Random movement

Table of Contents

• Methods inherited from movement
• Methods of the type random movement
  • random_movement:get_speed()
  • random_movement:set_speed(speed)
  • random_movement:get_angle()
  • random_movement:get_max_distance()
  • random_movement:set_max_distance(max_distance)
  • random_movement:is_smooth()
  • random_movement:set_smooth([smooth])
• Events inherited from movement

This type of movement is a rectilinear movement whose trajectory changes randomly over time. It can be seen as a particular case of the straight movement type, where the angle is automatically changed after random delays.

Methods inherited from movement

Random movements are particular movement objects. Therefore, they inherit all methods from the type movement.

See Methods of all movement types to know these methods.

Methods of the type random movement

The following methods are specific to random movements.

random_movement:get_speed()

Returns the speed applied to this movement when it is started.

• Return value (number): The speed in pixels per second.

random_movement:set_speed(speed)

Sets the speed applied to this movement when it is started.

• speed (number): The new speed in pixels per second.

random_movement:get_angle()

Returns the angle of the current trajectory in radians.

East is 0, North is math.pi / 2, West is math.pi, South is 3 * math.pi / 2 and any intermediate value is possible.

• Return value (number): The angle in radians.

Remarks

If you prefer a value in a 4-direction system, see movement:get_direction4().

random_movement:get_max_distance()

Returns the maximum distance of this movement.

If the movement goes further than this distance, it automatically comes back towards the initial position.

• Return value (number): The maximum distance in pixels (0 means no limit).

random_movement:set_max_distance(max_distance)

Sets the maximum distance of this movement.

If the movement goes further than this distance, it automatically comes back towards the initial position.

• max_distance (number): The maximum distance in pixels (0 means no limit).

random_movement:is_smooth()

Returns whether this movement adjusts its trajectory when an obstacle of the map is reached. This property has no effect if the movement is not attached to a map entity or if the movement ignores obstacles.

• Return value (boolean): true if this movement is smooth.

random_movement:set_smooth([smooth])

Sets whether this movement should adjust its trajectory when an obstacle of the map is reached. This property has no effect if the movement is not attached to a map entity or if the movement ignores obstacles.

• smooth (boolean, optional): true to make this movement smooth. No value means true.

Events inherited from movement

Random movements are particular movement objects. Therefore, they inherit all events from the type movement.

See Events of all movement types to know these events.