Siren on other cars than police, fire and EMS

[dragonofdark]

Hello all,

I was wondering if it's possible to put the police siren on a normal car (so not the police, fire and EMS) with a script ?

If it's not possible, do you think that that will be possible in further versions of MTA ?

Thanks in advance,

dragonofdark

[proracer]

Try using this but I'm not really sure because I never used it.

https://wiki.multitheftauto.com/wiki/GetVehicleSirensOn

[dragonofdark]

Returns true if the sirens are turned on for the specified vehicle, false if the sirens are turned off for the specified vehicle, if the vehicle doesn't have sirens or if invalid arguments are specified.

So I don't think that it works

[DiSaMe]

It's easily scriptable.

Scripting with runcode:

Done with some other vehicles:

[dragonofdark]

Thanks Doomed_Space_Marine for this great tutorial

But my question was to put a siren on it, not lights

[Castillo]

I suposed you wanted that too

you can add a 3D sound around the vehicle.

https://wiki.multitheftauto.com/wiki/PlaySound3D

[DiSaMe]

But my question was to put a siren on it, not lights

Damn, I must have read it too quickly, because I don't remember myself getting drunk

[dragonofdark]

Ahah don't worry Doomed_Space_Marine... Your link is useful for me too

Thanks Solidsnake14, so if I'm right, I need to :

- Create a car ;

- Make a playSound3D ;

- Attach playSound3D to the car ;

- Create a command to play the sound.

Okay ?

[Castillo]

I guess so

[madis]

Ahah don't worry Doomed_Space_Marine... Your link is useful for me too

Thanks Solidsnake14, so if I'm right, I need to :

- Create a car ;

- Make a playSound3D ;

- Attach playSound3D to the car ;

- Create a command to play the sound.

Okay ?

Unfortunately you can't simply use attach method to attach it (you could add a feature request for that in MTA).

You need to add handler method for a render event, and update the sound3d element's position on each call of that handler method. You can get the required position from the vehicle.

Update: As SDK noted, it is possible to use attachElements method. I guess I was a bit behind of time with having the deprecated attachElementToElement in mind.

Edited January 24, 2011 by Guest

[dragonofdark]

Wow, Now it's more difficult

I'll request that for the next version.

[SDK]

https://wiki.multitheftauto.com/wiki/AttachElements

Sure it can be attached like you wrote, no render events are needed. (I've done it before)

[dragonofdark]

Hmmm... If you've done it without render events so I'll follow what your said.

[dragonofdark]

Well, I started to script that. But the vehicle isn't there and I can't hear any sound.

Here is my meta.xml :

<meta> 
    <info author="dragonofdark" version="1.0" name="4X4 avec sirène et gyros" type="misc" /> 
     
    <script src="sirene.lua" type="client" /> 
     
    <file src="sons/sirene1.wav" /> 
</meta> 

My sirene.lua :

function onClientResourceStart() 
    local commandant = createVehicle ( 554, 1227.746, -1422.281, 13.5432, [0, 0, 0, COMM1] ) 
    local x,y,z = getElementPosition( commandant ) 
    local sound = playSound3D("sons/sirene1.wav", 0, 0, 0, true) 
    attachElements ( sound, commandant, 0, 0, 0 ) 
  
end 
addEventHandler("onClientResourceStart", getResourceRootElement(getThisResource()), onResourceStart) 

In the script folder I have :

- Directory "sons" with my sirene1.wav

- meta.xml

- sirene.lua

It's just a test to see if it can create and attach the siren to it but it doesn't work

[SDK]

Your code is theoretically pretty good, but you made a lot of errors. And unfortunately, using directories can be quite tricky. I corrected your meta and script and commented the errors.

Meta:

• - The tag src's filename needs to have backslashes ( \ ) instead of slashes ( / )

<meta> 
    <info author="dragonofdark" version="1.0" name="4X4 avec sirène et gyros" type="misc" /> 
    <script src="sirene.lua" type="client" /> 
    <file src="sons\sirene1.wav" /> 
</meta> 

createVehicle:

• - "[" and "]" are not needed for optional arguments and forbidden actually
  - The num plate needs to be a string

playSound3D:

• - This is the trickiest, you need two backslashes here since Lua interpretes \ in a special way (

check here)
- play the sound on x, y, z

attachElements:

• - The 0,0,0 are not needed cause they're by default 0,0,0

addEventHandler:

• - You attached the event to the wrong function (onResourceStart)

function onClientResourceStart() 
    local commandant = createVehicle ( 554, 1227.746, -1422.281, 13.5432, 0, 0, 0, "COMM1" ) 
    local x,y,z = getElementPosition( commandant ) 
    local sound = playSound3D("sons\\sirene1.wav", x, y, z, true) 
    attachElements ( sound, commandant ) 
  
end 
addEventHandler("onClientResourceStart", getResourceRootElement(getThisResource()), onClientResourceStart) 

[dragonofdark]

The errors are due of it's my first script

Hm... Your corrections work well but how can I set up for the siren is listened in more longer distances?

And... I can't enter in the vehicle O_o

[SDK]

You can use these for sound distances (you can click on them):

setSoundVolume 
setSoundMinDistance 
setSoundMaxDistance 

And for not being able to enter, I don't know why, maybe cause it's created client side?

[dragonofdark]

The problem is that the playSound3D is just client-side...

We should ask for this function in further versions.

[SDK]

That's not a problem or bug, (it's a feature )

Simply create the vehicle serverside and use triggerClientEvent to notify all clients a sound must be attached to that vehicle. Quick script:

Server:

  
function testSirene( player, cmd ) 
        local commandant = createVehicle ( 554, 1227.746, -1422.281, 13.5432, 0, 0, 0, "COMM1" ) 
        triggerClientEvent ( "startSirene", player, commandant ) 
end 
addCommandHandler ( "testsirene", testSirene) 

Client:

function startSirene ( vehicle ) 
        local x,y,z = getElementPosition( vehicle ) 
        local sound = playSound3D( "sons\\sirene1.wav", x, y, z, true) 
        attachElements ( sound, vehicle) 
end 
addEvent( "startSirene", true ) 
addEventHandler("startSirene", getResourceRootElement(), startSirene) 

[dragonofdark]

The command "startSirene" doesn't work.

(Ahah, you're also Belgian )

[Castillo]

the command is "testsirene" not "startsirene" o_o

[dragonofdark]

Oh damn... But "testsirene" only spawn the vehicle and not the siren...

[Castillo]

it's giving any error in debugscript? /debugscript 3 in game

[dragonofdark]

Nothing.

[Castillo]

change the triggerClientEvent with this one:

triggerClientEvent (player, "startSirene", getRootElement(), commandant )