How to make mouse direction and player move direction in FPS game

December 08, 2022 December 08, 2022

How to make mouse direction and player move direction in FPS game | Unity

In a first-person shooter (FPS) game, the player's move direction is typically controlled by the keyboard, while the mouse is used to control the direction the player's character is facing. To make the player's character move in the direction they are facing, you can use the following steps:

Methode 1:

First, create a variable for the player's movement direction and set it to a Vector3 with a default value of (0,0,0).
In the Update() method, check for input from the mouse and assign the movement direction based on the mouse's X and Y position. For example:

if (Input.GetMouseButton(0))
{
float mouseX = Input.GetAxis("Mouse X");
float mouseY = Input.GetAxis("Mouse Y");
movementDirection = new Vector3(mouseX, 0, mouseY);
}

In the FixedUpdate() method, apply the movement direction to the player's rigidbody by using the MovePosition() method. For example:

rb.MovePosition(rb.position + movementDirection * Time.fixedDeltaTime);

To add a smooth rotation to the player's direction, use the LookRotation() method on the player's transform to rotate towards the movement direction. For example:

transform.rotation = Quaternion.Slerp(transform.rotation,

 Quaternion.LookRotation(movementDirection), Time.fixedDeltaTime * rotationSpeed);

To limit the player's movement speed, use the ClampMagnitude() method on the movement direction vector. For example:

movementDirection = Vector3.ClampMagnitude(movementDirection, maxSpeed);

Methode 2:

Create a C# script and attach it to the player game object.
In the script, create a Vector3 variable to store the player's movement direction.
Use the Input.GetAxisRaw() method to get the input from the horizontal and vertical axes, and store the values in separate float variables.
Use the float variables to set the x and y values of the movement direction vector.
Use the Input.GetMouseButton() method to check if the left mouse button is being pressed.
If the left mouse button is being pressed, use the Input.mousePosition property to get the current position of the mouse on the screen.
Use the Camera.main.ScreenToWorldPoint() method to convert the screen coordinates of the mouse to world coordinates.
Set the movement direction vector to be the direction from the player's position to the mouse position.
In the Update() method, use the movement direction vector and the player's movement speed to calculate the new position of the player.
Use the CharacterController.Move() method to move the player to the new position.
In the Update() method, use the movement direction vector to rotate the player in the direction of movement.
Use the CharacterController.SimpleMove() method to move the player in the direction of movement, taking into account any obstacles or collisions.

Methode 3:

To make the mouse direction and player move direction in an FPS game in Unity, follow these steps:

In the Unity editor, create a new empty GameObject and name it "PlayerController".
Attach a CharacterController component to the PlayerController GameObject. This component will handle the player's movement.
Add a script to the PlayerController GameObject and name it "PlayerControllerScript".
In the PlayerControllerScript, create a variable of type CharacterController and assign it to the CharacterController component on the PlayerController GameObject.
Create another variable of type Transform and assign it to the main camera in the scene. This will be used to get the direction of the mouse cursor.
In the Update() function, use the Input class to get the mouse position and use the ScreenToWorldPoint() method to convert it to world coordinates.
Calculate the direction from the player's position to the mouse position using the Vector3.Normalize() method.
Use the CharacterController.Move() method to move the player in the calculated direction.
In the PlayerControllerScript, add a public float variable for the player's movement speed and use it in the CharacterController.Move() method to control the player's movement speed.
Test the game to see if the player moves in the direction of the mouse cursor. Adjust the movement speed and other settings as needed.

Methode 4:

Bind the keyboard keys for forward, backward, left, and right movement to the appropriate movement functions in your game engine or programming language.
Use the mouse to track the player's current facing direction, and update the player's character's orientation accordingly.
When the player presses one of the movement keys, calculate the direction the player's character should move based on their current facing direction and the direction of the key press (for example, pressing the forward key should make the player's character move forward in the direction they are facing).
Update the player's character's position using this calculated move direction, and repeat the process each frame to continuously update the player's movement.

It's important to note that the exact implementation of this process will vary depending on the game engine or programming language you are using. It's also worth considering other factors that may affect the player's movement, such as gravity, collisions with other objects, and player abilities such as jumping or sprinting.