80 lines
2.2 KiB
C#
80 lines
2.2 KiB
C#
using System.Collections;
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using UnityEngine;
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namespace UnityStandardAssets.Utility
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{
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public class DragRigidbody : MonoBehaviour
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{
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private const float k_Spring = 50f;
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private const float k_Damper = 5f;
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private const float k_Drag = 10f;
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private const float k_AngularDrag = 5f;
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private const float k_Distance = 0.2f;
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private const bool k_AttachToCenterOfMass = false;
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private SpringJoint m_SpringJoint;
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private void Update()
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{
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if (!Input.GetMouseButtonDown(0))
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{
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return;
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}
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Camera camera = FindCamera();
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RaycastHit hitInfo = default(RaycastHit);
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if (Physics.Raycast(camera.ScreenPointToRay(Input.mousePosition).origin, camera.ScreenPointToRay(Input.mousePosition).direction, out hitInfo, 100f, -5) && (bool)hitInfo.rigidbody && !hitInfo.rigidbody.isKinematic)
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{
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if (!m_SpringJoint)
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{
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GameObject gameObject = new GameObject("Rigidbody dragger");
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Rigidbody rigidbody = gameObject.AddComponent<Rigidbody>();
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m_SpringJoint = gameObject.AddComponent<SpringJoint>();
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rigidbody.isKinematic = true;
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}
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m_SpringJoint.transform.position = hitInfo.point;
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m_SpringJoint.anchor = Vector3.zero;
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m_SpringJoint.spring = 50f;
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m_SpringJoint.damper = 5f;
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m_SpringJoint.maxDistance = 0.2f;
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m_SpringJoint.connectedBody = hitInfo.rigidbody;
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StartCoroutine("DragObject", hitInfo.distance);
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}
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}
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private IEnumerator DragObject(float distance)
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{
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float oldDrag = m_SpringJoint.connectedBody.linearDamping;
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float oldAngularDrag = m_SpringJoint.connectedBody.angularDamping;
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m_SpringJoint.connectedBody.linearDamping = 10f;
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m_SpringJoint.connectedBody.angularDamping = 5f;
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Camera mainCamera = FindCamera();
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while (Input.GetMouseButton(0))
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{
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Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
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m_SpringJoint.transform.position = ray.GetPoint(distance);
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yield return null;
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}
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if ((bool)m_SpringJoint.connectedBody)
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{
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m_SpringJoint.connectedBody.linearDamping = oldDrag;
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m_SpringJoint.connectedBody.angularDamping = oldAngularDrag;
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m_SpringJoint.connectedBody = null;
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}
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}
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private Camera FindCamera()
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{
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if ((bool)GetComponent<Camera>())
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{
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return GetComponent<Camera>();
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}
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return Camera.main;
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}
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}
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}
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