diff --git a/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java b/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java
index 6ab0dcf1a8..0978f2b554 100644
--- a/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java
+++ b/annotations/src/main/java/mindustry/annotations/impl/EntityProcess.java
@@ -48,7 +48,14 @@ public class EntityProcess extends BaseProcessor{
                     //getter
                     inter.addMethod(MethodSpec.methodBuilder("get" + cname).addModifiers(Modifier.ABSTRACT, Modifier.PUBLIC).returns(field.tname()).build());
                     //setter
-                    inter.addMethod(MethodSpec.methodBuilder("set" + cname).addModifiers(Modifier.ABSTRACT, Modifier.PUBLIC).addParameter(field.tname(), field.name()).build());
+                    if(!field.is(Modifier.FINAL)) inter.addMethod(MethodSpec.methodBuilder("set" + cname).addModifiers(Modifier.ABSTRACT, Modifier.PUBLIC).addParameter(field.tname(), field.name()).build());
+                }
+
+                //add utility methods to interface
+                for(Smethod method : component.methods()){
+                    inter.addMethod(MethodSpec.methodBuilder(method.name()).returns(method.ret().toString().equals("void") ? TypeName.VOID : method.retn())
+                    .addParameters(method.params().map(v -> ParameterSpec.builder(v.tname(), v.name())
+                    .build())).addModifiers(Modifier.PUBLIC, Modifier.ABSTRACT).build());
                 }
 
                 write(inter);
diff --git a/annotations/src/main/java/mindustry/annotations/util/Smethod.java b/annotations/src/main/java/mindustry/annotations/util/Smethod.java
index b21a25a040..1db941c63a 100644
--- a/annotations/src/main/java/mindustry/annotations/util/Smethod.java
+++ b/annotations/src/main/java/mindustry/annotations/util/Smethod.java
@@ -1,6 +1,7 @@
 package mindustry.annotations.util;
 
 import arc.struct.*;
+import com.squareup.javapoet.*;
 import com.sun.source.tree.*;
 import mindustry.annotations.*;
 
@@ -21,6 +22,10 @@ public class Smethod extends Selement<ExecutableElement>{
         return e.getReturnType();
     }
 
+    public TypeName retn(){
+        return TypeName.get(ret());
+    }
+
     public MethodTree tree(){
         return BaseProcessor.trees.getTree(e);
     }
diff --git a/annotations/src/main/java/mindustry/annotations/util/Stype.java b/annotations/src/main/java/mindustry/annotations/util/Stype.java
index 5fe641afd3..9f49d0b3b7 100644
--- a/annotations/src/main/java/mindustry/annotations/util/Stype.java
+++ b/annotations/src/main/java/mindustry/annotations/util/Stype.java
@@ -1,6 +1,7 @@
 package mindustry.annotations.util;
 
 import arc.struct.*;
+import mindustry.annotations.*;
 
 import javax.lang.model.element.*;
 import javax.lang.model.type.*;
@@ -12,6 +13,20 @@ public class Stype extends Selement<TypeElement>{
         super(typeElement);
     }
 
+    public Array<Stype> superclasses(){
+        Array<Stype> out = new Array<>();
+        Stype sup = superclass();
+        while(!sup.superclass().name().equals("java.lang.Object")){
+            out.add(sup);
+            sup = superclass();
+        }
+        return out;
+    }
+
+    public Stype superclass(){
+        return new Stype((TypeElement)BaseProcessor.typeu.asElement(BaseProcessor.typeu.directSupertypes(mirror()).get(0)));
+    }
+
     public <A extends Annotation> A annotation(Class<A> annotation){
         return e.getAnnotation(annotation);
     }
diff --git a/core/src/mindustry/entities/def/EntityDefs.java b/core/src/mindustry/entities/def/EntityDefs.java
index 55c4d3cd3b..b44a906e80 100644
--- a/core/src/mindustry/entities/def/EntityDefs.java
+++ b/core/src/mindustry/entities/def/EntityDefs.java
@@ -3,6 +3,7 @@ package mindustry.entities.def;
 import arc.math.geom.*;
 import mindustry.annotations.Annotations.*;
 import mindustry.entities.units.*;
+import mindustry.gen.*;
 import mindustry.net.*;
 
 public class EntityDefs{
@@ -24,7 +25,7 @@ public class EntityDefs{
     }
 
     class Vel extends Pos{
-        Vec2 vel = new Vec2();
+        final Vec2 vel = new Vec2();
 
         void update(){
             x += vel.x;
@@ -34,7 +35,7 @@ public class EntityDefs{
     }
 
     class Status{
-        Statuses statuses = new Statuses();
+        final Statuses statuses = new Statuses();
 
         void update(){
             statuses.update(null);
@@ -45,4 +46,15 @@ public class EntityDefs{
         NetConnection connection;
     }
 
+    static <T extends Connectionc & Velc & Healthc & Posc> void doSomethingWithAConnection(T value){
+        value.setX(0);
+        value.setY(0);
+        value.getVel().set(100, 100f);
+        value.setDead(true);
+        value.getConnection().kick("you are dead");
+    }
+
+    static void test(){
+        doSomethingWithAConnection(new PlayerGen());
+    }
 }