Sprite doesn't show up after telling it to move - c#

In my most recent code update the sprite doesn't want to show anymore before I could pull the prefab into the hierarchy and it would show and it will still do that. But whenever I spawn it in with code the image doesn't show. The update I did spawns the sprites and then moves them down a path. I can see the sprite move in the inspector but can't see it on screen.
MoveEnemy script
public class MoveEnemy : MonoBehaviour
{
[HideInInspector]
public GameObject[] waypoints;
private int currentWaypoint = 0;
private float lastWaypointSwitchTime;
public float speed = 1.0f;
// Start is called before the first frame update
void Start()
{
lastWaypointSwitchTime = Time.time;
}
// Update is called once per frame
void Update()
{
// 1
Vector3 startPosition = waypoints
[currentWaypoint].transform.position;
Vector3 endPosition = waypoints[currentWaypoint + 1].transform.position;
// 2
float pathLength = Vector3.Distance(startPosition, endPosition);
float totalTimeForPath = pathLength / speed;
float currentTimeOnPath = Time.time - lastWaypointSwitchTime;
gameObject.transform.position = Vector2.Lerp(startPosition, endPosition, currentTimeOnPath / totalTimeForPath);
// 3
if (gameObject.transform.position.Equals(endPosition))
{
if (currentWaypoint < waypoints.Length - 2)
{
// 3.a
currentWaypoint++;
lastWaypointSwitchTime = Time.time;
// TODO: Rotate into move direction
}
else
{
// 3.b
Destroy(gameObject);
AudioSource audioSource = gameObject.GetComponent<AudioSource>();
AudioSource.PlayClipAtPoint(audioSource.clip, transform.position);
// TODO: deduct health
}
}
}
}
// Credit raywenderlich.com
SpawnEnemy script
public class SpawnEnemy : MonoBehaviour
{
public GameObject[] waypoints;
public GameObject testEnemyPrefab;
// Start is called before the first frame update
void Start()
{
Instantiate(testEnemyPrefab).GetComponent<MoveEnemy>().waypoints = waypoints;
}

Whenever I changed the camera render mode the screen space moved but the sprite didn't so I just had to move it back into the screen space.

I think objects spawning behind the camera. Move the camera a bit back. Set the view to 3d world space. Then move the camera along z axis. Or change the spawnpoint's z axis.

Related

Unity3D FollowCam not following player vehicle

I have a garage that gives the option for the player to select the car he wants to take to the race, the problem is the camera doesn't attach to the when it's sent.
The follow camera is using the standard unity assets.
Garage code(This code loads the car into the map):
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;
public class LoadCharacter : MonoBehaviour
{
public GameObject[] characterPrefabs;
public Transform spawnPoint;
//public TMP_Text label;
void Start()
{
int selectedCharacter = PlayerPrefs.GetInt("selectedCharacter");
GameObject prefab = characterPrefabs[selectedCharacter];
GameObject clone = Instantiate(prefab, spawnPoint.position, Quaternion.identity);
//label.text = prefab.name;
}
}
Camera code:
using System;
using UnityEngine;
#if UNITY_EDITOR
#endif
namespace UnityStandardAssets.Cameras
{
[ExecuteInEditMode]
public class AutoCam : PivotBasedCameraRig
{
[SerializeField] private float m_MoveSpeed = 3; // How fast the rig will move to keep up with target's position
[SerializeField] private float m_TurnSpeed = 1; // How fast the rig will turn to keep up with target's rotation
[SerializeField] private float m_RollSpeed = 0.2f;// How fast the rig will roll (around Z axis) to match target's roll.
[SerializeField] private bool m_FollowVelocity = false;// Whether the rig will rotate in the direction of the target's velocity.
[SerializeField] private bool m_FollowTilt = true; // Whether the rig will tilt (around X axis) with the target.
[SerializeField] private float m_SpinTurnLimit = 90;// The threshold beyond which the camera stops following the target's rotation. (used in situations where a car spins out, for example)
[SerializeField] private float m_TargetVelocityLowerLimit = 4f;// the minimum velocity above which the camera turns towards the object's velocity. Below this we use the object's forward direction.
[SerializeField] private float m_SmoothTurnTime = 0.2f; // the smoothing for the camera's rotation
private float m_LastFlatAngle; // The relative angle of the target and the rig from the previous frame.
private float m_CurrentTurnAmount; // How much to turn the camera
private float m_TurnSpeedVelocityChange; // The change in the turn speed velocity
private Vector3 m_RollUp = Vector3.up;// The roll of the camera around the z axis ( generally this will always just be up )
protected override void FollowTarget(float deltaTime)
{
// if no target, or no time passed then we quit early, as there is nothing to do
if (!(deltaTime > 0) || m_Target == null)
{
return;
}
// initialise some vars, we'll be modifying these in a moment
var targetForward = m_Target.forward;
var targetUp = m_Target.up;
if (m_FollowVelocity && Application.isPlaying)
{
// in follow velocity mode, the camera's rotation is aligned towards the object's velocity direction
// but only if the object is traveling faster than a given threshold.
if (targetRigidbody.velocity.magnitude > m_TargetVelocityLowerLimit)
{
// velocity is high enough, so we'll use the target's velocty
targetForward = targetRigidbody.velocity.normalized;
targetUp = Vector3.up;
}
else
{
targetUp = Vector3.up;
}
m_CurrentTurnAmount = Mathf.SmoothDamp(m_CurrentTurnAmount, 1, ref m_TurnSpeedVelocityChange, m_SmoothTurnTime);
}
else
{
// we're in 'follow rotation' mode, where the camera rig's rotation follows the object's rotation.
// This section allows the camera to stop following the target's rotation when the target is spinning too fast.
// eg when a car has been knocked into a spin. The camera will resume following the rotation
// of the target when the target's angular velocity slows below the threshold.
var currentFlatAngle = Mathf.Atan2(targetForward.x, targetForward.z)*Mathf.Rad2Deg;
if (m_SpinTurnLimit > 0)
{
var targetSpinSpeed = Mathf.Abs(Mathf.DeltaAngle(m_LastFlatAngle, currentFlatAngle))/deltaTime;
var desiredTurnAmount = Mathf.InverseLerp(m_SpinTurnLimit, m_SpinTurnLimit*0.75f, targetSpinSpeed);
var turnReactSpeed = (m_CurrentTurnAmount > desiredTurnAmount ? .1f : 1f);
if (Application.isPlaying)
{
m_CurrentTurnAmount = Mathf.SmoothDamp(m_CurrentTurnAmount, desiredTurnAmount,
ref m_TurnSpeedVelocityChange, turnReactSpeed);
}
else
{
// for editor mode, smoothdamp won't work because it uses deltaTime internally
m_CurrentTurnAmount = desiredTurnAmount;
}
}
else
{
m_CurrentTurnAmount = 1;
}
m_LastFlatAngle = currentFlatAngle;
}
// camera position moves towards target position:
transform.position = Vector3.Lerp(transform.position, m_Target.position, deltaTime*m_MoveSpeed);
// camera's rotation is split into two parts, which can have independend speed settings:
// rotating towards the target's forward direction (which encompasses its 'yaw' and 'pitch')
if (!m_FollowTilt)
{
targetForward.y = 0;
if (targetForward.sqrMagnitude < float.Epsilon)
{
targetForward = transform.forward;
}
}
var rollRotation = Quaternion.LookRotation(targetForward, m_RollUp);
// and aligning with the target object's up direction (i.e. its 'roll')
m_RollUp = m_RollSpeed > 0 ? Vector3.Slerp(m_RollUp, targetUp, m_RollSpeed*deltaTime) : Vector3.up;
transform.rotation = Quaternion.Lerp(transform.rotation, rollRotation, m_TurnSpeed*m_CurrentTurnAmount*deltaTime);
}
}
}
This are the cars that the map gets from the selection
This is the follow cam
This is what happens when the player chooses the car, it switches places with an empty object
The only way to follow is if I go in the editor and manually drag the car into the follow
Edit: I found a way to work around it, anyone wondering you just have to make a prefab with the car and camera.

How to shoot ball to Touch X position Unity 3D?

I have a ball on a ground, and when touching the screen I want to shoot it to the X position of the Touch. Do you have any suggestions?
This is the code I have so far:
public Rigidbody Ball;
public float Speed = 50f;
void FixedUpdate () {
if(ClickDone == false){
if (Input.GetMouseButton(0)){
ClickDone = true;
Ball.velocity = transform.forward * Speed;
}
}
}
here is your new code :
using UnityEngine;
public class GoToTouch : MonoBehaviour
{
public Camera cam;//put your main camera here
public float speed;//Speed of movement
Vector3 LastTouch;
void Start()
{
LastTouch = Vector3.zero;
}
void Update()
{
//We check for new touches etch frame
if (Input.touchCount> 0)
LastTouch = Input.touches[0].rawPosition;
//We move towards the last touch
if(LastTouch != Vector3.zero)transform.position=
Vector3.Lerp(transform.position,cam.ScreenToWorldPoint(LastTouch),speed*Time.DeltaTime);
}
}
what is important for you to look at is the
ScreenToWorldPoint function LastTouch holds the actual pixel the user touched
after ScreenToWorldPoint you get the position that the pixel he touched represent in the
world. Good luck learning !

How to move the camera up the Y axis only when the player reaches the top 1/2 of the screen in Unity C#

This is for a 2D platform game.
I don't want the camera to move up the Y axis when the player jumps. I only want it to move when the player to the upper part of the screen so it can scroll up to vertical platforms and ladders.
Does anybody know what to enter in the code and the Unity editor so that can be done?
Here's the code I have so far in the camera script.
public class CameraControl : MonoBehaviour {
public GameObject target;
public float followAhead;
public float smoothing;
private Vector3 targetPosition;
// Use this for initialization
void Start () {
}
// Update is called once per frame
void Update () {
targetPosition = new Vector3 (target.transform.position.x, transform.position.y, transform.position.z);
if (target.transform.localScale.x > 0f) {
targetPosition = new Vector3 (targetPosition.x + followAhead, targetPosition.y, targetPosition.z);
} else {
targetPosition = new Vector3 (targetPosition.x - followAhead, targetPosition.y, targetPosition.z);
}
transform.position = Vector3.Lerp (transform.position, targetPosition, smoothing * Time.deltaTime);
}
}
I guess you have a bool tied to the jump which triggers the jumping animation.
So, in the Update() of the camera you can do something like this:
void Update() {
// Update camera X position
if (isPlayerJumping) return;
// Update camera Y position
}
This way, you update the Y position of the camera only if the player isn't jumping, while still updating the X position in all cases (even while jumping).

Switching between two or more cameras unity3D

I'm making a game in which the player controls two different characters (each one has its own empty object with a camera as child), and switchs one or another by pressing the control key. The thing is, I'm trying to make a little transition between both characters cameras by using another camera, so it doesn't just teleports between one and another but I can't seem to do it. I tried with lerp but I don't know if I got it right, so I read and tried Vector3.MoveTowards but still couldn't do it. This is my code so far (the while is because a last-moment-braindead I had):
public class CameraController : MonoBehaviour
{
public Camera cam1;
public Camera cam2;
public Camera movingCamera;
public bool isCurrentPlayer;
public Transform target1;
public Transform target2;
public float speed = 0.2f;
void FixedUpdate()
{
float step = speed * Time.deltaTime;
if (Input.GetButtonDown("Control"))
{
if (isCurrentPlayer)
{
movingCamera.enabled = true;
cam2.enabled = false;
while (transform.position != target1.position)
{
transform.position = Vector3.MoveTowards(transform.position, target1.position, step);
}
if (transform.position == target1.transform.position)
{
movingCamera.enabled = false;
cam1.enabled = true;
}
isCurrentPlayer = false;
}
else if (!isCurrentPlayer)
{
movingCamera.enabled = true;
cam1.enabled = false;
while (transform.position != target2.position)
{
transform.position = Vector3.MoveTowards(transform.position, target2.position, step);
}
if (transform.position == target2.transform.position)
{
movingCamera.enabled = false;
cam2.enabled = true;
}
isCurrentPlayer = true;
}
}
}
I'm curious about two things. Why did you use FixedUpdate to manage your updates? This isn't physics code. Is there a particular reason you are using multiple cameras? If I may, I propose the following changes.
You can simply make use of the main camera instead of multiple cameras. Additionally, you can increase the number of player objects you can toggle through by using an array of player GameObjects, and by changing the input parameters to left control and right control, you can toggle between next player and previous player to navigate bi-directionally through the array of players.
Here's my example code that implements these changes (tested and works, though improvements can be made.)
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
// Attached to Main Camera
public class CameraController : MonoBehaviour {
// set manually in inspector
public GameObject[] players;
public float movementSpeed = 1.0f;
public float rotationSpeed = 1.0f;
private int currentPlayer;
private float startTime;
private float distanceToPlayer;
private Vector3 startPosition;
private Quaternion startOrientation;
// Use this for initialization
void Start () {
currentPlayer = 0;
ResetCamera();
}
// Update is called once per frame
void Update () {
float distanceCovered;
float rotationCovered;
float fractionTraveled;
// switch to previous
if (Input.GetButtonDown("left ctrl")) {
if (currentPlayer == 0) currentPlayer = players.Length - 1;
else currentPlayer--;
ResetCamera();
}
// switch to nextPlayer
if (Input.GetButtonDown("right ctrl")) {
if (currentPlayer == players.Length - 1) currentPlayer = 0;
else currentPlayer++;
ResetCamera();
}
// Keep moving camera
if (transform.position != players[currentPlayer].transform.position)
{
distanceCovered = (Time.time - startTime) * movementSpeed;
fractionTraveled = distanceCovered / distanceToPlayer;
rotationCovered = (Time.time - startTime) * rotationSpeed;
// Lerp to player position
transform.position = Vector3.Lerp(
startPosition,
players[currentPlayer].transform.position,
fractionTraveled
);
// match player orientation
transform.rotation = Quaternion.RotateTowards(
transform.rotation,
players[currentPlayer].transform.rotation,
rotationCovered
);
// Stop moving camera
} else {
// Match orientation
if (transform.rotation != players[currentPlayer].transform.rotation)
transform.rotation = players[currentPlayer].transform.rotation;
// Set parent transform to current player
transform.parent = players[currentPlayer].transform;
}
}
void ResetCamera() {
transform.parent = null;
startTime = Time.time;
startPosition = transform.position;
startOrientation = transform.rotation;
distanceToPlayer = Vector3.Distance(
transform.position,
players[currentPlayer].transform.position
);
}
}
Obviously the values would need to be tweaked, and the movement algorithm is pretty basic. Crude but function. You can also add player movement code into the camera, just make sure it points to players[currentPlayer] and it will work for each of your player objects without having to use additional scripts unless there is a reason to do so.
Feel free to use this code. Like I said, it works. However, should you choose to do so, it can easily be modified to function like your original code simply by removing the array and reinstating the individual GameObjects.
transform.position points to the position of CameraController game object. If you want to move movingCamera you probably want to use movingCamera.transform.position. Also keep in mind that in your script the MoveTowards() would only fire when you are pressing your "Control" button.
As memBrain said it would be the best practice to use only one camera for this - visually it would look the same.
The script should look something like this:
// Assuming target1 is player 1 and target2 is player 2
private float snapThreshold = 0.1f;
private Vector3 movingCameraDestination = Vector3.zero;
void FixedUpdate()
{
if(Input.GetButtonDown("Control"))
{
if(isCurrentPlayer)
{
//Set position of transition camera to player 1 and set it's destination to player's 2 position
movingCamera.transform.position = player1.position;
movingCameraDestination = player2.position;
//Disable player 1 camera and enable transition camera
cam1.enabled = false;
movingCamera.enabled = true;
}
else
{
//Set position of transition camera to player 21 and set it's destination to player's 1 position
movingCamera.transform.position = player2.position;
movingCameraDestination = player1.position;
//Disable player 1 camera and enable transition camera
cam2.enabled = false;
movingCamera.enabled = true;
}
}
//If transition camera is enabled and its destination is not Vector3.zero - move it
if(movingCameraDestination != Vector3.zero && movingCamera.enabled)
{
movingCamera.transform.position = Vector3.Lerp(movingCamera.transform.position, movingCameraDestination, speed * Time.deltaTime);
//If the distance between transition camera and it's destination is smaller or equal to threshold - snap it to destination position
if(Vector3.Distance(movingCamera.transform.position, movingCameraDestination) <= snapThreshold)
{
movingCamera.transform.position = movingCameraDestination;
}
//If transition camera reached it's destination set it's destination to Vector3.zero and disable it
if(movingCamera.transform.position == movingCameraDestination)
{
movingCameraDestination = Vector3.zero;
movingCamera.enabled = false;
}
}
}

Unity 5 - edit the camera2DFollow script

I'm using the standard camera2DFollow script that comes with Unity 5. But I have a problem with the position of the camera. I've rotated my main camera and it looks like this now.
You see that my player is on top of the screen instead of the middle.
This is the default script in C# for the people who don't have it.
using System;
using UnityEngine;
namespace UnityStandardAssets._2D
{
public class Camera2DFollow : MonoBehaviour
{
public Transform target;
public float damping = 1;
public float lookAheadFactor = 3;
public float lookAheadReturnSpeed = 0.5f;
public float lookAheadMoveThreshold = 0.1f;
private float m_OffsetZ;
private Vector3 m_LastTargetPosition;
private Vector3 m_CurrentVelocity;
private Vector3 m_LookAheadPos;
// Use this for initialization
private void Start()
{
m_LastTargetPosition = target.position;
m_OffsetZ = (transform.position - target.position).z;
transform.parent = null;
}
// Update is called once per frame
private void Update()
{
// only update lookahead pos if accelerating or changed direction
float xMoveDelta = (target.position - m_LastTargetPosition).x;
bool updateLookAheadTarget = Mathf.Abs(xMoveDelta) > lookAheadMoveThreshold;
if (updateLookAheadTarget)
{
m_LookAheadPos = lookAheadFactor*Vector3.right*Mathf.Sign(xMoveDelta);
}
else
{
m_LookAheadPos = Vector3.MoveTowards(m_LookAheadPos, Vector3.zero, Time.deltaTime*lookAheadReturnSpeed);
}
Vector3 aheadTargetPos = target.position + m_LookAheadPos + Vector3.forward*m_OffsetZ;
Vector3 newPos = Vector3.SmoothDamp(transform.position, aheadTargetPos, ref m_CurrentVelocity, damping);
transform.position = newPos;
m_LastTargetPosition = target.position;
}
}
}
I want to change the Y to a +3 of the current position. So if my camera is on Y 2 than put it on Y 5. (This makes it so the player is in the middle and not on the top).
Thanks for the help!
You can do this by adding 3 to the camera's position at the end of each frame but I recommend against it.
What I would do, is create an empty object, name it "PlayerCameraCenter" and make the player parent to this object; then place the camera center wherever you want relative to the player, like y = 3, and make the camera follow this object instead of the player.
This way you can easily change the position of the camera, through the editor without fiddling with code.

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