3 files changed, 60 insertions, 13 deletions
diff --git a/src/dimension.rs b/src/dimension.rs
index 39a7fff..6c3bea8 100644
--- a/src/dimension.rs
+++ b/src/dimension.rs
@@ -1,6 +1,6 @@
 use chashmap::{CHashMap, ReadGuard, WriteGuard};
 use fastanvil::{Block, Chunk, CurrentJavaChunk, Region, RegionFileLoader, RegionLoader};
-use log::{info, debug};
+use log::{debug, info};
 use std::{fs::File, path::Path};
 
 pub struct Dimension {
@@ -8,6 +8,7 @@ pub struct Dimension {
     regions: CHashMap<(isize, isize), Option<Region<File>>>,
     chunks: CHashMap<(isize, isize), Option<CurrentJavaChunk>>,
 }
+
 impl Dimension {
     pub fn new(path: &str) -> Self {
         let loader = fastanvil::RegionFileLoader::new(Path::new(path).to_path_buf());
@@ -17,6 +18,7 @@ impl Dimension {
             chunks: Default::default(),
         }
     }
+
     pub fn region(
         &self,
         rx: isize,
@@ -34,6 +36,7 @@ impl Dimension {
             self.region(rx, rz)
         }
     }
+    
     pub fn chunk(
         &self,
         cx: isize,
@@ -55,10 +58,11 @@ impl Dimension {
             self.chunk(cx, cz)
         }
     }
+    
     pub fn block(&self, x: isize, y: isize, z: isize) -> Option<Block> {
         self.chunk(x / 16, z / 16)
             .as_ref()?
-            .block(x.rem_euclid(16) as usize, y, z.rem_euclid(16) as usize)
+            .block((x % 16).abs() as usize, y, (z % 16).abs() as usize)
             .map(|e| e.to_owned())
     }
 }
diff --git a/src/main.rs b/src/main.rs
index 9757748..ce1906e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,28 @@
 pub mod dimension;
 pub mod render;
+pub mod viewer;
 
-use crate::dimension::Dimension;
-use log::info;
-use render::Renderer;
+use clap::{Parser, Subcommand};
+use std::{net::SocketAddr, path::PathBuf};
+use viewer::serve_http;
+
+#[derive(Parser)]
+struct Args {
+    /// Dimension directory containing .mca files
+    #[clap(long, short, default_value = "./world/region")]
+    dimension: PathBuf,
+
+    #[clap(subcommand)]
+    action: Action,
+}
+#[derive(Subcommand)]
+enum Action {
+    /// Run a http server providing an interactive map viewer.
+    Serve {
+        #[arg(long, short, default_value = "127.0.0.1:8080")]
+        bind: SocketAddr,
+    },
+}
 
 fn main() {
     env_logger::builder()
@@ -11,13 +30,9 @@ fn main() {
         .parse_env("LOG")
         .init();
 
-    let dim = Dimension::new("/home/muffin/containers/games/home/user/server/world/region/");
-    let renderer = Renderer::new(dim);
-    for sx in 0..2 {
-        for sy in 0..2 {
-            let view = renderer.render_segment(sx, sy);
-            info!("saving png");
-            view.save(format!("/tmp/seg.{sx}.{sy}.png")).unwrap();
-        }
+    let args = Args::parse();
+
+    match args.action {
+        Action::Serve { bind } => serve_http(bind),
     }
 }
diff --git a/src/viewer/mod.rs b/src/viewer/mod.rs
new file mode 100644
index 0000000..6ea540b
--- /dev/null
+++ b/src/viewer/mod.rs
@@ -0,0 +1,28 @@
+use std::net::SocketAddr;
+
+use warp::Filter;
+
+pub fn serve_http(bind: SocketAddr) {
+    tokio::runtime::Builder::new_multi_thread()
+        .enable_all()
+        .build()
+        .unwrap()
+        .block_on(async move {
+            let tiles = warp::path!("tiles" / isize / isize / isize)
+                .map(|z, x, y| format!("blub {:?}", (x, y, z)));
+
+            // let dim =
+            //     Dimension::new("/home/muffin/containers/games/home/user/server/world/region/");
+            // let renderer = Renderer::new(dim);
+            // for sx in 0..2 {
+            //     for sy in 0..2 {
+            //         let view = renderer.render_segment(sx, sy);
+            //         info!("saving png");
+            //         view.save(format!("/tmp/seg.{sx}.{sy}.png")).unwrap();
+            //     }
+            // }
+            let router = tiles;
+
+            warp::serve(router).run(bind).await;
+        })
+}