From a3e36a50ababd615da7db1b26158c7906a5def01 Mon Sep 17 00:00:00 2001
From: Joshua Barretto <joshua.s.barretto@gmail.com>
Date: Sun, 23 Feb 2020 18:13:51 +0000
Subject: [PATCH] Simpler terrain spiral rendering

---
 voxygen/src/scene/terrain.rs | 32 ++++++++------------------------
 1 file changed, 8 insertions(+), 24 deletions(-)

diff --git a/voxygen/src/scene/terrain.rs b/voxygen/src/scene/terrain.rs
index e6c34934f6..f51a4b69f1 100644
--- a/voxygen/src/scene/terrain.rs
+++ b/voxygen/src/scene/terrain.rs
@@ -1399,20 +1399,12 @@ impl<V: RectRasterableVol> Terrain<V> {
             (e as i32).div_euclid(sz as i32)
         });
 
-        let chunks = &self.chunks;
         let chunk_iter = Spiral2d::new()
-            .scan(0, |n, rpos| {
-                if *n >= chunks.len() {
-                    None
-                } else {
-                    let pos = focus_chunk + rpos;
-                    Some(chunks.get(&pos).map(|c| {
-                        *n += 1;
-                        (pos, c)
-                    }))
-                }
+            .filter_map(|rpos| {
+                let pos = focus_chunk + rpos;
+                self.chunks.get(&pos).map(|c| (pos, c))
             })
-            .filter_map(|x| x);
+            .take(self.chunks.len());
 
         // Opaque
         for (_, chunk) in chunk_iter.clone() {
@@ -1440,20 +1432,12 @@ impl<V: RectRasterableVol> Terrain<V> {
             (e as i32).div_euclid(sz as i32)
         });
 
-        let chunks = &self.chunks;
         let chunk_iter = Spiral2d::new()
-            .scan(0, |n, rpos| {
-                if *n >= chunks.len() {
-                    None
-                } else {
-                    let pos = focus_chunk + rpos;
-                    Some(chunks.get(&pos).map(|c| {
-                        *n += 1;
-                        (pos, c)
-                    }))
-                }
+            .filter_map(|rpos| {
+                let pos = focus_chunk + rpos;
+                self.chunks.get(&pos).map(|c| (pos, c))
             })
-            .filter_map(|x| x);
+            .take(self.chunks.len());
 
         // Terrain sprites
         for (pos, chunk) in chunk_iter.clone() {