UFOs and goals

# 1 01-10-2006 , 09:30 PM

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in this scene i have a UFO i want to shoot down with the particle sysem which is basically at default except i think it is emmitting around 300 rather than the default 100. I have a PP colour ramp, colour is accumulative (doesn't matter at all if it is or not for this) and i have a ramp on PP opacity (again doesn't matter) you can see the speed and so forth .

my goal (pun) is to hit the UFO, it is keyed across 300 frames in X from left to right (-X to X.., whatever)

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# 2 01-10-2006 , 09:32 PM

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how am i going to do it?? well with a 'goal.' (because that's my goal) you find it, well you can see in the picture

select the particles and select the object and then the options for 'goal.'

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# 3 01-10-2006 , 09:34 PM

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the default setting for a goal are with 'transform' is off so if you want to hit a piece of geometry, a camera, or whatever, anything with a transform you must check this box

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# 4 01-10-2006 , 09:36 PM

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once i have clicked on this 'goal' and press play i get this, it is over shooting and oscillating until it finds a mean weight.

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# 5 01-10-2006 , 09:45 PM

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on the particle menu there is a 'goal' drop down and there you can mess around with the sliders and stuff but how i got this result is with the 'conserve' in the 'general controls attributes' for the particle shape, it is down from one to .5, and it seems quiet happy there. you can have more than one goal, if you do you will need to look at 'gaol wiegtht.; eg, one goal could be keyed at .1 and the other at .9 and then you could swap those around with keying halfway on the time line (hope that made sense.)

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UFOs and goals

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