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/******************************************************************************
* Spine Runtimes Software License v2.5
*
* Copyright (c) 2013-2016, Esoteric Software
* All rights reserved.
*
* You are granted a perpetual, non-exclusive, non-sublicensable, and
* non-transferable license to use, install, execute, and perform the Spine
* Runtimes software and derivative works solely for personal or internal
* use. Without the written permission of Esoteric Software (see Section 2 of
* the Spine Software License Agreement), you may not (a) modify, translate,
* adapt, or develop new applications using the Spine Runtimes or otherwise
* create derivative works or improvements of the Spine Runtimes or (b) remove,
* delete, alter, or obscure any trademarks or any copyright, trademark, patent,
* or other intellectual property or proprietary rights notices on or in the
* Software, including any copy thereof. Redistributions in binary or source
* form must include this license and terms.
*
* THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "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 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 THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
using UnityEngine;
using System.Collections.Generic;
namespace Spine.Unity.Modules {
// SkeletonUtilityKinematicShadow allows hinge chains to inherit a velocity interpreted from changes in parent transform position or from unrelated rigidbodies.
// Note: Uncheck "useRootTransformIfNull
public class SkeletonUtilityKinematicShadow : MonoBehaviour {
#region Inspector
[Tooltip("If checked, the hinge chain can inherit your root transform's velocity or position/rotation changes.")]
public bool detachedShadow = false;
public Transform parent;
public bool hideShadow = true;
public PhysicsSystem physicsSystem = PhysicsSystem.Physics3D;
#endregion
GameObject shadowRoot;
readonly List<TransformPair> shadowTable = new List<TransformPair>();
struct TransformPair {
public Transform dest, src;
}
public enum PhysicsSystem {
Physics2D,
Physics3D
};
void Start () {
// Duplicate this gameObject as the "shadow" with a different parent.
shadowRoot = Instantiate<GameObject>(this.gameObject);
Destroy(shadowRoot.GetComponent<SkeletonUtilityKinematicShadow>());
// Prepare shadow gameObject's properties.
var shadowRootTransform = shadowRoot.transform;
shadowRootTransform.position = transform.position;
shadowRootTransform.rotation = transform.rotation;
Vector3 scaleRef = transform.TransformPoint(Vector3.right);
float scale = Vector3.Distance(transform.position, scaleRef);
shadowRootTransform.localScale = Vector3.one;
if (!detachedShadow) {
// Do not change to null coalescing operator (??). Unity overloads null checks for UnityEngine.Objects but not the ?? operator.
if (parent == null)
shadowRootTransform.parent = transform.root;
else
shadowRootTransform.parent = parent;
}
if (hideShadow)
shadowRoot.hideFlags = HideFlags.HideInHierarchy;
var shadowJoints = shadowRoot.GetComponentsInChildren<Joint>();
foreach (Joint j in shadowJoints)
j.connectedAnchor *= scale;
// Build list of bone pairs (matches shadow transforms with bone transforms)
var bones = GetComponentsInChildren<SkeletonUtilityBone>();
var shadowBones = shadowRoot.GetComponentsInChildren<SkeletonUtilityBone>();
foreach (var b in bones) {
if (b.gameObject == this.gameObject)
continue;
System.Type checkType = (physicsSystem == PhysicsSystem.Physics2D) ? typeof(Rigidbody2D) : typeof(Rigidbody);
foreach (var sb in shadowBones) {
if (sb.GetComponent(checkType) != null && sb.boneName == b.boneName) {
shadowTable.Add(new TransformPair {
dest = b.transform,
src = sb.transform
});
break;
}
}
}
// Destroy conflicting and unneeded components
DestroyComponents(shadowBones);
DestroyComponents(GetComponentsInChildren<Joint>());
DestroyComponents(GetComponentsInChildren<Rigidbody>());
DestroyComponents(GetComponentsInChildren<Collider>());
}
static void DestroyComponents (Component[] components) {
for (int i = 0, n = components.Length; i < n; i++)
Destroy(components[i]);
}
void FixedUpdate () {
if (physicsSystem == PhysicsSystem.Physics2D) {
var shadowRootRigidbody = shadowRoot.GetComponent<Rigidbody2D>();
shadowRootRigidbody.MovePosition(transform.position);
shadowRootRigidbody.MoveRotation(transform.rotation.eulerAngles.z);
} else {
var shadowRootRigidbody = shadowRoot.GetComponent<Rigidbody>();
shadowRootRigidbody.MovePosition(transform.position);
shadowRootRigidbody.MoveRotation(transform.rotation);
}
for (int i = 0, n = shadowTable.Count; i < n; i++) {
var pair = shadowTable[i];
pair.dest.localPosition = pair.src.localPosition;
pair.dest.localRotation = pair.src.localRotation;
}
}
}
}