From 8a7ca839fa371162c3064801d9b454530f654f15 Mon Sep 17 00:00:00 2001
From: Alexey Bagno <alexey.bagno@gmail.com>
Date: Fri, 21 Aug 2026 19:48:16 +0500
Subject: [PATCH] Map parsing

---
 Tiled/Map.tsx             |   4 ++
 Tiled/hello.tiled-session |  36 +++++++++-
 Tiled/безымянный.json     | 113 +++++++++++++++++++++++++++++++
 Tiled/безымянный.tmx      |  76 +++++++++++++++++++++
 main.odin                 |  89 ++++++++++++------------
 map.odin                  |  22 ++++--
 test/main.odin            |   0
 test/test2/test/main.odin |   0
 tiled_parser.odin         | 139 ++++++++++++++++++++++++++++++++++++++
 9 files changed, 426 insertions(+), 53 deletions(-)
 create mode 100644 Tiled/Map.tsx
 create mode 100644 Tiled/безымянный.json
 create mode 100644 Tiled/безымянный.tmx
 create mode 100644 test/main.odin
 create mode 100644 test/test2/test/main.odin
 create mode 100644 tiled_parser.odin

diff --git a/Tiled/Map.tsx b/Tiled/Map.tsx
new file mode 100644
index 0000000..0b4ef26
--- /dev/null
+++ b/Tiled/Map.tsx
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tileset version="1.10" tiledversion="1.11.2" name="Map" tilewidth="16" tileheight="16" tilecount="120" columns="8">
+ <image source="../assets/3rdparty/tileset/Tiles/Tileset.png" width="128" height="240"/>
+</tileset>
diff --git a/Tiled/hello.tiled-session b/Tiled/hello.tiled-session
index e0d9b11..efc04bf 100644
--- a/Tiled/hello.tiled-session
+++ b/Tiled/hello.tiled-session
@@ -1,12 +1,44 @@
 {
-    "activeFile": "",
+    "Map/SizeTest": {
+        "height": 4300,
+        "width": 2
+    },
+    "activeFile": "безымянный.tmx",
     "expandedProjectPaths": [
     ],
+    "file.lastUsedOpenFilter": "Все файлы (*)",
     "fileStates": {
+        "Map.tsx": {
+            "scaleInDock": 1,
+            "scaleInEditor": 1
+        },
+        "безымянный.tmx": {
+            "scale": 1.6605208333333332,
+            "selectedLayer": 2,
+            "viewCenter": {
+                "x": 240.2860548271752,
+                "y": 159.88959287372188
+            }
+        }
     },
+    "last.exportedFilePath": "/Users/aleksejbagno/projects/odin/hello/Tiled",
+    "last.imagePath": "/Users/aleksejbagno/projects/odin/hello/assets/3rdparty/tileset/Tiles",
+    "map.lastUsedExportFilter": "JSON map-файлы (*.tmj *.json)",
+    "map.lastUsedFormat": "tmx",
+    "map.tileHeight": 16,
+    "map.tileWidth": 16,
     "openFiles": [
+        "безымянный.tmx",
+        "Map.tsx"
     ],
     "project": "hello.tiled-project",
     "recentFiles": [
-    ]
+        "Map.tsx",
+        "безымянный.tmx"
+    ],
+    "tileset.lastUsedFormat": "tsx",
+    "tileset.tileSize": {
+        "height": 16,
+        "width": 16
+    }
 }
diff --git a/Tiled/безымянный.json b/Tiled/безымянный.json
new file mode 100644
index 0000000..07d90c5
--- /dev/null
+++ b/Tiled/безымянный.json
@@ -0,0 +1,113 @@
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diff --git a/Tiled/безымянный.tmx b/Tiled/безымянный.tmx
new file mode 100644
index 0000000..e58009e
--- /dev/null
+++ b/Tiled/безымянный.tmx
@@ -0,0 +1,76 @@
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+62,0,0,81,82,83,0,0,0,0,0,0,0,0,33,34,34,34,34,43,0,0,0,0,0,0,0,0,0,60,
+62,0,0,89,90,91,0,0,0,0,0,0,0,0,41,42,42,42,43,0,0,0,0,0,0,0,0,0,0,60,
+62,0,0,97,98,99,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,60,
+62,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,60,
+56,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,55
+</data>
+ </layer>
+ <layer id="3" name="Слой тайлов 3" width="30" height="20">
+  <data encoding="csv">
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,7,7,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,7,0,0,0,7,0,7,0,7,0,7,0,0,0,7,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,7,0,7,0,0,0,7,7,0,7,0,0,7,7,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,7,0,0,0,0,0,7,0,7,0,7,0,7,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,7,0,7,0,0,0,7,0,0,7,7,0,0,7,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,7,0,0,0,7,0,7,0,0,0,7,0,0,0,7,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+</data>
+ </layer>
+</map>
diff --git a/main.odin b/main.odin
index 1817ac9..d80d352 100644
--- a/main.odin
+++ b/main.odin
@@ -1,5 +1,6 @@
 package main
 
+import "base:runtime"
 import hm "core:container/handle_map"
 import "core:fmt"
 import rl "vendor:raylib"
@@ -34,6 +35,8 @@ create_scene :: proc() -> Scene {
 			offset = rl.Vector2{SCREEN_W / 2, SCREEN_H / 2},
 		},
 	}
+
+
 	// _ = hm.add(
 	// 	&scene.enemies,
 	// 	Enemy {
@@ -72,7 +75,7 @@ draw_scene :: proc(scene: ^Scene) {
 			0,
 			0,
 			cast(f32)scene.map_tex.texture.width,
-			cast(f32)scene.map_tex.texture.height,
+			-cast(f32)scene.map_tex.texture.height, // FIX: flip Y axis
 		},
 		rl.Rectangle {
 			0,
@@ -107,51 +110,33 @@ draw_scene :: proc(scene: ^Scene) {
 	rl.EndMode2D()
 }
 
-render_map :: proc(atlas: ^Atlas) -> rl.RenderTexture2D {
-	map_data := [16][16]i32 {
-		{0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10},
-		{16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 18},
-	}
-	width := i32(atlas.tile_size.x) * 16
-	height := i32(atlas.tile_size.y) * 16
-	tex := rl.LoadRenderTexture(width, height)
+render_map :: proc(atlas: ^Atlas, map_data: Map) -> rl.RenderTexture2D {
+	tex := rl.LoadRenderTexture(map_data.width * 16, map_data.height * 16)
 	rl.BeginTextureMode(tex)
-	for row, i in map_data {
-		for col, j in row {
-			offset := get_offset(atlas, col)
-			fmt.printf("offset: %v, frame: %v\n", offset, col)
-			rl.DrawTexturePro(
-				atlas^.tex,
-				rl.Rectangle {
-					offset.x,
-					offset.y,
-					atlas.tile_size.x,
-					atlas.tile_size.y,
-				},
-				rl.Rectangle {
-					f32(j) * atlas.tile_size.x,
-					f32(i) * atlas.tile_size.y,
-					atlas.tile_size.x,
-					atlas.tile_size.y,
-				},
-				rl.Vector2{0, 0},
-				0,
-				rl.WHITE,
-			)
+	for layer in map_data.layers {
+		for row_data, row in layer.data {
+			for tile_id, col in row_data {
+				offset, empty := get_offset(atlas, tile_id)
+				if empty do continue
+				rl.DrawTexturePro(
+					atlas^.tex,
+					rl.Rectangle {
+						offset.x,
+						offset.y,
+						atlas.tile_size.x,
+						atlas.tile_size.y,
+					},
+					rl.Rectangle {
+						f32(col) * atlas.tile_size.x,
+						f32(row) * atlas.tile_size.y,
+						atlas.tile_size.x,
+						atlas.tile_size.y,
+					},
+					rl.Vector2{0, 0},
+					0,
+					rl.WHITE,
+				)
+			}
 		}
 	}
 	rl.EndTextureMode()
@@ -183,9 +168,21 @@ main :: proc() {
 	defer rl.CloseWindow()
 	rl.SetTargetFPS(60)
 
+
+	arena: runtime.Arena
+	defer runtime.arena_destroy(&arena)
+
+	arena_alloc := runtime.arena_allocator(&arena)
+
+	map_data, err := load_map(
+		"./Tiled/безымянный.json",
+		arena_alloc,
+	)
+	if err.type != .None do fmt.println(err.msg)
+
 	//WARN: Add a destructor to free (handlemap dangling)
 	scene := create_scene()
-	scene.map_tex = render_map(&scene.atlas)
+	scene.map_tex = render_map(&scene.atlas, map_data)
 
 	for !rl.WindowShouldClose() {
 		dt := rl.GetFrameTime()
diff --git a/map.odin b/map.odin
index bc42c0f..685ccca 100644
--- a/map.odin
+++ b/map.odin
@@ -51,7 +51,8 @@ load_atlas :: proc() -> Atlas {
 
 
 draw_tile :: proc(tile: Tile) {
-	offset := get_offset(tile.atlas, tile.frame)
+	offset, empty := get_offset(tile.atlas, tile.frame)
+	if empty do return
 	rl.DrawTexturePro(
 		tile.atlas^.tex,
 		rl.Rectangle {
@@ -73,13 +74,24 @@ draw_tile :: proc(tile: Tile) {
 	)
 }
 
-get_offset :: proc(atlas: ^Atlas, f: i32) -> rl.Vector2 {
+get_offset :: proc(
+	atlas: ^Atlas,
+	f: i32,
+) -> (
+	offset: rl.Vector2,
+	empty: bool,
+) {
 
-	col := f % atlas.cols
-	row := f / atlas.cols
+	if f == 0 do return {}, true
 
-	return rl.Vector2 {
+	col := (f - 1) % atlas.cols
+	row := (f - 1) / atlas.cols
+
+
+	offset = rl.Vector2 {
 		f32(col) * atlas.tile_size.x,
 		f32(row) * atlas.tile_size.y,
 	}
+
+	return
 }
diff --git a/test/main.odin b/test/main.odin
new file mode 100644
index 0000000..e69de29
diff --git a/test/test2/test/main.odin b/test/test2/test/main.odin
new file mode 100644
index 0000000..e69de29
diff --git a/tiled_parser.odin b/tiled_parser.odin
new file mode 100644
index 0000000..5710ded
--- /dev/null
+++ b/tiled_parser.odin
@@ -0,0 +1,139 @@
+package main
+
+import "base:runtime"
+import "core:encoding/json"
+import "core:fmt"
+import "core:os"
+
+Map_File :: struct {
+	compression_level: int `json:"compressionlevel"`,
+	height:            int `json:"height"`,
+	infinite:          bool `json:"infinite"`,
+	layers:            []Layer `json:"layers"`,
+	next_layer_id:     int `json:"nextlayerid"`,
+	next_object_id:    int `json:"nextobjectid"`,
+	orientation:       string `json:"orientation"`,
+	render_order:      string `json:"renderorder"`,
+	tiled_version:     string `json:"tiledversion"`,
+	tile_height:       int `json:"tileheight"`,
+	tile_sets:         []Tileset `json:"tilesets"`,
+	tile_width:        int `json:"tilewidth"`,
+	type:              string `json:"type"`,
+	version:           string `json:"version"`,
+	width:             int `json:"width"`,
+}
+
+Layer :: struct {
+	data:    []int `json:"data"`,
+	height:  int `json:"height"`,
+	id:      int `json:"id"`,
+	name:    string `json:"name"`,
+	opacity: f32 `json:"opacity"`,
+	type:    string `json:"type"`,
+	visible: bool `json:"visible"`,
+	width:   int `json:"width"`,
+	x:       int `json:"x"`,
+	y:       int `json:"y"`,
+}
+
+Tileset :: struct {
+	first_gid: int `json:"firstgid"`,
+	source:    string `json:"source"`,
+}
+
+Map_Load_Error_Type :: enum {
+	None,
+	Err_Loading_File,
+	Err_Unmarshal,
+}
+
+Map_Load_Error :: struct {
+	type: Map_Load_Error_Type,
+	msg:  string,
+}
+
+Map :: struct {
+	width:  i32,
+	height: i32,
+	layers: []Layer_Data,
+}
+
+Layer_Data :: struct {
+	data: [][]i32,
+}
+
+load_map :: proc(
+	path: string,
+	allocator: runtime.Allocator,
+) -> (
+	map_out: Map,
+	err: Map_Load_Error,
+) {
+
+	context.allocator = allocator
+
+	cfg_data, os_err := os.read_entire_file(path, context.allocator)
+	if os_err != os.General_Error.None {
+		return {}, Map_Load_Error{type = .Err_Loading_File, msg = fmt.aprintf("Error reading file: %v (%v)", path, os_err)}
+	}
+
+	unm_map: Map_File
+	unm_err := json.unmarshal(cfg_data, &unm_map)
+	if unm_err != nil {
+		return {}, Map_Load_Error{type = .Err_Unmarshal, msg = fmt.aprintf("Error unmarshalling file: %v (%v)\nOnly Tiled version 1.11.2 is supported", path, unm_err)}
+	}
+
+	assert(!unm_map.infinite, "Infinite maps are not supported")
+	assert(
+		unm_map.orientation == "orthogonal",
+		"Only orthogonal maps are supported",
+	)
+	assert(
+		unm_map.render_order == "right-down",
+		"Only right-down maps are supported",
+	)
+	assert(
+		unm_map.tile_height == 16 && unm_map.tile_width == 16,
+		"Only 16x16 tiles are supported",
+	)
+
+
+	if len(unm_map.layers) == 0 {
+		return {}, Map_Load_Error{type = .Err_Unmarshal, msg = fmt.aprintf("No layers found in file: %v", path)}
+	}
+	if len(unm_map.tile_sets) == 0 {
+		return {}, Map_Load_Error{type = .Err_Unmarshal, msg = fmt.aprintf("No tilesets found in file: %v", path)}
+	}
+	for layer in unm_map.layers {
+		assert(
+			layer.type == "tilelayer",
+			"Only layers with type 'tilelayer' are supported",
+		)
+	}
+
+	map_out.width = i32(unm_map.width)
+	map_out.height = i32(unm_map.height)
+
+
+	map_out.layers = make([]Layer_Data, len(unm_map.layers))
+	for &out, li in map_out.layers {
+		src := unm_map.layers[li]
+		out.data = make([][]i32, src.height)
+		for row in 0 ..< src.height {
+			out.data[row] = make([]i32, src.width)
+			for col in 0 ..< src.width {
+				out.data[row][col] = i32(src.data[row * src.width + col])
+			}
+		}
+	}
+
+	// for layer in unm_map.layers {
+	// 	for tile, tile_id in layer.data {
+	// 		map_out.data[tile_id / layer.width][tile_id % layer.width] = i32(
+	// 			tile,
+	// 		)
+	// 	}
+	// }
+
+	return
+}