Can You Explain 2d Movement in C#?

Hi! I was wondering if someone could tell me the basic 2d platformer movement for C#. I know you'll need a 2d rigid body for gravity but I don't know how to get the player to move side to side and jump. Thanks.

 

Affect the transform.position.x and transform.position.y, do not touch transform.position.z
Usually use Addforce() in FixedUpdate() to move the rigidbody2D
Also you will probbaly need to use Orthographic camera.

 

Really? That simple? Ok, but how do u make it jump?

 

rigidbody2D.AddForce(new Vector2(0, jumpPower));

 

be aware that the shortcut reference to rigidbody2D is a unity 4 thing, http://docs.unity3d.com/ScriptReference/GameObject-rigidbody2D.html
left/right movement is basically rigidbody2D.AddForce(new Vector2(movespeed, 0));
You can see that the addforce is adding x,y and you just use what you need.
Sometimes you need to set velocity to 0,0 before you add force in situations where you don't want the jump or movement to add to existing momentum.