diff --git a/KKK/game/CMakeLists.txt b/KKK/game/CMakeLists.txt
index 562fa03..b6b0151 100644
--- a/KKK/game/CMakeLists.txt
+++ b/KKK/game/CMakeLists.txt
@@ -8,10 +8,15 @@ find_package(X11 REQUIRED)
 set(GAME_SRC
     src/main.cpp
     src/opengl.cpp
+    src/config.cpp
+    src/simulation.cpp
   )
 
 set(GAME_HEADERS
-    include/opengl.h
+  include/opengl.h
+  include/vector.h
+  include/config.h
+  include/simulation.h
   )
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
diff --git a/KKK/game/include/config.h b/KKK/game/include/config.h
index e1ea4ba..aacc673 100644
--- a/KKK/game/include/config.h
+++ b/KKK/game/include/config.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#include <stdlib>
-#include <stdio>
-
 struct Config {
   int maxPlayers;
   int numPlanets;
@@ -33,4 +30,4 @@ class ConfigParser{
  private:
  protected:
  public:
-}
+};
diff --git a/KKK/game/include/simulation.h b/KKK/game/include/simulation.h
new file mode 100644
index 0000000..beeb928
--- /dev/null
+++ b/KKK/game/include/simulation.h
@@ -0,0 +1,50 @@
+#pragma once
+
+#include <include/vector.h>
+
+typedef struct
+{
+  Vec2d position;
+  Vec2d speed;
+  int live;
+  int leftSource;
+  int stale;
+} SimMissile;
+
+typedef struct
+{
+  Vec2d* dot;
+  SimMissile missile;
+  int length;
+  int player;
+  double angle;
+  double velocity;
+} SimShot;
+
+typedef struct
+{
+  SimShot* shot;
+  int currentShot;
+  Vec2d position;
+  double angle;
+  double velocity;
+  double energy;
+  double oldVelocity;
+  int watch;
+  int deaths;
+  int kills;
+  int shots;
+  int active;
+  int valid;
+  int didShoot;
+  int timeout;
+  int timeoutcnt;
+  char name[16];
+} SimPlayer;
+
+typedef struct
+{
+  Vec2d position;
+  double radius;
+  double mass;
+} SimPlanet;
diff --git a/KKK/game/include/vector.h b/KKK/game/include/vector.h
new file mode 100644
index 0000000..8bbe558
--- /dev/null
+++ b/KKK/game/include/vector.h
@@ -0,0 +1,51 @@
+#pragma once
+
+struct Vec2d
+{
+  double x;
+  double y;
+
+  Vec2d & operator+=(const Vec2d& rhs) {
+    x+=rhs.x;
+    y+=rhs.y;
+    return *this;
+  }
+  Vec2d & operator-=(const Vec2d& rhs) {
+    x-=rhs.x;
+    y-=rhs.y;
+    return *this;
+  }
+  Vec2d & operator*=(const double& rhs) {
+    x*=rhs;
+    y*=rhs;
+    return *this;
+  }
+  Vec2d & operator/=(const double& rhs) {
+    x/=rhs;
+    y/=rhs;
+    return *this;
+  }
+  const Vec2d operator+(const Vec2d& rhs) const {
+    Vec2d result = *this;
+    result += rhs;
+    return result;
+  }
+  const Vec2d operator-(const Vec2d& rhs) const {
+    Vec2d result = *this;
+    result -= rhs;
+    return result;
+  }
+  const double operator*(const Vec2d& rhs) const {
+    return (this->x * rhs.x) + (this->y * rhs.y);
+  }
+  const Vec2d operator*(const double& rhs) const {
+    Vec2d result = *this;
+    result *= rhs;
+    return result;
+  }
+  const Vec2d operator/(const double& rhs) const {
+    Vec2d result = *this;
+    result /= rhs;
+    return result;
+  }
+};
diff --git a/KKK/game/src/main.cpp b/KKK/game/src/main.cpp
index 495c739..132a2ba 100644
--- a/KKK/game/src/main.cpp
+++ b/KKK/game/src/main.cpp
@@ -31,7 +31,7 @@ public:
 
 int main(int argc, const char *argv[]) {
   MainWindow window(500, 500);
-  window.setmaxfps(60);
+  window.set_maxfps(60.0);
   window.loop();
   window.stop();
 }
diff --git a/KKK/game/src/simulation.cpp b/KKK/game/src/simulation.cpp
new file mode 100644
index 0000000..a0b9b44
--- /dev/null
+++ b/KKK/game/src/simulation.cpp
@@ -0,0 +1,2 @@
+#include <include/simulation.h>
+