1 files changed, 87 insertions, 0 deletions
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..92d07b7
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,87 @@
+pub mod render;
+
+use crate::render::{
+    composite::{
+        image_buffer_blit, isometric_coord_mapping, CHUNK_HEIGHT, CHUNK_SIZE, REGION_SIZE,
+    },
+    models::processed_block_texture,
+    processing::Texture,
+};
+use fastanvil::{tex::Render, Block, Chunk, CurrentJavaChunk, RegionLoader};
+use image::{ImageBuffer, Rgba};
+use log::debug;
+use std::{collections::HashMap, path::Path};
+
+fn main() {
+    env_logger::builder()
+        .filter_level(log::LevelFilter::Debug)
+        .parse_env("LOG")
+        .build();
+
+    let loader = fastanvil::RegionFileLoader::new(
+        Path::new("/home/muffin/containers/games/home/user/server/world/region/").to_path_buf(),
+    );
+
+    let mut region = loader
+        .region(fastanvil::RCoord(0), fastanvil::RCoord(0))
+        .unwrap();
+
+    let chunk = region.read_chunk(0, 0).unwrap().unwrap();
+
+    let chunk: CurrentJavaChunk = fastnbt::from_bytes(&chunk).unwrap();
+
+    let mut visible_blocks = Vec::new();
+
+    for x in 0..16 {
+        for y in -64..256 {
+            for z in 0..16 {
+                let solid = |x: isize, y: isize, z: isize| {
+                    if x >= 0 && z >= 0 && x < 16 && z < 16 && y >= -64 && y < 256 {
+                        chunk
+                            .block(x as usize, y, z as usize)
+                            .map(|b| b.name() != "minecraft:air")
+                            .unwrap_or(false)
+                    } else {
+                        false
+                    }
+                };
+                let visible = solid(x, y, z)
+                    && !(solid(x + 1, y, z)
+                        && solid(x - 1, y, z)
+                        && solid(x, y + 1, z)
+                        && solid(x, y - 1, z)
+                        && solid(x, y, z + 1)
+                        && solid(x, y, z - 1));
+
+                if visible {
+                    visible_blocks.push((x, y, z))
+                }
+            }
+        }
+    }
+
+    debug!("{} potentially visible blocks", visible_blocks.len());
+    debug!("sorting by z-order");
+    visible_blocks.sort_by_cached_key(|(x, y, z)| x + y + z);
+    debug!("done");
+
+    let mut view: Texture = ImageBuffer::new(
+        16 * CHUNK_SIZE as u32,
+        16 * (CHUNK_SIZE as u32 + CHUNK_HEIGHT as u32) / 2,
+    );
+
+    let mut textures = HashMap::<String, Texture>::new();
+
+    for (x, y, z) in visible_blocks {
+        let coords = isometric_coord_mapping(x as i32, y as i32, z as i32);
+        let name = &chunk.block(x as usize, y, z as usize).unwrap().name()["minecraft:".len()..];
+        let texture = textures
+            .entry(name.to_owned())
+            .or_insert_with(|| processed_block_texture(name));
+
+        println!("{coords:?}");
+        image_buffer_blit(&mut view, texture, coords);
+    }
+
+    view.save(format!("/tmp/a.png")).unwrap();
+}