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# Help with a game

Member Posts: 5
Hey,
I was hoping to make a pool game and i need some help with a couple of things.
-what method would allow me to use a certain point of a shape(circle)
-where could i obtain an equation as to which direction the balls would go when hit.

thanks alot

p.s if you think that this is a hard or impossible program to creat please tell me ^_^

• Member Posts: 5
: Hey,
: I was hoping to make a pool game and i need some help with a couple of things.
: -what method would allow me to use a certain point of a shape(circle)
: -where could i obtain an equation as to which direction the balls would go when hit.
:
: thanks alot
:
: p.s if you think that this is a hard or impossible program to creat please tell me ^_^
: -could you also help me with the pool cue, circling around the ball. The cue is a Line.

• Member Posts: 675
: Hey,
: I was hoping to make a pool game and i need some help with a couple of things.
: -what method would allow me to use a certain point of a shape(circle)
: -where could i obtain an equation as to which direction the balls would go when hit.
:
: thanks alot
:
: p.s if you think that this is a hard or impossible program to creat please tell me ^_^
:

It is very possible to make a game like that.

To find the resulting angles after the collision of 2 balls, involves a little physics. When the balls collide, there is 1 point on both balls that meat. The ball that was stationary before the collision will move in the opposite direction as that colliding point.

There is a rule called conservation of momentum, which basically means, the momentum of the moving ball before the collision is the same as the total momentum after the collision.

For example, if 1 ball is moving at 1 m/s, the other is stationary before the collision.

If after the collision the other ball is moving 0.5 m/s in the same direction, both balls must go 0.5 m/s to conserve the momentum from before the collision.