unity 2d controler
using System.Collections; using System.Collections.Generic; using UnityEngine; public class PhysicsObject : MonoBehaviour { public float minGroundNormalY = .65f; public float gravityModifier = 1f; protected Vector2 targetVelocity; protected bool grounded; protected Vector2 groundNormal; protected Rigidbody2D rb2d; protected Vector2 velocity; protected ContactFilter2D contactFilter; protected RaycastHit2D[] hitBuffer = new RaycastHit2D[16]; protected List<RaycastHit2D> hitBufferList = new List<RaycastHit2D> (16); protected const float minMoveDistance = 0.001f; protected const float shellRadius = 0.01f; void OnEnable() { rb2d = GetComponent<Rigidbody2D> (); } void Start () { contactFilter.useTriggers = false; contactFilter.SetLayerMask (Physics2D.GetLayerCollisionMask (gameObject.layer)); contactFilter.useLayerMask = true; } void Update () { targetVelocity = Vector2.zero; ComputeVelocity (); } protected virtual void ComputeVelocity() { } void FixedUpdate() { velocity += gravityModifier * Physics2D.gravity * Time.deltaTime; velocity.x = targetVelocity.x; grounded = false; Vector2 deltaPosition = velocity * Time.deltaTime; Vector2 moveAlongGround = new Vector2 (groundNormal.y, -groundNormal.x); Vector2 move = moveAlongGround * deltaPosition.x; Movement (move, false); move = Vector2.up * deltaPosition.y; Movement (move, true); } void Movement(Vector2 move, bool yMovement) { float distance = move.magnitude; if (distance > minMoveDistance) { int count = rb2d.Cast (move, contactFilter, hitBuffer, distance + shellRadius); hitBufferList.Clear (); for (int i = 0; i < count; i++) { hitBufferList.Add (hitBuffer [i]); } for (int i = 0; i < hitBufferList.Count; i++) { Vector2 currentNormal = hitBufferList [i].normal; if (currentNormal.y > minGroundNormalY) { grounded = true; if (yMovement) { groundNormal = currentNormal; currentNormal.x = 0; } } float projection = Vector2.Dot (velocity, currentNormal); if (projection < 0) { velocity = velocity - projection * currentNormal; } float modifiedDistance = hitBufferList [i].distance - shellRadius; distance = modifiedDistance < distance ? modifiedDistance : distance; } } rb2d.position = rb2d.position + move.normalized * distance; } }
