Try to fix some bugs:

- Z fighting with LOD terrain and water.
- Audio SFX not playing.

assets/voxygen/shaders/lod-terrain-vert.glsl

@@ -60,7 +60,7 @@ void main() {
     // // float surfaceAlt = min(floor(f_pos.z), floor(alt_at_real(cam_pos.xy))); // faces_fluid ? max(ceil(f_pos.z), floor(f_alt)) : floor(f_alt);
 
 	// f_pos.z -= max(sign(view_distance.x - distance(focus_pos.xy, f_pos.xy)), 0.0) * (32.0 * view_distance.z / 255 + 32.0 * max(0.0, f_pos.z - cam_pos.z));
-	f_pos.z -= max(view_distance.x - distance(focus_pos.xy, f_pos.xy), 0.0) * (1.0 + max(0.0, f_pos.z - focus_pos.z));
+	f_pos.z -= 0.1 + max(view_distance.x - distance(focus_pos.xy, f_pos.xy), 0.0) * (1.0 + max(0.0, f_pos.z - focus_pos.z));
 
     // vec3 wRayinitial = f_pos; // cam_pos.z < f_pos.z ? f_pos : cam_pos.xyz;
     // vec3 wRayfinal = cam_pos.xyz; // cam_pos.z < f_pos.z ? cam_pos.xyz : f_pos;

voxygen/src/audio/sfx/event_mapper/combat/mod.rs

@@ -53,7 +53,8 @@ impl EventMapper for CombatEventMapper {
         let sfx_event_bus = ecs.read_resource::<EventBus<SfxEventItem>>();
         let mut sfx_emitter = sfx_event_bus.emitter();
 
-        let cam_pos = camera.dependents().cam_pos;
+        let focus_off = camera.get_focus_pos().map(f32::trunc);
+        let cam_pos = camera.dependents().cam_pos + focus_off;
 
         for (entity, pos, loadout, character) in (
             &ecs.entities(),

voxygen/src/audio/sfx/event_mapper/movement/mod.rs

@@ -50,7 +50,8 @@ impl EventMapper for MovementEventMapper {
         let sfx_event_bus = ecs.read_resource::<EventBus<SfxEventItem>>();
         let mut sfx_emitter = sfx_event_bus.emitter();
 
-        let cam_pos = camera.dependents().cam_pos;
+        let focus_off = camera.get_focus_pos().map(f32::trunc);
+        let cam_pos = camera.dependents().cam_pos + focus_off;
 
         for (entity, pos, vel, body, physics, character) in (
             &ecs.entities(),

voxygen/src/audio/sfx/mod.rs

@@ -234,8 +234,10 @@ impl SfxMgr {
         }
 
         let ecs = state.ecs();
+        let focus_off = camera.get_focus_pos().map(f32::trunc);
+        let cam_pos = camera.dependents().cam_pos + focus_off;
 
-        audio.set_listener_pos(camera.dependents().cam_pos, camera.dependents().cam_dir);
+        audio.set_listener_pos(cam_pos, camera.dependents().cam_dir);
 
         // TODO: replace; deprecated in favor of outcomes
         self.event_mapper
@@ -247,7 +249,7 @@ impl SfxMgr {
         for event in events {
             let position = match event.pos {
                 Some(pos) => pos,
-                _ => camera.dependents().cam_pos,
+                _ => cam_pos,
             };
 
             if let Some(item) = self.triggers.get_trigger(&event.sfx) {

voxygen/src/scene/lod.rs

@@ -40,7 +40,10 @@ impl Lod {
 
     pub fn get_data(&self) -> &LodData { &self.data }
 
-    pub fn set_detail(&mut self, detail: u32) { self.data.tgt_detail = detail.max(100).min(2500); }
+    pub fn set_detail(&mut self, detail: u32) {
+        // Make sure the recorded detail is even.
+        self.data.tgt_detail = detail.max(100).min(2500) - self.data.tgt_detail % 2;
+    }
 
     pub fn maintain(&mut self, renderer: &mut Renderer, _time_of_day: f64) {
         if self
@@ -66,8 +69,12 @@ impl Lod {
 }
 
 fn create_lod_terrain_mesh(detail: u32) -> Mesh<LodTerrainPipeline> {
+    // detail is even, so we choose odd detail (detail + 1) to create two even
+    // halves with an empty hole.
+    let detail = detail + 1;
     Spiral2d::new()
         .take((detail * detail) as usize)
+        .skip(1)
         .map(|pos| {
             let x = pos.x + detail as i32 / 2;
             let y = pos.y + detail as i32 / 2;