koobas.hobune.stream
how to rotate GameObject towards joystick
So I'm creating a top-down shooter and trying to make the player face the direction of the joystick. You walk with the left stick and aim with the right stick. My goal is to have it so that if you, let's say, turn the stick to the right your character would look right. This is my current code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
[RequireComponent(typeof(PlayerMotor))]
public class PlayerController : MonoBehaviour {
Camera cam;
PlayerMotor motor;
void Start () {
cam = Camera.main;
motor = GetComponent<PlayerMotor>();
}
void Update () {
//movement
motor.MoveToPoint(new Vector3(transform.position.x + Input.GetAxis("Horizontal"), transform.position.y, transform.position.z + Input.GetAxis("Vertical")));
//cam control
cam.transform.position = new Vector3(transform.position.x,
transform.position.y + 9.0f,
transform.position.z);
//this is the problem
transform.Rotate(new Vector3(transform.position.x + Input.GetAxis("rightStickHorizontal"), transform.position.y, transform.position.z + Input.GetAxis("rightStickVertical")));
}
}
for some reason when I do this it just turns ever so slowly in the direction of the joystick (appears to be 1 degree per frame). ,So I'm creating a top-down shooter and trying to make the player face the direction of the joystick. You walk with the left stick and rotate with the right stick. My goal is to have it be so that if you point the right stick towards the, let's say right your character would look right. this is my current code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
[RequireComponent(typeof(PlayerMotor))]
public class PlayerController : MonoBehaviour {
Camera cam;
PlayerMotor motor;
void Start () {
cam = Camera.main;
motor = GetComponent<PlayerMotor>();
}
void Update () {
//movement
motor.MoveToPoint(new Vector3(transform.position.x + Input.GetAxis("Horizontal"), transform.position.y, transform.position.z + Input.GetAxis("Vertical")));
//cam control
cam.transform.position = new Vector3(transform.position.x,
transform.position.y + 9.0f,
transform.position.z);
//this is the problem
transform.Rotate(new Vector3(transform.position.x + Input.GetAxis("rightStickHorizontal"), transform.position.y, transform.position.z + Input.GetAxis("rightStickVertical")));
}
}
for some reason when I do this it just turns ever so slowly in the direction of the joystick (appears to be 1 degree per frame).
Hello there,
From your description, it seems this is just a speed issue. The behaviour is correct, but it rotates too slowly.
Input.GetAxis() can only go from -1 to 1, and Transform.Rotate() applies that rotation every time it is called. This means that your current code would indeed apply between -1 and 1 degree rotation every frame.
To fix that, I'd recommend implementing a rotation speed variable, and multiply it by the current axis value to get the rotation to apply.
[SerializeField] private float rotationSpeed = 1.0f //You can tweak this in the inspector
transform.Rotate(myAxisValue * rotationSpeed, 0.0f, 0.0f);
Note that if you are building a twin-stick shooter, you might only want to rotate on one axis, not all three.
Now that you have this multiplier, you can do lots of things with it: if you have different character classes, you can tweak that variable to make them feel quicker or slower, you can have speed buffs or debuffs, etc...
I hope that helps!
Cheers,
~LegendBacon
so the myAxisValue would be my Vector3 which appears to not be the case as it returns the errors:
error CS1502: The best overloaded method match for \`UnityEngine.Transform.Rotate(float, float, float, UnityEngine.Space)' has some invalid arguments
and
error CS1503: Argument \`#1' cannot convert \`UnityEngine.Vector3' expression to type \`float'
Not exactly.
I recommend checking the Transform.Rotate() documentation. If you want to use three floats, use my example above.
However, if you really want to use a Vector3, do it as follows:
transform.Rotate(new Vector3(myAxisValue * rotationSpeed, 0.0f, 0.0f));
Cheers,
~LegendBacon
