CHUNK GENERATION IS REAL

src/common/component/grid.rs

@@ -0,0 +1,46 @@
+use crate::client::render::voxel::VoxelColor;
+use bevy_ecs::{bundle::Bundle, component::Component};
+use ndarray::{Array3, ArrayBase, Dim, SliceArg};
+use std::ops::Range;
+
+use super::{Orientation, Pos};
+
+pub type VoxelGrid = TrackedGrid<VoxelColor>;
+pub type GridRegion = (Range<usize>, Range<usize>, Range<usize>);
+#[derive(Debug, Clone, Component)]
+pub struct TrackedGrid<T> {
+    data: Array3<T>,
+    changes: Vec<GridRegion>,
+}
+
+impl<T> TrackedGrid<T> {
+    pub fn new(data: Array3<T>) -> Self {
+        Self {
+            data,
+            changes: Vec::new(),
+        }
+    }
+    pub fn view_slice_mut<I: SliceArg<Dim<[usize; 3]>>>(
+        &mut self,
+        slice: I,
+    ) -> ArrayBase<ndarray::ViewRepr<&mut T>, <I as SliceArg<Dim<[usize; 3]>>>::OutDim> {
+        self.data.slice_mut(slice)
+    }
+    pub fn take_changes(&mut self) -> Vec<GridRegion> {
+        std::mem::take(&mut self.changes)
+    }
+}
+
+impl<T> std::ops::Deref for TrackedGrid<T> {
+    type Target = Array3<T>;
+    fn deref(&self) -> &Self::Target {
+        &self.data
+    }
+}
+
+#[derive(Bundle, Clone)]
+pub struct VoxelGridBundle {
+    pub pos: Pos,
+    pub orientation: Orientation,
+    pub grid: VoxelGrid,
+}