diff --git a/include/strategy_roles/striker.h b/include/strategy_roles/striker.h
index 6500e71..44e0574 100644
--- a/include/strategy_roles/striker.h
+++ b/include/strategy_roles/striker.h
@@ -19,7 +19,7 @@
 #define GOALIE_ATKDIR_PLUSANG2_COR 70
 #define GOALIE_ATKDIR_PLUSANG3_COR 70
 
-class Striker : public Game, public PositionSysZone{
+class Striker : public Game{
 
     public:
         Striker();
diff --git a/include/systems/position/positionsys_camera.h b/include/systems/position/positionsys_camera.h
index a099743..2bde499 100644
--- a/include/systems/position/positionsys_camera.h
+++ b/include/systems/position/positionsys_camera.h
@@ -29,8 +29,8 @@ class PositionSysCamera : public PositionSystem{
 
     public:
         PositionSysCamera();
-        void goCenter();
-        void centerGoal();
+        void goCenter() override;
+        void centerGoal() override;
         void setMoveSetpoints(int x, int y);
         void addMoveOnAxis(int x, int y);
         void update() override;
diff --git a/include/systems/systems.h b/include/systems/systems.h
index 84d4e5e..021149c 100644
--- a/include/systems/systems.h
+++ b/include/systems/systems.h
@@ -11,4 +11,20 @@ class PositionSystem{
     public:
         virtual void update() = 0;
         virtual void test() = 0;
+        virtual void goCenter() = 0;
+        virtual void centerGoal() = 0;
+};
+
+class LineSystemEmpty : public LineSystem{
+    public:
+        void update() override;
+        void test() override;
+};
+
+class PositionSystemEmpty : public PositionSystem{
+    public:
+        void update() override;
+        void test() override;
+        void goCenter() override;
+        void centerGoal() override;
 };
\ No newline at end of file
diff --git a/src/strategy_roles/striker.cpp b/src/strategy_roles/striker.cpp
index 591a641..1f596fe 100644
--- a/src/strategy_roles/striker.cpp
+++ b/src/strategy_roles/striker.cpp
@@ -23,7 +23,7 @@ void Striker::init(){
 
 void Striker::realPlay(){
   if(CURRENT_DATA_READ.ballSeen) this->striker();
-  else ((PositionSysCamera*)ps)->goCenter();
+  else ps->goCenter();
 }
 
 void Striker::striker() {
diff --git a/src/system/lines/linesys_empty.cpp b/src/system/lines/linesys_empty.cpp
new file mode 100644
index 0000000..0f25ac9
--- /dev/null
+++ b/src/system/lines/linesys_empty.cpp
@@ -0,0 +1,11 @@
+#include "systems/systems.h"
+#include "vars.h"
+#include "sensors/sensors.h"
+#include <Arduino.h>
+
+void LineSystemEmpty::update(){
+    tookLine = false;
+}
+void LineSystemEmpty::test(){
+    DEBUG.println("Empty LineSystem ready!");
+}
\ No newline at end of file
diff --git a/src/system/positions/positionsys_empty.cpp b/src/system/positions/positionsys_empty.cpp
new file mode 100644
index 0000000..2ccccf0
--- /dev/null
+++ b/src/system/positions/positionsys_empty.cpp
@@ -0,0 +1,19 @@
+#include "systems/systems.h"
+#include "vars.h"
+#include "sensors/sensors.h"
+#include <Arduino.h>
+
+void PositionSystemEmpty::update(){
+}
+
+void PositionSystemEmpty::test(){
+    DEBUG.println("Empty PositionSystemEmpty ready!");
+}
+
+void PositionSystemEmpty::goCenter(){
+    drive->prepareDrive(0,0,0);
+}
+
+void PositionSystemEmpty::centerGoal(){
+    drive->prepareDrive(0,0,0);
+}