This script copies colliders, rigidbodies, scripts, animations, and character joints from an object hierarcy to an other hierarchy.
The child object names in the 2 hierarcy must be the same to copy. If the two hierarcy are not the same, it tries it anyway, but it will copy stuff only into objects that are the same name. The root object names can be different. It removes the components if copying of component type is allowed.
This script can be useful if you have a character with a script and character controller, and you upload a new model, and you just copy everything from old model to the new one.
Or if you have a fine-tuned rigidbody for one model, then you want to copy the rigidbody angles and joints and colliders into an other model.
It recognises relative transform/object/rigidbody in scripts and joints, so the connected body of the copy will be on the copy hierarcy, not at the original. (the copy neck connected body will point at the copy spine, not the original spine)
It doesn’t supports light, particles, hinge joint, mesh renderers etc… but you can build these in, i needed only at the state as it is now. Maybe i’ll update it later.
To setup: create an “Editor” folder in the project tab, make a new javascript, named “CopyComponents”, and put this code in it.
It is under the component/custom/copy components
I looked around and found no public script like this, i hope it will help others too 
everybody can use it, and modify it, no permission needed.
import System.Reflection;
class CopyComponents extends EditorWindow {
private var fromTrans:Transform;
private var toTrans:Transform;
var anims = false;
var physics = true;
var scripts = true;
private var errorMsg:String;
@MenuItem ("Component/Custom/Copy components")
static function Init () {
var window : CopyComponents = EditorWindow.GetWindow (CopyComponents);
window.Show ();
}
function OnGUI () {
EditorGUILayout.Space();
EditorGUILayout.Space();
fromTrans = EditorGUILayout.ObjectField("From: ",fromTrans,Transform);
toTrans = EditorGUILayout.ObjectField("To: ",toTrans,Transform);
EditorGUILayout.Space();
EditorGUILayout.BeginHorizontal ();
GUILayout.Label ("With animations");
anims = EditorGUILayout.Toggle (anims);
EditorGUILayout.EndHorizontal ();
EditorGUILayout.BeginHorizontal ();
GUILayout.Label ("With physics+joints");
physics = EditorGUILayout.Toggle (physics);
EditorGUILayout.EndHorizontal ();
EditorGUILayout.BeginHorizontal ();
GUILayout.Label ("With scripts+controller");
scripts = EditorGUILayout.Toggle (scripts);
EditorGUILayout.EndHorizontal ();
EditorGUILayout.Space();
EditorGUILayout.Space();
errorMsg="";
if (!fromTrans)
errorMsg+="\"From\" not yet set!";
if (!toTrans)
errorMsg+=" \n\"To\" not yet set!";
if (fromTrans&toTrans){
if (!checkChildrenRecurse(fromTrans,toTrans,"")){
GUILayout.Label ("Warning: ", EditorStyles.boldLabel);
}
if (errorMsg!=""){
GUILayout.Label(errorMsg);
}
EditorGUILayout.BeginHorizontal ();
EditorGUILayout.Space();
if (GUILayout.Button ("Copy!")){
copyComponentsRecurse(fromTrans,toTrans,fromTrans,toTrans);
}
EditorGUILayout.Space();
EditorGUILayout.EndHorizontal ();
}
else
{
if (errorMsg!=""){
GUILayout.Label ("Warning: ", EditorStyles.boldLabel);
GUILayout.Label(errorMsg);
}
}
}
}
function copyComponentsRecurse (src : Transform, dst : Transform, originalSrc : Transform, originalDst : Transform)
{
//Delete stuff from destination
dst.tag=src.tag;
dst.gameObject.layer=src.gameObject.layer;
var toComps:Component[] = dst.GetComponents(Component);
for (var dstComponent:Component in toComps){
if (dstComponent.GetType()==Animation&anims)
DestroyImmediate(dstComponent);
else if (dstComponent.GetType()==Rigidbody&physics){
if (!dst.GetComponent(CharacterJoint))
DestroyImmediate(dstComponent);
}
else if (dstComponent.GetType()==BoxCollider&physics)
DestroyImmediate(dstComponent);
else if (dstComponent.GetType()==SphereCollider&physics)
DestroyImmediate(dstComponent);
else if (dstComponent.GetType()==CapsuleCollider&physics)
DestroyImmediate(dstComponent);
else if (dstComponent.GetType()==MeshCollider&physics)
DestroyImmediate(dstComponent);
else if (dstComponent.GetType()==CharacterController&scripts)
DestroyImmediate(dstComponent);
else if (dstComponent.GetType()==CharacterJoint&physics)
DestroyImmediate(dstComponent);
else if (dstComponent.GetType().BaseType==MonoBehaviour&scripts)
DestroyImmediate(dstComponent);
}
//Copy stuff from source to destination
var copyComps:Component[] = src.GetComponents(Component);
for (var srcComponent:Component in copyComps){
if (srcComponent.GetType()==Animation&anims){
var new_animation:Animation= dst.gameObject.AddComponent(Animation);
var helpsource:Animation=srcComponent;
for (var state : AnimationState in helpsource)
{
new_animation.AddClip(helpsource[state.name].clip, state.name);
}
new_animation.clip=helpsource.clip;
new_animation.playAutomatically = helpsource.playAutomatically;
new_animation.animatePhysics = helpsource.animatePhysics;
new_animation.animateOnlyIfVisible = helpsource.animateOnlyIfVisible;
}
else if (srcComponent.GetType()==Rigidbody&physics){
//var ialreadyhavethis:Rigidbody=dst.GetComponent(Rigidbody);
var new_rigid:Rigidbody=dst.GetComponent(Rigidbody);
if (!new_rigid)
new_rigid= dst.gameObject.AddComponent(Rigidbody);
var helpsource2:Rigidbody=srcComponent;
new_rigid.mass=helpsource2.mass;
new_rigid.drag=helpsource2.drag;
new_rigid.angularDrag=helpsource2.angularDrag;
new_rigid.useGravity=helpsource2.useGravity;
new_rigid.isKinematic=helpsource2.isKinematic;
new_rigid.interpolation=helpsource2.interpolation;
new_rigid.freezeRotation=helpsource2.freezeRotation;
}
else if (srcComponent.GetType()==BoxCollider&physics){
var new_box:BoxCollider= dst.gameObject.AddComponent(BoxCollider);
var helpsource3:BoxCollider=srcComponent;
new_box.material=helpsource3.material;
new_box.isTrigger=helpsource3.isTrigger;
new_box.size=helpsource3.size;
new_box.center=helpsource3.center;
}
else if (srcComponent.GetType()==SphereCollider&physics){
var new_sphere:SphereCollider= dst.gameObject.AddComponent(SphereCollider);
var helpsource4:SphereCollider=srcComponent;
new_sphere.material=helpsource4.material;
new_sphere.isTrigger=helpsource4.isTrigger;
new_sphere.radius=helpsource4.radius;
new_sphere.center=helpsource4.center;
}
else if (srcComponent.GetType()==CapsuleCollider&physics){
var new_capsule:CapsuleCollider= dst.gameObject.AddComponent(CapsuleCollider);
var helpsource5:CapsuleCollider=srcComponent;
new_capsule.material=helpsource5.material;
new_capsule.isTrigger=helpsource5.isTrigger;
new_capsule.radius=helpsource5.radius;
new_capsule.height=helpsource5.height;
new_capsule.direction=helpsource5.direction;
new_capsule.center=helpsource5.center;
}
else if (srcComponent.GetType()==CharacterController&scripts){
var new_characterC:CharacterController= dst.GetComponent(CharacterController);
if (!new_characterC)
new_characterC=dst.gameObject.AddComponent(CharacterController);
var helpsource6:CharacterController=srcComponent;
new_characterC.height=helpsource6.height;
new_characterC.radius=helpsource6.radius;
new_characterC.slopeLimit=helpsource6.slopeLimit;
new_characterC.stepOffset=helpsource6.stepOffset;
new_characterC.center=helpsource6.center;
}
else if (srcComponent.GetType()==CharacterJoint&physics){
var new_joint:CharacterJoint= dst.gameObject.AddComponent(CharacterJoint);
var helpsource7:CharacterJoint=srcComponent;
if (helpsource7.connectedBody!=null){
if (helpsource7.connectedBody.transform.IsChildOf(originalSrc))
{
var myPath4:String="";
var thisIsMe4:Transform=helpsource7.connectedBody.transform;
while(thisIsMe4.rigidbody!=originalSrc.rigidbody) {
if (myPath4=="") myPath4=thisIsMe4.name;
else myPath4=thisIsMe4.name+"/"+myPath4;
thisIsMe4=thisIsMe4.parent;
}
var relativeValue4:Transform=originalDst.Find(myPath4);
if (relativeValue4)
new_joint.connectedBody=relativeValue4.rigidbody;
else if (helpsource7.connectedBody==originalSrc.rigidbody){
new_joint.connectedBody=originalDst.rigidbody;
}
else{
new_joint.connectedBody=helpsource7.connectedBody;
}
}
else
new_joint.connectedBody=helpsource7.connectedBody;
}
else
new_joint.connectedBody=helpsource7.connectedBody;
new_joint.anchor=helpsource7.anchor;
new_joint.axis=helpsource7.axis;
new_joint.swingAxis=helpsource7.swingAxis;
new_joint.lowTwistLimit=helpsource7.lowTwistLimit;
new_joint.highTwistLimit=helpsource7.highTwistLimit;
new_joint.swing1Limit=helpsource7.swing1Limit;
new_joint.swing2Limit=helpsource7.swing2Limit;
new_joint.breakForce=helpsource7.breakForce;
new_joint.breakTorque=helpsource7.breakTorque;
}
//if its a script
else if (srcComponent.GetType().BaseType==MonoBehaviour&scripts){
var new_script = dst.gameObject.AddComponent(srcComponent.GetType());
for(var f: FieldInfo in srcComponent.GetType().GetFields())
{
//if the value in the script is a gameObject, and something is assigned to it...
if (f.GetValue(srcComponent)!=null){
if (f.GetValue(srcComponent).GetType()==GameObject){
//if the value is a child of the original source, so in the same hierarcy,
//then we should find the same object in the destination, and set that one
//because if the value points to my head, i dont want my clone's value to point to my head too
//i want it to point to its own head.
if (f.GetValue(srcComponent).transform.IsChildOf(originalSrc))
{
var myPath:String="";
var thisIsMe:GameObject=f.GetValue(srcComponent);
while(thisIsMe!=originalSrc.gameObject) {
if (myPath=="") myPath=thisIsMe.name;
else myPath=thisIsMe.name+"/"+myPath;
thisIsMe=thisIsMe.transform.parent.gameObject;
}
var relativeValue:Transform=originalDst.Find(myPath);
if (relativeValue)
f.SetValue(new_script, relativeValue.gameObject);
else if (f.GetValue(srcComponent)==originalSrc.gameObject){
f.SetValue(new_script, originalDst.gameObject);
}
else{
f.SetValue(new_script, f.GetValue(srcComponent));
}
}
else
f.SetValue(new_script, f.GetValue(srcComponent));
}
else if (f.GetValue(srcComponent).GetType()==Transform){
//same as at the gameobject
if (f.GetValue(srcComponent).IsChildOf(originalSrc))
{
var myPath2:String="";
var thisIsMe2:Transform=f.GetValue(srcComponent);
while(thisIsMe2!=originalSrc) {
if (myPath2=="") myPath2=thisIsMe2.name;
else myPath2=thisIsMe2.name+"/"+myPath2;
thisIsMe2=thisIsMe2.parent;
}
var relativeValue2:Transform=originalDst.Find(myPath2);
if (relativeValue2)
f.SetValue(new_script, relativeValue2);
else if (f.GetValue(srcComponent)==originalSrc){
f.SetValue(new_script, originalDst);
}
else{
f.SetValue(new_script, f.GetValue(srcComponent));
}
}
else
f.SetValue(new_script, f.GetValue(srcComponent));
}
else if (f.GetValue(srcComponent).GetType()==Rigidbody){
//if the value is a child of the original source, so in the same hierarcy,
//then we should find the same object in the destination, and set that one
//because if the value points to my head, i dont want my clone's value to point to my head too
//i want it to point to its own head.
if (f.GetValue(srcComponent).transform.IsChildOf(originalSrc))
{
var myPath3:String="";
var thisIsMe3:Transform=f.GetValue(srcComponent).transform;
while(thisIsMe3.rigidbody!=originalSrc.rigidbody) {
if (myPath3=="") myPath3=thisIsMe3.name;
else myPath3=thisIsMe3.name+"/"+myPath3;
thisIsMe3=thisIsMe3.parent;
}
var relativeValue3:Transform=originalDst.Find(myPath3);
if (relativeValue3)
f.SetValue(new_script, relativeValue3.rigidbody);
else if (f.GetValue(srcComponent)==originalSrc.rigidbody){
f.SetValue(new_script, originalDst.rigidbody);
}
else{
f.SetValue(new_script, f.GetValue(srcComponent));
}
}
else
f.SetValue(new_script, f.GetValue(srcComponent));
}
else {
f.SetValue(new_script, f.GetValue(srcComponent));
}
}
else {
f.SetValue(new_script, f.GetValue(srcComponent));
}
}
}
}
//make the recurse thingy
for (var child : Transform in src) {
var curDst : Transform = dst.Find(child.name);
if (curDst){
copyComponentsRecurse(child, curDst, originalSrc, originalDst);
}
}
}
function checkChildrenRecurse (src : Transform, dst : Transform, srcPath:String) : boolean
{
if (src.childCount!=dst.childCount){
errorMsg="Child count of "+srcPath+src.gameObject.name+" in \"From\" is not equal to "+dst.gameObject.name+" in \"To\".\n";
return false;
}
else if (src.childCount>0)
{
var okay:boolean=true;
for (var child : Transform in src) {
var curDst : Transform = dst.Find(child.name);
if (curDst){
if (!checkChildrenRecurse(child, curDst, srcPath+child.gameObject.name+"\\"))
{
okay=false;
}
}
else{
errorMsg="Can't find "+src.gameObject.name+"\\"+srcPath+child.gameObject.name+" in \"To\"\n";
return false;
}
}
return okay;
}
else{
return true;
}
}
