diff --git a/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/JsonRollback.java b/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/JsonRollback.java
index e597ef48b..ae145ebd0 100644
--- a/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/JsonRollback.java
+++ b/spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/JsonRollback.java
@@ -33,10 +33,12 @@ import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.Json;
import com.badlogic.gdx.utils.JsonValue;
+import com.badlogic.gdx.utils.JsonValue.ValueType;
import com.badlogic.gdx.utils.JsonWriter.OutputType;
-/** Takes Spine JSON data and transforms it to work with an older version of Spine. It supports going from version 3.3.xx to
- * 2.1.27.
+/** Takes Spine JSON data and transforms it to work with an older version of Spine. Target versions:
+ * 2.1: supports going from version 3.3.xx to 2.1.27.
+ * 3.7: supports going from version 3.8.xx to 3.7.94.
*
* Data can be exported from a Spine project, processed with JsonRollback, then imported into an older version of Spine. However,
* JsonRollback may remove data for features not supported by the older Spine version. Because of this, JsonRollback is only
@@ -47,67 +49,109 @@ import com.badlogic.gdx.utils.JsonWriter.OutputType;
* the runtime is updated to support a newer Spine version should animators update their Spine editor version to match. */
public class JsonRollback {
static public void main (String[] args) throws Exception {
- if (args.length == 0) {
- System.out.println("Usage: [outputFile]");
+ if (args.length != 2 && args.length != 3) {
+ System.out.println("Usage: [outputFile]");
+ System.exit(0);
+ }
+
+ String version = args[1];
+ if (!version.equals("2.1") && !version.equals("3.7")) {
+ System.out.println("ERROR: Target version must be: 2.1 or 3.7");
+ System.out.println("Usage: [outputFile]");
System.exit(0);
}
JsonValue root = new Json().fromJson(null, new FileHandle(args[0]));
- // In 3.2 skinnedmesh was renamed to weightedmesh.
- setValue(root, "skinnedmesh", "skins", "*", "*", "*", "type", "weightedmesh");
+ if (version.equals("2.1")) {
+ // In 3.2 skinnedmesh was renamed to weightedmesh.
+ setValue(root, "skinnedmesh", "skins", "*", "*", "*", "type", "weightedmesh");
- // In 3.2 shear was added.
- delete(root, "animations", "*", "bones", "*", "shear");
+ // In 3.2 shear was added.
+ delete(root, "animations", "*", "bones", "*", "shear");
- // In 3.3 ffd was renamed to deform.
- rename(root, "ffd", "animations", "*", "deform");
+ // In 3.3 ffd was renamed to deform.
+ rename(root, "ffd", "animations", "*", "deform");
- // In 3.3 mesh is now a single type, previously they were skinnedmesh if they had weights.
- for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "mesh"))
- if (value.parent.get("uvs").size != value.parent.get("vertices").size) value.set("skinnedmesh");
+ // In 3.3 mesh is now a single type, previously they were skinnedmesh if they had weights.
+ for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "mesh"))
+ if (value.parent.get("uvs").size != value.parent.get("vertices").size) value.set("skinnedmesh");
- // In 3.3 linkedmesh is now a single type, previously they were linkedweightedmesh if they had weights.
- for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "linkedmesh")) {
- String slot = value.parent.parent.name.replaceAll("", "");
- String skinName = value.parent.getString("skin", "default");
- String parentName = value.parent.getString("parent");
- if (find(root, new Array(), 0,
- ("skins~~" + skinName + "~~" + slot + "~~" + parentName + "~~type~~skinnedmesh").split("~~")).size > 0)
- value.set("weightedlinkedmesh");
+ // In 3.3 linkedmesh is now a single type, previously they were linkedweightedmesh if they had weights.
+ for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "linkedmesh")) {
+ String slot = value.parent.parent.name.replaceAll("", "");
+ String skinName = value.parent.getString("skin", "default");
+ String parentName = value.parent.getString("parent");
+ if (find(root, new Array(), 0,
+ ("skins~~" + skinName + "~~" + slot + "~~" + parentName + "~~type~~skinnedmesh").split("~~")).size > 0)
+ value.set("weightedlinkedmesh");
+ }
+
+ // In 3.3 bounding boxes can be weighted.
+ for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "boundingbox"))
+ if (value.parent.getInt("vertexCount") * 2 != value.parent.get("vertices").size)
+ value.parent.parent.remove(value.parent.name);
+
+ // In 3.3 paths were added.
+ for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "path")) {
+ String attachment = value.parent.name;
+ value.parent.parent.remove(attachment);
+ String slot = value.parent.parent.name;
+ // Also remove path deform timelines.
+ delete(root, "animations", "*", "ffd", "*", slot, attachment);
+ }
+
+ // In 3.3 IK constraint timelines no longer require bendPositive.
+ for (JsonValue value : find(root, new Array(), 0, "animations", "*", "ik", "*"))
+ for (JsonValue child = value.child; child != null; child = child.next)
+ if (!child.has("bendPositive")) child.addChild("bendPositive", new JsonValue(true));
+
+ // In 3.3 transform constraints can have more than 1 bone.
+ for (JsonValue child = root.getChild("transform"); child != null; child = child.next) {
+ JsonValue bones = child.remove("bones");
+ if (bones != null) child.addChild("bone", new JsonValue(bones.child.asString()));
+ }
+ } else if (version.equals("3.7")) {
+ JsonValue skins = root.get("skins");
+ if (skins != null && skins.isArray()) {
+ JsonValue newSkins = new JsonValue(ValueType.object);
+ for (JsonValue skinMap = skins.child; skinMap != null; skinMap = skinMap.next) {
+ JsonValue newSkin = skinMap.get("attachments");
+ newSkins.addChild(skinMap.getString("name"), newSkin);
+ }
+ root.remove("skins");
+ root.addChild("skins", newSkins);
+ }
+
+ rollbackCurves(root.get("animations"));
}
- // In 3.3 bounding boxes can be weighted.
- for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "boundingbox"))
- if (value.parent.getInt("vertexCount") * 2 != value.parent.get("vertices").size)
- value.parent.parent.remove(value.parent.name);
-
- // In 3.3 paths were added.
- for (JsonValue value : find(root, new Array(), 0, "skins", "*", "*", "*", "type", "path")) {
- String attachment = value.parent.name;
- value.parent.parent.remove(attachment);
- String slot = value.parent.parent.name;
- // Also remove path deform timelines.
- delete(root, "animations", "*", "ffd", "*", slot, attachment);
- }
-
- // In 3.3 IK constraint timelines no longer require bendPositive.
- for (JsonValue value : find(root, new Array(), 0, "animations", "*", "ik", "*"))
- for (JsonValue child = value.child; child != null; child = child.next)
- if (!child.has("bendPositive")) child.addChild("bendPositive", new JsonValue(true));
-
- // In 3.3 transform constraints can have more than 1 bone.
- for (JsonValue child = root.getChild("transform"); child != null; child = child.next) {
- JsonValue bones = child.remove("bones");
- if (bones != null) child.addChild("bone", new JsonValue(bones.child.asString()));
- }
-
- if (args.length > 1)
- new FileHandle(args[1]).writeString(root.prettyPrint(OutputType.json, 130), false, "UTF-8");
+ if (args.length == 3)
+ new FileHandle(args[2]).writeString(root.prettyPrint(OutputType.json, 130), false, "UTF-8");
else
System.out.println(root.prettyPrint(OutputType.json, 130));
}
+ static private void rollbackCurves (JsonValue map) {
+ if (map == null) return;
+ JsonValue curve = map.get("curve");
+ if (curve == null) {
+ for (map = map.child; map != null; map = map.next)
+ rollbackCurves(map);
+ return;
+ }
+ if (curve.isNumber()) {
+ curve.addChild(new JsonValue(curve.asFloat()));
+ curve.setType(ValueType.array);
+ curve.addChild(new JsonValue(map.getFloat("c2", 0)));
+ curve.addChild(new JsonValue(map.getFloat("c3", 0)));
+ curve.addChild(new JsonValue(map.getFloat("c4", 0)));
+ map.remove("c2");
+ map.remove("c3");
+ map.remove("c4");
+ }
+ }
+
static void setValue (JsonValue root, String newValue, String... path) {
for (JsonValue value : find(root, new Array(), 0, path))
value.set(newValue);