Hello everyone,
I have been trying to get a push/pull script to work and finally I got something to at least work. I am work on a 2D game, and I am trying to push/pull a cube on a ground. The following is my script so far:
var hit : RaycastHit; //Holds some of the properties the raycast hit.
var pushforce : float = 1; // Pushing Force
var pullforce : float = 1; // Pulling Force
var forceMode : ForceMode = ForceMode.VelocityChange; //Force type
function Update () {
//Get PlatformInputController script
var rotate : PlatformInputController = GetComponent(PlatformInputController);
// Get CharacterMotor script
var jump : CharacterMotor = GetComponent(CharacterMotor);
// Check for any objects at a distance of 1
if (Physics.Raycast(transform.position, transform.forward,hit,1)) {
// If tagged pushable and Action button is pressed
if (hit.transform.gameObject.tag == "Pushable" && Input.GetButton("Action")){
// Character cannot rotate
rotate.autoRotate = false;
//Character cannot jump
jump.jumping.enabled = false;
// Get the distance between character and object position
var D : Vector3 = transform.position - hit.transform.position;
// If on the left of object and move away from the object
if (Input.GetAxis("Horizontal") < 0 && D.x < 0){
// Apply pull only when the distance is greater than 0.5
if (hit.distance>0.5){
hit.rigidbody.AddForceAtPosition(D*pullforce, hit.transform.position, forceMode);
}
}
// If on the left of object and move towards the object
if (Input.GetAxis("Horizontal") > 0 && D.x < 0){
// Apply push only when the distance is less than 0.5
if (hit.distance < 0.5){
hit.rigidbody.AddForceAtPosition(-D*pushforce, hit.transform.position, forceMode);
}
}
// If on the right of object and move towards the object
if (Input.GetAxis("Horizontal") < 0 && D.x > 0){
// Apply push only when the distance is less than 0.5
if (hit.distance<0.5){
hit.rigidbody.AddForceAtPosition(-D*pushforce, hit.transform.position, forceMode);
}
}
// If on the right of object and move away from the object
if (Input.GetAxis("Horizontal") > 0 && D.x > 0){
// Apply pull only when the distance is greater than 0.5
if (hit.distance>0.5){
hit.rigidbody.AddForceAtPosition(D*pullforce, hit.transform.position, forceMode);
}
}
}
// Otherwise character can rotate and jump again
else{
rotate.autoRotate = true;
jump.jumping.enabled = true;
}
}
}
This script works fine(I have commented it if there is still anything not clear please ask), but when in action it is not smooth at all. Two problems that I notice is that my force is dependent on the distance of my character to the cube hence sometimes I get a fast motion and sometimes I get a slow motion when I push or pull. The other problem I have is that when I have the rotation of the cube not fixed, if I try to push or pull the cube it will start moving by rotating forward or backward. At the end I need the rotation to be not fixed since I want to throw the cube of a ledge and it should rotate by gravity as it falls. So making the cube fixed rotation is not an option for me.
I am new to Unity and scripting and I hope if anyone can at least lead me to the right direction of thinking, or what methods I should use in order to have a more solid script.
Any help is appreciated.
Thank you very much.
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