moved renderer to separate thread, add evenio and start structure, make it so you can add stuff

src/client/system/voxel_grid.rs

@@ -0,0 +1,49 @@
+use evenio::{
+    event::{EventMut, GlobalEvent, Insert, ReceiverMut, Sender, Spawn},
+    fetch::Single,
+};
+use nalgebra::{Rotation3, Vector3};
+use ndarray::Axis;
+
+use crate::{
+    client::{
+        component::RenderComponent,
+        render::{CreateVoxelGrid, RenderMessage},
+    },
+    world::component::{Orientation, Pos, VoxelGrid},
+};
+
+#[derive(GlobalEvent)]
+pub struct SpawnVoxelGrid {
+    pub pos: Vector3<f32>,
+    pub orientation: Rotation3<f32>,
+    pub grid: VoxelGrid,
+}
+
+pub fn handle_create_grid(
+    r: ReceiverMut<SpawnVoxelGrid>,
+    renderer: Single<&RenderComponent>,
+    mut s: Sender<(Spawn, Insert<Pos>, Insert<Orientation>, Insert<VoxelGrid>)>,
+) {
+    let SpawnVoxelGrid {
+        pos,
+        orientation,
+        grid,
+    } = EventMut::take(r.event);
+    renderer
+        .send(RenderMessage::CreateVoxelGrid(CreateVoxelGrid {
+            pos,
+            orientation,
+            dimensions: Vector3::new(
+                grid.len_of(Axis(0)),
+                grid.len_of(Axis(1)),
+                grid.len_of(Axis(2)),
+            ),
+            grid: grid.iter().cloned().collect(),
+        }))
+        .expect("render broke");
+    let e = s.spawn();
+    s.insert(e, Pos(pos));
+    s.insert(e, Orientation(orientation));
+    s.insert(e, grid);
+}