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[libgdx] JsonRollback, added limited support for 4.0.xx to 3.8.99.

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This commit is contained in:
Nathan Sweet 2021-01-06 18:54:20 -08:00
parent 12d83571ae
commit ec14789c02
1 changed files with 72 additions and 6 deletions
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78
spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/JsonRollback.java
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@ -29,6 +29,8 @@
package com.esotericsoftware.spine;
import java.io.BufferedWriter;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.Json;
@ -38,7 +40,9 @@ import com.badlogic.gdx.utils.JsonWriter.OutputType;
/** Takes Spine JSON data and transforms it to work with an older version of Spine. Target versions:<br>
* 2.1: supports going from version 3.3.xx to 2.1.27.<br>
* 3.7: supports going from version 3.8.xx to 3.7.94.
* 3.7: supports going from version 3.8.xx to 3.7.94.<br>
* 3.8: supports going from version 4.0.xx to 3.8.99 (all curves become linear, separate timelines are lost, constraint translate
* Y and shear Y are lost).
* <p>
* 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
@ -55,8 +59,8 @@ public class JsonRollback {
}
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");
if (!version.equals("2.1") && !version.equals("3.7") && !version.equals("3.8")) {
System.out.println("ERROR: Target version must be: 2.1, 3.7, or 3.8");
System.out.println("Usage: <inputFile> <toVersion> [outputFile]");
System.exit(0);
}
@ -124,14 +128,76 @@ public class JsonRollback {
}
rollbackCurves(root.get("animations"));
} else if (version.equals("3.8")) {
linearCurves(root.get("animations"));
rename(root, "angle", "animations", "*", "bones", "*", "rotate", "value");
constraintNames(root, "transform");
constraintNames(root, "path");
constraintNames(root, "animations", "*", "transform", "*");
constraintNames(root, "animations", "*", "path", "*");
}
if (args.length == 3)
new FileHandle(args[2]).writeString(root.prettyPrint(OutputType.json, 130), false, "UTF-8");
else
if (args.length == 3) {
BufferedWriter fileWriter = new BufferedWriter(new FileHandle(args[2]).writer(false, "UTF-8"), 16 * 1024);
root.prettyPrint(OutputType.json, fileWriter);
fileWriter.close();
} else
System.out.println(root.prettyPrint(OutputType.json, 130));
}
static private void log (String message) {
System.out.println(message);
}
static private void constraintNames (JsonValue root, String... path) {
for (JsonValue map : find(root, new Array<JsonValue>(), 0, path)) {
for (JsonValue constraint = map.child; constraint != null; constraint = constraint.next) {
for (JsonValue child = constraint.child; child != null; child = child.next) {
if (child.name.equals("mixRotate"))
child.name = "rotateMix";
else if (child.name.equals("mixX") || child.name.equals("mixY"))
child.name = "translateMix";
else if (child.name.equals("mixScaleX") || child.name.equals("mixScaleY")) {
child.name = "scaleMix";
} else if (child.name.equals("mixShearX") || child.name.equals("mixShearY")) //
child.name = "shearMix";
}
}
}
}
static private void linearCurves (JsonValue map) {
if (map == null) return;
if (map.isObject() && map.parent.isArray()) { // Probably a key.
if (map.parent.name != null) {
String name = map.parent.name;
if (name.equals("translatex") || name.equals("translatey") //
|| name.equals("scalex") || name.equals("scaley") //
|| name.equals("shearx") || name.equals("sheary") //
|| name.equals("rgb") || name.equals("rgb2") || name.equals("alpha")) {
map.parent.remove();
log("Separate timelines removed: " + name);
}
if (name.equals("rgba"))
map.parent.name = "color";
else if (name.equals("rgba")) //
map.parent.name = "twoColor";
}
}
JsonValue curve = map.get("curve");
if (curve == null) {
for (JsonValue child = map.child; child != null; child = child.next)
linearCurves(child);
return;
}
if (!curve.isString()) {
curve.remove();
log("Bezier curve changed to linear.");
}
}
static private void rollbackCurves (JsonValue map) {
if (map == null) return;