Scratch

scratchU8 · 2012-05-25 12:47:48

I'm helping a friend make a Marble game. You know, like that Marble Racer, only with a Super Monkey ball twist. Anyway, I was wondering how you could make collision to a color if the x and y velocity gets changed by 0.1 when arrow keys are pressed.

MoreGamesNow · 2012-05-25 16:39:53

If all your angles are 90 degrees:

when gf clicked
set [x-vel v] to (0)
set [y-vel v] to (0)
forever
if<key [up arrow v] pressed?>
change [y-vel v] by (0.1)
end
if<key [down arrow v] pressed?>
change [y-vel v] by (-0.1)
end
if<key [right arrow v] pressed?>
change [x-vel v] by (0.1)
end
if<key [left arrow v] pressed?>
change [x-vel v] by (-0.1)
end
change x by (x-vel)
if<touching [color]?>
set [x-vel v] to ((-1)*(x-vel))
change x by (x-vel)
end
change y by (y-vel)
if<touching [color]?>
set [y-vel v] to ((-1)*(y-vel))
change y by (y-vel)
end