Momentum quantizer

[Kilinich]

If you need kick something with exact impulse - here it is a script for thruster to convert it into hummer

Put this code in console, create thruster and set its force = {scene.my.impRelease}
Now just call scene.my.addImpulse(mv) in any time and it will hit geom with exact short-time force.

Works with any sim.frequecy and any sim scale!

Code: Select all

Scene.my.impArmed := false;
Scene.my.impValue := 0; Scene.my.impForce := 0;
Scene.my.impTime := 0; Scene.my.impTick := 0;
Scene.my.addImpulse := (mv)=>{
    scene.my.impValue = scene.my.impValue + mv;
    scene.my.impArmed ? {} : {
        scene.my.impArmed = true;
        scene.my.impTick = sim.tick; scene.my.impTime = sim.time
    }
};
Scene.my.impRelease := {
    scene.my.impArmed ? {
        scene.my.impTick < sim.tick ? {
            scene.my.impValue = scene.my.impValue - scene.my.impForce * (sim.time - scene.my.impTime);
            scene.my.impTime = sim.time;  scene.my.impTick = sim.tick;
            scene.my.impForce = 0.5 * scene.my.impValue * sim.frequency;
            scene.my.impForce * scene.my.impForce < 1e-007 ? {
                scene.my.impArmed = false;
                scene.my.impValue = 0; scene.my.impForce = 0
            } : scene.my.impForce
        } : scene.my.impForce
    } : 0
};


Momentum (impulse) quantizer demo

Kilinich

Rating:
Filesize: 29.97 kB
Comments: 2
Ratings: 4

[Gear97]

Incridible ! This will will be useful for so many things !
But what is the idea to get the right at force at the right period of time ? I've been trying to do something like this but I was not able to get right time and force.

[Kilinich]

But what is the idea to get the right at force at the right period of time ?

Well, since you can't predict how much time force will be applied (mostly it's 1 or 2 ticks) I've decide to apply half of necessary impulse and then iteratively come to target value (making "half step" every sim.tick). That works perfectly on normal sim scale and acceptable on any other condition.

[Gear97]

Nice solution, thank you for the explanation

[Someone Else]

Interesting.

Shoot tool, anyone? Assuming that thrusters can be Thymed to change their angle to point at the mouse?
Preferably by the actual angle of the thruster, but seeing as I've had to run 1.8.5 for a while, I don't remember if that property is accessible to Thyme...

EDIT: I downloaded it. Very interesting scene. This may be very useful indeed...
Now, all it needs is a phunlet...