Directional Movement

The Directional Movement behavior makes the associated entity perform a directional movement on the 2D plane. It features:

• A direction vector that specifies the direction of the movement
• A movement speed, a scalar value given in pixels per second

You may control the direction of the movement using the direction vector or an angle given in degrees. Additionally, you may control the speed of the movement simply by changing its value.

Directional Movement is very versatile. You can use it to implement many things: different types of baddies, flying objects, racing cars viewed from a top-down view, simple projectiles, and much more.

Example

//
// The example below shows how to make an entity move to the
// right of the screen at a rate of 60 pixels per second
//
using SurgeEngine.Actor;
using SurgeEngine.Vector2;
using SurgeEngine.Behaviors.DirectionalMovement;

object "Simple Ball" is "entity"
{
    actor = Actor("Simple Ball");
    movement = DirectionalMovement();

    state "main"
    {
        movement.direction = Vector2.right;
        movement.speed = 60;
    }
}

Factory

Behaviors.DirectionalMovement

DirectionalMovement()

Spawns a DirectionalMovement.

Returns

A DirectionalMovement object.

Properties

speed

speed: number.

The speed of the movement, in pixels per second.

direction

direction: Vector2 object.

The direction of the movement.

angle

angle: number.

The counterclockwise angle of the direction vector, in degrees. 0 means right, 90 means up, etc.