how to stop character going into wall lmesh when moving forward

Question

hello there, i am trying to make 2.5D game with a cube. i am facing this weird problem when the cube is moving forward it's some part of mesh goes inside Wall object mesh also when jumping it's sticking with wall and if i kept pressing moveforward button it get's pass the wall. I tried few solutions i found on internet like apply physics material with 0 friction on wall, and use Rigidbody.MovePostion instead of transform.Translate but none worked, so i am asking here https://www.youtube.com/watch?v=Z7kRpsiJUW0&feature=youtu.be (video of problem)

code for movement

   void Update()
         {
             float ver = Input.GetAxis("Horizontal") * speed * Time.deltaTime;
             move = new Vector3(0, 0, ver);
          //   move = (transform.forward * speed * Time.deltaTime);
             RIGIDBODY.MovePosition(transform.position + move);
 
         }

code for playerJump

   public class PlayerJump : MonoBehaviour
     {
         [SerializeField]
         protected float JumpForce;
         [SerializeField]
         protected float FallMultiplier;
         [SerializeField]
         protected float lowJumpGravity;
 
         public bool IsGrounded;
         public bool CanDoubleJUmp;
         public bool Dowalljump;
 
         public BoxCollider dectorCollider;
         public CharacterControl characterControl;
         void Start()
         {
             characterControl = GetComponent<CharacterControl>();
         }
         void Update()
         {
             WallJumping();
 
             if (Input.GetKeyDown(KeyCode.Space))
             {
                 if (IsGrounded)
                 {
                     characterControl.Jump = true;
                     CanDoubleJUmp = true;
                 }
                 if (!IsGrounded)
                 {
                     if (CanDoubleJUmp)
                     {
                         characterControl.DoubleJump = true;
 
                     }
                 }
             }
             if (Input.GetKey(KeyCode.Return))
             {
                 Dowalljump = true;
             }
         }
         void FixedUpdate()
         {
             IsGrounded = false;
             ApplyGravity();
             Jump();
            
         }
         void ApplyGravity()
         {
             //if character is falling increase acceraltion
             if (characterControl.RIGIDBODY.velocity.y < 0f)
             {
                 characterControl.RIGIDBODY.velocity += Vector3.up * Physics.gravity.y * (FallMultiplier - 1) * Time.deltaTime;
             }
             //if it's  in air make him fall don't keep going up
             else if (characterControl.RIGIDBODY.velocity.y > 0f && characterControl.Jump == false)
             {
                 characterControl.RIGIDBODY.velocity += Vector3.up * Physics.gravity.y * (lowJumpGravity - 1) * Time.deltaTime;
             }
         }
 
         void Jump()
         {
             if (characterControl.Jump == true)
             {
                 characterControl.RIGIDBODY.AddForce(Vector3.up * JumpForce, ForceMode.Impulse);
             }
             if (characterControl.DoubleJump == true)
             {
                 CanDoubleJUmp = false;
                 characterControl.RIGIDBODY.AddForce(Vector3.up * 6f, ForceMode.Impulse);
             }
             characterControl.DoubleJump = false;
             characterControl.Jump = false;
         }
         void OnTriggerStay(Collider GroundColider)
         {
             if (!GroundColider.isTrigger && GroundColider.gameObject.tag == "Ground")
             {
                 IsGrounded = true;
             }
         }
 
         void WallJumping()
         {
             RaycastHit leftHitInfo;
             RaycastHit RightHitInfo;
 
             if (Physics.Raycast(transform.position, this.transform.forward, out RightHitInfo, 0.5f))
             {
                 Debug.DrawRay(transform.position, this.transform.forward * RightHitInfo.distance, Color.red);
                 Debug.Log(RightHitInfo.collider.tag);
 
                 if (!IsGrounded && Dowalljump == true)
                 {
                     if (RightHitInfo.collider.tag == "RightWall")
                     {
                         characterControl.RIGIDBODY.AddForce(RightHitInfo.normal * 6f, ForceMode.Impulse);
                         characterControl.RIGIDBODY.AddForce(Vector3.up * 8f, ForceMode.Impulse);
                     }
                 }
                 Dowalljump = false;
             }
 
             if (Physics.Raycast(transform.position, -this.transform.forward, out leftHitInfo, 0.5f))
             {
                 Debug.DrawRay(transform.position, -this.transform.forward * leftHitInfo.distance, Color.red);
                 Debug.Log(leftHitInfo.collider.tag);
 
                 if (!IsGrounded && Dowalljump == true)
                 {
                     if (leftHitInfo.collider.tag == "LeftWall")
                     {
                         characterControl.RIGIDBODY.AddForce(leftHitInfo.normal * 6f, ForceMode.Impulse);
                         characterControl.RIGIDBODY.AddForce(Vector3.up * 8f, ForceMode.Impulse);
                     }
                 }
                 Dowalljump = false;
             }
 
 
         }
     }

. alt text

Answer 1

Answer by lgarczyn · Oct 09, 2019 at 09:18 PM

MovePosition will go through walls, it needs to be paired with a raycast, most likely a CapsuleCast in your situation.

If you wish to avoid this kind of issues, simply use AddForce or set the velocity depending on input.

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unity_2_3_VXKGFGtKtg · Oct 10, 2019 at 04:47 AM 0

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Problem With Rigidbody.velocity Setting velocity Rigidbody.velocity is working but if i do that, Apply Gravity and jump stops working i thnk i should say they are behaving very weirdly like jump not working and if i set jumpforce value very high like 500 character will teleport in upward direction like snaping, same for gravity character is falling really slow and with snap effect.

Problem with Addforce problem with addforce is that my game is endless runner and addforce give effect like acceleration character starts to move slowly then speed increases slowly i don't want that since it's endless runner

please help i give you my scripts if you like

joshuapeacock unity_2_3_VXKGFGtKtg · Oct 10, 2019 at 05:25 AM 0

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Set a target velocity so that your character doesn't continue to accelerate after reaching the desired move speed . For example...

 float moveSpeed = 5f;
 Vector3 direction = Vector3.forward;
 Vector3 targetVelocity = direction * moveSpeed;
 rigidbody.AddForce(targetVelocity - rigidbody.velocity);

unity_2_3_VXKGFGtKtg joshuapeacock · Oct 10, 2019 at 05:31 AM 0

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Ok but it looks like Character still start with less velocity than what i set. but it's way better

joshuapeacock · Oct 10, 2019 at 02:33 PM 0

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Use Force$$anonymous$$ode.Impulse to achieve an instant acceleration.

unity_2_3_VXKGFGtKtg joshuapeacock · Oct 10, 2019 at 06:57 PM 0

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yes that's what i thought it did the work but now same problem as rigidbody.velocity jump and gravity acting weird it's falling slowly jump not working if it's high value like 500f it's snap like effect. also tried Force$$anonymous$$ode.velocityChange, other options

with velocitychange and Impulse same problem with jump and gravity with .Force and acceleration as starting slow problem

joshuapeacock unity_2_3_VXKGFGtKtg · Oct 10, 2019 at 07:30 PM 0

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You can just add an acceleration multiplier, so that your character accelerates more quickly.

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how to stop character going into wall lmesh when moving forward

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