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Support TexturePacker image atlases

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This commit is contained in:
gem
2026-06-09 12:49:01 +08:00
parent e2a584d4dc
commit 38f6e0c0c9
16 changed files with 343 additions and 26 deletions
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2
CHANGELOG.md
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@@ -2,7 +2,7 @@
## Unreleased
- Added atlas source-region and nine-slice image rendering fields for image-capable nodes.
- Added TexturePacker frame, manual source-region, and nine-slice image rendering fields for image-capable nodes.
- Added Runtime text shadow fields for text-capable nodes.
- Fixed Runtime node color alpha composition so `#AARRGGBB` alpha now multiplies with node/runtime alpha instead of being overwritten.

8
docs/protocol.md
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@@ -56,12 +56,16 @@ The shadow color alpha is multiplied by `RuntimeNode.alpha` and any runtime anim
### Image regions and nine-slice
Image-capable nodes (`image`, `sprite`, and image-backed `button`) may draw only part of an asset by setting source region fields in image pixels:
Image-capable nodes (`image`, `sprite`, and image-backed `button`) may draw only part of an asset.
For manual atlas regions, set source fields in image pixels:
- `sourceX` / `sourceY`: top-left source position inside the loaded image.
- `sourceWidth` / `sourceHeight`: source region size.
When source fields are omitted, the full image is used. This supports atlas-style usage where multiple sprites are packed into one image and nodes reference different source rectangles.
For TexturePacker JSON atlases, declare `atlas` on an image resource and set `frame` on the node. Image-backed buttons may also use `pressedFrame` and `disabledFrame`. The runtime supports TexturePacker JSON Hash and JSON Array `frames` formats with non-rotated frames. `rotated: true` frames are rejected.
When frame/source fields are omitted, the full image is used.
Image-capable nodes may also use nine-slice scaling with source-pixel insets:

6
example/assets/games/flight/scripts/runtime_defs.lua
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@@ -86,6 +86,9 @@
---@field type RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.
@@ -155,6 +158,9 @@
---@field type? RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.

6
example/assets/games/ludo/scripts/runtime_defs.lua
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@@ -86,6 +86,9 @@
---@field type RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.
@@ -155,6 +158,9 @@
---@field type? RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.

6
example/assets/games/showcase/scripts/runtime_defs.lua
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@@ -86,6 +86,9 @@
---@field type RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.
@@ -155,6 +158,9 @@
---@field type? RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.

6
example/assets/games/template/scripts/runtime_defs.lua
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@@ -86,6 +86,9 @@
---@field type RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.
@@ -155,6 +158,9 @@
---@field type? RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.

29
lib/runtime/models/runtime_node.dart
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@@ -8,6 +8,9 @@ class RuntimeNode {
required this.type,
this.parent,
this.asset,
this.frame,
this.pressedFrame,
this.disabledFrame,
this.sourceX,
this.sourceY,
this.sourceWidth,
@@ -78,6 +81,9 @@ class RuntimeNode {
final String type;
final String? parent;
final String? asset;
final String? frame;
final String? pressedFrame;
final String? disabledFrame;
final double? sourceX;
final double? sourceY;
final double? sourceWidth;
@@ -229,8 +235,19 @@ class RuntimeNode {
type: nextType,
parent: _parentProp(props, currentParent: parent, nodeId: id),
asset: _stringProp(props, RuntimeProtocolField.asset) ?? asset,
sourceX: _nonNegativeDoubleProp(props, RuntimeProtocolField.sourceX) ?? sourceX,
sourceY: _nonNegativeDoubleProp(props, RuntimeProtocolField.sourceY) ?? sourceY,
frame: _stringProp(props, RuntimeProtocolField.frame) ?? frame,
pressedFrame:
_stringProp(props, RuntimeProtocolField.pressedFrame) ??
pressedFrame,
disabledFrame:
_stringProp(props, RuntimeProtocolField.disabledFrame) ??
disabledFrame,
sourceX:
_nonNegativeDoubleProp(props, RuntimeProtocolField.sourceX) ??
sourceX,
sourceY:
_nonNegativeDoubleProp(props, RuntimeProtocolField.sourceY) ??
sourceY,
sourceWidth:
_positiveDoubleProp(props, RuntimeProtocolField.sourceWidth) ??
sourceWidth,
@@ -381,13 +398,13 @@ class RuntimeNode {
nodeId: _requiredString(map, RuntimeProtocolField.id),
),
asset: _stringProp(map, RuntimeProtocolField.asset),
frame: _stringProp(map, RuntimeProtocolField.frame),
pressedFrame: _stringProp(map, RuntimeProtocolField.pressedFrame),
disabledFrame: _stringProp(map, RuntimeProtocolField.disabledFrame),
sourceX: _nonNegativeDoubleProp(map, RuntimeProtocolField.sourceX),
sourceY: _nonNegativeDoubleProp(map, RuntimeProtocolField.sourceY),
sourceWidth: _positiveDoubleProp(map, RuntimeProtocolField.sourceWidth),
sourceHeight: _positiveDoubleProp(
map,
RuntimeProtocolField.sourceHeight,
),
sourceHeight: _positiveDoubleProp(map, RuntimeProtocolField.sourceHeight),
sliceLeft: _nonNegativeDoubleProp(map, RuntimeProtocolField.sliceLeft),
sliceTop: _nonNegativeDoubleProp(map, RuntimeProtocolField.sliceTop),
sliceRight: _nonNegativeDoubleProp(map, RuntimeProtocolField.sliceRight),

9
lib/runtime/packages/game_package_manifest.dart
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@@ -222,9 +222,16 @@ class GameResource {
'spine resource.skeleton must be a non-empty string',
);
}
} else if (path is! String || path.isEmpty) {
} else {
if (path is! String || path.isEmpty) {
throw const FormatException('resource.path must be a non-empty string');
}
if (atlas != null && (atlas is! String || atlas.isEmpty)) {
throw const FormatException(
'image resource.atlas must be a non-empty string',
);
}
}
final preload = map['preload'] as String? ?? GameResourcePreload.required;
if (!GameResourcePreload.isSupported(preload)) {
throw const FormatException('resource.preload is unsupported');

3
lib/runtime/packages/package_verifier.dart
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@@ -112,6 +112,9 @@ class PackageVerifier {
if (resource.type == GameResourceType.spine) {
return [resource.atlas!, resource.skeleton!];
}
if (resource.type == GameResourceType.image && resource.atlas != null) {
return [resource.path, resource.atlas!];
}
return [resource.path];
}
}

9
lib/runtime/protocol/runtime_protocol.dart
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@@ -138,6 +138,9 @@ class RuntimeProtocolField {
static const target = 'target';
static const parent = 'parent';
static const asset = 'asset';
static const frame = 'frame';
static const pressedFrame = 'pressedFrame';
static const disabledFrame = 'disabledFrame';
static const sourceX = 'sourceX';
static const sourceY = 'sourceY';
static const sourceWidth = 'sourceWidth';
@@ -233,6 +236,9 @@ class RuntimeProtocolSchema {
RuntimeProtocolField.type,
RuntimeProtocolField.parent,
RuntimeProtocolField.asset,
RuntimeProtocolField.frame,
RuntimeProtocolField.pressedFrame,
RuntimeProtocolField.disabledFrame,
RuntimeProtocolField.sourceX,
RuntimeProtocolField.sourceY,
RuntimeProtocolField.sourceWidth,
@@ -310,6 +316,9 @@ class RuntimeProtocolSchema {
RuntimeProtocolField.type,
RuntimeProtocolField.parent,
RuntimeProtocolField.asset,
RuntimeProtocolField.frame,
RuntimeProtocolField.pressedFrame,
RuntimeProtocolField.disabledFrame,
RuntimeProtocolField.sourceX,
RuntimeProtocolField.sourceY,
RuntimeProtocolField.sourceWidth,

27
lib/runtime/rendering/runtime_component.dart
View File

@@ -57,9 +57,7 @@ List<({Rect source, Rect destination})> runtimeNineSliceRects({
final destLeft = left.clamp(0.0, destination.width).toDouble();
final destTop = top.clamp(0.0, destination.height).toDouble();
final destRight = right.clamp(0.0, destination.width - destLeft).toDouble();
final destBottom = bottom
.clamp(0.0, destination.height - destTop)
.toDouble();
final destBottom = bottom.clamp(0.0, destination.height - destTop).toDouble();
final sourceXs = [
source.left,
@@ -529,7 +527,7 @@ class RuntimeComponent extends PositionComponent
_node.type == RuntimeNodeType.button)) {
final imagePaint = Paint()
..color = composeRuntimeColorAlpha(Colors.white, renderAlpha);
final source = _imageSourceRect(image);
final source = _imageSourceRect(image, _currentImageFrame(_node));
if (_usesNineSlice(source, rect)) {
_drawNineSliceImage(canvas, image, source, rect, imagePaint);
} else {
@@ -546,7 +544,13 @@ class RuntimeComponent extends PositionComponent
);
}
Rect _imageSourceRect(ui.Image image) {
Rect _imageSourceRect(ui.Image image, String? frameName) {
final frame = _loadedAsset == null
? null
: _resources.textureFrame(_loadedAsset!, frameName);
if (frame != null) {
return frame.rect;
}
return runtimeImageSourceRect(
imageWidth: image.width.toDouble(),
imageHeight: image.height.toDouble(),
@@ -666,6 +670,19 @@ class RuntimeComponent extends PositionComponent
return node.asset;
}
String? _currentImageFrame(RuntimeNode node) {
if (node.type != RuntimeNodeType.button) {
return node.frame;
}
if (!node.interactive && node.disabledFrame != null) {
return node.disabledFrame;
}
if (_pressed && node.pressedFrame != null) {
return node.pressedFrame;
}
return node.frame;
}
void _releaseRetainedImage(String asset, int generation, ui.Image? image) {
if (image == null) {
return;

128
lib/runtime/resources/game_resource_manager.dart
View File

@@ -1,3 +1,4 @@
import 'dart:convert';
import 'dart:ui' as ui;
import 'package:flame_spine/flame_spine.dart';
@@ -32,6 +33,7 @@ class GameResourceManager {
final RuntimeAsyncGate _asyncGate = RuntimeAsyncGate(initiallyClosed: true);
GamePackage? _package;
final Map<String, _ImageResourceRecord> _images = {};
final Map<String, RuntimeTextureAtlas> _textureAtlases = {};
int _cacheBytes = 0;
int _accessCounter = 0;
@@ -49,8 +51,10 @@ class GameResourceManager {
Future<void> mount(GamePackage package) async {
_releaseCachedImages();
_textureAtlases.clear();
_asyncGate.activate();
_package = package;
await loadDeclaredTextureAtlases(package.manifest);
await preloadDeclaredImages(package.manifest);
await preloadDeclaredSpines(package.manifest);
}
@@ -58,6 +62,7 @@ class GameResourceManager {
void dispose() {
_asyncGate.close();
_releaseCachedImages();
_textureAtlases.clear();
_package = null;
}
@@ -146,6 +151,17 @@ class GameResourceManager {
return _loadImage(keyOrPath, failOnError: false, retain: retain);
}
RuntimeTextureFrame? textureFrame(String keyOrPath, String? frameName) {
if (frameName == null || frameName.isEmpty) {
return null;
}
final path = _tryResolve(keyOrPath);
if (path == null) {
return null;
}
return _textureAtlases[path]?.frames[frameName];
}
Future<SpineComponent?> createSpineComponent(String? keyOrPath) {
return _createSpineComponent(keyOrPath);
}
@@ -223,6 +239,24 @@ class GameResourceManager {
return count;
}
Future<void> loadDeclaredTextureAtlases(GamePackageManifest manifest) async {
final activePackage = _package;
if (activePackage == null) {
return;
}
for (final entry in manifest.resources.entries) {
final resource = entry.value;
final atlas = resource.atlas;
if (resource.type != GameResourceType.image || atlas == null) {
continue;
}
final imagePath = activePackage.resolveResourcePath(entry.key);
final atlasPath = activePackage.resolveResourcePath(atlas);
final source = await activePackage.readText(atlasPath);
_textureAtlases[imagePath] = RuntimeTextureAtlas.fromJsonString(source);
}
}
Future<void> preloadDeclaredImages(GamePackageManifest manifest) async {
final futures = <Future<void>>[];
for (final entry in manifest.resources.entries) {
@@ -254,6 +288,100 @@ class GameResourceManager {
}
}
class RuntimeTextureAtlas {
const RuntimeTextureAtlas({required this.frames});
final Map<String, RuntimeTextureFrame> frames;
factory RuntimeTextureAtlas.fromJsonString(String source) {
final value = jsonDecode(source);
if (value is! Map) {
throw const FormatException('Texture atlas JSON must be an object');
}
final framesValue = value['frames'];
final frames = <String, RuntimeTextureFrame>{};
if (framesValue is Map) {
for (final entry in framesValue.entries) {
if (entry.key is! String || entry.value is! Map) {
throw const FormatException('Texture atlas frames must be objects');
}
frames[entry.key as String] = RuntimeTextureFrame.fromMap(
Map<String, Object?>.from(entry.value as Map),
);
}
} else if (framesValue is List) {
for (final item in framesValue) {
if (item is! Map) {
throw const FormatException('Texture atlas frames must be objects');
}
final map = Map<String, Object?>.from(item);
final filename = map['filename'];
if (filename is! String || filename.isEmpty) {
throw const FormatException(
'Texture atlas array frames require filename',
);
}
frames[filename] = RuntimeTextureFrame.fromMap(map);
}
} else {
throw const FormatException('Texture atlas frames must be a map or list');
}
return RuntimeTextureAtlas(frames: frames);
}
}
class RuntimeTextureFrame {
const RuntimeTextureFrame({
required this.x,
required this.y,
required this.width,
required this.height,
});
final double x;
final double y;
final double width;
final double height;
ui.Rect get rect => ui.Rect.fromLTWH(x, y, width, height);
factory RuntimeTextureFrame.fromMap(Map<String, Object?> map) {
final rotated = map['rotated'];
if (rotated == true) {
throw const FormatException(
'Rotated TexturePacker frames are unsupported',
);
}
final frame = map['frame'];
if (frame is! Map) {
throw const FormatException('TexturePacker frame must be an object');
}
final frameMap = Map<String, Object?>.from(frame);
return RuntimeTextureFrame(
x: _number(frameMap, 'x'),
y: _number(frameMap, 'y'),
width: _positiveNumber(frameMap, 'w'),
height: _positiveNumber(frameMap, 'h'),
);
}
static double _number(Map<String, Object?> map, String key) {
final value = map[key];
if (value is num) {
return value.toDouble();
}
throw FormatException('TexturePacker frame.$key must be a number');
}
static double _positiveNumber(Map<String, Object?> map, String key) {
final value = _number(map, key);
if (value <= 0) {
throw FormatException('TexturePacker frame.$key must be > 0');
}
return value;
}
}
enum GameResourceState { idle, loading, ready, failed, disposed }
class ResourceLoadException implements Exception {

29
test/runtime/models/runtime_node_test.dart
View File

@@ -10,6 +10,9 @@ void main() {
'type': 'button',
'parent': 'top_bar',
'asset': 'dice_normal',
'frame': 'dice_idle.png',
'pressedFrame': 'dice_pressed.png',
'disabledFrame': 'dice_disabled.png',
'sourceX': 4,
'sourceY': 5,
'sourceWidth': 64,
@@ -80,6 +83,9 @@ void main() {
expect(node.type, 'button');
expect(node.parent, 'top_bar');
expect(node.asset, 'dice_normal');
expect(node.frame, 'dice_idle.png');
expect(node.pressedFrame, 'dice_pressed.png');
expect(node.disabledFrame, 'dice_disabled.png');
expect(node.sourceX, 4);
expect(node.sourceY, 5);
expect(node.sourceWidth, 64);
@@ -163,6 +169,9 @@ void main() {
expect(node.textShadowOffsetX, isNull);
expect(node.textShadowOffsetY, isNull);
expect(node.textShadowBlur, isNull);
expect(node.frame, isNull);
expect(node.pressedFrame, isNull);
expect(node.disabledFrame, isNull);
expect(node.sourceX, isNull);
expect(node.sourceY, isNull);
expect(node.sourceWidth, isNull);
@@ -210,6 +219,9 @@ void main() {
'sourceY': 4,
'sourceWidth': 40,
'sourceHeight': 41,
'frame': 'piece.png',
'pressedFrame': 'piece_down.png',
'disabledFrame': 'piece_disabled.png',
'sliceLeft': 5,
'sliceTop': 6,
'sliceRight': 7,
@@ -249,6 +261,9 @@ void main() {
expect(updated.sourceY, 4);
expect(updated.sourceWidth, 40);
expect(updated.sourceHeight, 41);
expect(updated.frame, 'piece.png');
expect(updated.pressedFrame, 'piece_down.png');
expect(updated.disabledFrame, 'piece_disabled.png');
expect(updated.sliceLeft, 5);
expect(updated.sliceTop, 6);
expect(updated.sliceRight, 7);
@@ -296,19 +311,13 @@ void main() {
throwsFormatException,
);
expect(
() => RuntimeNode.fromMap({
'id': 'a',
'type': 'image',
'sourceWidth': 0,
}),
() =>
RuntimeNode.fromMap({'id': 'a', 'type': 'image', 'sourceWidth': 0}),
throwsFormatException,
);
expect(
() => RuntimeNode.fromMap({
'id': 'a',
'type': 'image',
'sliceLeft': -1,
}),
() =>
RuntimeNode.fromMap({'id': 'a', 'type': 'image', 'sliceLeft': -1}),
throwsFormatException,
);
expect(

2
test/runtime/packages/game_package_manifest_test.dart
View File

@@ -26,6 +26,7 @@ void main() {
'board': {
'type': 'image',
'path': 'assets/board.png',
'atlas': 'assets/board.json',
'preload': 'lazy',
'group': 'board',
},
@@ -53,6 +54,7 @@ void main() {
expect(manifest.display.scaleMode, 'fit');
expect(manifest.resources['board']?.type, 'image');
expect(manifest.resources['board']?.path, 'assets/board.png');
expect(manifest.resources['board']?.atlas, 'assets/board.json');
expect(manifest.resources['board']?.preload, GameResourcePreload.lazy);
expect(manifest.resources['board']?.group, 'board');
expect(manifest.resources['roll']?.type, GameResourceType.audio);

91
test/runtime/resources/game_resource_manager_test.dart
View File

@@ -1,6 +1,7 @@
import 'dart:async' as async;
import 'dart:io';
import 'dart:typed_data';
import 'dart:ui' show Rect;
import 'package:flame_lua_runtime/runtime/diagnostics/runtime_diagnostics.dart';
import 'package:flame_lua_runtime/runtime/packages/game_package.dart';
@@ -61,6 +62,19 @@ void main() {
},
);
test('loads TexturePacker atlas frames for image resources', () async {
final resources = GameResourceManager();
final package = await _createTextureAtlasPackage('texture_atlas');
await resources.mount(package);
final idle = resources.textureFrame('ui', 'button_idle.png');
final pressed = resources.textureFrame('ui', 'button_pressed.png');
expect(idle?.rect, Rect.fromLTWH(2, 3, 40, 20));
expect(pressed?.rect, Rect.fromLTWH(44, 3, 40, 20));
expect(resources.textureFrame('ui', 'missing.png'), isNull);
});
test('exports image debug json and evicts failed records', () async {
final resources = GameResourceManager();
final package = await _createPackage('debug_json');
@@ -332,6 +346,83 @@ Future<GamePackage> _createPackage(
);
}
Future<GamePackage> _createTextureAtlasPackage(String name) async {
final root = await Directory.systemTemp.createTemp('resource_${name}_');
Directory('${root.path}/assets').createSync(recursive: true);
File('${root.path}/assets/ui.png').writeAsBytesSync(_pngBytes);
File('${root.path}/assets/ui.json').writeAsStringSync('''
{
"frames": {
"button_idle.png": {
"frame": { "x": 2, "y": 3, "w": 40, "h": 20 },
"rotated": false,
"trimmed": false
}
}
}
''');
addTearDown(() {
if (root.existsSync()) {
root.deleteSync(recursive: true);
}
});
final hashAtlas = RuntimeTextureAtlas.fromJsonString(
File('${root.path}/assets/ui.json').readAsStringSync(),
);
expect(hashAtlas.frames['button_idle.png']?.rect, Rect.fromLTWH(2, 3, 40, 20));
final arrayAtlas = RuntimeTextureAtlas.fromJsonString('''
{
"frames": [
{
"filename": "button_pressed.png",
"frame": { "x": 44, "y": 3, "w": 40, "h": 20 },
"rotated": false,
"trimmed": false
}
]
}
''');
final mergedAtlas = '''
{
"frames": {
"button_idle.png": {
"frame": { "x": 2, "y": 3, "w": 40, "h": 20 },
"rotated": false,
"trimmed": false
},
"button_pressed.png": {
"frame": { "x": ${arrayAtlas.frames['button_pressed.png']!.x}, "y": 3, "w": 40, "h": 20 },
"rotated": false,
"trimmed": false
}
}
}
''';
File('${root.path}/assets/ui.json').writeAsStringSync(mergedAtlas);
return GamePackage.file(
rootPath: root.path,
manifest: GamePackageManifest(
gameId: 'test',
name: 'Test',
version: '0.1.0',
runtimeApiVersion: 1,
entry: 'scripts/main.lua',
assetsBase: 'assets',
resources: const {
'ui': GameResource(
type: GameResourceType.image,
path: 'assets/ui.png',
atlas: 'assets/ui.json',
preload: GameResourcePreload.lazy,
),
},
),
);
}
Future<GamePackage> _createMultiImagePackage(String name) async {
final root = await Directory.systemTemp.createTemp('resource_${name}_');
Directory('${root.path}/assets').createSync(recursive: true);

6
tool/lua_runtime_defs_common.lua
View File

@@ -86,6 +86,9 @@
---@field type RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.
@@ -155,6 +158,9 @@
---@field type? RuntimeNodeType
---@field parent? string
---@field asset? string Normal image/sprite/spine asset key. For button nodes this is the normal-state image.
---@field frame? string TexturePacker frame name within the asset atlas.
---@field pressedFrame? string Button pressed-state TexturePacker frame name.
---@field disabledFrame? string Button disabled-state TexturePacker frame name.
---@field sourceX? number Source atlas region x in image pixels.
---@field sourceY? number Source atlas region y in image pixels.
---@field sourceWidth? number Source atlas region width in image pixels.