Target cone

[MadRat]

Is there any way we could get support for a target cone, basically the opposite of the aiming cone, so that we can specify exact parts of a target to aim? I would think the code for aiming could be largely recycled here, with a simple check to see if the aim point and target point are both in their respective cones.

I want to be able to simulate tailchasing weapons.

[KDR_11k]

I think you could lua that by simply preventing the weapon from shooting if it's in the wrong place.

[Zpock]

This can be easily LUA:ed (tm), combined with some cob hacking.

I'd wait for better LUA to weapon interfacing tough.

[MadRat]

So how do I query the location and direction variables of the target in LUA?

[Zpock]

http://spring.clan-sy.com/wiki/Lua_Scripting

More precisely:

Spring.GetUnitPosition

( number unitID ) -> nil | number x, number y, number z

Spring.GetUnitBasePosition

( number unitID ) -> nil | number x, number y, number z

Spring.GetUnitDirection

( number unitID ) -> nil | number dx, number dy, number dz

Spring.GetUnitHeading

( number unitID ) -> nil | number heading

[MadRat]

How do I know what unit is the target?

[Zpock]

The parameter of the attack command.

[trepan]

Adding a COB function would probably be the best way to do this.

How about something like:

Code: Select all

// targetID = unitID or (featureID + offset) or 0 for ground target?
AllowShot(weaponNum, targetID)
  if (MyTestGoesHere(weaponNum, targetID)) {
    return 1;
  } else {
    return 0;
  }
}

The AimPrimary() COB function can be used to block shots, but
it will only do so if forwardOnly is not enabled. The other problem
is that you wont know what the target is.

It might be better to set this up for an immediate return value.

[FLOZi]

A cleaner way to script-limit weapons would be epic.

[trepan]

I have it coded as the following:

Code: Select all

AllowShot1(unitID, retval)
{
  // unitID = 0  for  ground targets
  if ( the shot should not be fired ) {
    retval = 0;
  }
  return (whatever);
}

AllowShot2() ...

Now I just need to test it

[trepan]

Would yall prefer BlockShot#() ?

Code: Select all

BlockShot1(unitID, blockShot)
{
  // unitID = 0  for  ground targets
  if ( the shot should not be fired ) {
    blockShot = 1;
  }
  return (whatever);
} 

[Snipawolf]

Would yall prefer BlockShot#() ?

A hint of southern! Oh noez!

[Zpock]

I would like FireShot(unitID,weapon#,targetID)

[FLOZi]

I'm not bothered about the name, why give a unitID of 0 for ground targets?

[trepan]

It has to be something, and i'd rather not limit the call to just
unit target shots. UnitID = 0 is used in other parts of cobs to
indicate a null unit (check some of the GET calls...)

P.S. I changed it to BlockShot#(unitID, block), where block
is the return value, and its input state is 0.

[FLOZi]

Oh, I get what you mean now. Thought you were returning 0 for any non-vtol unit.

edit: also, I thought unitids started at 0 anyway?

[rattle]

When is BlockShotX(...) getting called? I don't really get this yet... :(

[MadRat]

So are units that a weapon slot cannot target given an ID of 0, too?

[trepan]

BlockShot#() is called just before the shot is fired.

[rattle]

So technically the unit succesfully aims but you keep it from firing.