World 0,0 is now at the center of the node texture

src/game/mod.rs

@@ -67,7 +67,10 @@ impl Game {
         // Get positions
         let pos = camera.get_position();
         let pos = Vector3{x: pos.x as i32, y: pos.y as i32, z: pos.z as i32};
-        let chunk_pos = pos / world::chunk::SIZE as i32;
+        let mut chunk_pos = pos / world::chunk::SIZE as i32;
+        if pos.x < 0 { chunk_pos.x -= 1; }
+        if pos.y < 0 { chunk_pos.y -= 1; }
+        if pos.z < 0 { chunk_pos.z -= 1; }
 
         // Block position
         if self.prev_pos == None || self.prev_pos != Some(pos) {

src/game/world/generator.rs

@@ -1,3 +1,4 @@
+use std::time::Instant;
 use cgmath::Vector3;
 use noise::{Perlin, NoiseFn};
 use rand::{Rng, prelude::ThreadRng};
@@ -16,21 +17,22 @@ impl WorldGen {
     /*
     *   Generate height map for given block position
     */
-    fn gen_height_map(x: usize, z: usize, rand: &mut ThreadRng, noise: &Perlin) -> ([[usize;block::SIZE]; block::SIZE], usize) {
-        let x = x * block::SIZE;
-        let z = z * block::SIZE;
+    fn gen_height_map(x: i32, z: i32, rand: &mut ThreadRng, noise: &Perlin) -> ([[usize;block::SIZE]; block::SIZE], usize) {
+        let size = block::SIZE as i32;
+        let x = x * size;
+        let z = z * size;
 
         // Generate map
         let mut max: usize = 0;
         let mut map = [[0_usize; block::SIZE]; block::SIZE];
-        for lx in 0..block::SIZE {
-            for lz in 0..block::SIZE {
+        for lx in 0..size {
+            for lz in 0..size {
                 let value = (noise.get([(x + lx) as f64 / SCALE, (z + lz) as f64 /SCALE]) + 1.0) / 2.0;
                 let mut h = (value * 30.0) as usize;
                 h += (rand.gen::<f32>() * 2.0) as usize;
                 if h == 0 { h = 1; }
                 if h > max { max = h; }
-                map[lx][lz] = h;
+                map[lx as usize][lz as usize] = h;
             }
         }
         (map, max)
@@ -44,7 +46,7 @@ impl WorldGen {
         let noise = Perlin::new();
 
         // Generate height map
-        let (map, _max) = WorldGen::gen_height_map(block_pos.x as usize, block_pos.z as usize, &mut rng, &noise);
+        let (map, _max) = WorldGen::gen_height_map(block_pos.x, block_pos.z, &mut rng, &noise);
         
         // Fill
         for x in 0..block::SIZE {

src/game/world/mod.rs

@@ -2,6 +2,7 @@ mod generator;
 mod data;
 pub mod chunk;
 pub mod block;
+use std::sync::Arc;
 use std::time::Instant;
 use std::path::PathBuf;
 use std::io::Write;

src/renderer/buffers/content.rs

@@ -103,6 +103,10 @@ impl Content {
 
     pub fn write(&mut self, queue: &wgpu::Queue, block_pos: &Vector3<i32>, block: &WorldBlock) {
 
+        // 0,0 at node buffer center
+        let half = (NODE_TEX_SIZE / 2);
+        let block_pos = block_pos + &Vector3{x: half as i32, y: half as i32, z: half as i32};
+
         // Get node
         let index = (block_pos.x + NODE_TEX_SIZE as i32 * (block_pos.y + NODE_TEX_SIZE as i32 * block_pos.z)) as usize;
         let mut value = self.node_buffer[index] as usize;
@@ -167,7 +171,7 @@ impl Content {
 
         self.node_buffer = result;
         self.node_dirty = true;
-        println!("Shifted in {} ms", timer.elapsed().as_millis());
+        println!("Shifted node buffer by {:?} in {} ms", offset, timer.elapsed().as_millis());
     }
 
     fn write_nodes(&mut self, queue: &wgpu::Queue, z: usize) {

src/renderer/buffers/mod.rs

@@ -1,7 +1,7 @@
 mod uniform;
 pub use uniform::Uniform;
 pub use uniform::UniformValues;
-mod content;
+pub mod content;
 pub use content::Content;
 mod materials;
 pub use materials::Materials;

src/renderer/mod.rs

@@ -117,7 +117,9 @@ impl Renderer {
     pub fn render(&mut self) -> Result<(), wgpu::SwapChainError> {
         
         // Update uniform buffer
-        let offset = Vector3{x: self.world_offset.x as f32, y: self.world_offset.y as f32, z: self.world_offset.z as f32 };
+        let half = (buffers::content::NODE_TEX_SIZE / 2) as i32;
+        let offset = Vector3{x: (self.world_offset.x + half) as f32, y: (self.world_offset.y + half) as f32, z: (self.world_offset.z + half) as f32 };
+
         self.buffers.uniforms.values.update(&self.camera, offset, self.start.elapsed().as_secs_f32());
         self.queue.write_buffer(&self.buffers.uniforms.buffer, 0, bytemuck::cast_slice(&[self.buffers.uniforms.values]));