writing chunks instead of blocks

src/game/mod.rs

@@ -8,7 +8,7 @@ use winit::event::Event;
 use player::Player;
 use world::World;
 
-const RENDER_DIST: i32 = 3;
+pub const RENDER_DIST: i32 = 3;
 
 pub enum GameState {
     Paused,
@@ -61,18 +61,18 @@ impl Game {
             if dir.x != 0 { dir = Vector3{x: dir.x.clamp(-1, 1), y:0, z:0 } }
             else if dir.y != 0 { dir = Vector3{x:0, y:dir.y.clamp(-1, 1), z:0 } }
             else if dir.z != 0 { dir = Vector3{x:0, y:0, z:dir.z.clamp(-1, 1) } }
-            else {  }
+            else { self.prev_chunk_pos = Some(prev_chunk_pos+dir); return; }
 
-            if dir.x != 0 || dir.y != 0 || dir.z != 0 {
-                // Shift world
-                renderer.shift(dir * world::chunk::SIZE as i32);
-                // Load chunks at the edge
-                let center = chunk_pos.clone() + RENDER_DIST*dir;
-                let mask = Vector3{x: dir.x.abs(), y: dir.y.abs(), z: dir.z.abs()};
-                for a in -RENDER_DIST..RENDER_DIST+1 {
-                    let pos = center + Vector3{x: mask.z*a, y: 0, z: mask.x*a};
-                    self.world.load_chunk(pos);
-                }
+            // Shift world
+            println!("Shiftin by {:?}", dir);
+            renderer.shift(dir * world::chunk::SIZE as i32);
+
+            // Load chunks at the edge
+            let center = chunk_pos.clone() + RENDER_DIST*dir;
+            let mask = Vector3{x: dir.x.abs(), y: dir.y.abs(), z: dir.z.abs()};
+            for a in -RENDER_DIST..RENDER_DIST+1 {
+                let pos = center + Vector3{x: mask.z*a, y: 0, z: mask.x*a};
+                self.world.load_chunk(pos);
             }
 
             self.prev_chunk_pos = Some(prev_chunk_pos+dir);
@@ -117,11 +117,12 @@ impl Game {
         self.world.update();
 
         // Send dirty chunks to renderer
-        // TODO: Unload chunks above certain radius
-        for (pos, chunk) in self.world.all_chunks() {
-            if chunk.dirty {
-                chunk.write_to(renderer, pos * world::chunk::SIZE as i32);
-                chunk.dirty = false;
+        if chunk_pos == self.prev_chunk_pos.unwrap_or(chunk_pos) {
+            for (pos, chunk) in self.world.all_chunks() {
+                if chunk.dirty {
+                    renderer.write_chunk(pos, chunk);
+                    chunk.dirty = false;
+                }
             }
         }
     }

src/game/world/chunk.rs

@@ -43,7 +43,7 @@ impl WorldChunk {
         // Header
         let (header_bytes, bytes) = bytes.split_at(128);
         let file_ver = header_bytes[0];
-        let num_blocks = LittleEndian::read_u32(&header_bytes[1..5]) as usize;
+        let mut num_blocks = LittleEndian::read_u32(&header_bytes[1..5]) as usize;
         assert_eq!(file_ver, 1);
 
         // Nodes
@@ -57,7 +57,8 @@ impl WorldChunk {
         // Blocks
         let mut block_bytes = vec![0_u8; num_blocks*block::SIZE_QB];
         if lz4::decompress(&block_bytes_compressed, &mut block_bytes[0..num_blocks*block::SIZE_QB]).is_err() {
-            
+            println!("Decompression failed");
+            num_blocks = 0;
         }
 
         for i in 0..num_blocks {
@@ -124,10 +125,4 @@ impl WorldChunk {
         // Return block reference
         &mut self.blocks[(value-1) as usize]
     }
-
-    pub fn write_to(&self, renderer: &mut dyn RendererView, offset: Vector3<i32>) {
-        for (blpos, block) in self.all_blocks() {
-            renderer.write(&(offset + blpos), block);
-        }
-    }
 }

src/renderer/buffers/content.rs

@@ -102,6 +102,7 @@ impl Content {
     }
 
     pub fn free(&mut self, block_pos: Vector3<i32>) {
+        
         // 0,0 at node buffer center
         let half = NODE_TEX_SIZE as i32 / 2;
         let pos = block_pos + &Vector3{x: half, y: half, z: half};

src/renderer/mod.rs

@@ -89,8 +89,6 @@ impl Renderer {
         // Other
         let start = std::time::Instant::now();
         let world_offset = Vector3{x:0, y:0, z:0};
-
-        println!("Renderer initialized");
         Self { surface, device, queue, swapchain_desc, swapchain, texture, raytrace_pass, postprocess_pass, ui, buffers, camera, start, world_offset }
     }
 
@@ -118,9 +116,8 @@ impl Renderer {
         
         // Update uniform buffer
         let half = (buffers::nodes::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());
+        let cam_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, cam_offset, self.start.elapsed().as_secs_f32());
         self.queue.write_buffer(&self.buffers.uniforms.buffer, 0, bytemuck::cast_slice(&[self.buffers.uniforms.values]));
 
         // Update content

src/renderer/renderer_view.rs

@@ -1,29 +1,52 @@
 use crate::renderer::UserInterface;
 use crate::renderer::camera::CameraTransform;
 use crate::Renderer;
-use crate::game::world::block::WorldBlock;
+use crate::{game, game::world::{chunk, chunk::WorldChunk, block::WorldBlock}};
 use cgmath::Vector3;
 
 pub trait RendererView {
-    fn write(&mut self, block_pos: &Vector3<i32>, block: &WorldBlock);
+    fn write_chunk(&mut self, chunk_pos: &Vector3<i32>, chunk: &WorldChunk);
     fn shift(&mut self, offset: Vector3<i32>);
     fn get_camera_transform(&mut self) -> &mut dyn CameraTransform;
     fn get_ui(&mut self) -> &mut UserInterface;
     fn get_world_offset(&self) -> Vector3<i32>;
-    fn free(&mut self, block_pos: Vector3<i32>);
+    fn free_chunk(&mut self, chunk_pos: Vector3<i32>);
 }
 
 impl RendererView for Renderer {
     
-    fn write(&mut self, block_pos: &Vector3<i32>, block: &WorldBlock) { 
-        let block_pos = block_pos + (self.world_offset);
-        self.buffers.content.write(&self.queue, &block_pos, block);
+    fn write_chunk(&mut self, chunk_pos: &Vector3<i32>, chunk: &WorldChunk) {
+        // Calculate chunk position in renderer space
+        let chunk_off = self.world_offset / chunk::SIZE as i32;
+        let pos = chunk_pos + chunk_off;
+        // Make sure we are withing current world bounds
+        if pos.x.abs() > game::RENDER_DIST { println!("out of bounds! x: {}", pos.x); return; }
+        if pos.y.abs() > game::RENDER_DIST { println!("out of bounds! y: {}", pos.y); return; }
+        if pos.z.abs() > game::RENDER_DIST { println!("out of bounds! z: {}", pos.z); return; }
+        // Write chunk to renderer
+        println!("write chunk {:?}", pos);
+        let pos = pos * chunk::SIZE as i32;
+        for (block_pos, block) in chunk.all_blocks() {
+            self.buffers.content.write(&self.queue, &(block_pos + pos), block);
+        }
     }
 
-    fn free(&mut self, block_pos: Vector3<i32>) {
-        self.buffers.content.free(block_pos);
+    fn free_chunk(&mut self, chunk_pos: Vector3<i32>) {
+        // Free all blocks within chunk
+        let size = chunk::SIZE as i32;
+        let pos = chunk_pos * size;
+        for x in 0..size {
+            for y in 0..size {
+                for z in 0..size {
+                    self.buffers.content.free(pos + Vector3{x, y, z});
+                }
+            }
+        }
     }
 
+    /*
+    *   offset: By how much to shift the world, in blocks
+    */
     fn shift(&mut self, offset: Vector3<i32>) {
         self.buffers.content.shift(&-offset);
         self.world_offset -= offset;