Changed project name (placeholder), some renames

src/game/world/mod.rs

@@ -0,0 +1,138 @@
+mod generator;
+pub mod chunk;
+pub mod block;
+use std::time::Instant;
+use linked_hash_map::LinkedHashMap;
+use std::path::PathBuf;
+use std::path::Path;
+use std::io::Write;
+use std::io::Read;
+use std::fs;
+use cgmath::{Point3, InnerSpace};
+use std::collections::HashMap;
+use generator::WorldGen;
+use chunk::WorldChunk;
+use block::WorldBlock;
+use yaml_rust::{Yaml, YamlLoader, YamlEmitter};
+
+
+pub struct World {
+    name: String,
+    chunks: HashMap<Point3<u32>, WorldChunk>,
+}
+
+impl World {
+
+    pub fn new(name: String) -> Self {
+        Self { 
+            name, 
+            chunks: HashMap::new(),
+        }
+    }
+
+    pub fn all_blocks(&self) -> Vec<(Point3<u32>, &WorldBlock)> {
+        self.chunks.iter().map(|(chunk_pos, chunk)| {
+            let off = chunk_pos * chunk::SIZE as u32;
+            let result: Vec<(Point3<u32>, &WorldBlock)> = chunk.all_blocks().iter().map(|(pos, block)| {
+                (
+                    Point3{x: off.x+pos.x, y: off.y+pos.y, z: off.z+pos.z},
+                    *block
+                )
+            }).collect();
+            result
+        }).flatten().collect()
+    }
+
+    pub fn save(&self) {
+        // Get directory
+        let mut dir = dirs::data_local_dir().unwrap();
+        dir.push("Voxelgame");
+        fs::create_dir_all(&dir).expect("Failed to create directory");
+
+        // Save all chunks
+        for (pos, chunk) in self.chunks.iter() {
+            let bytes = chunk.to_bytes();
+            let filename = format!("chunk_{}_{}_{}.dat", pos.x, pos.y, pos.z);
+            let path: PathBuf = [dir.to_str().unwrap(), &filename].iter().collect();
+            
+            let mut file = fs::File::create(path).expect("Failed to create file");
+            file.write(&bytes).unwrap();
+        }
+
+        // Save metadata
+        let mut data: LinkedHashMap<Yaml, Yaml> = LinkedHashMap::new();
+        data.insert(Yaml::String("name".to_string()), Yaml::String(self.name.clone()));
+        
+        let mut data_str = String::new();
+        let mut emit = YamlEmitter::new(&mut data_str);
+        emit.dump(&Yaml::Hash(data)).expect("Failed to encode yaml");
+
+        let data_path: PathBuf = [dir.to_str().unwrap(), "world.yml"].iter().collect();
+        let mut data_file = fs::File::create(data_path).unwrap();
+        data_file.write_all(data_str.as_bytes()).expect("Failed to write");
+    }
+
+    pub fn load(&mut self) {
+        // Get directory
+        let mut dir = dirs::data_local_dir().unwrap();
+        dir.push("Voxelgame");
+        if !dir.is_dir() {
+            println!("Not exists: {:?}", dir);
+            return; 
+        }
+
+        // Load all chunks
+        for entry in fs::read_dir(dir).unwrap() {
+            let path: PathBuf = entry.unwrap().path();
+            if path.extension().unwrap().to_str() != Some("dat") {
+                continue;
+            }
+            let stem = path.file_stem().unwrap().to_str().unwrap();
+            if !stem.starts_with("chunk") {
+                continue;
+            }
+
+            let s: Vec<&str> = stem.split("_").collect();
+            let pos = Point3{x: s[1].parse::<u32>().unwrap(), y: s[2].parse::<u32>().unwrap(), z: s[3].parse::<u32>().unwrap()};
+
+            let mut bytes = Vec::new();
+            let mut file = fs::File::open(path).expect("Failed to open file");
+            file.read_to_end(&mut bytes).expect("Failed to read file");
+            let chunk = WorldChunk::from_bytes(bytes);
+
+            println!("loaded {:?}", pos);
+            self.chunks.insert(pos, chunk);
+        }
+
+        // Load metadata
+
+    }
+
+    pub fn gen_block(&mut self, block_wpos: &Point3<u32>) -> &WorldBlock {
+        // Split world space to chunk and block space
+        let ch_pos = block_wpos / chunk::SIZE as u32;
+        let bl_pos = block_wpos % chunk::SIZE as u32;
+        // Create chunk if does not exist
+        if let None = self.chunks.get(&ch_pos) {
+            self.chunks.insert(ch_pos.clone(), WorldChunk::new());
+            println!("Alloc chunk [{}, {}, {}]", ch_pos.x, ch_pos.y, ch_pos.z);
+        }
+        // Generate block for chunk
+        let chunk = self.chunks.get_mut(&ch_pos).unwrap();
+        let block = chunk.get_block(&bl_pos);
+        WorldGen::generate(&block_wpos, block);
+        block
+    }
+
+    #[allow(unused)]
+    pub fn get_block(&mut self, block_wpos: &Point3<u32>) -> Option<&WorldBlock> {
+        // Split world space to chunk and block space
+        let ch_pos = block_wpos / chunk::SIZE as u32;
+        let bl_pos = block_wpos % chunk::SIZE as u32;
+        // Return block if exists
+        if let Some(chunk) = self.chunks.get_mut(&ch_pos) {
+            return Some(chunk.get_block(&bl_pos));
+        }
+        None
+    }
+}