...
if <touching [edge v] ?> then
turn cw (180) degrees
end

if <touching [edge v] ?> then
turn cw (180) degrees
change x by (-10 or 10)
end

Goodthingsaregood66 wrote:

Aw come on! all that work…..FOR NOTHING???? << ignore that, overreacting and idk why <snip>

CatsUnited wrote:

A pretty simple one, yes:

...
if <touching [edge v] ?> then
turn cw (180) degrees
end

username wrote:

When i go to sleep, I'll check tomorrow if you found a workaround or not.

 direction away from (left v) edge :: motion reporter 

Goodthingsaregood66 wrote:

If there was this block:

 direction away from (left v) edge :: motion reporter 

in Scratch, THEN there will be an actual workaround.

Wyan100 wrote:

Actually the solution that CatsUnited provided does not work

…

because this just makes your item (let's pretend it's a ball for explanation purposes) turn around everytime it hits a wall.

A real ball acts nothing like this. If a ball hits a wall, it doesn't just turn around and come back to you. Instead, it bounces around the room at different angles depending how you threw it.

If you were making a pong game using this script everytime that you hit the wall, instead of it ricocheting off the wall towards the opponent, it would just turn around a come back to your own paddle.

…

...
if <touching [edge v] ?> then
if <([abs v] of (x position)) > [230]> then
point in direction ((direction) * (-1))

end
if <([abs v] of (y position)) > [170]> then
point in direction ((180) - (direction))

end
end

CatsUnited wrote:

Wyan100 wrote:

Actually the solution that CatsUnited provided does not work

…

because this just makes your item (let's pretend it's a ball for explanation purposes) turn around everytime it hits a wall.

A real ball acts nothing like this. If a ball hits a wall, it doesn't just turn around and come back to you. Instead, it bounces around the room at different angles depending how you threw it.

If you were making a pong game using this script everytime that you hit the wall, instead of it ricocheting off the wall towards the opponent, it would just turn around a come back to your own paddle.

…

I've done some testing and this seems to work more realistically for bouncing:

...
if <touching [edge v] ?> then
if <([abs v] of (x position)) > [230]> then
point in direction ((direction) * (-1))

end
if <([abs v] of (y position)) > [170]> then
point in direction ((180) - (direction))

end
end

-Infinite-Code- wrote:

I read a cute tutorial which said that for realisticness, the object should bounce at the same angle relative to the bounce plane as it came towards it. E.g. if you throw it from straight up it bounces straight back up off of flat ground, if you thwor the ball from the side it keeps much of it's momentum and bounces athe same angle relative to the ground that it came in at. Therefore the simplest way to implement this is to have the object move into the ground, turn move and repeat until it is out of the ground, then, go back to it's origi nal position and continue moving. This only works in a custom block without screen refresh though.

CatsUnited wrote:

Wyan100 wrote:

Actually the solution that CatsUnited provided does not work

…

because this just makes your item (let's pretend it's a ball for explanation purposes) turn around everytime it hits a wall.

A real ball acts nothing like this. If a ball hits a wall, it doesn't just turn around and come back to you. Instead, it bounces around the room at different angles depending how you threw it.

If you were making a pong game using this script everytime that you hit the wall, instead of it ricocheting off the wall towards the opponent, it would just turn around a come back to your own paddle.

…

I've done some testing and this seems to work more realistically for bouncing:

...
if <touching [edge v] ?> then
if <([abs v] of (x position)) > [230]> then
point in direction ((direction) * (-1))

end
if <([abs v] of (y position)) > [170]> then
point in direction ((180) - (direction))

end
end

Wyan100 wrote:

-Infinite-Code- wrote:

I read a cute tutorial which said that for realisticness, the object should bounce at the same angle relative to the bounce plane as it came towards it. E.g. if you throw it from straight up it bounces straight back up off of flat ground, if you thwor the ball from the side it keeps much of it's momentum and bounces athe same angle relative to the ground that it came in at. Therefore the simplest way to implement this is to have the object move into the ground, turn move and repeat until it is out of the ground, then, go back to it's origi nal position and continue moving. This only works in a custom block without screen refresh though.

I am trying to do something similar to what you said, but I can't figure out how to determine if the ball is on a Horizontal or Vertical Edge

turn cw (<touching [edge v] ?> * (180)) degrees

god286 wrote:

Okay…

turn cw (<touching [edge v] ?> * (180)) degrees

I guess you could say this is smart?
Not so sure if it's good, though