Multiple images moving different directions

[salutsalut]

I have found this

with instance_create(
    x+lengthdir_x(80,image_angle),
    y+lengthdir_y(80,image_angle),obj_bullet)
{
 xspeed=lengthdir_x(10,other.image_angle)
 yspeed=lengthdir_y(10,other.image_angle)
}

or this one

with instance_create(
    x+lengthdir_x(80,image_angle),
    y+lengthdir_y(80,image_angle),obj_bullet)
{
 xspeed=cos(other.image_angle*pi/180)*10     //convert degrees to radians when using these
 yspeed=-sin(degtorad(other.image_angle))*10 //i think the y component needs to be flipped
}

but I can't match it with your code.

[Old Pedant]

*sigh*

Okay look at that code:

if ( x==0 || x==xmax || y==0 || y==ymax ) 
{ 
    bug.xspeed = - bug.xspeed; 
    bug.yspeed = - bug.yspeed; 
}

That can be read as "if EITHER the x or y position reaches EITHER the smallest or largest allowed value, then reverse the direction of BOTH the x and y movement."

CLEARLY that is NOT what you want. You want to reverse the x direction if x reaches the limits and *separately* reverse the y direction if y reaches the limits.

So very very simply:

if ( x==0 || x==xmax ) 
{ 
    bug.xspeed = - bug.xspeed; 
}
if ( y==0 || y==ymax ) 
{ 
    bug.yspeed = - bug.yspeed; 
}

TRY IT!

[salutsalut]

thank you, it works perfectly.

I will learn javascript one day, I promise.

[Old Pedant]

Now where in the world did you find that picture of me?

Of course, that was taken some time ago, while I still had a little hair on my head. (On the back; it doesn't show in that picture.)

<grin/>