Rigidbody2D.AddForce

Parameters

Description

Применяет силу к твердому телу.

Сила точно определена как два отдельных компонента к направлении осей X и Y (в 2D физике нет направления по оси Z). Объект будет ускорен по силе в соответствии с законом "сила = масса * скорость" - чем больше масса, тем больше сила, требуемая для ускорения к данной скорости.

If you don’t specify a ForceMode2D the default will be used. The default in this case is ForceMode2D.Force which adds force over time, using mass.

To use the example scripts below, drag and drop your chosen script onto a Sprite in the Hierarchy. Make sure that the Sprite has a Rigidbody2D component.

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

// The sprite will fall under its weight.  After a short time the
// sprite will start its upwards travel due to the thrust force that
// is added in the opposite direction.

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour
{
    public Texture2D tex;

    private Rigidbody2D rb2D;
    private Sprite mySprite;
    private SpriteRenderer sr;
    private float thrust = 1f;

    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 FixedUpdate()
    {
        rb2D.AddForce(transform.up * thrust);
        // Alternatively, specify the force mode, which is ForceMode2D.Force by default
        rb2D.AddForce(transform.up * thrust, ForceMode2D.Impulse);
    }
}