koobas.hobune.stream
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Moving object between points
Hello, I want to make an object move from point A: Vector3(-7, 1, 153) to point B: Vector3(7, 1, 153) but i want this object to start moving from position Vector3(1, 1, 153) and then go left to A and right to B all the time.
Right now i have something like this:
public Rigidbody cube;
public float speed = 1f;
Vector3 pointA;
Vector3 pointB;
Vector3 pointC;
void Start()
{
pointA = new Vector3(1, 1, 153);
pointB = new Vector3(-7, 1, 153);
pointC = new Vector3(7, 1, 153);
}
void Update()
{
float time = Mathf.PingPong(Time.time * speed, 1);
transform.position = Vector3.Lerp(pointA, pointB, time);
}
}
but by this code my object move from starting position to the A point only and bouncing between them. How can I make it move like startingPosition>A point>B point>A point>B point etc.?
And side question, how can i change the speed of this object?
Note how your target vectors A, B and C are really a list, so it can be beneficial to express them as such, too. In below, we're assigning the vectors to an array, and can then use a neat targetIndex to move towards them, as well as switch to the next goal when needed.
using UnityEngine;
public class Mover : MonoBehaviour
{
const float speed = 50f;
Vector3[] targets = null;
int targetIndex = 0;
void Start()
{
targets = new Vector3[]
{
new Vector3(1f, 1f, 153f),
new Vector3(-7f, 1f, 153f),
new Vector3(7f, 1f, 153f)
};
}
void Update()
{
FollowTarget();
}
void FollowTarget()
{
Vector3 target = targets[targetIndex];
transform.position = Vector3.MoveTowards(
transform.position, target, speed * Time.deltaTime);
if (transform.position == target) { ChooseNextTarget(); }
}
void ChooseNextTarget()
{
switch (targetIndex)
{
case 0: targetIndex = 1; break;
case 1: targetIndex = 2; break;
case 2: targetIndex = 1; break;
}
}
}
Speed can be increased by increasing the speed value at the top.
Now, it looks like you're using a rigidbody, too. If so, you normally want to try move it via either AddForce() applied in the proper direction, or its MovePosition() function, and for the latter, do so in a FixedUpdate() by using time.fixedDeltaTime. Otherwise, things like collision push forces may not be appropriately applied in the physics simulation.
Good luck!
