move_towards_point( x, y, sp );
|x||The x position of the point to move towards.|
|y||The y position of the point to move towards.|
|sp||The speed to move at in pixels per second.|
This function simply tells the instance running the code to move
towards a set point at a set speed. Bear in mind that it is up to
you to tell it what to do once it gets there, as it won't just stop
by itself. This means that you can get a "vibrating" instance as it
moves (for example) 3 pixels forward, overshoots the x/y target
position by 2, then moves 3 pixels back again, overshooting the
target point by one and so on... There are a number of ways that
this can be avoided, for example using distance_to_point to see how
far from the specified location the instance is before moving.
Note: this function sets the speed of the instance, so even if you stop using this code, the instance will keep moving in the previous direction, so it is necessary to set the instance speed to 0 if you wish it to stop. See the code example below.
if point_distance(x, y, target.x, target.y) >
move_towards_point(target.x, target.y, 5);
else speed = 0;
The above code will move the instance towards the position of the instance indexed in the variable "target" at a speed of 5 pixels per step. Once it reaches that position the speed is set to 0.
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