mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2025-12-21 17:56:04 +08:00
91 lines
3.3 KiB
Dart
91 lines
3.3 KiB
Dart
///
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/// Spine Runtimes License Agreement
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/// Last updated April 5, 2025. Replaces all prior versions.
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///
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/// Copyright (c) 2013-2025, Esoteric Software LLC
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///
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/// Integration of the Spine Runtimes into software or otherwise creating
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/// derivative works of the Spine Runtimes is permitted under the terms and
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/// conditions of Section 2 of the Spine Editor License Agreement:
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/// http://esotericsoftware.com/spine-editor-license
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///
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/// Otherwise, it is permitted to integrate the Spine Runtimes into software
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/// or otherwise create derivative works of the Spine Runtimes (collectively,
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/// "Products"), provided that each user of the Products must obtain their own
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/// Spine Editor license and redistribution of the Products in any form must
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/// include this license and copyright notice.
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///
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/// THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
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/// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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/// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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/// DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
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/// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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/// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
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/// BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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/// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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/// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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/// THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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///
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import 'package:spine_flutter/spine_flutter.dart';
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import 'package:flutter/material.dart';
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class IkFollowing extends StatefulWidget {
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const IkFollowing({Key? key}) : super(key: key);
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@override
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IkFollowingState createState() => IkFollowingState();
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}
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class IkFollowingState extends State<IkFollowing> {
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late SpineWidgetController controller;
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Offset? crossHairPosition;
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@override
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void initState() {
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super.initState();
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controller = SpineWidgetController(
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onInitialized: (controller) {
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// Set the walk animation on track 0, let it loop
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controller.animationState.setAnimation(0, "walk", true);
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controller.animationState.setAnimation(1, "aim", true);
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},
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onAfterUpdateWorldTransforms: (controller) {
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final worldPosition = crossHairPosition;
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if (worldPosition == null) return;
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final bone = controller.skeleton.findBone("crosshair")!;
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final parent = bone.parent;
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if (parent != null) {
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final position = parent.appliedPose.worldToLocal(worldPosition.dx, worldPosition.dy);
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bone.appliedPose.x = position.x;
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bone.appliedPose.y = position.y;
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}
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},
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);
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}
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void _updateBonePosition(Offset position) {
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crossHairPosition = controller.toSkeletonCoordinates(position);
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}
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@override
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Widget build(BuildContext context) {
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reportLeaks();
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return Scaffold(
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appBar: AppBar(title: const Text('IK Following')),
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body: GestureDetector(
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onPanDown: (drag) => _updateBonePosition(drag.localPosition),
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onPanUpdate: (drag) => _updateBonePosition(drag.localPosition),
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child: SpineWidget.fromAsset(
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"assets/spineboy.atlas",
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"assets/spineboy-pro.skel",
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controller,
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alignment: Alignment.centerLeft,
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),
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),
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);
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}
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}
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