[libgdx] Add dragon sequence smoke test.

see #2989

examples/export/runtimes.sh

@@ -36,6 +36,12 @@ cp -f ../spineboy/export/*.json "$ROOT/spine-libgdx/spine-libgdx-tests/assets/sp
 cp -r ../spineboy/export/*.skel "$ROOT/spine-libgdx/spine-libgdx-tests/assets/spineboy/"
 cp -r ../spineboy/export/*-pma.* "$ROOT/spine-libgdx/spine-libgdx-tests/assets/spineboy/"
 
+rm -f "$ROOT/spine-libgdx/spine-libgdx-tests/assets/dragon/"*
+mkdir -p "$ROOT/spine-libgdx/spine-libgdx-tests/assets/dragon/"
+cp -f ../dragon/export/*.skel "$ROOT/spine-libgdx/spine-libgdx-tests/assets/dragon/"
+cp -f ../dragon/export/dragon-pma.atlas "$ROOT/spine-libgdx/spine-libgdx-tests/assets/dragon/"
+cp -f ../dragon/export/dragon-pma*.png "$ROOT/spine-libgdx/spine-libgdx-tests/assets/dragon/"
+
 rm -f "$ROOT/spine-libgdx/spine-libgdx-tests/assets/coin/"*
 cp -f ../coin/export/*.json "$ROOT/spine-libgdx/spine-libgdx-tests/assets/coin/"
 cp -f ../coin/export/*.skel "$ROOT/spine-libgdx/spine-libgdx-tests/assets/coin/"

spine-libgdx/spine-libgdx-tests/assets/dragon/dragon-pma.atlas

@@ -0,0 +1,114 @@
+dragon-pma.png
+	size: 1024, 1024
+	filter: Linear, Linear
+	pma: true
+front-toe-a
+	bounds: 300, 929, 29, 50
+front-toe-b
+	bounds: 258, 660, 56, 57
+head
+	bounds: 2, 719, 296, 260
+left-front-leg
+	bounds: 99, 660, 84, 57
+left-wing09
+	bounds: 2, 15, 264, 589
+	rotate: 90
+right-wing07
+	bounds: 647, 2, 365, 643
+right-wing08
+	bounds: 2, 281, 365, 643
+	rotate: 90
+right-wing09
+	bounds: 354, 647, 365, 643
+	rotate: 90
+tail04
+	bounds: 185, 661, 56, 71
+	rotate: 90
+tail06
+	bounds: 2, 649, 95, 68
+thiagobrayner
+	bounds: 2, 981, 350, 31
+
+dragon-pma_2.png
+	size: 1024, 1024
+	filter: Linear, Linear
+	pma: true
+back
+	bounds: 647, 57, 190, 185
+chin
+	bounds: 839, 28, 214, 146
+	rotate: 90
+left-rear-leg
+	bounds: 736, 244, 206, 177
+left-wing08
+	bounds: 736, 423, 264, 589
+right-rear-toe
+	bounds: 944, 312, 109, 77
+	rotate: 90
+right-wing04
+	bounds: 2, 2, 365, 643
+	rotate: 90
+right-wing05
+	bounds: 369, 369, 365, 643
+right-wing06
+	bounds: 2, 369, 365, 643
+tail03
+	bounds: 647, 275, 73, 92
+tail05
+	bounds: 944, 251, 52, 59
+
+dragon-pma_3.png
+	size: 1024, 1024
+	filter: Linear, Linear
+	pma: true
+chest
+	bounds: 858, 299, 136, 122
+left-front-thigh
+	bounds: 647, 295, 84, 72
+left-rear-thigh
+	bounds: 647, 117, 91, 149
+left-wing07
+	bounds: 736, 423, 264, 589
+right-front-leg
+	bounds: 647, 14, 101, 89
+	rotate: 90
+right-front-thigh
+	bounds: 740, 158, 108, 108
+right-rear-leg
+	bounds: 740, 46, 116, 100
+right-rear-thigh
+	bounds: 858, 148, 91, 149
+right-wing01
+	bounds: 2, 2, 365, 643
+	rotate: 90
+right-wing02
+	bounds: 369, 369, 365, 643
+right-wing03
+	bounds: 2, 369, 365, 643
+tail01
+	bounds: 736, 268, 120, 153
+tail02
+	bounds: 858, 26, 95, 120
+
+dragon-pma_4.png
+	size: 1024, 1024
+	filter: Linear, Linear
+	pma: true
+left-wing03
+	bounds: 2, 2, 264, 589
+	rotate: 90
+left-wing04
+	bounds: 534, 268, 264, 589
+left-wing05
+	bounds: 268, 268, 264, 589
+left-wing06
+	bounds: 2, 268, 264, 589
+
+dragon-pma_5.png
+	size: 1024, 1024
+	filter: Linear, Linear
+	pma: true
+left-wing01
+	bounds: 268, 2, 264, 589
+left-wing02
+	bounds: 2, 2, 264, 589

spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/SequenceTest.java

@@ -0,0 +1,101 @@
+/******************************************************************************
+ * Spine Runtimes License Agreement
+ * Last updated April 5, 2025. Replaces all prior versions.
+ *
+ * Copyright (c) 2013-2025, Esoteric Software LLC
+ *
+ * Integration of the Spine Runtimes into software or otherwise creating
+ * derivative works of the Spine Runtimes is permitted under the terms and
+ * conditions of Section 2 of the Spine Editor License Agreement:
+ * http://esotericsoftware.com/spine-editor-license
+ *
+ * Otherwise, it is permitted to integrate the Spine Runtimes into software
+ * or otherwise create derivative works of the Spine Runtimes (collectively,
+ * "Products"), provided that each user of the Products must obtain their own
+ * Spine Editor license and redistribution of the Products in any form must
+ * include this license and copyright notice.
+ *
+ * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
+ * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+package com.esotericsoftware.spine;
+
+import com.badlogic.gdx.ApplicationAdapter;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.graphics.GL20;
+import com.badlogic.gdx.graphics.OrthographicCamera;
+import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
+import com.badlogic.gdx.graphics.g2d.TextureAtlas;
+
+/** Smoke test for sequence attachments using the Dragon example. Mirrors the old runtime Sequence example setup: dragon-ess.skel
+ * + dragon-pma.atlas + flying animation. */
+public class SequenceTest extends ApplicationAdapter {
+	OrthographicCamera camera;
+	PolygonSpriteBatch batch;
+	SkeletonRenderer renderer;
+
+	TextureAtlas atlas;
+	Skeleton skeleton;
+	AnimationState state;
+
+	public void create () {
+		camera = new OrthographicCamera();
+		camera.setToOrtho(false);
+		batch = new PolygonSpriteBatch();
+		renderer = new SkeletonRenderer();
+		renderer.setPremultipliedAlpha(true);
+
+		atlas = new TextureAtlas(Gdx.files.internal("dragon/dragon-pma.atlas"));
+		SkeletonBinary binary = new SkeletonBinary(atlas);
+		SkeletonData skeletonData = binary.readSkeletonData(Gdx.files.internal("dragon/dragon-ess.skel"));
+
+		skeleton = new Skeleton(skeletonData);
+		skeleton.setScale(0.6f, 0.6f);
+		skeleton.setPosition(Gdx.graphics.getWidth() / 2f, 120);
+
+		state = new AnimationState(new AnimationStateData(skeletonData));
+		state.setAnimation(0, "flying", true);
+	}
+
+	public void render () {
+		float delta = Gdx.graphics.getDeltaTime();
+		state.update(delta);
+		state.apply(skeleton);
+		skeleton.update(delta);
+		skeleton.updateWorldTransform(Physics.update);
+
+		Gdx.gl.glClearColor(0.5f, 0.5f, 0.5f, 1);
+		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
+
+		camera.update();
+		batch.getProjectionMatrix().set(camera.combined);
+
+		batch.begin();
+		renderer.draw(batch, skeleton);
+		batch.end();
+	}
+
+	public void resize (int width, int height) {
+		camera.setToOrtho(false);
+		skeleton.setPosition(width / 2f, 120);
+	}
+
+	public void dispose () {
+		atlas.dispose();
+		batch.dispose();
+	}
+
+	static public void main (String[] args) throws Exception {
+		new Lwjgl3Application(new SequenceTest());
+	}
+}