Merge branch 'imbris/fix-drag' into 'master'

Re-fix dragging and fix compilation of the server with the worldgen feature off

Closes #588

See merge request veloren/veloren!1550

server/src/lib.rs

@@ -362,7 +362,10 @@ impl Server {
         let connection_handler = ConnectionHandler::new(network);
 
         // Initiate real-time world simulation
+        #[cfg(feature = "worldgen")]
         rtsim::init(&mut state, &world);
+        #[cfg(not(feature = "worldgen"))]
+        rtsim::init(&mut state);
 
         let this = Self {
             state,
@@ -503,6 +506,7 @@ impl Server {
             dt,
             |dispatcher_builder| {
                 sys::add_server_systems(dispatcher_builder);
+                #[cfg(feature = "worldgen")]
                 rtsim::add_server_systems(dispatcher_builder);
             },
             false,

server/src/rtsim/mod.rs

@@ -82,8 +82,11 @@ pub fn add_server_systems(dispatch_builder: &mut DispatcherBuilder) {
     dispatch_builder.add(tick::Sys, TICK_SYS, &[LOAD_CHUNK_SYS, UNLOAD_CHUNK_SYS]);
 }
 
-pub fn init(state: &mut State, world: &world::World) {
+pub fn init(state: &mut State, #[cfg(feature = "worldgen")] world: &world::World) {
+    #[cfg(feature = "worldgen")]
     let mut rtsim = RtSim::new(world.sim().get_size());
+    #[cfg(not(feature = "worldgen"))]
+    let mut rtsim = RtSim::new(Vec2::new(40, 40));
 
     for _ in 0..2500 {
         let pos = rtsim

voxygen/src/hud/mod.rs

@@ -2628,6 +2628,9 @@ impl Hud {
             WinEvent::Moved(_) => {
                 // Prevent the cursor from being grabbed while the window is being moved as this
                 // causes the window to move erratically
+                // TODO: this creates an issue where if you move the window then you need to
+                // close a menu to re-grab the mouse (and if one isn't already
+                // open you need to open and close a menu)
                 self.show.want_grab = false;
                 true
             },

voxygen/src/window.rs

@@ -941,6 +941,10 @@ impl Window {
                 self.scale_factor = scale_factor;
                 self.events.push(Event::ScaleFactorChanged(scale_factor));
             },
+            WindowEvent::Moved(winit::dpi::PhysicalPosition { x, y }) => {
+                self.events
+                    .push(Event::Moved(Vec2::new(x as u32, y as u32)));
+            },
             WindowEvent::ReceivedCharacter(c) => self.events.push(Event::Char(c)),
             WindowEvent::MouseInput { button, state, .. } => {
                 if let (true, Some(game_inputs)) =