koobas.hobune.stream
Invert gameobject movement gradually when reaching a certain Vector3
I'm working on a 2D game and I have a script to move an object to a certain position with a constant speed using Vector3.MoveTowards but now, I need to simulate gravity in order that it reverts the direction of the object when it reaches a certain "limit" on Z axis.
I could use a fixed value for gravity but the problem is that the speed of my object can be something between 10 and 20 when it starts moving...
Here's an image demonstrating what I want:
So, how can I do that? Is there any way to get the value of gravity to use in order that the object inverts on the given "limit" based on it's speed?
so you want to make sure the objects fall mirrors its rise?
SOURCED:: http://forum.unity3d.com/threads/12588-Projection-Trajectory-Arc
function GetQuadraticCoordinates(t : float) : Vector3 {
return Mathf.Pow(1-t,2)*p0 + 2*t*(1-t)*c0 + Mathf.Pow(t,2)*p1 ;
}
where:
p0 - is the start point
p1 - is the end point
c0 - is the middle point ( controlling the arcness )
t - between 0 and 1
so use the equation
void update()
{
transform.position = vector3.slerp(currentPos, getquadcoordiantes(speed * time.deltatime), 1);
}
that should work I think
So, p0 is my bottom right point of the curved line in the image? But what about the other two? Which one is the value of "limit"? And I don't have the value of the bottom left point. I want it to be calculated automatically.
limit is the midpoint you calculate
you can yourself autocalculate the endpoint
endpoint is
int Xmod;
int Zmod;
if(startpoint.x > midpoint.x)
Xmod = startpoint.x - midpoint.x
else
Xmod = midpoint.x - startpoint.x
if(startpoint.z > midpoint.z)
Zmod = startpoint.z - midpoint.z
else
Zmod = midpoint.z - startpoint.z
that gets you the distance between the start and mid which is half way
now we double that to get the end pos
so
endposition.set(startposition.x + Xmod * 2, startposition.y, startposition.z + Zmod * 2);
that gets us the end.
this assumes you figured out the co-ordinates of the mid. I dont know what your wanting enough to know how you find that but yea i mean its the mid point you decide on, its the limit point.
