experimenting with water surface mesh

engine/world_generation/src/map/mesh_chunk.rs

@@ -6,6 +6,7 @@ pub struct MeshChunkData {
 	pub heights: [f32; Chunk::AREA],
 	pub textures: [[u32; 2]; Chunk::AREA],
 	pub min_height: f32,
+	pub sealevel: f32,
 }
 
 impl MeshChunkData {
@@ -22,4 +23,18 @@ impl MeshChunkData {
 
 		return data;
 	}
+
+	pub fn get_neighbors_map_bounded(&self, coord: &HexCoord, width: usize, height: usize) -> [f32; 6] {
+		let mut data = [self.min_height; 6];
+		let n_tiles = coord.get_neighbors();
+		for i in 0..6 {
+			let n = n_tiles[i];
+			if !n.is_in_bounds(Chunk::SIZE * width, Chunk::SIZE * height) {
+				continue;
+			}
+			data[i] = self.heights[n.to_index(Chunk::SIZE)];
+		}
+
+		return data;
+	}
 }