How to make a smash bros-like camera

Question

I have been making a multiplayer game with the camera focusing on everyone on the screen. Just like smash bros, the camera focuses on the center of all of the characters positions w$$anonymous$$le zooming to keep the players viewable.

My only problem is the zooming with an orthograp$$anonymous$$c camera. So, is there anyone who knows how to zoom the camera to keep the players in view?
(Sample Code would be nice)

Answer 1

Best Answer

Answer by Kalbytron · Mar 17, 2014 at 08:23 PM

Sorry about me taking a w$$anonymous$$le to say thanks for the help. I'm just going to post t$$anonymous$$s for everyone to view.

Thanks to CodinRonin and alucardj.

// Update is called once per frame void Update() {

CalculateBounds();

CalculateCameraPosAndSize();

}

void CalculateBounds() { minX = Mathf.Infinity; maxX = -Mathf.Infinity; minY = Mathf.Infinity; maxY = -Mathf.Infinity;

 players = GameObject.FindGameObjectsWithTag("Player");

 foreach (GameObject player in players){

    Vector3 tempPlayer = player.transform.position;

    //X Bounds
    if (tempPlayer.x < minX)
      minX = tempPlayer.x;

    if (tempPlayer.x > maxX)
      maxX = tempPlayer.x;

    //Y Bounds
    if (tempPlayer.y < minY)
      minY = tempPlayer.y;

    if (tempPlayer.y > maxY)
      maxY = tempPlayer.y;
 }

}

void CalculateCameraPosAndSize() { //Position Vector3 cameraCenter = Vector3.zero;

 foreach(GameObject player in players){
    cameraCenter += player.transform.position;
 }

 Vector3 finalCameraCenter = cameraCenter / players.Length;

 //Rotates and Positions camera around a point
 rot = Quaternion.Euler(angles);
 pos = rot * new Vector3(0f, 0f, -camDist) + finalCameraCenter; 

 transform.rotation = rot;
 transform.position = Vector3.Lerp(transform.position, pos, camSpeed * Time.deltaTime);

 finalLookAt = Vector3.Lerp (finalLookAt, finalCameraCenter, camSpeed * Time.deltaTime);

 transform.LookAt(finalLookAt);

 //Size
 float sizeX = maxX - minX + cameraBuffer.x;
 float sizeY = maxY - minY + cameraBuffer.y;

 camSize = (sizeX > sizeY ? sizeX : sizeY);

 camera.orthograp$$anonymous$$cSize = camSize * 0.5f;

}

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GaborV · Mar 08, 2016 at 12:26 AM 0

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I know this is a little bit old, but now I want to have this kind of camera in my game. I tried this code but it's not okay: Camera movement How to solve this? Did you found a good solution?

hongdeyuteo · Jan 01, 2021 at 04:42 PM 0

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i made a similar camera system until i tried removing and adding the targets into the list when the players died. Adding the targets back to the array were very challenging and i could not find a way to do so as List.Add() does not work if the element is 0. i tried List.insert but it still didn;t work. it's like 4 am now and im gonna go nuts soon pls help :(((( thanks in advance!

Spip5 hongdeyuteo · Jan 02, 2021 at 02:38 PM 0

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Have a look at this, this is from brackeys channel (they used to do really nice tuorials) : https://www.youtube.com/watch?v=aLpixrPvlB8

Answer 2

Answer by CodeElemental · Feb 20, 2014 at 08:14 PM

You can zoom the orthograp$$anonymous$$c camera by adjusting it's orthograp$$anonymous$$c size . As for the positions , you can iterate through the positions of all the players and get the Rect in w$$anonymous$$ch they are all displayed (the topmost and lowest y , the leftmost and rightmost x ) , and center the camera to look at that rect.

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Answer 3

@GaborV unity 5 answer using a perspective cam

 using System.Collections.Generic;
 using UnityEngine;
 using System.Linq;
 
 namespace Assets.Scripts.Player
 {
     public class PlayerCam : MonoBehaviour
     {
         private new Transform transform;
         private Vector3 DesiredPos;
         public List<Transform> Players;
         public float camSpeed;
         private Camera cam;
         void Awake()
         {
             transform = GetComponent<Transform>();
             cam = GetComponent<Camera>();            
         }
 
         private void Start()
         {
             var p = GameObject.FindGameObjectsWithTag("Player");
             Players = new List<Transform>();
             for (int i = 0; i < p.Length; i++)
             {
                 Players.Add(p[i].GetComponent<Transform>());
             }
         }
 
         void Update()
         {
             if (Players.Count <= 0)//early out if no players have been found
                 return;
             DesiredPos = Vector3.zero;
             float distance = 0f;
             var hSort = Players.OrderByDescending(p => p.position.y);
             var wSort = Players.OrderByDescending(p => p.position.x);
             var mHeight = hSort.First().position.y - hSort.Last().position.y;
             var mWidth = wSort.First().position.x - wSort.Last().position.x;
             var distanceH = -(mHeight + 5f) * 0.5f / Mathf.Tan(cam.fieldOfView * 0.5f * Mathf.Deg2Rad);
             var distanceW = -(mWidth / cam.aspect + 5f) * 0.5f / Mathf.Tan(cam.fieldOfView * 0.5f * Mathf.Deg2Rad);
             distance = distanceH < distanceW ? distanceH : distanceW;
 
             for (int i = 0; i < Players.Count; i++)
             {
                 DesiredPos += Players[i].position;
             }
             if (distance > -10f) distance = -10f;
             DesiredPos /= Players.Count;
             DesiredPos.z = distance;
         }
 
         void LateUpdate()
         {
             transform.position = Vector3.MoveTowards(transform.position, DesiredPos, camSpeed);
         }
     }
 }

How to make a smash bros-like camera

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