partial progress on chunked tilemap

libs/tiled/src/layer.zig

@@ -9,38 +9,135 @@ const Position = @import("./position.zig");
 const Layer = @This();
 
 pub const TileVariant = struct {
+    pub const Chunk = struct {
+        x: i32,
+        y: i32,
+        width: u32,
+        height: u32,
+        data: []u32,
+    };
+
+    pub const Data = union(enum) {
+        fixed: []u32,
+        chunks: []Chunk
+    };
+
+    const Encoding = enum {
+        csv,
+
+        const map: std.StaticStringMap(Encoding) = .initComptime(.{
+            .{ "csv", .csv },
+        });
+    };
+
     width: u32,
     height: u32,
-    data: []u32,
+    data: Data,
+
+    fn initChunkDataFromXml(
+        arena: std.mem.Allocator,
+        scratch: *std.heap.ArenaAllocator,
+        lexer: *xml.Lexer,
+        encoding: Encoding
+    ) !Chunk {
+        var iter = xml.TagParser.init(lexer);
+        const attrs = try iter.begin("chunk");
+
+        const x = try attrs.getNumber(i32, "x") orelse return error.MissingAttribute;
+        const y = try attrs.getNumber(i32, "y") orelse return error.MissingAttribute;
+        const width = try attrs.getNumber(u32, "width") orelse return error.MissingAttribute;
+        const height = try attrs.getNumber(u32, "height") orelse return error.MissingAttribute;
+
+        var temp_tiles: std.ArrayList(u32) = .empty;
+
+        while (try iter.next()) |node| {
+            if (node == .text) {
+                const encoded_tiles = try lexer.nextExpectText();
+                const tiles = try parseEncoding(encoding, scratch.allocator(), encoded_tiles);
+                try temp_tiles.appendSlice(scratch.allocator(), tiles.items);
+
+                continue;
+            }
+
+            try iter.skip();
+        }
+
+        try iter.finish("chunk");
+
+        return Chunk{
+            .x = x,
+            .y = y,
+            .width = width,
+            .height = height,
+            .data = try arena.dupe(u32, temp_tiles.items)
+        };
+    }
 
     fn initDataFromXml(
         arena: std.mem.Allocator,
         scratch: *std.heap.ArenaAllocator,
         lexer: *xml.Lexer,
-    ) ![]u32 {
+    ) !Data {
         var iter = xml.TagParser.init(lexer);
         const attrs = try iter.begin("data");
 
-        const encoding = attrs.get("encoding") orelse "csv";
+        const encoding = try attrs.getEnum(Encoding, "encoding", Encoding.map) orelse .csv;
         // TODO: compression
 
+        var temp_chunks: std.ArrayList(Chunk) = .empty;
         var temp_tiles: std.ArrayList(u32) = .empty;
 
-        if (std.mem.eql(u8, encoding, "csv")) {
+        while (try iter.next()) |node| {
-            const text = try lexer.nextExpectText();
+            if (node == .text) {
-            var split_iter = std.mem.splitScalar(u8, text, ',');
+                const encoded_tiles = try lexer.nextExpectText();
-            while (split_iter.next()) |raw_tile_id| {
+                const tiles = try parseEncoding(encoding, scratch.allocator(), encoded_tiles);
-                const tile_id_str = std.mem.trim(u8, raw_tile_id, &std.ascii.whitespace);
+                try temp_tiles.appendSlice(scratch.allocator(), tiles.items);
-                const tile_id = try std.fmt.parseInt(u32, tile_id_str, 10);
+
-                try temp_tiles.append(scratch.allocator(), tile_id);
+            } else if (node.isTag("chunk")) {
+                const chunk = try initChunkDataFromXml(scratch.allocator(), scratch, lexer, encoding);
+                try temp_chunks.append(scratch.allocator(), chunk);
+
+                continue;
             }
-        } else {
+
-            return error.UnknownEncodingType;
+            try iter.skip();
         }
 
         try iter.finish("data");
 
-        return try arena.dupe(u32, temp_tiles.items);
+        return .{
+            .fixed = try arena.dupe(u32, temp_tiles.items)
+        };
+    }
+
+    fn parseEncoding(
+        encoding: Encoding,
+        allocator: std.mem.Allocator,
+        text: []const u8
+    ) !std.ArrayList(u32) {
+        return switch (encoding) {
+            .csv => try parseCSVEncoding(allocator, text)
+        };
+    }
+
+    fn parseCSVEncoding(
+        allocator: std.mem.Allocator,
+        text: []const u8
+    ) !std.ArrayList(u32) {
+        var result: std.ArrayList(u32) = .empty;
+
+        var split_iter = std.mem.splitScalar(u8, text, ',');
+        while (split_iter.next()) |raw_tile_id| {
+            const tile_id_str = std.mem.trim(u8, raw_tile_id, &std.ascii.whitespace);
+            const tile_id = try std.fmt.parseInt(u32, tile_id_str, 10);
+            try result.append(allocator, tile_id);
+        }
+
+        return result;
+    }
+
+    pub fn getBounds(self: TileVariant) void {
+        _ = self; // autofix
     }
 
     pub fn get(self: TileVariant, x: usize, y: usize) ?u32 {
@@ -181,7 +278,7 @@ pub fn initFromXml(
                 .tile = TileVariant{
                     .width = width,
                     .height = height,
-                    .data = &[0]u32{}
+                    .data = .{ .fixed = &[0]u32{} }
                 }
             };
         },

src/assets.zig

@@ -1,5 +1,7 @@
 const std = @import("std");
 
+const tiled = @import("tiled");
+
 const Math =  @import("./engine/math.zig");
 const Engine = @import("./engine/root.zig");
 const Gfx = Engine.Graphics;
@@ -16,11 +18,11 @@ const FontName = enum {
 };
 
 font_id: FontName.EnumArray,
-
 wood01: Audio.Data.Id,
+map: tiled.Tilemap,
+tilesets: tiled.Tileset.List,
 
 pub fn init(gpa: std.mem.Allocator) !Assets {
-    _ = gpa; // autofix
     const font_id_array: FontName.EnumArray = .init(.{
         .regular = try Gfx.addFont("regular", @embedFile("assets/roboto-font/Roboto-Regular.ttf")),
         .bold = try Gfx.addFont("bold", @embedFile("assets/roboto-font/Roboto-Bold.ttf")),
@@ -32,13 +34,38 @@ pub fn init(gpa: std.mem.Allocator) !Assets {
         .data = @embedFile("assets/wood01.ogg"),
     });
 
+    var scratch = std.heap.ArenaAllocator.init(gpa);
+    defer scratch.deinit();
+
+    var xml_buffers = tiled.xml.Lexer.Buffers.init(gpa);
+    defer xml_buffers.deinit();
+
+    const map = try tiled.Tilemap.initFromBuffer(
+        gpa,
+        &scratch,
+        &xml_buffers,
+        @embedFile("assets/map.tmx")
+    );
+
+    const tileset = try tiled.Tileset.initFromBuffer(
+        gpa,
+        &scratch,
+        &xml_buffers,
+        @embedFile("assets/tileset.tsx")
+    );
+
+    var tilesets: tiled.Tileset.List = .empty;
+    try tilesets.add(gpa, "tileset.tsx", tileset);
+
     return Assets{
         .font_id = font_id_array,
-        .wood01 = wood01
+        .wood01 = wood01,
+        .map = map,
+        .tilesets = tilesets
     };
 }
 
 pub fn deinit(self: *Assets, gpa: std.mem.Allocator) void {
-    _ = self; // autofix
+    self.map.deinit();
-    _ = gpa; // autofix
+    self.tilesets.deinit(gpa);
 }

src/assets/game-2026-01-18.tiled-project

@@ -0,0 +1,14 @@
+{
+    "automappingRulesFile": "",
+    "commands": [
+    ],
+    "compatibilityVersion": 1100,
+    "extensionsPath": "extensions",
+    "folders": [
+        "."
+    ],
+    "properties": [
+    ],
+    "propertyTypes": [
+    ]
+}

src/assets/game-2026-01-18.tiled-session

@@ -0,0 +1,50 @@
+{
+    "Map/SizeTest": {
+        "height": 4300,
+        "width": 2
+    },
+    "activeFile": "map.tmx",
+    "expandedProjectPaths": [
+    ],
+    "fileStates": {
+        "map.tmx": {
+            "scale": 1.5,
+            "selectedLayer": 0,
+            "viewCenter": {
+                "x": 49.33333333333337,
+                "y": 182
+            }
+        },
+        "tilemap.tsx": {
+            "dynamicWrapping": false,
+            "scaleInDock": 1.5,
+            "scaleInEditor": 5.5
+        },
+        "tiles.tsx": {
+            "dynamicWrapping": true,
+            "scaleInDock": 1,
+            "scaleInEditor": 1
+        }
+    },
+    "last.imagePath": "/home/rokas/code/games/game-2026-01-18/src/assets/kenney_desert-shooter-pack_1.0/PNG/Tiles/Tilemap",
+    "map.fixedSize": false,
+    "map.lastUsedFormat": "tmx",
+    "map.tileHeight": 16,
+    "map.tileWidth": 16,
+    "openFiles": [
+        "tilemap.tsx",
+        "map.tmx"
+    ],
+    "project": "game-2026-01-18.tiled-project",
+    "recentFiles": [
+        "tilemap.tsx",
+        "map.tmx",
+        "tiles.tsx"
+    ],
+    "tileset.lastUsedFormat": "tsx",
+    "tileset.tileSize": {
+        "height": 16,
+        "width": 16
+    },
+    "tileset.type": 0
+}

src/assets/kenney_desert-shooter-pack_1.0/License.txt

@@ -0,0 +1,23 @@
+	
+
+	Desert Shooter Pack (1.0)
+
+	Created/distributed by Kenney (www.kenney.nl)
+	Sponsored by: GameMaker (www.gamemaker.io)
+	Creation date: 24-04-2024
+
+			------------------------------
+
+	License: (Creative Commons Zero, CC0)
+	http://creativecommons.org/publicdomain/zero/1.0/
+
+	This content is free to use in personal, educational and commercial projects.
+	Support us by crediting Kenney or www.kenney.nl (this is not mandatory)
+
+			------------------------------
+
+	Donate:   http://support.kenney.nl
+	Patreon:  http://patreon.com/kenney/
+
+	Follow on Twitter for updates:
+	http://twitter.com/KenneyNL

src/assets/kenney_desert-shooter-pack_1.0/PNG/Enemies/Tilesheet.txt

@@ -0,0 +1,9 @@
+Tilesheet information:
+
+Tile size                 •  24px × 24px
+Space between tiles       •  1px × 1px
+---
+Total tiles (horizontal)  •  4 tiles
+Total tiles (vertical)    •  4 tiles
+---
+Total tiles in sheet      •  16 tiles