diff --git a/OGP1718-Worms/src/worms/model/GameObject.java b/OGP1718-Worms/src/worms/model/GameObject.java
index 0c8707f..f641e3d 100644
--- a/OGP1718-Worms/src/worms/model/GameObject.java
+++ b/OGP1718-Worms/src/worms/model/GameObject.java
@@ -251,4 +251,14 @@ public abstract class GameObject {
 
         return Math.sqrt(Math.pow((otherLocation.getX() - location.getX()), 2) + Math.pow((otherLocation.getY() - location.getY()), 2));
     }
+
+    public double getAngle(GameObject o) {
+
+        double x1 = getLocation().getX();
+        double y1 = getLocation().getY();
+        double x2 = o.getLocation().getX();
+        double y2 = o.getLocation().getY();
+
+        return Math.atan(Math.abs(x1 - x2) / Math.abs(y1 - y2));
+    }
 }
\ No newline at end of file
diff --git a/OGP1718-Worms/src/worms/programs/ArgumentBinaryExpression.java b/OGP1718-Worms/src/worms/programs/ArgumentBinaryExpression.java
new file mode 100644
index 0000000..198dad5
--- /dev/null
+++ b/OGP1718-Worms/src/worms/programs/ArgumentBinaryExpression.java
@@ -0,0 +1,26 @@
+package worms.programs;
+
+import java.util.function.BiFunction;
+
+public class ArgumentBinaryExpression<T, O, R> extends ArgumentExpression<R, O> {
+
+    private final Expression expression;
+    private final BiFunction<T, O, R> function;
+
+    ArgumentBinaryExpression(Expression expression, BiFunction<T, O, R> function, Type type) {
+        super(type);
+        this.expression = expression;
+        this.function = function;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public R execute(O o) {
+
+        try {
+            return function.apply(((Expression<T>) expression).execute(), o);
+        } catch (ClassCastException e) {
+            throw new IllegalArgumentException();
+        }
+    }
+}
diff --git a/OGP1718-Worms/src/worms/programs/ArgumentExpression.java b/OGP1718-Worms/src/worms/programs/ArgumentExpression.java
new file mode 100644
index 0000000..d5f25e1
--- /dev/null
+++ b/OGP1718-Worms/src/worms/programs/ArgumentExpression.java
@@ -0,0 +1,27 @@
+package worms.programs;
+
+public abstract class ArgumentExpression<R, O> implements Expression<R> {
+
+    public final Type type;
+
+    protected ArgumentExpression(Type type) {
+        this.type = type;
+    }
+
+    @Override
+    public R execute() {
+        throw new  UnsupportedOperationException();
+    }
+
+    public abstract R execute(O o);
+
+
+    public Type getType() {
+        return this.type;
+    }
+    public enum Type {
+        WORM,
+        VAR,
+        GOBJECTS
+    }
+}
diff --git a/OGP1718-Worms/src/worms/programs/BinaryExpression.java b/OGP1718-Worms/src/worms/programs/BinaryExpression.java
index a18d44b..7099b65 100644
--- a/OGP1718-Worms/src/worms/programs/BinaryExpression.java
+++ b/OGP1718-Worms/src/worms/programs/BinaryExpression.java
@@ -2,7 +2,7 @@ package worms.programs;
 
 import java.util.function.BiFunction;
 
-public class BinaryExpression<T, R> extends Expression {
+public class BinaryExpression<T, R> implements Expression<R> {
 
     private final Expression left;
     private final Expression right;
@@ -22,6 +22,5 @@ public class BinaryExpression<T, R> extends Expression {
         } catch (ClassCastException e) {
             throw new IllegalArgumentException();
         }
-
     }
 }
diff --git a/OGP1718-Worms/src/worms/programs/Expression.java b/OGP1718-Worms/src/worms/programs/Expression.java
index 733e272..3620556 100644
--- a/OGP1718-Worms/src/worms/programs/Expression.java
+++ b/OGP1718-Worms/src/worms/programs/Expression.java
@@ -2,7 +2,7 @@ package worms.programs;
 
 import worms.model.Program;
 
-public abstract class Expression<T> extends Program {
+public interface Expression<T> {
 
-    public abstract T execute();
+    T execute();
 }
diff --git a/OGP1718-Worms/src/worms/programs/Procedure.java b/OGP1718-Worms/src/worms/programs/Procedure.java
index d7b28dd..88a9300 100644
--- a/OGP1718-Worms/src/worms/programs/Procedure.java
+++ b/OGP1718-Worms/src/worms/programs/Procedure.java
@@ -2,7 +2,7 @@ package worms.programs;
 
 import worms.model.Program;
 
-public class Procedure extends Program {
+public class Procedure {
 
 
     private final String name;
diff --git a/OGP1718-Worms/src/worms/programs/ProgramFactory.java b/OGP1718-Worms/src/worms/programs/ProgramFactory.java
index 4f44090..31348da 100644
--- a/OGP1718-Worms/src/worms/programs/ProgramFactory.java
+++ b/OGP1718-Worms/src/worms/programs/ProgramFactory.java
@@ -5,9 +5,10 @@ import worms.model.Program;
 import worms.model.Worm;
 import worms.util.ModelException;
 import worms.util.MustNotImplementException;
-import worms.programs.Expression;
 
+import java.util.Comparator;
 import java.util.List;
+import java.util.Set;
 
 public class ProgramFactory implements IProgramFactory<Expression, Statement, Procedure, Program> {
     /**
@@ -195,10 +196,10 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
      */
     @Override
     public Expression createReadVariableExpression(String variableName, SourceLocation sourceLocation) throws ModelException {
-        return new Expression() {
+        return new ArgumentExpression<Object, List<Object>>(ArgumentExpression.Type.VAR) {
             @Override
-            public Object execute() {
-                return findVar(variableName);
+            public Object execute(List<Object> o) {
+                return null;
             }
         };
     }
@@ -211,12 +212,7 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
      */
     @Override
     public Expression createDoubleLiteralExpression(double value, SourceLocation location) throws ModelException {
-        return new Expression<Double>() {
-            @Override
-            public Double execute() {
-                return value;
-            }
-        };
+        return () -> value;
     }
 
     /**
@@ -227,12 +223,7 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
      */
     @Override
     public Expression createBooleanLiteralExpression(boolean value, SourceLocation location) throws ModelException {
-        return new Expression<Boolean>() {
-            @Override
-            public Boolean execute() {
-                return value;
-            }
-        };
+        return () -> value;
     }
 
     /**
@@ -242,12 +233,7 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
      */
     @Override
     public Expression createNullExpression(SourceLocation location) throws ModelException {
-        return new Expression<Object>() {
-            @Override
-            public Object execute() {
-                return null;
-            }
-        };
+        return () -> null;
     }
 
     /**
@@ -259,10 +245,10 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
     @Override
     public Expression createSelfExpression(SourceLocation location) throws ModelException {
 
-        return new Expression<Worm>() {
+        return new ArgumentExpression<Worm, Worm>(ArgumentExpression.Type.WORM) {
             @Override
-            public Worm execute() {
-                return getWorm();
+            public Worm execute(Worm o) {
+                return o;
             }
         };
     }
@@ -320,7 +306,7 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
     @Override
     public Expression createEqualityExpression(Expression left, Expression right, SourceLocation location) throws ModelException {
 
-        return new BinaryExpression<Object, Boolean>(left, right, (l,r) -> l.equals(r));
+        return new BinaryExpression<Object, Boolean>(left, right, (l, r) -> l.equals(r));
     }
 
     /**
@@ -340,7 +326,18 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
 
     @Override
     public Expression createSearchObjectExpression(Expression angleDelta, SourceLocation sourceLocation) throws ModelException {
-        return null;
+
+        return new ArgumentExpression<GameObject, Worm>(ArgumentExpression.Type.GOBJECTS) {
+            @Override
+            public GameObject execute(Worm o) {
+                throw new UnsupportedOperationException();
+            }
+
+            public GameObject execute(Worm o, Set<GameObject> gobjects) {
+                return gobjects.stream().filter(g -> g.getAngle(o) == o.getOrientation()).min(
+                                Comparator.comparingDouble(gameObject -> gameObject.getDistance(o))).orElse(null);
+            }
+        };
     }
 
     /**
@@ -354,7 +351,7 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
     @Override
     public Expression createSameTeamExpression(Expression entity, SourceLocation sourceLocation) throws ModelException, MustNotImplementException {
 
-        return new UnaryExpression<Worm, Boolean>(entity, w -> (w).getTeam().equals((w).getWorld().getActiveWorm().getTeam()));
+        return new ArgumentBinaryExpression<Worm, Worm, Boolean>(entity, (w, y) -> w.getTeam().equals(y.getTeam()), ArgumentExpression.Type.WORM);
     }
 
     /**
@@ -367,7 +364,7 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
     @Override
     public Expression createDistanceExpression(Expression entity, SourceLocation sourceLocation) throws ModelException {
 
-        return new UnaryExpression<GameObject, Double>(entity, (l) -> (l).getWorld().getActiveWorm().getDistance(l));
+        return new ArgumentBinaryExpression<GameObject, Worm, Double>(entity, (e, o) -> e.getDistance(o), ArgumentExpression.Type.WORM);
     }
 
     /**
@@ -379,6 +376,7 @@ public class ProgramFactory implements IProgramFactory<Expression, Statement, Pr
      */
     @Override
     public Expression createIsWormExpression(Expression entity, SourceLocation sourceLocation) throws ModelException {
-        return new UnaryExpression<>(entity, w -> w instanceof Worm);
+
+        return new UnaryExpression<Object, Boolean>(entity, w -> w instanceof Worm);
     }
 }
diff --git a/OGP1718-Worms/src/worms/programs/Statement.java b/OGP1718-Worms/src/worms/programs/Statement.java
index 2e0a3f9..e1a6c1c 100644
--- a/OGP1718-Worms/src/worms/programs/Statement.java
+++ b/OGP1718-Worms/src/worms/programs/Statement.java
@@ -1,8 +1,6 @@
 package worms.programs;
 
-import worms.model.Program;
-
-public class Statement extends Program {
+public class Statement {
 
     private final Type type;
     private final Object data;
diff --git a/OGP1718-Worms/src/worms/programs/UnaryExpression.java b/OGP1718-Worms/src/worms/programs/UnaryExpression.java
index 47153ee..fd2e7a6 100644
--- a/OGP1718-Worms/src/worms/programs/UnaryExpression.java
+++ b/OGP1718-Worms/src/worms/programs/UnaryExpression.java
@@ -2,7 +2,7 @@ package worms.programs;
 
 import java.util.function.Function;
 
-public class UnaryExpression<T, R> extends Expression<R> {
+public class UnaryExpression<T, R> implements Expression<R> {
 
     protected final Expression expression;
     private final Function<T, R> function;