diff --git a/CMakeLists.txt b/CMakeLists.txt
index c46eec1..e3458f6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ project(
 
 file(GLOB_RECURSE SRC_FILES src/*.cpp)
 add_executable(app ${SRC_FILES})
-target_include_directories(app PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include/conductor)
+target_include_directories(app PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
 find_package(SFML 2 REQUIRED network audio graphics window system) 
 target_include_directories(app PUBLIC ${SFML_INCLUDE_DIR}) 
 target_link_libraries(app sfml-graphics)
diff --git a/include/conductor/Conductor.h b/include/conductor/Conductor.h
index 870cb54..f6885a2 100644
--- a/include/conductor/Conductor.h
+++ b/include/conductor/Conductor.h
@@ -2,11 +2,11 @@
 #define DEF_CONDUCTOR
 
 #include <SFML/Graphics.hpp>
-#include "ControllerHandler.h"
-#include "ScheduleHandler.h"
-#include "PhysicsHandler.h"
-#include "DrawHandler.h"
-#include "AudioHandler.h"
+#include "conductor/ControllerHandler.h"
+#include "conductor/ScheduleHandler.h"
+#include "conductor/PhysicsHandler.h"
+#include "conductor/DrawHandler.h"
+#include "conductor/AudioHandler.h"
 
 class Conductor {
   public:
diff --git a/include/entity/strategies/strategy.h b/include/entity/strategies/strategy.h
index 8867b99..5cce64b 100644
--- a/include/entity/strategies/strategy.h
+++ b/include/entity/strategies/strategy.h
@@ -1,7 +1,7 @@
 #ifndef STRATEGY_H
 #define STRATEGY_H
 
-virtual class Strategy 
+class Strategy 
 //For now Strategy seems only a polymorphic-class, usefull only to store every strategies.
 //we'll have to think how we want to use strategies, because if they're all stored as Strategy
 //we can't write strategies.get(0).aMethodFromPhysicalEntity() because strategies.get(0) is of type Strategy,
@@ -25,4 +25,4 @@ Strategy::~Strategy()
 }
 
 
-#endif
\ No newline at end of file
+#endif
diff --git a/include/phx/phx.h b/include/phx/phx.h
index d38ae9f..dfaa647 100644
--- a/include/phx/phx.h
+++ b/include/phx/phx.h
@@ -1,41 +1,19 @@
 #ifndef PHX_PHX_H
 #define PHX_PHX_H
 
-#include <tuple>
+#include "lib/lib.h"
 #include <vector>
+#include <iostream>
+#include "entity/strategies/physical_entity.h"
 
 // Constrain
 // vitessePersoMax < longeurPersoMin
 
-// dependencies
-class Scene;
-class Entity;
-
-typedef std::pair<unsigned int, unsigned int> Vec;
-typedef std::pair<int, int> Vel;
-
-/** 
- * Update each Entity in the Scene
- */
-void update(Scene);
-
-void updateCinematics(Entity&);
-void updateCollision(Scene);
-
-class Cinematics {
-private:
-    Vec m_pos;
-    Vel m_vel;
-};
+Vel updateCinematics(PhysicalEntity const);
 
 class Hitbox {
 private:
     std::vector<Vec> m_vertices;
 };
 
-class PhysicalParameters {
-private:
-    std::vector<int> m_parameters;
-};
-
 #endif
diff --git a/src/main.cpp b/src/main.cppp
similarity index 95%
rename from src/main.cpp
rename to src/main.cppp
index 8be6250..e4bd9c4 100644
--- a/src/main.cpp
+++ b/src/main.cppp
@@ -3,7 +3,7 @@ using namespace std;
 
 #include <SFML/Graphics.hpp>
 
-#include "Conductor.h"
+#include "conductor/Conductor.h"
 
 
 int main(){
diff --git a/src/phx/README.md b/src/phx/README.md
new file mode 100644
index 0000000..a1e6fb0
--- /dev/null
+++ b/src/phx/README.md
@@ -0,0 +1,7 @@
+#PHX
+
+- Use unsigned int from 0 to MAX_INT to calculate the physics
+- Positions are unsigned int pairs, Vectors are signed int pairs. These types are declared in lib.
+- updateCinematics act like the pfd. Do not take into account collisions.
+  Param: PhysicalEntity
+  Output: correction velocity to apply
diff --git a/src/phx/phx.cpp b/src/phx/phx.cpp
new file mode 100644
index 0000000..9fdbbee
--- /dev/null
+++ b/src/phx/phx.cpp
@@ -0,0 +1,22 @@
+#include "phx/phx.h"
+#include <vector>
+
+Vel updateCinematics(PhysicalEntity const ett) {
+  Vel correction (0,0); 
+  Vel ett.getVelocity();
+  std::vector<Force> forces = ett.getForce(); 
+
+  for (auto force: forces) {
+    switch(force) {
+      case weight:
+        correction.second += -10;
+        break;
+
+      default:
+        break;
+    }
+  } 
+
+  return correction; 
+}
+