It depends on how complex you want to make it
I started by spawning a car and driving into it, but that's boring.
It gets more fun when you use save game feature. Press
CTRL+ALT+1 (you have
1,2,3,4,5 save slots) to save the current moment in time. You can use
ALT+1 to reload.
That way you can use
free camera (SHIFT+C) to get different angles, once you have your angle you can use
fixed camera (ALT+C) and that will allow you to control the active vehicle if you wish. Remember these modes toggle on-off.
It gets more complicated when you want to have, say, 2 moving vehicles crash at an intersection
Soft-reset mode allows you to re-position cars while keeping their momentum, for me it's the '@ key to toggle it. Then while holding
BACKSPACE you use
WASD and arrow keys to position/rotate, you can use
SHIFT/CTRL/ALT to speed up/slow down the movement
You can use the
END key on your keyboard to pause a single vehicle's physics, or
J key to pause all physics.
I pause all vehicles with
END, unpause any I want to move, pause everything with
J, unpause each vehicle with
END, save game and then press
J to watch what happens.
I know it's all very confusing through text, but just try and see for yourself, and I'm sure you'll figure things out.
1) how the save and reload feature works
2) the soft-reset mode where you hold down
BACKSPACE and position your vehicle
3) pausing physics for everything with
J or single vehicle with
END
Oh, and switching between vehicles with
CTRL+[ and
CTRL+]
Simulation speed: SHIFT+= and
CTRL+= \ | key - reset speed to 100%
I tried making a video for you but it's so unclear what is happening, it's pretty useless.
