error CS0019: trying to increase velocity when key is pressed twice in quick succession

Questions & Answers
1

Hello there,

In my game when the user presses the d key in quick succession I want the speed of the player to increase and it to change animation.

However I get this error: Assets/Scripts/PlayerController.cs(29,26): error CS0019: Operator &&' cannot be applied to operands of type float’ and `bool’

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour {

	public float maxSpeed = 0.5f;
	public float sprintSpeed = 2f;
	bool facingRight = true;
	
	Animator anim;
	Rigidbody2D rb;

	bool buttonPressed = false;
	float buttonDelay = 0.5f;

	void Start()
	{
		anim = GetComponent<Animator>();
		rb = GetComponent<Rigidbody2D> ();
	}

	void FixedUpdate()
	{
		float move = Input.GetAxisRaw ("Horizontal"); //how much we are moving
		
		anim.SetFloat ("Speed", Mathf.Abs (move));
		rb.velocity = new Vector2 (move * maxSpeed, GetComponent<Rigidbody2D>().velocity.y);
		buttonPressed = true;
		if(Input.GetAxisRaw ("Horizontal") && buttonPressed = true)
		{
			anim.SetBool("isRunning",true);
			rb.velocity = new Vector2 (move * sprintSpeed, GetComponent<Rigidbody2D>().velocity.y);
		}

		if (move > 0 && !facingRight) //if moving left and not facing left
			Flip (); //flip
		else if (move < 0 && facingRight) //if moving to the right and not facing right
			Flip (); //flip
	}

	void Flip()
	{
		facingRight = ! facingRight; // flips the character
		Vector3 theScale = transform.localScale; //flips the local scale
		theScale.x *= -1; //flip the x axis 
		transform.localScale = theScale; //apply all of this back to the local scale
	}

}
2

buttonPressed = true needs to be changed to buttonPressed == true. The single equals is changing a value, which should not be done in an if statement. The double equals is comparing them. In addition, you could completely leave out the “== true” and just have buttonPressed, because it is a bool.