From d73e90d915669a1e25ae61e0d09c17b36631f232 Mon Sep 17 00:00:00 2001
From: Paris DOUADY <paris.douady@hotmail.fr>
Date: Thu, 8 Feb 2024 22:20:57 +0100
Subject: [PATCH] bigger subscriber chunk = less draw calls

---
 common/src/chunkid.rs                  | 13 +++++++++++++
 simulation/src/map/change_detection.rs |  4 ++--
 simulation/src/map/terrain.rs          |  4 ++--
 3 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/common/src/chunkid.rs b/common/src/chunkid.rs
index 9a5e4025..f9a07c9e 100644
--- a/common/src/chunkid.rs
+++ b/common/src/chunkid.rs
@@ -10,6 +10,19 @@ pub struct ChunkID<const LEVEL: u16>(pub i16, pub i16);
 
 /// Minimum chunk size, in meters
 const CHUNK_ID_BASE_SIZE: u32 = 16;
+#[allow(non_camel_case_types)]
+mod chunk_types {
+    use super::ChunkID;
+    pub type ChunkID_16 = ChunkID<0>;
+    pub type ChunkID_32 = ChunkID<1>;
+    pub type ChunkID_64 = ChunkID<2>;
+    pub type ChunkID_128 = ChunkID<3>;
+    pub type ChunkID_256 = ChunkID<4>;
+    pub type ChunkID_512 = ChunkID<5>;
+    pub type ChunkID_1024 = ChunkID<6>;
+    pub type ChunkID_2048 = ChunkID<7>;
+}
+pub use chunk_types::*;
 
 impl<const LEVEL: u16> ChunkID<LEVEL> {
     /// The size of a chunk in meters. Smallest at Level=0
diff --git a/simulation/src/map/change_detection.rs b/simulation/src/map/change_detection.rs
index 79b60444..a3e1ba51 100644
--- a/simulation/src/map/change_detection.rs
+++ b/simulation/src/map/change_detection.rs
@@ -3,7 +3,7 @@
 //! It is mostly for rendering purposes by decoupling it from the simulation.
 
 use crate::map::{Building, Intersection, Lot, Road};
-use common::ChunkID;
+use common::{ChunkID, ChunkID_1024};
 use geom::Vec2;
 use std::collections::BTreeSet;
 use std::sync::{Arc, Mutex};
@@ -14,7 +14,7 @@ pub trait CanonicalPosition {
     fn canonical_position(&self) -> Vec2;
 }
 
-pub type SubscriberChunkID = ChunkID<5>;
+pub type SubscriberChunkID = ChunkID_1024;
 
 bitflags::bitflags! {
     #[derive(Debug, Copy, Clone)]
diff --git a/simulation/src/map/terrain.rs b/simulation/src/map/terrain.rs
index 139b6948..35bc4a34 100644
--- a/simulation/src/map/terrain.rs
+++ b/simulation/src/map/terrain.rs
@@ -8,11 +8,11 @@ use serde::{Deserialize, Serialize};
 use std::collections::HashSet;
 use std::ops::Mul;
 
-pub type TerrainChunkID = common::ChunkID<5>;
+pub type TerrainChunkID = common::ChunkID_512;
 
 pub const TERRAIN_CHUNK_RESOLUTION: usize = 32;
 
-pub(super) const CELL_SIZE: f32 = TerrainChunkID::SIZE_F32 / TERRAIN_CHUNK_RESOLUTION as f32; // size is 512m
+pub(super) const CELL_SIZE: f32 = TerrainChunkID::SIZE_F32 / TERRAIN_CHUNK_RESOLUTION as f32; // 512 / 32 = 16
 
 const TREE_GRID_SIZE: usize = 256;