Having trouble with Isometric movement

Question

Hey everyone, for starters id like to just say this is my first time scripting anything ever so I apologize for my ignorance. im trying to create a beat em up style game similar to castle crushers or scott pilgrim vs the world. things have been going smoothly and ive been able to get by on stitching so code together found in various different tutorial vidoes to get something that works but ive hit a snag, currently my character only moves on a Horizontal axis, and i want to apply a Vertical axis so he can move around like the games i mentioned before.

 using UnityEngine;
 using System.Collections;
 
 public class PlayerControllerScript : MonoBehaviour
 {
     public float maxSpeed = 6f;
     bool faceingRight = true;
 
     Animator anim;
 
     void Start()
     {
         anim = GetComponent<Animator> ();
     }
 
 
     void FixedUpdate()
     {
         float move = Input.GetAxisRaw ("Horizontal");
         float move = Input.GetAxisRaw ("Vertical");
 
         anim.SetFloat ("Speed", Mathf.Abs(move));
 
         GetComponent<Rigidbody2D>().velocity = new Vector2(move * maxSpeed, GetComponent<Rigidbody2D>().velocity.y);
 
         if (move > 0 && !faceingRight)
             Flip ();
         else if (move < 0 && faceingRight)
             Flip ();
     }
 
     void Flip()
     {
         faceingRight = !faceingRight;
         Vector3 TheScale = transform.localScale;
         TheScale.x *= -1;
         transform.localScale = TheScale;
     }
 }

Everything worked untill i applied the " float move = Input.GetAxisRaw ("Vertical");" I get an error saying "error CS0128: A local variable named 'move' is alreadt defined in this scope"

Again this is my first time scriptigng so i apologize for my frankinstiend scripting, i mostly pulled from what i could find and didnt make this myself, scripting and logic was never something i could wrap my brain around so im having trouble understanding it even with all the tutorials.

Answer 1

Best Answer

Answer by dkjunior · Oct 08, 2015 at 10:13 PM

You have two variables with the same name "move" in the same scope, and hence you get this compilation error. Give them different names:

 float moveH = Input.GetAxisRaw ("Horizontal");
 float moveV = Input.GetAxisRaw ("Vertical");
 
 GetComponent<Rigidbody2D>().velocity = maxSpeed * new Vector2(moveH , moveV);

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ShadowMolasses · Oct 08, 2015 at 10:28 PM 0

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Tried that, and modified all my other "move" variables to "moveH and moveV" however im still getting errors

 if (moveH , moveV > 0 && !faceingRight)
             Flip ();

here^

 else if (moveH , moveV < 0 && faceingRight)
             Flip ();

and here^

dkjunior · Oct 08, 2015 at 10:37 PM 0

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This syntax is incorrect. What exactly are you trying to achieve in these if statements?

ShadowMolasses dkjunior · Oct 09, 2015 at 02:11 AM 0

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if i change the direction the sprite will flip accordingly

dkjunior · Oct 09, 2015 at 04:52 PM 0

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You can keep your code for flipping in horizontal direction (just change move to moveH) in the if statements. You will also need to handle flips in vertical direction, something like:

 if (moveV > 0 && !facingUp)
     FlipVert();
 else if (moveV < 0 && facingUp)
     FlipVert();

 void FlipVert()
 {
     facingUp = !facingUp;
     Vector3 TheScale = transform.localScale;
     TheScale.y *= -1;
     transform.localScale = TheScale;
 }

Now, as you can see, there's plenty of code duplication if you just put it like this. I'll leave it up to you as an exercise to combine the code for horizontal/vertical flipping. Good luck!

ShadowMolasses dkjunior · Oct 10, 2015 at 04:04 AM 0

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I dot totally understand how code works yet, i just cant understand it no matter how much i watch, i thank your for helping me out and showing me some of your know how. now i just gotta figurew this code out

ShadowMolasses ShadowMolasses · Oct 10, 2015 at 05:28 AM 0

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 public class PlayerControllerScript : MonoBehaviour
 {
     public float maxSpeed = 6f;
     bool faceingRight = true;
 
     Animator anim;
 
     void Start()
     {
         anim = GetComponent<Animator> ();
     }
 
 
     void FixedUpdate()
     {
         float moveH = Input.GetAxisRaw ("Horizontal");
         float moveV = Input.GetAxisRaw ("Vertical");
 
         GetComponent<Rigidbody2D> ().velocity = maxSpeed * new Vector2 (moveH , moveV);
 
         anim.SetFloat ("Speed", Mathf.Abs(moveH , moveV));
 
         GetComponent<Rigidbody2D>().velocity = new Vector2(moveH , moveV * maxSpeed, GetComponent<Rigidbody2D>().velocity.y);
 
         if (moveV > 0 && !facingUp)
             FlipVert();
         else if (moveV < 0 && facingUp)
             FlipVert();
         
         void FlipVert()
         {
             facingUp = !facingUp;
             Vector3 TheScale = transform.localScale;
             TheScale.y *= -1;
             transform.localScale = TheScale;
         }
 
         if (moveH > 0 && !facingUp)
             FlipHorz();
         else if (moveV < 0 && facingUp)
             FlipHorz();
         
         void FlipHorz()
         {
             facingUp = !facingUp;
             Vector3 TheScale = transform.localScale;
             TheScale.y *= -1;
             transform.localScale = TheScale;
         }
     }

Will this work?

Having trouble with Isometric movement

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