72 lines
1.8 KiB
C#
72 lines
1.8 KiB
C#
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using UnityEngine;
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using System.Collections;
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[RequireComponent(typeof(Collider))]
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[RequireComponent(typeof(Rigidbody))]
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public class GameEntity : MonoBehaviour
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{
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protected Rigidbody rb;
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public Vector3 centerOfMassOffset = new Vector3(0F, 0F, 0F);
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Vector3 S_centerOfMass;
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public Vector3 speed { get; private set; }
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public float absSpeed { get; private set; }
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public float sqrtSpeed { get; private set; }
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Vector3 last_position;
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public float totalMass { get; private set; }
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protected virtual void Awake()
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{
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rb = GetComponent<Rigidbody>();
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S_centerOfMass = rb.centerOfMass;
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last_position = transform.position;
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totalMass = GetTotalMass(transform);
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}
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private static float GetTotalMass(Transform t)
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{
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float mass = 0F;
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Rigidbody rb = t.GetComponent<Rigidbody>();
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if(rb != null)
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mass += rb.mass;
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for(int i = 0 ; i < t.childCount ; i++)
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mass += GetTotalMass(t.GetChild(i));
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return mass;
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}
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protected virtual void FixedUpdate()
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{
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#if UNITY_EDITOR
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if (rb.centerOfMass != S_centerOfMass + centerOfMassOffset)
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rb.centerOfMass = S_centerOfMass + centerOfMassOffset;
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#endif
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speed = (transform.position - last_position) / Time.deltaTime;
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last_position = transform.position;
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absSpeed = speed.x < 0F ? -speed.x : speed.x
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+ speed.y < 0F ? -speed.y : speed.y
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+ speed.z < 0F ? -speed.z : speed.z;
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if(absSpeed < 0)
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absSpeed = -absSpeed;
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sqrtSpeed = Mathf.Sqrt(absSpeed);
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}
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#if UNITY_EDITOR
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protected virtual void OnDrawGizmos()
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{
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if(rb == null)
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return;
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Gizmos.color = Color.black;
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Gizmos.DrawWireSphere(rb.worldCenterOfMass, 0.25F);
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}
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#endif
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}
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