Vectors

[ThinkInvisible]

I'm trying to make a homing rocket script and so far failing, so:
Can someone explain how vectors work and all the commands that deal with them?
The only one I know about is vectorDist(); and not very much about that.

Also, is there an easier way to hunt for the closest player than comparing every player's position?

EDIT: Why isn't this working?

Code: [Select]

InitContainerRadiusSearch(%aobj.position, 1000, $Typemasks::projectileobjecttype);
while(%obj = containerSearchNext())
{
if(%obj.getdatablock().getName() $= "homingCountermeasureProjectile") {
%homepl = %obj;
%cmeasured = 1;
}
}

(If no object is found it goes on to find players - which always happens)

It works when self-protection is enabled.



Figured it out: i had a return; outside of a function so it never executed the whole file

[Ad Bot]

[PurpleMetro]

Well you can ask Mesprit i'm his friend and he made this homing UFO projectile for a gun that he also made that is waaay more better than the homing projectile event add on.

[Amade]

Can someone explain how vectors work and all the commands that deal with them?

A vector is a string containing three numbers, and can represent a position or a direction. For a example, "1 0 0" is a vector. As it is normalized (meaning its "length" is 1) it is probably a direction. Something like "102.3 5.8 0.3" is probably a position. You may find the wikipedia article on Euclidean Vectors helpful.

Vector section of console function dump:
   /*! @name VectorMath
   
   Vector manipulation functions.
   @{ */
   /*!  Returns a+b. */
   virtual string VectorAdd(Vector3F a, Vector3F b) {}
   /*!  Returns a-b. */
   virtual string VectorSub(Vector3F a, Vector3F b) {}
   /*!  Returns a scaled by scalar (ie, a*scalar). */
   virtual string VectorScale(Vector3F a, float scalar) {}
   /*!  Returns a scaled such that length(a) = 1. */
   virtual string VectorNormalize(Vector3F a) {}
   /*!  Calculate the dot product of a and b. */
   virtual float VectorDot(Vector3F a, Vector3F b) {}
   /*!  Calculate the cross product of a and b. */
   virtual string VectorCross(Vector3F a, Vector3F b) {}
   /*!  Calculate the distance between a and b. */
   virtual float VectorDist(Vector3F a, Vector3F b) {}
   /*!  Calculate the length of a vector. */
   virtual float VectorLen(Vector3F v) {}
   /*!  Create an orthogonal basis from the given vector. Return a matrix. */
   virtual string VectorOrthoBasis(AngAxisF aaf) {}
   /// @}

Also, is there an easier way to hunt for the closest player than comparing every player's position?

Use a radius search:

Code: [Select]

InitContainerRadiusSearch(%center, %radius, %typemasks);
while(%obj = containerSearchNext())
{
%obj.doStuff();
}I believe the object closest to the center will end up being the first result, so you can just use an if instead of a while and it'll only call %obj.doStuff(); on the first (nearest) object.

[ThinkInvisible]

What are the args for the radiussearch? I can't get it to work right.

[Amade]

What are the args for the radiussearch? I can't get it to work right.

%center, %radius, %typemasks
Center and radius are self-explanatory of course, the typemasks are the tricky part. If you only want your missile to track players, you would just use $Typemasks::PlayerObjectType. You can get the full list of typemasks by typing $Typemasks into the console and pressing tab to cycle through them.

[ThinkInvisible]

So:

Code: [Select]

InitContainerRadiusSearch(%aobj, %radius, $Typemasks::PlayerObjectType);
if(%obj = containerSearchNext())
{
echo(%obj);
%homepl = %obj;
}
%aobj is the homing projectile
%radius... i don't know what goes here :c
%obj... what's that?
%homepl is the player to lock on to if all goes well

will that work?

[Amade]

...

%center needs to be a position - just use %aobj.position
%radius is the size of the radius search - for reference a 32x baseplate is 16 units long
%obj is the first object found by the search
your reasoning with %homepl is correct.

[ThinkInvisible]

One last thing.
How do i keep it from targeting the player who fired it?

EDIT: Oh, and give it more than one typemask. Countermeasures much?

[ThinkInvisible]

Got countermeasures figured out. Since they have priority over players, i don't need to use more than one typemask at once.

EDIT: And i think i got selfprotection running. I just had some messed-up variables.

[ThinkInvisible]

Why isn't this working?

Code: [Select]

InitContainerRadiusSearch(%aobj.position, 1000, $Typemasks::projectileobjecttype);
while(%obj = containerSearchNext())
{
if(%obj.getdatablock().getName() $= "homingCountermeasureProjectile") {
%homepl = %obj;
%cmeasured = 1;
}
}
(If no object is found it goes on to find players - which always happens)

It works when selfprotection is on, though.


Figured it out: i had a return; outside of a function so it never executed the whole file

[ThinkInvisible]

Finished up the script, pretty neat.
Features:
-Swarm L. (Fires many small rockets)
-Heavy L. (Fires a few large rockets)
-Homing L. (Fires default amount of standard rockets)
-Countermeasure L. (Fires countermeasures: rockets in play are attracted to these instead of players)
-RTB Prefs
-Self-homing toggle

Lockin'