diff --git a/builds/draw_bonus.o b/builds/draw_bonus.o
index 2eed6e9..a1b8052 100644
Binary files a/builds/draw_bonus.o and b/builds/draw_bonus.o differ
diff --git a/builds/fdf.o b/builds/fdf.o
index adebeb9..101d3c5 100644
Binary files a/builds/fdf.o and b/builds/fdf.o differ
diff --git a/builds/keypress_bonus.o b/builds/keypress_bonus.o
index 1085807..6559acf 100644
Binary files a/builds/keypress_bonus.o and b/builds/keypress_bonus.o differ
diff --git a/builds/modifs.o b/builds/modifs.o
index a613194..e52e207 100644
Binary files a/builds/modifs.o and b/builds/modifs.o differ
diff --git a/builds/parse.o b/builds/parse.o
index c92ea48..f849edb 100644
Binary files a/builds/parse.o and b/builds/parse.o differ
diff --git a/fdf b/fdf
index 018bcd4..9c8fcb3 100755
Binary files a/fdf and b/fdf differ
diff --git a/includes/fdf.h b/includes/fdf.h
index 84e94bd..17be47e 100644
--- a/includes/fdf.h
+++ b/includes/fdf.h
@@ -71,7 +71,10 @@ int		**parse_map(t_fdf *fdf, int fd);
 // steps size for the hight transform with p and o
 // must be > 0
 // 100 is small, 1 is the biggest
-# define Z_HIGHT			10
+# define Z_HEIGHT			10
+
+// color for altitude
+# define Z_COLOR			0xffffff;
 
 # define ESCAPE			65307
 # define UP				65362
diff --git a/srcs/draw_bonus.c b/srcs/draw_bonus.c
index d89679f..faee580 100644
--- a/srcs/draw_bonus.c
+++ b/srcs/draw_bonus.c
@@ -72,15 +72,20 @@ void	draw_lines(t_fdf *fdf, int *start, int *end)
 void	draw_color_pixel(t_fdf *fdf, int new_x, int new_y, int z)
 {
 	int	color;
+	int height;
 
-	color = 0xffffff;
-	z -= (z * fdf->zoom) / fdf->offset;
-	if (z > 0)
-		z /= fdf->altitude;
-	if (z > fdf->min_z && fdf->z_amplitude)
+	color = Z_COLOR;
+	height = z;
+	if (height != 0)
+		height /= fdf->altitude;
+	//height -= (height * fdf->zoom) / fdf->offset;
+	height -= height / fdf->offset;
+	if (height > fdf->min_z && fdf->z_amplitude)
 	{
-		color = color ^ (((0xff / fdf->z_amplitude) * (z - fdf->min_z)) << 16);
-		color = color ^ (((0xff / fdf->z_amplitude) * (z - fdf->min_z)) << 0);
+		color = color ^ (((0xff) * (height - fdf->min_z)) << 16);
+		color = color ^ (((0xff) * (height - fdf->min_z)) << 0);
+		//color = color ^ (((0xff / fdf->z_amplitude) * (height - fdf->min_z)) << 16);
+		//color = color ^ (((0xff / fdf->z_amplitude) * (height - fdf->min_z)) << 0);
 	}
 	draw_pixel(fdf, new_x, new_y, color);
 }
diff --git a/srcs/keypress_bonus.c b/srcs/keypress_bonus.c
index d6121dd..726b499 100644
--- a/srcs/keypress_bonus.c
+++ b/srcs/keypress_bonus.c
@@ -30,7 +30,7 @@ void	keypress_more(int keycode, t_fdf *fdf)
 	else if (keycode == O)
 		fdf->altitude++;
 	else if (keycode == P)
-		if (fdf->altitude > 0)
+		//if (fdf->altitude > 0)
 			fdf->altitude--;
 }
 
diff --git a/srcs/modifs.c b/srcs/modifs.c
index f18fa2e..176b8a5 100644
--- a/srcs/modifs.c
+++ b/srcs/modifs.c
@@ -21,6 +21,7 @@ int	*new_coordinates(t_fdf *fdf, int i, int j)
 	int	x;
 	int	y;
 	int	z;
+	int height;
 	int	*point;
 
 	point = ft_calloc(3, sizeof(int));
@@ -28,14 +29,12 @@ int	*new_coordinates(t_fdf *fdf, int i, int j)
 	y = j * (fdf->offset + fdf->zoom);
 	x -= (fdf->map_size_x + fdf->zoom * fdf->map_width) / 2;
 	y -= (fdf->map_size_y + fdf->zoom * fdf->map_height) / 2;
-	if (fdf->altitude > 0)
-		z = fdf->map[j][i] * fdf->altitude;
-	else if (fdf->altitude == 0)
-		z = 0;
-	else
-		z = fdf->map[j][i];
+	z = fdf->map[j][i] * fdf->altitude;
 	z += (z * fdf->zoom) / fdf->offset;
-	z /= Z_HIGHT;
+	height = Z_HEIGHT;
+	if (height == 0)
+		height = 1;
+	z /= height;
 	point[0] = x * cos(fdf->rad_x) + y * sin(fdf->rad_x);
 	point[1] = y * cos(fdf->rad_x) - x * sin(fdf->rad_x);
 	point[1] = point[1] * cos(fdf->rad_y) - -z * sin(fdf->rad_y);