io.anuke.annotations.SerializeAnnotationProcessor
 io.anuke.annotations.StructAnnotationProcessor
+io.anuke.annotations.CallSuperAnnotationProcessor

build.gradle

@@ -177,6 +177,31 @@ project(":core"){
     }
 
     dependencies{
+        if(System.properties["user.name"] == "anuke"){
+            task cleanGen{
+                doFirst{
+                    delete{
+                        delete "../core/src/io/anuke/mindustry/gen/"
+                    }
+                }
+            }
+
+            task copyGen{
+                doLast{
+                    copy{
+                        from("../core/build/generated/sources/annotationProcessor/java/main/io/anuke/mindustry/gen"){
+                            include "**/*.java"
+                        }
+
+                        into "../core/src/io/anuke/mindustry/gen"
+                    }
+                }
+            }
+
+            compileJava.dependsOn(cleanGen)
+            compileJava.finalizedBy(copyGen)
+        }
+
         compile arcModule("arc-core")
         compile arcModule("extensions:freetype")
         compile arcModule("extensions:arcnet")
@@ -227,6 +252,7 @@ project(":annotations"){
 
     dependencies{
         compile 'com.squareup:javapoet:1.11.0'
+        compile files("${System.getProperty('java.home')}/../lib/tools.jar")
     }
 }
 

core/src/io/anuke/mindustry/core/NetClient.java

@@ -7,7 +7,7 @@ import io.anuke.arc.collection.IntSet;
 import io.anuke.arc.graphics.Color;
 import io.anuke.arc.math.RandomXS128;
 import io.anuke.arc.util.*;
-import io.anuke.arc.util.io.ReusableByteArrayInputStream;
+import io.anuke.arc.util.io.ReusableByteInStream;
 import io.anuke.arc.util.serialization.Base64Coder;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.core.GameState.State;
@@ -50,7 +50,7 @@ public class NetClient implements ApplicationListener{
     /** List of entities that were removed, and need not be added while syncing. */
     private IntSet removed = new IntSet();
     /** Byte stream for reading in snapshots. */
-    private ReusableByteArrayInputStream byteStream = new ReusableByteArrayInputStream();
+    private ReusableByteInStream byteStream = new ReusableByteInStream();
     private DataInputStream dataStream = new DataInputStream(byteStream);
 
     public NetClient(){

core/src/io/anuke/mindustry/core/NetServer.java

@@ -13,7 +13,7 @@ import io.anuke.arc.math.geom.Rectangle;
 import io.anuke.arc.math.geom.Vector2;
 import io.anuke.arc.util.*;
 import io.anuke.arc.util.io.ByteBufferOutput;
-import io.anuke.arc.util.io.CountableByteArrayOutputStream;
+import io.anuke.arc.util.io.ReusableByteOutStream;
 import io.anuke.mindustry.content.Blocks;
 import io.anuke.mindustry.core.GameState.State;
 import io.anuke.mindustry.entities.Entities;
@@ -56,7 +56,7 @@ public class NetServer implements ApplicationListener{
     private ByteBufferOutput outputBuffer = new ByteBufferOutput(writeBuffer);
 
     /** Stream for writing player sync data to. */
-    private CountableByteArrayOutputStream syncStream = new CountableByteArrayOutputStream();
+    private ReusableByteOutStream syncStream = new ReusableByteOutStream();
     /** Data stream for writing player sync data to. */
     private DataOutputStream dataStream = new DataOutputStream(syncStream);
 

core/src/io/anuke/mindustry/entities/type/TileEntity.java

@@ -1,7 +1,6 @@
 package io.anuke.mindustry.entities.type;
 
-import io.anuke.annotations.Annotations.Loc;
+import io.anuke.annotations.Annotations.*;
-import io.anuke.annotations.Annotations.Remote;
 import io.anuke.arc.Events;
 import io.anuke.arc.collection.Array;
 import io.anuke.arc.collection.ObjectSet;
@@ -115,18 +114,14 @@ public class TileEntity extends BaseEntity implements TargetTrait, HealthTrait{
         return dead || tile.entity != this;
     }
 
+    @CallSuper
     public void write(DataOutput stream) throws IOException{
     }
 
-    public void writeConfig(DataOutput stream) throws IOException{
+    @CallSuper
-    }
-
     public void read(DataInput stream) throws IOException{
     }
 
-    public void readConfig(DataInput stream) throws IOException{
-    }
-
     public boolean collide(Bullet other){
         return true;
     }

core/src/io/anuke/mindustry/io/MapIO.java

@@ -171,7 +171,9 @@ public class MapIO{
                 }else if(tile.entity != null){
                     stream.writeByte(Pack.byteByte(tile.getTeamID(), tile.getRotation())); //team + rotation
                     stream.writeShort(/*(short)tile.entity.health*/tile.block().health); //health
-                    tile.entity.writeConfig(stream);
+                    if(tile.block() == Blocks.liquidSource || tile.block() == Blocks.unloader || tile.block() == Blocks.sorter){
+                        stream.writeByte(-1); //write an meaningless byte here, just a fallback thing
+                    }
                 }else{
                     //write consecutive non-entity blocks
                     int consecutives = 0;
@@ -305,7 +307,9 @@ public class MapIO{
                             tile.entity.health = /*health*/tile.block().health;
                             tile.setRotation(rotation);
 
-                            tile.entity.readConfig(stream);
+                            if(tile.block() == Blocks.liquidSource || tile.block() == Blocks.unloader || tile.block() == Blocks.sorter){
+                                stream.readByte(); //these blocks have an extra config byte, read it
+                            }
                         }else{ //no entity/part, read consecutives
                             int consecutives = stream.readUnsignedByte();
 

core/src/io/anuke/mindustry/io/SaveFileVersion.java

@@ -1,8 +1,9 @@
 package io.anuke.mindustry.io;
 
-import io.anuke.arc.collection.Array;
+import io.anuke.arc.collection.*;
-import io.anuke.arc.collection.ObjectMap;
+import io.anuke.arc.collection.ObjectMap.Entry;
 import io.anuke.arc.util.Pack;
+import io.anuke.arc.util.io.ReusableByteOutStream;
 import io.anuke.mindustry.content.Blocks;
 import io.anuke.mindustry.entities.Entities;
 import io.anuke.mindustry.entities.EntityGroup;
@@ -18,8 +19,21 @@ import java.io.*;
 import static io.anuke.mindustry.Vars.content;
 import static io.anuke.mindustry.Vars.world;
 
+/**
+ * Format:
+ *
+ * Everything is compressed. Use a DeflaterStream to begin reading.
+ *
+ * 1. version of format / int
+ * 2. meta tags
+ *  - length / short
+ *  - continues with (string, string) pairs indicating key, value
+ */
 public abstract class SaveFileVersion{
     public final int version;
+
+    private final ReusableByteOutStream byteOutput = new ReusableByteOutStream();
+    private final DataOutputStream dataBytes = new DataOutputStream(byteOutput);
     private final ObjectMap<String, String> fallback = ObjectMap.of(
         "alpha-dart-mech-pad", "dart-mech-pad"
     );
@@ -28,6 +42,42 @@ public abstract class SaveFileVersion{
         this.version = version;
     }
 
+    /** Write a chunk of input to the stream. An integer of some length is written first, followed by the data. */
+    public void writeChunk(DataOutput output, boolean isByte, IORunner<DataOutput> runner) throws IOException{
+        //reset output position
+        byteOutput.position(0);
+        //writer the needed info
+        runner.accept(dataBytes);
+        int length = byteOutput.position();
+        //write length (either int or byte) followed by the output bytes
+        if(!isByte){
+            output.writeInt(length);
+        }else{
+            if(length > 255){
+                throw new IOException("Byte write length exceeded: " + length + " > 255");
+            }
+            output.writeByte(length);
+        }
+        output.write(byteOutput.getBytes(), 0, length);
+    }
+
+    /** Reads a chunk of some length. Use the runner for reading to catch more descriptive errors. */
+    public int readChunk(DataInput input, boolean isByte, IORunner<DataInput> runner) throws IOException{
+        int length = isByte ? input.readUnsignedByte() : input.readInt();
+        //TODO descriptive error with chunk name
+        runner.accept(input);
+        return length;
+    }
+
+    /** Skip a chunk completely. */
+    public void skipChunk(DataInput input, boolean isByte) throws IOException{
+        int length = readChunk(input, isByte, t -> {});
+        int skipped = input.skipBytes(length);
+        if(length != skipped){
+            throw new IOException("Could not skip bytes. Expected length: " + length + "; Actual length: " + skipped);
+        }
+    }
+
     public SaveMeta getData(DataInputStream stream) throws IOException{
         long time = stream.readLong();
         long playtime = stream.readLong();
@@ -39,6 +89,23 @@ public abstract class SaveFileVersion{
         return new SaveMeta(version, time, playtime, build, map, wave, rules);
     }
 
+    public void writeMeta(DataOutputStream stream, ObjectMap<String, String> map) throws IOException{
+        stream.writeShort(map.size);
+        for(Entry<String, String> entry : map.entries()){
+            stream.writeUTF(entry.key);
+            stream.writeUTF(entry.value);
+        }
+    }
+
+    public StringMap readMeta(DataInputStream stream) throws IOException{
+        StringMap map = new StringMap();
+        short size = stream.readShort();
+        for(int i = 0; i < size; i++){
+            map.put(stream.readUTF(), stream.readUTF());
+        }
+        return map;
+    }
+
     public void writeMap(DataOutputStream stream) throws IOException{
         //write world size
         stream.writeShort(world.width());
@@ -81,7 +148,6 @@ public abstract class SaveFileVersion{
                 if(tile.entity.liquids != null) tile.entity.liquids.write(stream);
                 if(tile.entity.cons != null) tile.entity.cons.write(stream);
 
-                tile.entity.writeConfig(stream);
                 tile.entity.write(stream);
             }else{
                 //write consecutive non-entity blocks
@@ -157,7 +223,6 @@ public abstract class SaveFileVersion{
                 if(tile.entity.liquids != null) tile.entity.liquids.read(stream);
                 if(tile.entity.cons != null) tile.entity.cons.read(stream);
 
-                tile.entity.readConfig(stream);
                 tile.entity.read(stream);
             }else{
                 int consecutives = stream.readUnsignedByte();
@@ -255,4 +320,8 @@ public abstract class SaveFileVersion{
     public abstract void read(DataInputStream stream) throws IOException;
 
     public abstract void write(DataOutputStream stream) throws IOException;
+
+    public interface IORunner<T>{
+        void accept(T stream) throws IOException;
+    }
 }

core/src/io/anuke/mindustry/io/SaveIO.java

@@ -11,9 +11,7 @@ import java.util.zip.InflaterInputStream;
 
 import static io.anuke.mindustry.Vars.*;
 
-//TODO load backup meta if possible
 public class SaveIO{
-    public static final IntArray breakingVersions = IntArray.with(47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 63);
     public static final IntMap<SaveFileVersion> versions = new IntMap<>();
     public static final Array<SaveFileVersion> versionArray = Array.with(new Save1());
 
@@ -30,11 +28,11 @@ public class SaveIO{
     public static void saveToSlot(int slot){
         FileHandle file = fileFor(slot);
         boolean exists = file.exists();
-        if(exists) file.moveTo(file.sibling(file.name() + "-backup." + file.extension()));
+        if(exists) file.moveTo(backupFileFor(file));
         try{
             write(fileFor(slot));
         }catch(Exception e){
-            if(exists) file.sibling(file.name() + "-backup." + file.extension()).moveTo(file);
+            if(exists) backupFileFor(file).moveTo(file);
             throw new RuntimeException(e);
         }
     }
@@ -47,12 +45,12 @@ public class SaveIO{
         return new DataInputStream(new InflaterInputStream(fileFor(slot).read(bufferSize)));
     }
 
-    public static boolean isSaveValid(int slot){
+    public static DataInputStream getBackupSlotStream(int slot){
-        try{
+        return new DataInputStream(new InflaterInputStream(backupFileFor(fileFor(slot)).read(bufferSize)));
-            return isSaveValid(getSlotStream(slot));
-        }catch(Exception e){
-            return false;
     }
+
+    public static boolean isSaveValid(int slot){
+        return isSaveValid(getSlotStream(slot)) || isSaveValid(getBackupSlotStream(slot));
     }
 
     public static boolean isSaveValid(FileHandle file){
@@ -60,7 +58,6 @@ public class SaveIO{
     }
 
     public static boolean isSaveValid(DataInputStream stream){
-
         try{
             getData(stream);
             return true;
@@ -90,6 +87,10 @@ public class SaveIO{
         return saveDirectory.child(slot + "." + Vars.saveExtension);
     }
 
+    public static FileHandle backupFileFor(FileHandle file){
+        return file.sibling(file.name() + "-backup." + file.extension());
+    }
+
     public static void write(FileHandle file){
         write(new DeflaterOutputStream(file.write(false, bufferSize)){
             byte[] tmp = {0};

core/src/io/anuke/mindustry/ui/dialogs/LoadDialog.java

@@ -185,13 +185,8 @@ public class LoadDialog extends FloatingDialog{
         button.clicked(() -> {
             if(!button.childrenPressed()){
                 int build = slot.getBuild();
-                if(SaveIO.breakingVersions.contains(build)){
-                    ui.showInfo("$save.old");
-                    slot.delete();
-                }else{
                 runLoadSave(slot);
             }
-            }
         });
     }
 }

core/src/io/anuke/mindustry/world/ItemBuffer.java

@@ -1,8 +1,11 @@
 package io.anuke.mindustry.world;
 
-import io.anuke.arc.util.*;
+import io.anuke.arc.util.Pack;
+import io.anuke.arc.util.Time;
 import io.anuke.mindustry.type.Item;
 
+import java.io.*;
+
 import static io.anuke.mindustry.Vars.content;
 
 public class ItemBuffer{
@@ -57,4 +60,23 @@ public class ItemBuffer{
         System.arraycopy(buffer, 1, buffer, 0, index - 1);
         index--;
     }
+
+    public void write(DataOutput stream) throws IOException{
+        stream.writeByte((byte)index);
+        stream.writeByte((byte)buffer.length);
+        for(long l : buffer){
+            stream.writeLong(l);
+        }
+    }
+
+    public void read(DataInput stream) throws IOException{
+        index = stream.readByte();
+        byte length = stream.readByte();
+        for(int i = 0; i < length; i++){
+            long l = stream.readLong();
+            if(i < buffer.length){
+                buffer[i] = l;
+            }
+        }
+    }
 }

core/src/io/anuke/mindustry/world/Tile.java

@@ -24,9 +24,11 @@ public class Tile implements Position, TargetTrait{
     public short x, y;
     protected Block block;
     protected Floor floor;
-    /** Rotation, 0-3. Also used to store offload location, in which case it can be any number. */
+    /** Rotation, 0-3. Also used to store offload location and link, in which case it can be any number.
+     * When saved in non-link form, this data is truncated to 4 bits = max 16.*/
     private byte rotation;
-    /** Team ordinal. */
+    /** Team ordinal. Keep in mind that this is written as 4 bits, which means that there are only 2^4 = 16 possible teams.
+     * Complications may arise from using signed bytes as well. Be careful.*/
     private byte team;
     /** Ore that is on top of this (floor) block. */
     private byte overlay = 0;

core/src/io/anuke/mindustry/world/blocks/distribution/BufferedItemBridge.java

@@ -6,6 +6,8 @@ import io.anuke.mindustry.type.Item;
 import io.anuke.mindustry.world.ItemBuffer;
 import io.anuke.mindustry.world.Tile;
 
+import java.io.*;
+
 public class BufferedItemBridge extends ExtendingItemBridge{
     protected int timerAccept = timers++;
 
@@ -43,5 +45,17 @@ public class BufferedItemBridge extends ExtendingItemBridge{
 
     class BufferedItemBridgeEntity extends ItemBridgeEntity{
         ItemBuffer buffer = new ItemBuffer(bufferCapacity, speed);
+
+        @Override
+        public void write(DataOutput stream) throws IOException{
+            super.write(stream);
+            buffer.write(stream);
+        }
+
+        @Override
+        public void read(DataInput stream) throws IOException{
+            super.read(stream);
+            buffer.read(stream);
+        }
     }
 }

core/src/io/anuke/mindustry/world/blocks/distribution/Junction.java

@@ -7,6 +7,8 @@ import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.meta.BlockGroup;
 
+import java.io.*;
+
 import static io.anuke.mindustry.Vars.content;
 
 public class Junction extends Block{
@@ -82,6 +84,20 @@ public class Junction extends Block{
 
     class JunctionEntity extends TileEntity{
         Buffer[] buffers = {new Buffer(), new Buffer(), new Buffer(), new Buffer()};
+
+        @Override
+        public void write(DataOutput stream) throws IOException{
+            for(Buffer b : buffers){
+                b.write(stream);
+            }
+        }
+
+        @Override
+        public void read(DataInput stream) throws IOException{
+            for(Buffer b : buffers){
+                b.read(stream);
+            }
+        }
     }
 
     class Buffer{
@@ -96,5 +112,24 @@ public class Junction extends Block{
         boolean full(){
             return index >= items.length - 1;
         }
+
+        void write(DataOutput stream) throws IOException{
+            stream.writeByte((byte)index);
+            stream.writeByte((byte)items.length);
+            for(long l : items){
+                stream.writeLong(l);
+            }
+        }
+
+        void read(DataInput stream) throws IOException{
+            index = stream.readByte();
+            byte length = stream.readByte();
+            for(int i = 0; i < length; i++){
+                long l = stream.readLong();
+                if(i < items.length){
+                    items[i] = l;
+                }
+            }
+        }
     }
 }

core/src/io/anuke/mindustry/world/blocks/distribution/Sorter.java

@@ -132,12 +132,12 @@ public class Sorter extends Block{
         public Item sortItem;
 
         @Override
-        public void writeConfig(DataOutput stream) throws IOException{
+        public void write(DataOutput stream) throws IOException{
             stream.writeByte(sortItem == null ? -1 : sortItem.id);
         }
 
         @Override
-        public void readConfig(DataInput stream) throws IOException{
+        public void read(DataInput stream) throws IOException{
             byte b = stream.readByte();
             sortItem = b == -1 ? null : content.items().get(b);
         }

core/src/io/anuke/mindustry/world/blocks/sandbox/LiquidSource.java

@@ -116,12 +116,12 @@ public class LiquidSource extends Block{
         public Liquid source = null;
 
         @Override
-        public void writeConfig(DataOutput stream) throws IOException{
+        public void write(DataOutput stream) throws IOException{
             stream.writeByte(source == null ? -1 : source.id);
         }
 
         @Override
-        public void readConfig(DataInput stream) throws IOException{
+        public void read(DataInput stream) throws IOException{
             byte id = stream.readByte();
             source = id == -1 ? null : content.liquid(id);
         }

core/src/io/anuke/mindustry/world/blocks/storage/Unloader.java

@@ -104,12 +104,12 @@ public class Unloader extends Block{
         public Item sortItem = null;
 
         @Override
-        public void writeConfig(DataOutput stream) throws IOException{
+        public void write(DataOutput stream) throws IOException{
             stream.writeByte(sortItem == null ? -1 : sortItem.id);
         }
 
         @Override
-        public void readConfig(DataInput stream) throws IOException{
+        public void read(DataInput stream) throws IOException{
             byte id = stream.readByte();
             sortItem = id == -1 ? null : content.items().get(id);
         }

core/src/io/anuke/mindustry/world/blocks/units/UnitFactory.java

@@ -197,14 +197,15 @@ public class UnitFactory extends Block{
 
         @Override
         public void write(DataOutput stream) throws IOException{
+            super.write(stream);
             stream.writeFloat(buildTime);
             stream.writeInt(spawned);
         }
 
         @Override
         public void read(DataInput stream) throws IOException{
+            super.read(stream);
             buildTime = stream.readFloat();
-            stream.readFloat(); //unneeded information, will remove later
             spawned = stream.readInt();
         }
     }