initial mistake

11 files changed, 926 insertions, 0 deletions

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3116522
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,7 @@
+dotenv
+
+if ! has nix_direnv_version || ! nix_direnv_version 3.0.4; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/3.0.4/direnvrc" "sha256-DzlYZ33mWF/Gs8DDeyjr8mnVmQGx7ASYqA5WlxwvBG4="
+fi
+
+use flake
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c706ca6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+# direnv
+.direnv
+
+# Zig
+zig-cache
+zig-out
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2574b2a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# tmz
+
+A library for loading Tiled Maps and Tilesets
diff --git a/build.zig b/build.zig
new file mode 100644
index 0000000..a3b1b10
--- /dev/null
+++ b/build.zig
@@ -0,0 +1,95 @@
+const std = @import("std");
+
+// Although this function looks imperative, note that its job is to
+// declaratively construct a build graph that will be executed by an external
+// runner.
+pub fn build(b: *std.Build) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard optimization options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
+    // set a preferred release mode, allowing the user to decide how to optimize.
+    const optimize = b.standardOptimizeOption(.{});
+
+    // const tmz_module = b.createModule(.{ .root_source_file = .{ .path = "src/tmz.zig" } });
+
+    const lib = b.addStaticLibrary(.{
+        .name = "tmz",
+        // In this case the main source file is merely a path, however, in more
+        // complicated build scripts, this could be a generated file.
+        .root_source_file = .{ .path = "src/tmz.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // This declares intent for the library to be installed into the standard
+    // location when the user invokes the "install" step (the default step when
+    // running `zig build`).
+    b.installArtifact(lib);
+
+    const game = b.addExecutable(.{
+        .name = "tmz",
+        .root_source_file = .{ .path = "examples/game.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    game.root_module.addImport("tmz", &lib.root_module);
+
+    // This declares intent for the executable to be installed into the
+    // standard location when the user invokes the "install" step (the default
+    // step when running `zig build`).
+    b.installArtifact(game);
+
+    // This *creates* a Run step in the build graph, to be executed when another
+    // step is evaluated that depends on it. The next line below will establish
+    // such a dependency.
+    const run_cmd = b.addRunArtifact(game);
+
+    // By making the run step depend on the install step, it will be run from the
+    // installation directory rather than directly from within the cache directory.
+    // This is not necessary, however, if the application depends on other installed
+    // files, this ensures they will be present and in the expected location.
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    // This allows the user to pass arguments to the application in the build
+    // command itself, like this: `zig build run -- arg1 arg2 etc`
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    // This creates a build step. It will be visible in the `zig build --help` menu,
+    // and can be selected like this: `zig build run`
+    // This will evaluate the `run` step rather than the default, which is "install".
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    // Creates a step for unit testing. This only builds the test executable
+    // but does not run it.
+    const lib_unit_tests = b.addTest(.{
+        .root_source_file = .{ .path = "src/tmz.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const run_lib_unit_tests = b.addRunArtifact(lib_unit_tests);
+
+    const game_unit_tests = b.addTest(.{
+        .root_source_file = .{ .path = "examples/game.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const run_game_unit_tests = b.addRunArtifact(game_unit_tests);
+
+    // Similar to creating the run step earlier, this exposes a `test` step to
+    // the `zig build --help` menu, providing a way for the user to request
+    // running the unit tests.
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&run_lib_unit_tests.step);
+    test_step.dependOn(&run_game_unit_tests.step);
+}
diff --git a/build.zig.zon b/build.zig.zon
new file mode 100644
index 0000000..4638b33
--- /dev/null
+++ b/build.zig.zon
@@ -0,0 +1,61 @@
+.{
+    .name = "tmz",
+    // This is a [Semantic Version](https://semver.org/).
+    // In a future version of Zig it will be used for package deduplication.
+    .version = "0.1.0",
+
+    // This field is optional.
+    // This is currently advisory only; Zig does not yet do anything
+    // with this value.
+    .minimum_zig_version = "0.12.0",
+
+    // This field is optional.
+    // Each dependency must either provide a `url` and `hash`, or a `path`.
+    // `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
+    // Once all dependencies are fetched, `zig build` no longer requires
+    // internet connectivity.
+    .dependencies = .{
+        // See `zig fetch --save <url>` for a command-line interface for adding dependencies.
+        //.example = .{
+        //    // When updating this field to a new URL, be sure to delete the corresponding
+        //    // `hash`, otherwise you are communicating that you expect to find the old hash at
+        //    // the new URL.
+        //    .url = "https://example.com/foo.tar.gz",
+        //
+        //    // This is computed from the file contents of the directory of files that is
+        //    // obtained after fetching `url` and applying the inclusion rules given by
+        //    // `paths`.
+        //    //
+        //    // This field is the source of truth; packages do not come from a `url`; they
+        //    // come from a `hash`. `url` is just one of many possible mirrors for how to
+        //    // obtain a package matching this `hash`.
+        //    //
+        //    // Uses the [multihash](https://multiformats.io/multihash/) format.
+        //    .hash = "...",
+        //
+        //    // When this is provided, the package is found in a directory relative to the
+        //    // build root. In this case the package's hash is irrelevant and therefore not
+        //    // computed. This field and `url` are mutually exclusive.
+        //    .path = "foo",
+
+        //    // When this is set to `true`, a package is declared to be lazily
+        //    // fetched. This makes the dependency only get fetched if it is
+        //    // actually used.
+        //    .lazy = false,
+        //},
+    },
+
+    // Specifies the set of files and directories that are included in this package.
+    // Only files and directories listed here are included in the `hash` that
+    // is computed for this package.
+    // Paths are relative to the build root. Use the empty string (`""`) to refer to
+    // the build root itself.
+    // A directory listed here means that all files within, recursively, are included.
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+        //"LICENSE",
+        //"README.md",
+    },
+}
diff --git a/examples/game.zig b/examples/game.zig
new file mode 100644
index 0000000..e86eede
--- /dev/null
+++ b/examples/game.zig
@@ -0,0 +1,24 @@
+const std = @import("std");
+const tmz = @import("tmz");
+
+pub fn main() !void {
+    var buffer: [10_000]u8 = undefined;
+    const file = try std.fs.cwd().readFile("examples/map.tmj", &buffer);
+
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    const allocator = gpa.allocator();
+    defer _ = gpa.deinit();
+
+    var arena = std.heap.ArenaAllocator.init(allocator);
+    defer arena.deinit();
+
+    const map = try tmz.parse(file, arena.allocator());
+
+    const stdout_file = std.io.getStdOut().writer();
+    var bw = std.io.bufferedWriter(stdout_file);
+    const stdout = bw.writer();
+
+    try stdout.print("Map: {any}\n", .{map});
+
+    try bw.flush(); // don't forget to flush!
+}
diff --git a/examples/map.tmj b/examples/map.tmj
new file mode 100644
index 0000000..ddfa9f3
--- /dev/null
+++ b/examples/map.tmj
@@ -0,0 +1,66 @@
+{
+  "compressionlevel": -1,
+  "height": 30,
+  "class": "bar",
+  "infinite": false,
+  "layers": [
+    {
+      "class": "bar",
+      "data": [1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 19, 15, 19, 15, 19, 15, 19, 15, 19, 15,
+                3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 14, 15, 15, 15, 14, 15, 15, 15, 14,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 14, 15, 19, 15, 19, 15, 19, 15, 19, 15,
+                3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 14, 15, 14, 15, 15, 15, 15, 15, 14,
+                4, 4, 4, 4, 4, 4, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 3, 3, 14, 14, 14, 15, 19, 15, 19, 15, 19, 15,
+                5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 3, 14, 14, 15, 14, 15, 14, 15, 14, 15, 14,
+                6, 6, 6, 6, 6, 6, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 16, 16, 16, 16, 14, 15, 19, 15, 19, 15, 19, 15,
+                6, 6, 6, 6, 6, 6, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 16, 16, 16, 16, 15, 14, 15, 15, 15, 14, 15, 14,
+                6, 6, 6, 6, 6, 6, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 3, 3, 16, 16, 16, 16, 14, 14, 19, 15, 19, 15, 19, 15,
+                7, 7, 7, 7, 7, 7, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 13, 13, 13, 13, 8, 9, 8, 14, 15, 14, 15, 14,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 8, 19, 15, 19, 15,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 8, 14, 15, 14,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2147483659, 10, 17, 15, 19, 15,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 1073741835, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3221225483, 10, 8, 14, 15, 14,
+                4, 4, 4, 4, 4, 4, 10, 10, 10, 10, 1073741835, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3221225483, 10, 10, 17, 15, 19, 15,
+                5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10, 1073741835, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3221225483, 10, 10, 17, 15, 15, 15, 14,
+                6, 6, 6, 6, 6, 6, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 15, 19, 15, 19, 15,
+                6, 6, 6, 6, 6, 6, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 15, 15, 14, 15, 14,
+                6, 6, 6, 6, 6, 6, 1, 3, 1, 3, 1, 3, 1, 2, 1, 2, 1, 3, 1, 3, 1, 2, 1, 3, 1, 3, 1, 2, 19, 15, 19, 15,
+                7, 7, 7, 7, 7, 7, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 15, 14, 15, 14,
+                1, 2, 1, 3, 1, 3, 1, 3, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 2, 19, 15,
+                1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 15, 14,
+                1, 3, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 19, 15,
+                3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 14,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
+                1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
+                3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2,
+                3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1],
+      "height": 30,
+      "id": 1,
+      "name": "Tile Layer 1",
+      "opacity": 1,
+      "type": "tilelayer",
+      "visible": true,
+      "width": 32,
+      "x": 0,
+      "y": 0
+    }
+  ],
+  "nextlayerid": 2,
+  "nextobjectid": 1,
+  "orientation": "orthogonal",
+  "renderorder": "right-down",
+  "tiledversion": "1.10.0",
+  "tileheight": 8,
+  "tilesets": [
+    {
+      "firstgid": 1,
+      "source": "tiles.tsj"
+    }
+  ],
+  "tilewidth": 8,
+  "type": "map",
+  "version": "1.10",
+  "width": 32
+}
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..9697d8d
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,168 @@
+{
+  "nodes": {
+    "devshell": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1713532798,
+        "narHash": "sha256-wtBhsdMJA3Wa32Wtm1eeo84GejtI43pMrFrmwLXrsEc=",
+        "owner": "numtide",
+        "repo": "devshell",
+        "rev": "12e914740a25ea1891ec619bb53cf5e6ca922e40",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "devshell",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1712014858,
+        "narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1704161960,
+        "narHash": "sha256-QGua89Pmq+FBAro8NriTuoO/wNaUtugt29/qqA8zeeM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "63143ac2c9186be6d9da6035fa22620018c85932",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1711703276,
+        "narHash": "sha256-iMUFArF0WCatKK6RzfUJknjem0H9m4KgorO/p3Dopkk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d8fe5e6c92d0d190646fb9f1056741a229980089",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1713714899,
+        "narHash": "sha256-+z/XjO3QJs5rLE5UOf015gdVauVRQd2vZtsFkaXBq2Y=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "6143fc5eeb9c4f00163267708e26191d1e918932",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1708475490,
+        "narHash": "sha256-g1v0TsWBQPX97ziznfJdWhgMyMGtoBFs102xSYO4syU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "0e74ca98a74bc7270d28838369593635a5db3260",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devshell": "devshell",
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs_2",
+        "treefmt-nix": "treefmt-nix"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_3"
+      },
+      "locked": {
+        "lastModified": 1711963903,
+        "narHash": "sha256-N3QDhoaX+paWXHbEXZapqd1r95mdshxToGowtjtYkGI=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "49dc4a92b02b8e68798abd99184f228243b6e3ac",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..53dec5f
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,53 @@
+{
+  description = "tmz - a library for loading Tiled Maps and Tilesets";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    flake-parts.url = "github:hercules-ci/flake-parts";
+
+    devshell.url = "github:numtide/devshell";
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+  };
+
+  outputs = inputs @ {flake-parts, ...}:
+    flake-parts.lib.mkFlake {inherit inputs;} {
+      imports = [
+        inputs.devshell.flakeModule
+        inputs.treefmt-nix.flakeModule
+      ];
+      systems = ["x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin"];
+      perSystem = {
+        config,
+        self',
+        inputs',
+        pkgs,
+        system,
+        ...
+      }: {
+        treefmt.config = {
+          projectRootFile = "flake.nix";
+
+          flakeCheck = true;
+          flakeFormatter = true;
+
+          programs.zig.enable = true;
+          programs.alejandra.enable = true;
+        };
+
+        devshells.default = {
+          commands = [
+            {
+              name = "fmt";
+              help = "format the repo";
+              command = "nix fmt";
+            }
+          ];
+
+          packages = [
+            pkgs.zig_0_12
+          ];
+        };
+      };
+    };
+}
diff --git a/src/test/map.tmj b/src/test/map.tmj
new file mode 100644
index 0000000..ddfa9f3
--- /dev/null
+++ b/src/test/map.tmj
@@ -0,0 +1,66 @@
+{
+  "compressionlevel": -1,
+  "height": 30,
+  "class": "bar",
+  "infinite": false,
+  "layers": [
+    {
+      "class": "bar",
+      "data": [1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 19, 15, 19, 15, 19, 15, 19, 15, 19, 15,
+                3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 14, 15, 15, 15, 14, 15, 15, 15, 14,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 14, 15, 19, 15, 19, 15, 19, 15, 19, 15,
+                3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 14, 15, 14, 15, 15, 15, 15, 15, 14,
+                4, 4, 4, 4, 4, 4, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 3, 3, 14, 14, 14, 15, 19, 15, 19, 15, 19, 15,
+                5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 3, 14, 14, 15, 14, 15, 14, 15, 14, 15, 14,
+                6, 6, 6, 6, 6, 6, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 16, 16, 16, 16, 14, 15, 19, 15, 19, 15, 19, 15,
+                6, 6, 6, 6, 6, 6, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 16, 16, 16, 16, 15, 14, 15, 15, 15, 14, 15, 14,
+                6, 6, 6, 6, 6, 6, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 3, 3, 16, 16, 16, 16, 14, 14, 19, 15, 19, 15, 19, 15,
+                7, 7, 7, 7, 7, 7, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 13, 13, 13, 13, 8, 9, 8, 14, 15, 14, 15, 14,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 8, 19, 15, 19, 15,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 8, 14, 15, 14,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2147483659, 10, 17, 15, 19, 15,
+                10, 10, 10, 10, 10, 10, 10, 10, 10, 1073741835, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3221225483, 10, 8, 14, 15, 14,
+                4, 4, 4, 4, 4, 4, 10, 10, 10, 10, 1073741835, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3221225483, 10, 10, 17, 15, 19, 15,
+                5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10, 1073741835, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3221225483, 10, 10, 17, 15, 15, 15, 14,
+                6, 6, 6, 6, 6, 6, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 18, 17, 15, 19, 15, 19, 15,
+                6, 6, 6, 6, 6, 6, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 15, 15, 14, 15, 14,
+                6, 6, 6, 6, 6, 6, 1, 3, 1, 3, 1, 3, 1, 2, 1, 2, 1, 3, 1, 3, 1, 2, 1, 3, 1, 3, 1, 2, 19, 15, 19, 15,
+                7, 7, 7, 7, 7, 7, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 15, 14, 15, 14,
+                1, 2, 1, 3, 1, 3, 1, 3, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 2, 19, 15,
+                1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 15, 14,
+                1, 3, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 19, 15,
+                3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 15, 14,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
+                1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2,
+                3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1,
+                1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2,
+                3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1],
+      "height": 30,
+      "id": 1,
+      "name": "Tile Layer 1",
+      "opacity": 1,
+      "type": "tilelayer",
+      "visible": true,
+      "width": 32,
+      "x": 0,
+      "y": 0
+    }
+  ],
+  "nextlayerid": 2,
+  "nextobjectid": 1,
+  "orientation": "orthogonal",
+  "renderorder": "right-down",
+  "tiledversion": "1.10.0",
+  "tileheight": 8,
+  "tilesets": [
+    {
+      "firstgid": 1,
+      "source": "tiles.tsj"
+    }
+  ],
+  "tilewidth": 8,
+  "type": "map",
+  "version": "1.10",
+  "width": 32
+}
diff --git a/src/tmz.zig b/src/tmz.zig
new file mode 100644
index 0000000..ac16d75
--- /dev/null
+++ b/src/tmz.zig
@@ -0,0 +1,377 @@
+const std = @import("std");
+
+pub const flipped_horizontally: u32 = 0x80000000;
+pub const flipped_vertically: u32 = 0x40000000;
+pub const flipped_diagonally: u32 = 0x20000000;
+pub const rotated_hexagonal_120: u32 = 0x10000000;
+
+/// [https://doc.mapeditor.org/en/stable/reference/json-map-format/#map]
+pub const Map = struct {
+    backgroundcolor: ?[]const u8 = null,
+    class: ?[]const u8 = null,
+    compressionlevel: i32 = -1,
+    height: u32,
+    hexsidelength: ?u32 = null,
+    infinite: bool,
+    layers: []Layer,
+    nextlayerid: u32,
+    nextobjectid: u32,
+    orientation: Orientation,
+    parallaxoriginx: f32 = 0,
+    parallaxoriginy: f32 = 0,
+    properties: ?[]const Property = null,
+    renderorder: RenderOrder,
+    staggeraxis: ?StaggerAxis = null,
+    staggerindex: ?StaggerIndex = null,
+    tiledversion: []const u8,
+    tileheight: u32,
+    tilesets: []Tileset,
+    tilewidth: u32,
+    type: Type,
+    version: []const u8,
+    width: u32,
+
+    pub fn globalTileId(self: @This(), index: u32) !Gid {
+        const is_flipped_horizontally = (index & flipped_horizontally > 0);
+        const is_flipped_vertically = (index & flipped_vertically > 0);
+        const is_flipped_diagonally = (index & flipped_diagonally > 0);
+        const is_rotated = (index & rotated_hexagonal_120 > 0);
+
+        // clear flags
+        const gtid = index & ~flipped_horizontally | flipped_vertically | flipped_diagonally | rotated_hexagonal_120;
+
+        for (self.tilesets) |tileset| {
+            if (tileset.firstgid <= gtid) {
+                return .{ .gid = gtid - tileset.firstgid, .flipped_horizontally = is_flipped_horizontally, .flipped_vertically = is_flipped_vertically, .flipped_diagonally = is_flipped_diagonally, .rotated = is_rotated };
+            }
+        }
+        return error.GidNotFound;
+    }
+
+    pub const Gid = struct {
+        gid: u32,
+        flipped_horizontally: bool,
+        flipped_vertically: bool,
+        flipped_diagonally: bool,
+        rotated: bool,
+    };
+
+    pub const Orientation = enum { orthogonal, isometric, staggered, hexagonal };
+    pub const RenderOrder = enum { @"right-down", @"right-up", @"left-down", @"left-up" };
+    pub const StaggerAxis = enum { x, y };
+    pub const StaggerIndex = enum { odd, even };
+    pub const Type = enum { map };
+};
+
+inline fn get(source: std.json.Value, name: []const u8) ?[]const u8 {
+    if (source.object.get(name)) |o| {
+        return o.string;
+    }
+    return null;
+}
+
+// pub const DataEncoding = union(enum) {
+//     csv: ?[]const u32,
+//     base64: ?[]const u8,
+
+//     pub fn jsonParse(allocator: Allocator, source: std.json.Value, options: std.json.ParseOptions) !@This() {
+//         _ = source;
+//         _ = options;
+//         _ = allocator;
+//         // if (source == .string) {
+//         //     // const beep = source.string;
+//         //     // return .{ .base64 = beep };
+//         //     return @This(){ .base64 = "hi" };
+//         // } else if (source == .array) {
+//         //     // return .{ .csv = &[_]u32{ 2, 3 } };
+//         //     // return .{ .base64 = "fff" };
+//         //     return error.UnexpectedToken;
+//         // } else {
+//         //     return error.UnexpectedToken;
+//         // }
+//         return .{ .base64 = "foo" };
+//     }
+// };
+
+pub const Layer = struct {
+    // chunks: ?[]const ChunkEncoding = null,
+    class: ?[]const u8 = null,
+    compression: ?enum { zlib, gzip, zstd } = null,
+    data: ?[]const u32 = null,
+    draworder: ?enum { topdown, index } = .topdown,
+    encoding: ?Encoding = .csv,
+    // height: ?u32 = null,
+    // id: u32,
+    // image: ?[]const u8 = null,
+    // layers: ?[]Layer = null,
+    // locked: bool = false,
+    // name: []const u8,
+    // objects: ?[]Object = null,
+    // offsetx: f32 = 0,
+    // offsety: f32 = 0,
+    // opacity: f32,
+    // parallaxx: f32 = 1,
+    // parallaxy: f32 = 1,
+    // properties: ?[]Property = null,
+    // repeatx: ?bool = null,
+    // repeaty: ?bool = null,
+    // startx: ?i32 = null,
+    // starty: ?i32 = null,
+    // tintcolor: ?[]const u8 = null,
+    // transparentcolor: ?[]const u8 = null,
+    type: Type,
+    // visible: bool,
+    // width: ?u32 = null,
+    // x: i32,
+    // y: i32,
+
+    pub fn jsonParseFromValue(allocator: std.mem.Allocator, source: std.json.Value, options: std.json.ParseOptions) !@This() {
+        _ = allocator; // autofix
+        _ = options; // autofix
+        if (source.object.get("type")) |layer_type| {
+            if (std.mem.eql(u8, layer_type.string, "tilelayer")) {
+                if (source.object.get("encoding")) |encoding| {
+                    if (std.mem.eql(u8, encoding.string, "csv")) {
+                        return .{ .type = Type.fromString(layer_type.string) };
+                    }
+                } else {
+                    return .{ .type = Type.fromString(layer_type.string) };
+                }
+            }
+        } else {
+            return error.MissingField;
+        }
+        return error.MissingField;
+    }
+
+    pub const Type = enum {
+        tilelayer,
+        objectgroup,
+        imagelayer,
+        group,
+
+        pub fn fromString(string: []const u8) Type {
+            if (std.mem.eql(u8, string, "tilelayer")) {
+                return .tilelayer;
+            }
+            return .tilelayer;
+        }
+    };
+    pub const Encoding = enum { csv, base64 };
+
+    // pub fn jsonParseFromValue(allocator: Allocator, source: std.json.Value, options: std.json.ParseOptions) !@This() {
+    //     if (source != .object) return error.UnexpectedToken;
+    //     if (source.object.get("data")) |source_data| {
+    //         std.log.info("yayyyyyyyyyyyy  : {s}\n\n\n", .{source.object.keys()});
+    //         const encoding_value: std.json.Value = source.object.get("encoding") orelse .{ .string = "csv" };
+    //         if (encoding_value != .string) return error.UnexpectedToken;
+    //         const encoding = encoding_value.string;
+    //         var data: []const u32 = undefined;
+    //         if (std.mem.eql(u8, encoding, "base64")) {
+    //             var base64 = try std.json.parseFromValueLeaky([]const u8, allocator, source_data, options);
+
+    //             // var buffer = allocator.alloc(u8, std.base64.standard.Decoder.calcSizeForSlice(base64) catch return error.UnexpectedToken);
+    //             var buffer: [0x10000]u8 = undefined;
+    //             var decoded = buffer[0 .. std.base64.standard.Decoder.calcSizeForSlice(base64) catch return error.UnexpectedToken];
+    //             std.base64.standard.Decoder.decode(decoded, base64) catch return error.UnexpectedToken;
+
+    //             data = &[_]u32{ 1, 4 };
+    //         } else {
+    //             data = try std.json.parseFromValueLeaky([]const u32, allocator, source_data, options);
+    //         }
+    //         return .{
+    //             .id = @intCast(source.object.get("id").?.integer),
+    //             .name = source.object.get("name").?.string,
+    //             .opacity = 0,
+    //             .type = .tilelayer,
+    //             .visible = true,
+    //             .x = 0,
+    //             .y = 0,
+    //             .data = data,
+    //         };
+    //     } else {
+    //         std.log.err("brooooo  : {s}\n\n\n", .{source.object.keys()});
+    //         return error.UnexpectedToken;
+    //     }
+    // }
+};
+
+pub const Data = union(enum) {
+    csv: []const u32,
+    base64: []const u8,
+};
+
+pub const Chunk = struct {
+    data: []const u32,
+    height: u32,
+    width: u32,
+    x: u32,
+    y: u32,
+};
+
+pub const Object = struct {
+    ellipse: ?bool = null,
+    gid: ?u32 = null,
+    height: f32,
+    id: u32,
+    name: []const u8,
+    point: ?bool = null,
+    polygon: ?[]Point = null,
+    polyline: ?[]Point = null,
+    properties: ?[]Property = null,
+    rotation: f32,
+    template: ?[]const u8 = null,
+    text: ?Text = null,
+    type: ?[]const u8 = null,
+    visible: bool,
+    width: f32,
+    x: f32,
+    y: f32,
+};
+
+pub const Point = struct {
+    x: f32,
+    y: f32,
+};
+
+pub const Text = struct {
+    bold: bool,
+    color: []const u8,
+    fontfamily: []const u8 = "sans-serif",
+    halign: enum { center, right, justify, left } = .left,
+    italic: bool = false,
+    kerning: bool = true,
+    pixelsize: usize = 16,
+    strikeout: bool = false,
+    text: []const u8,
+    underline: bool = false,
+    valign: enum { center, bottom, top } = .top,
+    wrap: bool = false,
+};
+
+pub const Property = struct {
+    name: []const u8,
+    type: enum {
+        string,
+        int,
+        float,
+        bool,
+        color,
+        file,
+        object,
+        class,
+    } = .string,
+    propertytype: []const u8 = "",
+};
+
+pub const Tileset = struct {
+    backgroundcolor: ?[]const u8 = null,
+    class: ?[]const u8 = null,
+    columns: ?u32 = null,
+    fillmode: ?enum { stretch, @"preserve-aspect-fit" } = .stretch,
+    firstgid: u32,
+    grid: ?Grid = null,
+    image: ?[]const u8 = null,
+    imageheight: ?u32 = null,
+    imagewidth: ?u32 = null,
+    margin: ?u32 = null,
+    name: ?[]const u8 = null,
+    objectalignment: ?enum { unspecified, topleft, top, topright, left, center, right, bottomleft, bottom, bottomright } = .unspecified,
+    properties: ?[]Property = null,
+    source: []const u8,
+    spacing: ?i32 = null,
+    terrains: ?[]Terrain = null,
+    tilecount: ?u32 = null,
+    tileversion: ?[]const u8 = null,
+    tileheight: ?u32 = null,
+    tileoffset: ?Point = null,
+    tilerendersize: ?enum { tile, grid } = .tile,
+    tiles: ?[]Tile = null,
+    tilewidth: ?u32 = null,
+    transformations: ?Transformations = null,
+    transparentcolor: ?[]const u8 = null,
+    type: ?enum { tileset } = .tileset,
+    version: ?[]const u8 = null,
+    wangsets: ?[]Wangset = null,
+};
+
+pub const Grid = struct {
+    orientation: enum { orthogonal, isometric } = .orthogonal,
+    height: i32,
+    width: i32,
+};
+
+pub const Terrain = struct {
+    name: []const u8,
+    properties: []Property,
+    tile: i32,
+};
+
+pub const Tile = struct {
+    animiation: []Frame,
+    id: i32,
+    name: ?[]const u8,
+    imageheight: u32,
+    imagewidth: u32,
+    x: i32,
+    y: i32,
+    width: u32,
+    height: u32,
+    objectgroup: ?Layer,
+    probability: f32,
+    properties: []Property,
+    terrain: []i32,
+    type: []const u8,
+};
+
+pub const Frame = struct {
+    duration: i32,
+    tileid: i32,
+};
+
+pub const Transformations = struct {
+    hflip: bool,
+    vflip: bool,
+    rotate: bool,
+    preferuntransformed: bool,
+};
+
+pub const Wangset = struct {
+    class: ?[]const u8,
+    colors: []Wangcolor,
+    name: []const u8,
+    properties: []Property,
+    tile: i32,
+    type: []const u8,
+    wangtiles: []Wangtile,
+};
+
+pub const Wangcolor = struct {
+    class: ?[]const u8,
+    color: []const u8,
+    name: []const u8,
+    probability: f32,
+    properties: []Property,
+    tile: i32,
+};
+
+pub const Wangtile = struct {
+    tileid: i32,
+    wangid: []i32,
+};
+
+pub fn parse(bytes: []const u8, allocator: std.mem.Allocator) !Map {
+    const map = try std.json.parseFromSliceLeaky(std.json.Value, allocator, bytes, .{});
+    return try std.json.parseFromValueLeaky(Map, allocator, map, .{ .ignore_unknown_fields = true });
+}
+
+test "parse works" {
+    const json_map = @embedFile("test/map.tmj");
+
+    var arena = std.heap.ArenaAllocator.init(std.testing.allocator);
+    defer arena.deinit();
+    const map = try parse(json_map, arena.allocator());
+    try std.testing.expectEqualStrings("1.10", map.version);
+
+    // try std.testing.expectEqual(0, map.globalTileId(0));
+}