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0 votes

My character behaves weirdly. When I rotate it, it sometimes (more often than not) it drifts slightly to a side instead of going straight the direction it is facing.
This is the code I'm using right now:

extends CharacterBody3D

@onready var spring_arm = $SpringArm3D

const GRAVITY = 20.0
const FLY_IMPULSE = 8.0
const MAX_SPEED = 10.0
const ACCELERATION = 20.0
const ROTATION_SPEED = 1.0

var camera_rotation = Vector3.ZERO
var move_direction = Vector3.ZERO
var rotation_direction = 0.0

func _ready():
    Input.mouse_mode = Input.MOUSE_MODE_CAPTURED

func _physics_process(delta: float) -> void:
    # Move the bird downwards at a constant rate
    velocity.y -= GRAVITY * delta
    velocity.y = clamp(velocity.y, -MAX_SPEED, MAX_SPEED)

    if Input.is_action_pressed("move_forward"):
        move_direction = (transform.basis * Vector3(0, 0, -1.0)).normalized() 
        move_direction = Vector3.ZERO

velocity += move_direction
velocity.x = clamp(velocity.x, -MAX_SPEED, MAX_SPEED)
velocity.z = clamp(velocity.z, -MAX_SPEED, MAX_SPEED)

# Flap the bird's wings and go upwards if spacebar is pressed
if Input.is_action_pressed("flap"):
    velocity.y = FLY_IMPULSE

# Update the bird's position and rotation

# Rotate the bird left or right based on input
rotation_direction = 0.0

if Input.is_action_pressed("move_left"):
    rotation_direction = ROTATION_SPEED

if Input.is_action_pressed("move_right"):
    rotation_direction = -ROTATION_SPEED

rotation.y += rotation_direction * delta

func _input(event: InputEvent) -> void:
    # Handle mouse movement to control camera rotation and speed
    if event is InputEventMouseMotion:
        camera_rotation.x -= event.relative.y * 0.005
        camera_rotation.x = clamp(camera_rotation.x, -1.5, 1.5)
        camera_rotation.y -= event.relative.x * 0.005
        spring_arm.rotation = Vector3(camera_rotation.x, camera_rotation.y, 0)

Alternatively I tried using the objects direction like so:

# Calculate the bird's forward direction based on its rotation
var forward_direction = -get_global_transform().basis.z

# Move the bird forwards in its own forward direction on the press of the W button
if Input.is_action_pressed("move_forward"):
    move_direction = forward_direction * ACCELERATION * delta
    move_direction = Vector3.ZERO

This however yielded the same result.
Any idea why this is happing or how I can prevent it? Thanks in advance!

Godot version 4.0.2
in Engine by (12 points)

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