move object

Questions & Answers
1

I have an object

and then it wants to move the semi-circle

how?
Example
move to A until B

A alt textB

But follow the line

sry my english bad…

Can somebody help me???

Thx

2

Note :This answer will suite for Arc Movements (not for semi-circle)

Hi ardy3344,

have you ever tried with lerp movement for objects. if you use lerp movements using Vector3.lerp it would be easy.

First you need find the distance between A and B and divide the distance by 2.here you’ll get half distance right ? . you can find the center point from here. add the half distance with A or minus from B.

After this process you’ll get the midpoint for A and B. now increase Y-axis for 5 units and consider it as midpoint.

now you want to use Vector3.Lerp for A to midpoint, then midpoint to B. and you can do movements with time in lerp.

1st movement :

Vector3.lerp(GameObject.Find(A).transform.position,midpoint.transform.position,time);

2nd movement : 

Vector3.lerp(midpoint.transform.position,GameObject.Find(B).transform.position,time);

you have to increase time in loops. sure you’ll get good arc movements.

I gave you the procedure for doing it simply. you may code it now.

3

Just use Trig. Break out your highschool geomtry book :), you know you want to . . .

// between 0 and 2 Mathf.PI.
float mPosition = 0F;
float mRadius = 5F;
void Update () {
	mPosition += .01F;
	transform.position = new Vector3(Mathf.Sin(mPosition)*mRadius, 0, Mathf.Cos(mPosition)*mRadius);
}
4

Has anyone found the exact answer to this question? I am looking for something similar.

5

You need to discover the center between A and B. Let’s call this centerPosition. And your object be at A:

transform.RotateAround (centerPosition, Vector3(0,0,-1), 75*Time.deltaTime);

This will make the object do a circular movement. You will need to check if your object is already at B.

And know the B position is easy, is the same distance between A and the centerPosition.

6

I know that this is an old question but I was trying to accomplish a similar thing so I thought why not post my solution here. After looking this page (Transformations of Functions and their Graphs) I played a little bit with the half circle function and managed to create the following code which should give you what you want.

// Private Instance variables
private float speed;
private float counter;
private float length;
private float height;
private Vector3 startPosition;
private Vector3 currentPosition;

// 
void Start()
{
	startPosition = transform.position;
	currentPosition =  Vector3.zero;
	speed = 1f;
	counter = 0f;
	length = 30f;
	height = 30f;
}

// 
void Update()
{
	counter += speed * Time.deltaTime;
	currentPosition.x = Mathf.Sin(counter) * (length / 2f);
	currentPosition.y = Mathf.Sqrt((Mathf.Pow((length / 2f), 2f)) - Mathf.Pow(pos.x, 2f)) / ((length / 2f) / height);
	transform.position = currentPosition + startPosition;
}