6 replies to this topic

[M.D.Simmo]

I have an object (called obj_knife) that moves with a person (called obj_person). When the player attacks, I want the knife to follow a path relative to the players position.
What I currently have is:

// step event of obj_knife
if (path_not_started) {
path_start(pth_swing,8,0,false);
path_not_started = false;
}
x += obj_person.x - obj_person.xprevious 
y += obj_person.vspeed;

The problem is that when the knife is on the path, the 'x +=' and 'y +=' bit does not work.
Is there a better way to do this or a way to fix it?

[greep]

I haven't used paths very much, but perhaps path_shift could do what you want?

[M.D.Simmo]

I haven't used paths very much, but perhaps path_shift could do what you want?

I'll try that...


No it didn't work. This is code I tried:

path_shift(pth_swing,obj_person.x - obj_person.xprevious,obj_person.vspeed)

When I tried, nothing changed.

Edited by M.D.Simmo, 14 April 2012 - 05:21 AM.

[greep]

Really aboslutely nothing? I would've expected at worst it would give a screwy path... have you tried putting this in the end step event?

[M.D.Simmo]

Really aboslutely nothing? I would've expected at worst it would give a screwy path... have you tried putting this in the end step event?

Yep, no change.
I haven't tried putting it in the endstep event, but why that change it?

EDIT:
I ran some tests, and found some weird results. If someone could please explain what's happening, that would be great.

• Just trying to change the y value by y += 1:
  on the step event, this will do nothing. On the end step event, this will add 1 and never again
• Using this code:

  if !variable_local_exists('Y')    Y = y;else     Y += 1;y = Y

  On the step event, this did nothing, yet on the end step event, it worked as it should do.
  EDIT 2:
  placing it on the end step stops the y movement of the path.

Edited by M.D.Simmo, 15 April 2012 - 05:38 AM.

[kupo15]

Just wondering, is there a reason why you want it as a path? Is it a stabbing motion? Can the knife be thrown?

[M.D.Simmo]

Just wondering, is there a reason why you want it as a path? Is it a stabbing motion? Can the knife be thrown?

I want it on a path because it doesn't follow a stright path but curves and bends. I'm also probably going to use this code for later objects.