fixes to camera orbit

engine/world_generation/src/map/map.rs

@@ -141,6 +141,14 @@ impl Map {
 		return Vec3::new(w / 2., self.sealevel, h / 2.);
 	}
 
+	pub fn get_center_with_height(&self) -> Vec3 {
+		let w = self.get_world_width();
+		let h = self.get_world_height();
+		let mut pos = Vec3::new(w / 2., self.sealevel, h / 2.);
+		pos.y = self.sample_height(&HexCoord::from_world_pos(pos));
+		return pos;
+	}
+
 	pub fn get_world_width(&self) -> f32 {
 		return (self.width * Chunk::SIZE) as f32 * SHORT_DIAGONAL;
 	}

engine/world_generation/src/map/mesh_chunk.rs

@@ -1,3 +1,7 @@
+use std::collections::VecDeque;
+
+use bevy::math::IVec2;
+
 use crate::hex_utils::HexCoord;
 
 use super::chunk::Chunk;
@@ -42,4 +46,40 @@ impl MeshChunkData {
 		}
 		return (data, has_land);
 	}
+
+	pub fn caluclate_water_distances(data: &mut Vec<MeshChunkData>, height: usize, width: usize, range: usize) {
+		let mut open: VecDeque<(HexCoord, f32, usize)> = VecDeque::new();
+		let mut closed: Vec<(HexCoord, f32)> = Vec::new();
+		for z in 0..height {
+			for x in 0..width {
+				let chunk = &mut data[z * height + x];
+				chunk.prepare_chunk_open(x * Chunk::SIZE, z * Chunk::SIZE, &mut open);
+			}
+		}
+	}
+
+	fn prepare_chunk_open(&mut self, offset_x: usize, offset_z: usize, open: &mut VecDeque<(HexCoord, f32, usize)>) {
+		for z in 0..Chunk::SIZE {
+			for x in 0..Chunk::SIZE {
+				let coord = HexCoord::from_grid_pos(x + offset_x, z + offset_z);
+				let idx = coord.to_chunk_local_index();
+				let h = self.heights[idx];
+				self.distance_to_land[idx] = if h > self.sealevel { 0.0 } else { 4.0 };
+				if h > self.sealevel {
+					open.push_back((coord, h, 0));
+				}
+			}
+		}
+	}
+
+	fn fill_chunk_borders(
+		&mut self,
+		chunks: &Vec<MeshChunkData>,
+		offset: IVec2,
+		open: &mut VecDeque<(HexCoord, f32, usize)>,
+		closed: &mut Vec<(HexCoord, f32)>,
+	) {
+		self.prepare_chunk_open(offset.x as usize * Chunk::SIZE, offset.y as usize * Chunk::SIZE, open);
+		todo!("Fill closed list with bordering tiles")
+	}
 }