commit 15446ee884f385a087e3a378f5fbe8be5c3d04a7
Author: Steve Biedermann <hardliner66@gmail.com>
Date:   Thu May 30 00:25:28 2024 +0200

    init

diff --git a/.gitignore b/.gitignore
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+[[package]]
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+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
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+ "windows_i686_msvc 0.52.5",
+ "windows_x86_64_gnu 0.52.5",
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+ "windows_x86_64_msvc 0.52.5",
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..ebe846d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "twflip"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.86"
+clap = { version = "4.5.4", features = ["derive"] }
+ndarray = "0.15.6"
+twmap = "0.12.0"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..d019e90
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,244 @@
+use std::path::PathBuf;
+
+use twmap::{
+    CompressedData, FrontLayer, GameLayer, Layer, Load, PhysicsLayer, QuadsLayer, SpeedupLayer,
+    SwitchLayer, TeleLayer, TilemapLayer, TilesLayer, TuneLayer, TwMap,
+};
+
+use clap::Parser;
+
+#[derive(Parser)]
+struct Args {
+    in_map: PathBuf,
+    out_map: PathBuf,
+}
+
+fn copy_layer<T: PhysicsLayer>(src: &mut TwMap, dst: &mut TwMap) -> Option<()> {
+    let src_layer = src.find_physics_layer_mut::<T>()?.tiles_mut().unwrap_mut();
+    let dst_layer = dst
+        .find_physics_layer_mut::<T>()
+        .unwrap()
+        .tiles_mut()
+        .unwrap_mut();
+
+    let width = src_layer.ncols();
+    let height = src_layer.nrows();
+
+    for x in 0..width {
+        for y in 0..height {
+            dst_layer[[y, width - (1 + x)]] = src_layer[[y, x]];
+        }
+    }
+
+    Some(())
+}
+
+fn main() {
+    let Args { in_map, out_map } = Args::parse();
+    let mut src_map = TwMap::parse_file(&in_map).expect("parsing failed");
+    src_map.load().expect("loading failed");
+    let mut dst_map = TwMap::parse_file(&in_map).expect("parsing failed");
+    dst_map.load().expect("loading failed");
+
+    for g in 0..src_map.groups.len() {
+        for l in 0..src_map.groups[g].layers.len() {
+            match (
+                &mut src_map.groups[g].layers[l],
+                &mut dst_map.groups[g].layers[l],
+            ) {
+                (
+                    Layer::Game(GameLayer {
+                        tiles: ref mut src_tiles,
+                    }),
+                    Layer::Game(GameLayer {
+                        tiles: ref mut dst_tiles,
+                    }),
+                ) => {
+                    src_tiles.load().unwrap();
+                    dst_tiles.load().unwrap();
+                    let CompressedData::Loaded(src_tiles) = &src_tiles else {
+                        unreachable!()
+                    };
+                    let CompressedData::Loaded(ref mut dst_tiles) = dst_tiles else {
+                        unreachable!()
+                    };
+                    let width = src_tiles.ncols();
+                    let height = src_tiles.nrows();
+
+                    for x in 0..width {
+                        for y in 0..height {
+                            dst_tiles[[y, width - (1 + x)]] = src_tiles[[y, x]];
+                        }
+                    }
+                }
+                (
+                    Layer::Tiles(TilesLayer {
+                        tiles: ref mut src_tiles,
+                        ..
+                    }),
+                    Layer::Tiles(TilesLayer {
+                        tiles: ref mut dst_tiles,
+                        ..
+                    }),
+                ) => {
+                    src_tiles.load().unwrap();
+                    dst_tiles.load().unwrap();
+                    let CompressedData::Loaded(src_tiles) = &src_tiles else {
+                        unreachable!()
+                    };
+                    let CompressedData::Loaded(ref mut dst_tiles) = dst_tiles else {
+                        unreachable!()
+                    };
+                    let width = src_tiles.ncols();
+                    let height = src_tiles.nrows();
+
+                    for x in 0..width {
+                        for y in 0..height {
+                            dst_tiles[[y, width - (1 + x)]] = src_tiles[[y, x]];
+                        }
+                    }
+                }
+                (
+                    Layer::Tele(TeleLayer {
+                        tiles: ref mut src_tiles,
+                        ..
+                    }),
+                    Layer::Tele(TeleLayer {
+                        tiles: ref mut dst_tiles,
+                        ..
+                    }),
+                ) => {
+                    src_tiles.load().unwrap();
+                    dst_tiles.load().unwrap();
+                    let CompressedData::Loaded(src_tiles) = &src_tiles else {
+                        unreachable!()
+                    };
+                    let CompressedData::Loaded(ref mut dst_tiles) = dst_tiles else {
+                        unreachable!()
+                    };
+                    let width = src_tiles.ncols();
+                    let height = src_tiles.nrows();
+
+                    for x in 0..width {
+                        for y in 0..height {
+                            dst_tiles[[y, width - (1 + x)]] = src_tiles[[y, x]];
+                        }
+                    }
+                }
+                (
+                    Layer::Front(FrontLayer {
+                        tiles: ref mut src_tiles,
+                        ..
+                    }),
+                    Layer::Front(FrontLayer {
+                        tiles: ref mut dst_tiles,
+                        ..
+                    }),
+                ) => {
+                    src_tiles.load().unwrap();
+                    dst_tiles.load().unwrap();
+                    let CompressedData::Loaded(src_tiles) = &src_tiles else {
+                        unreachable!()
+                    };
+                    let CompressedData::Loaded(ref mut dst_tiles) = dst_tiles else {
+                        unreachable!()
+                    };
+                    let width = src_tiles.ncols();
+                    let height = src_tiles.nrows();
+
+                    for x in 0..width {
+                        for y in 0..height {
+                            dst_tiles[[y, width - (1 + x)]] = src_tiles[[y, x]];
+                        }
+                    }
+                }
+                (
+                    Layer::Speedup(SpeedupLayer {
+                        tiles: ref mut src_tiles,
+                        ..
+                    }),
+                    Layer::Speedup(SpeedupLayer {
+                        tiles: ref mut dst_tiles,
+                        ..
+                    }),
+                ) => {
+                    src_tiles.load().unwrap();
+                    dst_tiles.load().unwrap();
+                    let CompressedData::Loaded(src_tiles) = &src_tiles else {
+                        unreachable!()
+                    };
+                    let CompressedData::Loaded(ref mut dst_tiles) = dst_tiles else {
+                        unreachable!()
+                    };
+                    let width = src_tiles.ncols();
+                    let height = src_tiles.nrows();
+
+                    for x in 0..width {
+                        for y in 0..height {
+                            dst_tiles[[y, width - (1 + x)]] = src_tiles[[y, x]];
+                        }
+                    }
+                }
+                (
+                    Layer::Switch(SwitchLayer {
+                        tiles: ref mut src_tiles,
+                        ..
+                    }),
+                    Layer::Switch(SwitchLayer {
+                        tiles: ref mut dst_tiles,
+                        ..
+                    }),
+                ) => {
+                    src_tiles.load().unwrap();
+                    dst_tiles.load().unwrap();
+                    let CompressedData::Loaded(src_tiles) = &src_tiles else {
+                        unreachable!()
+                    };
+                    let CompressedData::Loaded(ref mut dst_tiles) = dst_tiles else {
+                        unreachable!()
+                    };
+                    let width = src_tiles.ncols();
+                    let height = src_tiles.nrows();
+
+                    for x in 0..width {
+                        for y in 0..height {
+                            dst_tiles[[y, width - (1 + x)]] = src_tiles[[y, x]];
+                        }
+                    }
+                }
+                (
+                    Layer::Tune(TuneLayer {
+                        tiles: ref mut src_tiles,
+                        ..
+                    }),
+                    Layer::Tune(TuneLayer {
+                        tiles: ref mut dst_tiles,
+                        ..
+                    }),
+                ) => {
+                    src_tiles.load().unwrap();
+                    dst_tiles.load().unwrap();
+                    let CompressedData::Loaded(src_tiles) = &src_tiles else {
+                        unreachable!()
+                    };
+                    let CompressedData::Loaded(ref mut dst_tiles) = dst_tiles else {
+                        unreachable!()
+                    };
+                    let width = src_tiles.ncols();
+                    let height = src_tiles.nrows();
+
+                    for x in 0..width {
+                        for y in 0..height {
+                            dst_tiles[[y, width - (1 + x)]] = src_tiles[[y, x]];
+                        }
+                    }
+                }
+                _ => (),
+            }
+        }
+    }
+
+    // save map
+    println!("exporting map to {:?}", &out_map);
+    dst_map.save_file(out_map).expect("saving failed");
+}