diff --git a/fenscaster.cpp b/fenscaster.cpp
index 4ba5df0..218ddfa 100644
--- a/fenscaster.cpp
+++ b/fenscaster.cpp
@@ -22,9 +22,10 @@ Matrix MAP{
 };
 
 const int SCREEN_HEIGHT=480;
+const int SCREEN_WIDTH=SCREEN_HEIGHT * 2;
+
 const int THREED_VIEW_WIDTH=480;
 const int THREED_VIEW_HEIGHT=480;
-const int SCREEN_WIDTH=SCREEN_HEIGHT * 2;
 const int MAP_SIZE=matrix::width(MAP);
 const int TILE_SIZE=(SCREEN_WIDTH/2) / MAP_SIZE;
 const float FOV = std::numbers::pi / 3.0;
@@ -125,13 +126,13 @@ void draw_3d_view(Fenster &window, int depth, float start_angle, int ray) {
 
   float wall_height = 21000 / fixed_depth;
 
-  if(wall_height > SCREEN_HEIGHT){
-    wall_height = SCREEN_HEIGHT;
+  if(wall_height > window.height()){
+    wall_height = window.height();
   }
 
   draw_rect(window,
-      {size_t(SCREEN_HEIGHT + ray * SCALE),
-      size_t((SCREEN_HEIGHT / 2) - wall_height / 2)},
+      {size_t(window.height() + ray * SCALE),
+      size_t((window.height() / 2) - wall_height / 2)},
       {size_t(SCALE), size_t(wall_height)},
       gray_color(color));
 }
@@ -160,12 +161,12 @@ void ray_casting(Fenster &window, Matrix& map) {
 
 void draw_ceiling_floor(Fenster &window) {
   draw_rect(window,
-      {size_t(SCREEN_HEIGHT), 0},
-      {size_t(SCREEN_HEIGHT), size_t(SCREEN_HEIGHT / 2)},
+      {size_t(window.width() / 2), 0},
+      {size_t(window.height()), size_t(window.height() / 2)},
       gray_color(100));
   draw_rect(window,
-      {size_t(SCREEN_HEIGHT), size_t(SCREEN_HEIGHT / 2)},
-      {size_t(SCREEN_HEIGHT), size_t(SCREEN_HEIGHT / 2)},
+      {size_t(window.width() / 2), size_t(window.height() / 2)},
+      {size_t(window.width() / 2), size_t(window.height() / 2)},
       gray_color(200));
 }
 
diff --git a/fenster/fenster.h b/fenster/fenster.h
index 2da5d4a..9e35a03 100644
--- a/fenster/fenster.h
+++ b/fenster/fenster.h
@@ -364,6 +364,8 @@ public:
   int y() { return this->f.y; }
   int mouse() { return this->f.mouse; }
   int mod() { return this->f.mod; }
+  int width() { return this->f.width; }
+  int height() { return this->f.height; }
 };
 #endif /* __cplusplus */