From 9ed19bfc0e6384184d5bd009f2f71db70f280b47 Mon Sep 17 00:00:00 2001
From: griffi-gh <prasol258@gmail.com>
Date: Thu, 26 Jan 2023 03:54:41 +0100
Subject: [PATCH] skip drawing empty chunks

---
 src/world/render.rs   | 26 ++++++++++++++------------
 src/world/worldgen.rs |  8 +-------
 2 files changed, 15 insertions(+), 19 deletions(-)

diff --git a/src/world/render.rs b/src/world/render.rs
index 70e6132..ce5c115 100644
--- a/src/world/render.rs
+++ b/src/world/render.rs
@@ -73,18 +73,20 @@ pub fn draw_world(
     if let Some(key) = chunk.mesh_index {
       let mesh = meshes.get(key).expect("Mesh index pointing to nothing");
       let world_position = (position.as_vec3() * CHUNK_SIZE as f32).to_array();
-      target.0.draw(
-        &mesh.vertex_buffer,
-        &mesh.index_buffer,
-        &program.0,
-        &uniform! {
-          position_offset: world_position,
-          view: view,
-          perspective: perspective,
-          tex: texture_sampler
-        },
-        &draw_parameters
-      ).unwrap();
+      if mesh.index_buffer.len() > 0 { //maybe this is a bit hacky?
+        target.0.draw(
+          &mesh.vertex_buffer,
+          &mesh.index_buffer,
+          &program.0,
+          &uniform! {
+            position_offset: world_position,
+            view: view,
+            perspective: perspective,
+            tex: texture_sampler
+          },
+          &draw_parameters
+        ).unwrap();
+      }
     }
   }
 }
diff --git a/src/world/worldgen.rs b/src/world/worldgen.rs
index fa72ca6..1079975 100644
--- a/src/world/worldgen.rs
+++ b/src/world/worldgen.rs
@@ -6,19 +6,13 @@ use super::{
 
 pub fn generate_world(position: IVec3, _seed: u32) -> BlockData {
   let mut blocks = Box::new([[[Block::Air; CHUNK_SIZE]; CHUNK_SIZE]; CHUNK_SIZE]);
+  //TODO actual world generation
   if position.y == -1 {
     for x in 0..CHUNK_SIZE {
       for z in 0..CHUNK_SIZE {
         blocks[x][0][z] = Block::Grass;
       }
     }
-  } else {
-    blocks[0][0][0] = Block::Stone;
-    blocks[1][0][0] = Block::Stone;
-    blocks[0][1][0] = Block::Stone;
-    blocks[0][2][0] = Block::Stone;
-    blocks[0][0][1] = Block::Stone;
   }
-  //TODO actual world generation
   blocks
 }