working demo of what the metdata exporter is supposed to do

.vscode/tasks.json

@@ -70,7 +70,7 @@
                         },
                         "group": {
                                 "kind": "build",
-                                "isDefault": true
+                                "isDefault": false
                         },
                 },
                 {
@@ -92,7 +92,7 @@
                         },
                         "group": {
                                 "kind": "build",
-                                "isDefault": false
+                                "isDefault": true
                         },
                 }
         ]

odinfmt.json

@@ -0,0 +1,6 @@
+{
+    "$schema": "https://raw.githubusercontent.com/DanielGavin/ols/master/misc/odinfmt.schema.json",
+    "character_width": 100,
+    "sort_imports": true,
+    "tabs": true
+}

src/aseprite_odin_generator/aseprite_odin_generator.odin

@@ -1,14 +1,17 @@
 package generator
 
 import ase "../aseprite"
+import "core:encoding/json"
 import "core:fmt"
 import "core:mem"
 import "core:os"
 import fp "core:path/filepath"
 import "core:slice"
-import "core:strings"
+import s "core:strings"
 import "core:testing"
+
 import rl "vendor:raylib"
+import stbrp "vendor:stb/rect_pack"
 
 import gen ".."
 
@@ -24,14 +27,17 @@ main :: proc() {
 	}
 
 	cwd := os.get_current_directory()
-	target_dir := strings.concatenate({cwd, "\\src\\aseprite_odin_generator\\"})
+	target_dir := s.concatenate({cwd, "\\src\\aseprite_odin_generator\\"})
 
 	atlas: rl.Image = rl.GenImageColor(ATLAS_SIZE, ATLAS_SIZE, rl.BLANK)
 	atlas_entries: [dynamic]gen.AtlasEntry
 	gen.unmarshall_aseprite_dir(target_dir, &atlas_entries)
 
+	metadata := gen.pack_atlas_entries(atlas_entries[:], &atlas, 10, 10)
+
+	json_bytes, jerr := json.marshal(metadata)
+        os.write_entire_file("src/aseprite_odin_generator/metadata.json", json_bytes)
 
-	gen.pack_atlas_entries(atlas_entries[:], &atlas, 10, 10)
 
 	rl.ExportImage(atlas, EXPORT_PATH)
 }

src/aseprite_odin_generator/metadata.json

@@ -0,0 +1 @@
+[{"name":"Edinica","location":[95,10],"size":[58,57]},{"name":"Dvoika_0","location":[234,10],"size":[55,31]},{"name":"Troika","location":[10,10],"size":[75,75]},{"name":"Dvoika_1","location":[163,10],"size":[61,33]}]

src/generator.odin

@@ -1,15 +1,41 @@
 package game
 
 import ase "./aseprite"
+import "core:encoding/json"
 import "core:fmt"
+import "core:mem"
 import "core:os"
 import fp "core:path/filepath"
+import "core:strings"
 import rl "vendor:raylib"
 import stbrp "vendor:stb/rect_pack"
 
+CellData :: struct {
+	layer_index: u16,
+	opacity:     u8,
+	frame_index: i32,
+	img:         rl.Image,
+}
+
 AtlasEntry :: struct {
-	path:  string,
-	cells: [dynamic]rl.Image,
+	path:             string,
+	cells:            [dynamic]CellData,
+	frames:           i32,
+	layer_names:      [dynamic]string,
+	layer_cell_count: [dynamic]i32,
+}
+
+SingleFrameSprite :: distinct rl.Rectangle
+
+AnimatedSprite :: struct {
+	x, y:          i32,
+	width, height: i32,
+}
+
+SpriteAtlasMetadata :: struct {
+	name:     string,
+	location: [2]i32,
+	size:     [2]i32,
 }
 
 unmarshall_aseprite_dir :: proc(path: string, atlas_entries: ^[dynamic]AtlasEntry) {
@@ -27,14 +53,22 @@ unmarshall_aseprite_files_file_info :: proc(
 	files: []os.File_Info,
 	atlas_entries: ^[dynamic]AtlasEntry,
 ) {
-	paths: [dynamic]string
-	for f in files {
-		append(&paths, f.fullpath)
+	if len(files) == 0 do return
+
+	paths := make([]string, len(files))
+	defer delete(paths)
+
+	for f, fi in files {
+		paths[fi] = f.fullpath
 	}
+
 	unmarshall_aseprite_files(paths[:], atlas_entries)
+
 }
 
 unmarshall_aseprite_files :: proc(file_paths: []string, atlas_entries: ^[dynamic]AtlasEntry) {
+	if len(file_paths) == 0 do return
+
 	aseprite_document: ase.Document
 	for file in file_paths {
 		extension := fp.ext(file)
@@ -43,6 +77,7 @@ unmarshall_aseprite_files :: proc(file_paths: []string, atlas_entries: ^[dynamic
 		fmt.println("Unmarshalling file: ", file)
 		ase.unmarshal_from_filename(file, &aseprite_document)
 		atlas_entry := atlas_entry_from_compressed_cells(aseprite_document)
+		atlas_entry.path = file
 
 		append(atlas_entries, atlas_entry)
 	}
@@ -52,26 +87,34 @@ unmarshall_aseprite_files :: proc(file_paths: []string, atlas_entries: ^[dynamic
         Goes through all the chunks in an aseprite document & copies the `Com_Image_Cel` cells in a separate image
 */
 atlas_entry_from_compressed_cells :: proc(document: ase.Document) -> (atlas_entry: AtlasEntry) {
-	for frame in document.frames {
+	atlas_entry.frames = auto_cast len(document.frames)
+	fmt.println("N Frames: ", len(document.frames))
+	for frame, frameIdx in document.frames {
+		fmt.printfln("Frame_{0} Chunks: ", frameIdx, len(frame.chunks))
 		for chunk in frame.chunks {
-			cel_chunk, cok := chunk.(ase.Cel_Chunk)
-			if !cok {
-				continue
-			}
+			if cel_chunk, ok := chunk.(ase.Cel_Chunk); ok {
+				cel_img, ci_ok := cel_chunk.cel.(ase.Com_Image_Cel)
+				if !ci_ok do continue
 
-			cel_img, ci_ok := cel_chunk.cel.(ase.Com_Image_Cel)
-			if !ci_ok {
-				continue
+				fmt.println(cel_chunk.layer_index)
+
+				cell := CellData {
+					img = rl.Image {
+						data = rawptr(&cel_img.pixel[0]),
+						width = auto_cast cel_img.width,
+						height = auto_cast cel_img.height,
+						format = .UNCOMPRESSED_R8G8B8A8,
+					},
+					frame_index = auto_cast frameIdx,
+					opacity = cel_chunk.opacity_level,
+					layer_index = cel_chunk.layer_index,
+				}
+				append(&atlas_entry.cells, cell)
+			}
+			if layer_chunk, ok := chunk.(ase.Layer_Chunk); ok {
+				fmt.println("Layer chunk: ", layer_chunk)
+				append(&atlas_entry.layer_names, layer_chunk.name)
 			}
-			append(
-				&atlas_entry.cells,
-				rl.Image {
-					data = rawptr(&cel_img.pixel[0]),
-					width = auto_cast cel_img.width,
-					height = auto_cast cel_img.height,
-					format = .UNCOMPRESSED_R8G8B8A8,
-				},
-			)
 		}
 	}
 	return
@@ -80,26 +123,33 @@ atlas_entry_from_compressed_cells :: proc(document: ase.Document) -> (atlas_entr
 /*
         Takes in a slice of entries, an output texture and offsets (offset_x/y)
 */
-pack_atlas_entries :: proc(entries: []AtlasEntry, atlas: ^rl.Image, offset_x: i32, offset_y: i32) {
-        assert(atlas.width != 0, "This shouldn't be 0!")
-        assert(atlas.height != 0, "This shouldn't be 0!")
+pack_atlas_entries :: proc(
+	entries: []AtlasEntry,
+	atlas: ^rl.Image,
+	offset_x: i32,
+	offset_y: i32,
+	allocator := context.allocator,
+) -> [dynamic]SpriteAtlasMetadata {
+	assert(atlas.width != 0, "Atlas width shouldn't be 0!")
+	assert(atlas.height != 0, "Atlas height shouldn't be 0!")
 
-	all_entries: [dynamic]rl.Image // it's fine to store it like this, rl.Image just stores a pointer to the data
-	{
-		for entry in entries {
-			append(&all_entries, ..entry.cells[:])
+	all_cell_images := make([dynamic]rl.Image, allocator) // it's fine to store it like this, rl.Image just stores a pointer to the data
+	for &entry in entries {
+		for cell in entry.cells {
+			append(&all_cell_images, cell.img)
 		}
+		entry.layer_cell_count = make([dynamic]i32, len(entry.cells), allocator)
 	}
 
-	num_entries := len(all_entries)
-	nodes := make([]stbrp.Node, num_entries)
-	rects := make([]stbrp.Rect, num_entries)
+	num_entries := len(all_cell_images)
+	nodes := make([]stbrp.Node, num_entries, allocator)
+	rects := make([]stbrp.Rect, num_entries, allocator)
 
 	EntryAndCell :: struct {
 		entry:         ^AtlasEntry,
-		cell_of_entry: ^rl.Image,
+		cell_of_entry: ^CellData,
 	}
-	rect_idx_to_entry_and_cell: map[int]EntryAndCell
+	rect_idx_to_entry_and_cell := make(map[int]EntryAndCell, 100, allocator)
 
 	// Set the custom IDs
 	cellIdx: int
@@ -109,13 +159,15 @@ pack_atlas_entries :: proc(entries: []AtlasEntry, atlas: ^rl.Image, offset_x: i3
 			map_insert(&rect_idx_to_entry_and_cell, cellIdx, EntryAndCell{&entry, &cell})
 			rects[cellIdx].id = auto_cast entryIdx
 			cellIdx += 1
+
+			entry.layer_cell_count[cell.layer_index] += 1
 		}
 	}
 
-	for entry, entryIdx in all_entries {
-		entry_stb_rect := &rects[entryIdx]
-		entry_stb_rect.w = stbrp.Coord(entry.width + offset_x)
-		entry_stb_rect.h = stbrp.Coord(entry.height + offset_y)
+	for cell_image, cell_index in all_cell_images {
+		entry_stb_rect := &rects[cell_index]
+		entry_stb_rect.w = stbrp.Coord(cell_image.width + offset_x)
+		entry_stb_rect.h = stbrp.Coord(cell_image.height + offset_y)
 	}
 
 	ctx: stbrp.Context
@@ -131,22 +183,53 @@ pack_atlas_entries :: proc(entries: []AtlasEntry, atlas: ^rl.Image, offset_x: i3
 	for rect, rectIdx in rects {
 		entry_and_cell := rect_idx_to_entry_and_cell[auto_cast rectIdx]
 		cell := entry_and_cell.cell_of_entry
-		// We're grabbing the whole cell (the image itself)
+
 		src_rect := rl.Rectangle {
 			x      = 0,
 			y      = 0,
-			width  = auto_cast cell.width,
-			height = auto_cast cell.height,
+			width  = auto_cast cell.img.width,
+			height = auto_cast cell.img.height,
 		}
-		// Placing it in the atlas in the calculated offsets (in the packing step)
+
 		dst_rect := rl.Rectangle {
 			auto_cast rect.x + auto_cast offset_x,
 			auto_cast rect.y + auto_cast offset_y,
-			auto_cast cell.width,
-			auto_cast cell.height,
+			auto_cast cell.img.width,
+			auto_cast cell.img.height,
 		}
-		fmt.printfln("Src rect: {0}\nDst rect:{1}", src_rect, dst_rect)
 
-		rl.ImageDraw(atlas, cell^, src_rect, dst_rect, rl.WHITE)
+		// note(stefan): drawing the sprite in the atlas in the packed coordinates
+		rl.ImageDraw(atlas, cell.img, src_rect, dst_rect, rl.WHITE)
+
+		fmt.printfln("Src rect: {0}\nDst rect:{1}", src_rect, dst_rect)
 	}
+
+	metadata := make([dynamic]SpriteAtlasMetadata, allocator)
+	for rect, rectIdx in rects {
+		entry_and_cell := rect_idx_to_entry_and_cell[auto_cast rectIdx]
+		entry := entry_and_cell.entry
+		cell := entry_and_cell.cell_of_entry
+
+                cell_name : string
+                if entry.layer_cell_count[cell.layer_index] > 1 {
+                        cell_name = fmt.aprintf(
+                                "{0}_%d",
+                                entry.layer_names[cell.layer_index],
+                                cell.frame_index,
+                                allocator,
+                        )
+                } else {
+                        cell_name = entry.layer_names[cell.layer_index]
+                }
+		cell_metadata := SpriteAtlasMetadata {
+			name     = cell_name,
+			location =  {
+				auto_cast rect.x + auto_cast offset_x,
+				auto_cast rect.y + auto_cast offset_y,
+			},
+			size     = {auto_cast cell.img.width, auto_cast cell.img.height},
+		}
+		append(&metadata, cell_metadata)
+	}
+	return metadata
 }

src/globals.odin

@@ -34,7 +34,6 @@ PackerSettings :: struct {
 	pixel_padding_x_int: i32,
 	pixel_padding_y_int: i32,
 	padding_enabled:     bool,
-	fix_pixel_bleeding:  bool,
 	output_json:         bool,
 	output_odin:         bool,
 }

src/save_output.odin

@@ -22,5 +22,7 @@ save_output :: proc() {
 		output_path := strings.concatenate({output_path, atlas_path})
 		cstring_output_path := strings.clone_to_cstring(output_path)
 		rl.ExportImage(image, cstring_output_path)
-	}
+	} else {
+                fmt.println("Output path is empty!")
+        }
 }

src/symbol_exports.odin

@@ -13,7 +13,6 @@ game_update :: proc() -> bool {
 game_init_window :: proc() {
 	rl.SetConfigFlags({.WINDOW_RESIZABLE})
 	rl.InitWindow(1400, 800, "YAAP - Yet Another Atlas Packer")
-	rl.SetWindowPosition(200, 200)
 	rl.SetWindowMinSize(1400, 800)
 }