Particles and triggers

#1 Datablock TriggerData(yourTrig) { tickPeriodMS = 1000; };


function yourTrig::onEnterTrigger(%this, %trigger, %obj)
{
Parent::onEnterTrigger(%this,%trigger,%obj);
makeEmitter();
}

function yourTrig::onLeaveTrigger(%this,%trigger, %obj)
{
Parent::onLeaveTrigger(%this,%trigger,%obj);
StopEmitter();
}

function makeEmitter(){
$anEmitter = new ParticleEmitterNode() { etc };
}


function stopEmitter() {
$anEmitter.delete();
}

#2 It might be a good idea to store the emitter ID in the trigger itself rather than a global. Use the method outlined by Sam but a little different:

Datablock TriggerData(yourTrig) { tickPeriodMS = 1000; };

function yourTrig::onEnterTrigger(%this, %trigger, %obj)
{
Parent::onEnterTrigger(%this,%trigger,%obj);
%this.makeEmitter(%trigger);
}

function yourTrig::onLeaveTrigger(%this,%trigger, %obj)
{
Parent::onLeaveTrigger(%this,%trigger,%obj);
%this.StopEmitter(%trigger);
}

function yourTrig::makeEmitter(%this,%obj){
%obj.emitter = new ParticleEmitterNode() { etc };
}


function yourTrig::stopEmitter(%this,%obj) {
%obj.emitter.delete();
}

#3 Thanks Paul.


How would you delay an event, say based on leaving the trigger?

This results in an unknown command error...

function yourTrig::onLeaveTrigger(%this,%trigger, %obj)
{
Parent::onLeaveTrigger(%this,%trigger,%obj);
schedule(1500, 0, %this.StopEmitter(%trigger));
}

#4 Sam,
try change this:
schedule(1500, 0, %this.StopEmitter(%trigger));

to this:
%this.schedule(5000, "StopEmitter", %trigger);

#5 Can you give me an example of what to put in the %obj.emitter = new ParticleEmitterNode() { etc }; to make a FireParticleEmitter start at that trigger when the player walks in to it

#6 New ParticleEmitterNode() {
position = "886.903 364.721 94.6248";
rotation = "1 0 0 0";
scale = "1 1 1";
dataBlock = "ChimneySmokeEmitterNode";
emitter = "ChimneySmokeEmitter";
velocity = "0.5";
};


Look in chimneyfire.cs in the example folder to see ChimneySmokeEmitterNode and ChimneySmokeEmitter.

#7 Sam

Thanks for the response. I added your code and nothing seemed to happen, I gave it the position of my trigger. Here is what I have..


function TokenTrigger::makeEmitter(%this,%obj)
{

echo( "A Blaze should have just happened");

%obj.emitter = New ParticleEmitterNode()
{
position = "68.6944 -168.837 5.7";
rotation = "1 0 0 0";
scale = "1 1 1";
dataBlock = "ChimneySmokeEmitterNode";
emitter = "ChimneySmokeEmitter";
velocity = "0.5";
echo( "Firing Blaze");
}
};

#8 Does this echo? echo( "A Blaze should have just happened");


Don't put an echo in the emitter node. ( "Firing Blaze");


You need a ; at the end of the node


%obj.emitter = New ParticleEmitterNode()
{
position = "68.6944 -168.837 5.7";
rotation = "1 0 0 0";
scale = "1 1 1";
dataBlock = "ChimneySmokeEmitterNode";
emitter = "ChimneySmokeEmitter";
velocity = "0.5";
};

#9 Sam

Even when I remove echo, it still is not firing nor hitting the echo to let me knoe it ran past that new particleEmitterNode

Here is my new code

function TokenTrigger::makeEmitter(%this,%obj)
{
echo( "Trying to make emitter");

%obj.emitter = new ParticleEmitterNode() {
position = "886.903 364.721 94.6248";
rotation = "1 0 0 0";
scale = "1 1 1";
dataBlock = "ChimneySmokeEmitterNode";
emitter = "ChimneySmokeEmitter";
velocity = "0.5";
}

echo( "Wraping up Emitter");
}

#10 You need a ; at the end of the node


%obj.emitter = New ParticleEmitterNode()
{
position = "68.6944 -168.837 5.7";
rotation = "1 0 0 0";
scale = "1 1 1";
dataBlock = "ChimneySmokeEmitterNode";
emitter = "ChimneySmokeEmitter";
velocity = "0.5";
};

#11 Sam

Sorry buddy

I had forgotten the ";" after that function

works like a charm
Thanks for your help!

#12 Glad it works now.

I bet that error showed up in the console output, towards the top, nicely highlighted in red ... or not. ;)

#13 It just kept saying "unknown command makeEmitter"

Funny how that works :)

#14 How to I put an emitter on the user, so instead of the weapon he's holding a light?

#15 --

#16 --