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Rigidbody2D.AddForce

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public method AddForce(force: Vector2, mode: ForceMode2D = ForceMode2D.Force): void;
public void AddForce(Vector2 force, ForceMode2D mode = ForceMode2D.Force);

Parameters

forceComponents of the force in the X and Y axes.
modeThe method used to apply the specified force.

Description

Apply a force to the rigidbody.

The force is specified as two separate components in the X and Y directions (there is no Z direction in 2D physics). The object will be accelerated by the force according to the law force = mass x acceleration - the larger the mass, the greater the force required to accelerate to a given speed.

See Also: AddForceAtPosition, AddTorque, mass, velocity,, AddForce, ForceMode2D.

no example available in JavaScript
// The sprite will fall under its weight.  After a short time the
// sprite will start its upwards travel.  This is because
// of the force on the sprite.

using UnityEngine; using System.Collections;

public class Example : MonoBehaviour { public Texture2D tex;

private Rigidbody2D rb2D; private Sprite mySprite; private SpriteRenderer sr; private float thrust = 10.0f;

void Awake() { sr = gameObject.AddComponent<SpriteRenderer>(); rb2D = gameObject.AddComponent<Rigidbody2D>(); }

void Start() { mySprite = Sprite.Create(tex, new Rect(0.0f, 0.0f, 128.0f, 128.0f), new Vector2(0.5f, 0.5f), 100.0f);

sr.color = new Color(0.9f, 0.9f, 0.5f, 1.0f); sr.sprite = mySprite; transform.position = new Vector3(0.0f, -2.0f, 0.0f); }

void Update() { rb2D.AddForce(transform.up * thrust); } }

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