[libgdx] Wrap System.arraycopy for exceptions with more context.

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java

@@ -31,6 +31,7 @@ package com.esotericsoftware.spine;
 
 import static com.esotericsoftware.spine.Animation.MixBlend.*;
 import static com.esotericsoftware.spine.Animation.MixDirection.*;
+import static com.esotericsoftware.spine.utils.SpineUtils.*;
 
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.math.MathUtils;
@@ -1067,7 +1068,7 @@ public class Animation {
 						}
 					} else {
 						// Vertex positions or deform offsets, no alpha.
-						System.arraycopy(lastVertices, 0, deform, 0, vertexCount);
+						arraycopy(lastVertices, 0, deform, 0, vertexCount);
 					}
 				} else {
 					switch (blend) {
@@ -1299,13 +1300,13 @@ public class Animation {
 			Array<Slot> drawOrder = skeleton.drawOrder;
 			Array<Slot> slots = skeleton.slots;
 			if (direction == out && blend == setup) {
-				System.arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
+				arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
 				return;
 			}
 
 			float[] frames = this.frames;
 			if (time < frames[0]) { // Time is before first frame.
-				if (blend == setup || blend == first) System.arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
+				if (blend == setup || blend == first) arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
 				return;
 			}
 
@@ -1317,7 +1318,7 @@ public class Animation {
 
 			int[] drawOrderToSetupIndex = drawOrders[frame];
 			if (drawOrderToSetupIndex == null)
-				System.arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
+				arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
 			else {
 				for (int i = 0, n = drawOrderToSetupIndex.length; i < n; i++)
 					drawOrder.set(i, slots.get(drawOrderToSetupIndex[i]));

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Skeleton.java

@@ -448,7 +448,7 @@ public class Skeleton {
 	/** Sets the slots and draw order to their setup pose values. */
 	public void setSlotsToSetupPose () {
 		Array<Slot> slots = this.slots;
-		System.arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
+		arraycopy(slots.items, 0, drawOrder.items, 0, slots.size);
 		for (int i = 0, n = slots.size; i < n; i++)
 			slots.get(i).setToSetupPose();
 	}

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/SkeletonJson.java

@@ -29,6 +29,8 @@
 
 package com.esotericsoftware.spine;
 
+import static com.esotericsoftware.spine.utils.SpineUtils.*;
+
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas;
@@ -38,6 +40,7 @@ import com.badlogic.gdx.utils.IntArray;
 import com.badlogic.gdx.utils.JsonReader;
 import com.badlogic.gdx.utils.JsonValue;
 import com.badlogic.gdx.utils.SerializationException;
+
 import com.esotericsoftware.spine.Animation.AttachmentTimeline;
 import com.esotericsoftware.spine.Animation.ColorTimeline;
 import com.esotericsoftware.spine.Animation.CurveTimeline;
@@ -702,7 +705,7 @@ public class SkeletonJson {
 						else {
 							deform = new float[deformLength];
 							int start = valueMap.getInt("offset", 0);
-							System.arraycopy(verticesValue.asFloatArray(), 0, deform, start, verticesValue.size);
+							arraycopy(verticesValue.asFloatArray(), 0, deform, start, verticesValue.size);
 							if (scale != 1) {
 								for (int i = start, n = i + verticesValue.size; i < n; i++)
 									deform[i] *= scale;

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/attachments/MeshAttachment.java

@@ -29,6 +29,8 @@
 
 package com.esotericsoftware.spine.attachments;
 
+import static com.esotericsoftware.spine.utils.SpineUtils.*;
+
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas.AtlasRegion;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
@@ -242,17 +244,17 @@ public class MeshAttachment extends VertexAttachment {
 
 		copyTo(copy);
 		copy.regionUVs = new float[regionUVs.length];
-		System.arraycopy(regionUVs, 0, copy.regionUVs, 0, regionUVs.length);
+		arraycopy(regionUVs, 0, copy.regionUVs, 0, regionUVs.length);
 		copy.uvs = new float[uvs.length];
-		System.arraycopy(uvs, 0, copy.uvs, 0, uvs.length);
+		arraycopy(uvs, 0, copy.uvs, 0, uvs.length);
 		copy.triangles = new short[triangles.length];
-		System.arraycopy(triangles, 0, copy.triangles, 0, triangles.length);
+		arraycopy(triangles, 0, copy.triangles, 0, triangles.length);
 		copy.hullLength = hullLength;
 
 		// Nonessential.
 		if (edges != null) {
 			copy.edges = new short[edges.length];
-			System.arraycopy(edges, 0, copy.edges, 0, edges.length);
+			arraycopy(edges, 0, copy.edges, 0, edges.length);
 		}
 		copy.width = width;
 		copy.height = height;

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/attachments/PathAttachment.java

@@ -29,7 +29,10 @@
 
 package com.esotericsoftware.spine.attachments;
 
+import static com.esotericsoftware.spine.utils.SpineUtils.*;
+
 import com.badlogic.gdx.graphics.Color;
+
 import com.esotericsoftware.spine.PathConstraint;
 
 /** An attachment whose vertices make up a composite Bezier curve.
@@ -84,7 +87,7 @@ public class PathAttachment extends VertexAttachment {
 		PathAttachment copy = new PathAttachment(name);
 		copyTo(copy);
 		copy.lengths = new float[lengths.length];
-		System.arraycopy(lengths, 0, copy.lengths, 0, lengths.length);
+		arraycopy(lengths, 0, copy.lengths, 0, lengths.length);
 		copy.closed = closed;
 		copy.constantSpeed = constantSpeed;
 		copy.color.set(color);

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/attachments/RegionAttachment.java

@@ -29,10 +29,13 @@
 
 package com.esotericsoftware.spine.attachments;
 
+import static com.esotericsoftware.spine.utils.SpineUtils.*;
+
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.g2d.TextureAtlas.AtlasRegion;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
 import com.badlogic.gdx.math.MathUtils;
+
 import com.esotericsoftware.spine.Bone;
 
 /** An attachment that displays a textured quadrilateral.
@@ -275,8 +278,8 @@ public class RegionAttachment extends Attachment {
 		copy.rotation = rotation;
 		copy.width = width;
 		copy.height = height;
-		System.arraycopy(uvs, 0, copy.uvs, 0, 8);
+		arraycopy(uvs, 0, copy.uvs, 0, 8);
-		System.arraycopy(offset, 0, copy.offset, 0, 8);
+		arraycopy(offset, 0, copy.offset, 0, 8);
 		copy.color.set(color);
 		return copy;
 	}

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/attachments/VertexAttachment.java

@@ -29,7 +29,10 @@
 
 package com.esotericsoftware.spine.attachments;
 
+import static com.esotericsoftware.spine.utils.SpineUtils.*;
+
 import com.badlogic.gdx.utils.FloatArray;
+
 import com.esotericsoftware.spine.Bone;
 import com.esotericsoftware.spine.Skeleton;
 import com.esotericsoftware.spine.Slot;
@@ -170,13 +173,13 @@ abstract public class VertexAttachment extends Attachment {
 	void copyTo (VertexAttachment attachment) {
 		if (bones != null) {
 			attachment.bones = new int[bones.length];
-			System.arraycopy(bones, 0, attachment.bones, 0, bones.length);
+			arraycopy(bones, 0, attachment.bones, 0, bones.length);
 		} else
 			attachment.bones = null;
 
 		if (vertices != null) {
 			attachment.vertices = new float[vertices.length];
-			System.arraycopy(vertices, 0, attachment.vertices, 0, vertices.length);
+			arraycopy(vertices, 0, attachment.vertices, 0, vertices.length);
 		} else
 			attachment.vertices = null;
 

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/utils/SpineUtils.java

@@ -56,4 +56,17 @@ public class SpineUtils {
 	public static float atan2 (float y, float x) {
 		return (float)Math.atan2(y, x);
 	}
+
+	static public void arraycopy (Object src, int srcPos, Object dest, int destPos, int length) {
+		if (src == null) throw new IllegalArgumentException("src cannot be null.");
+		if (dest == null) throw new IllegalArgumentException("dest cannot be null.");
+		try {
+			System.arraycopy(src, srcPos, dest, destPos, length);
+		} catch (ArrayIndexOutOfBoundsException ex) {
+			throw new ArrayIndexOutOfBoundsException( //
+				"Src: " + java.lang.reflect.Array.getLength(src) + ", " + srcPos //
+					+ ", dest: " + java.lang.reflect.Array.getLength(dest) + ", " + destPos //
+					+ ", count: " + length);
+		}
+	}
 }

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/utils/TwoColorPolygonBatch.java

@@ -29,6 +29,8 @@
 
 package com.esotericsoftware.spine.utils;
 
+import static com.esotericsoftware.spine.utils.SpineUtils.*;
+
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.GL20;
@@ -754,7 +756,7 @@ public class TwoColorPolygonBatch implements PolygonBatch {
 			triangles[triangleIndex++] = (short)(polygonTriangles[i] + startVertex);
 		this.triangleIndex = triangleIndex;
 
-		System.arraycopy(polygonVertices, verticesOffset, vertices, vertexIndex, verticesCount);
+		arraycopy(polygonVertices, verticesOffset, vertices, vertexIndex, verticesCount);
 		this.vertexIndex += verticesCount;
 	}
 
@@ -821,7 +823,7 @@ public class TwoColorPolygonBatch implements PolygonBatch {
 		}
 		this.triangleIndex = triangleIndex;
 
-		System.arraycopy(spriteVertices, offset, vertices, vertexIndex, count);
+		arraycopy(spriteVertices, offset, vertices, vertexIndex, count);
 		this.vertexIndex += count;
 	}