Second Life Forums Archive - Floating (Balloon-Type) Vehicle questions

Hg Beeks

llGetElement(80);

Join date: 13 Apr 2006

Posts: 134

08-03-2007 15:13

I've been working on this thing for about a month now. I've messed with every option, fiddled with everything I could think of, and tried ignoring the rules of not using ApplyImpulse on vehicles, all without success.

Those of you who've created Balloon vehicles know that they have a hover, but this hover altitude is dependent on the ground plane. This means that moving over uneven ground makes for a very unenjoyable ride.
Now, the simple fix to this is to just disable the hover efficiency, effectively making it simply a gravity-less vehicle.
However, I then come into another issue; I was using and resetting the hover altitude to, well, gain and lose altitude. And since it's no longer using that as a gauge, I have to come up with a new method.
Using the normal Linear_Motor_Direction has one of two effects - It either doesn't push the vehicle up enough, or it doesn't push the vehicle up enough and pushes it in other directions (usually backward or forward), despite the direction being <0,0,Number>.
So, is there a way to have a vehicle unconstrained to the ground plane that can go up and down without sliding around?

Shadow Subagja

Registered User

Join date: 29 Apr 2007

Posts: 354

08-03-2007 16:12

try
llSetBuoyancy(1) <-- fully buoyant, essentially counters gravity
llMoveToTarget() <-- move to a vector location (ie llGetPos + some height)

That should get you away from having to mess with the hover stuff I think.

Hg Beeks

llGetElement(80);

Join date: 13 Apr 2006

Posts: 134

08-03-2007 23:08

Tried that, and it may be my closest chance of success... Out of curiosity, what does the VEHICLE_FLAG_HOVER_GLOBAL_HEIGHT flag do? No matter what the hover altitude is set to, I won't fly with it...

Hg Beeks

llGetElement(80);

Join date: 13 Apr 2006

Posts: 134

08-08-2007 16:25

From: Shadow Subagja

try
llSetBuoyancy(1) <-- fully buoyant, essentially counters gravity
llMoveToTarget() <-- move to a vector location (ie llGetPos + some height)

That should get you away from having to mess with the hover stuff I think.

Well, this DOES work, and it has been the closest I have to success, but it seems to lock the ship in place. I can't move forward or back once I've gone up or down. When I put a llStopMoveToTarget, it would work as well, but the problem is that when I do this, it still locks the movement to just up and down until the timer is called to remove it, and the ship tends to drift up and down a lot when it's removed - IE drifting back up when I let go of Down, and visa versa.

Floating (Balloon-Type) Vehicle questions
Hg Beeks llGetElement(80); Join date: 13 Apr 2006 Posts: 134	08-03-2007 15:13 I've been working on this thing for about a month now. I've messed with every option, fiddled with everything I could think of, and tried ignoring the rules of not using ApplyImpulse on vehicles, all without success. Those of you who've created Balloon vehicles know that they have a hover, but this hover altitude is dependent on the ground plane. This means that moving over uneven ground makes for a very unenjoyable ride. Now, the simple fix to this is to just disable the hover efficiency, effectively making it simply a gravity-less vehicle. However, I then come into another issue; I was using and resetting the hover altitude to, well, gain and lose altitude. And since it's no longer using that as a gauge, I have to come up with a new method. Using the normal Linear_Motor_Direction has one of two effects - It either doesn't push the vehicle up enough, or it doesn't push the vehicle up enough and pushes it in other directions (usually backward or forward), despite the direction being <0,0,Number>. So, is there a way to have a vehicle unconstrained to the ground plane that can go up and down without sliding around?
Shadow Subagja Registered User Join date: 29 Apr 2007 Posts: 354	08-03-2007 16:12 try llSetBuoyancy(1) <-- fully buoyant, essentially counters gravity llMoveToTarget() <-- move to a vector location (ie llGetPos + some height) That should get you away from having to mess with the hover stuff I think.
Hg Beeks llGetElement(80); Join date: 13 Apr 2006 Posts: 134	08-03-2007 23:08 Tried that, and it may be my closest chance of success... Out of curiosity, what does the VEHICLE_FLAG_HOVER_GLOBAL_HEIGHT flag do? No matter what the hover altitude is set to, I won't fly with it...
Hg Beeks llGetElement(80); Join date: 13 Apr 2006 Posts: 134	08-08-2007 16:25 From: Shadow Subagja try llSetBuoyancy(1) <-- fully buoyant, essentially counters gravity llMoveToTarget() <-- move to a vector location (ie llGetPos + some height) That should get you away from having to mess with the hover stuff I think. Well, this DOES work, and it has been the closest I have to success, but it seems to lock the ship in place. I can't move forward or back once I've gone up or down. When I put a llStopMoveToTarget, it would work as well, but the problem is that when I do this, it still locks the movement to just up and down until the timer is called to remove it, and the ship tends to drift up and down a lot when it's removed - IE drifting back up when I let go of Down, and visa versa.

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Floating (Balloon-Type) Vehicle questions