Minetest: Change FOV based on player speed.

gistfile1.diff

diff --git a/src/camera.cpp b/src/camera.cpp
index 3d8713d..f9ac800 100644
--- a/src/camera.cpp
+++ b/src/camera.cpp
@@ -354,7 +354,12 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize,
 	m_cameranode->setTarget(m_camera_position + 100 * m_camera_direction);
 
 	// Get FOV setting
-	f32 fov_degrees = g_settings->getFloat("fov");
+	f32 hyp;
+	{
+		v3f spd = player->getSpeed();
+		hyp = hypot(spd.X, spd.Z);
+	}
+	f32 fov_degrees = g_settings->getFloat("fov") + (hyp / 10);
 	fov_degrees = MYMAX(fov_degrees, 10.0);
 	fov_degrees = MYMIN(fov_degrees, 170.0);