bounce in response to touch? (tap left bounce to right)

Games
#1

i have a ball. i have it so when you tap it it bounces. its ALL good. nice spinning and nice damping :slight_smile:

HOWEVER i can’t make it bounce horizontally… only up and down.
i’ve seen the balloon video on youtube 6 times already but its not working for me.

basically i just want the ball to bounce in the opposite direction of where i’m touching it.

i’m sure theres a way of doing this :stuck_out_tongue:

and BTW i don’t mean just up down left right. i want it to bounce like it would in the real world. up down ;eft right upper left, lower right, almost in the lower right, etc etc etc. basically real physics. the video seems to have done it not sure why i can’t replicate it…

here is my code…

local function onTap(event)
if “began” == event.phase then
beachball:applyLinearImpulse( 0 , -0.2, event.x, event.y )
elseif “ended” == event.phase then
end
end
beachball:addEventListener(“touch”, onTap)

i have it “onTap” because i don’t want infinite bounces, only on TAP (began)
can some one help me out? thanks! [import]uid: 91147 topic_id: 15482 reply_id: 315482[/import]

#2

try different value for x and y in
beachball:applyLinearImpulse( x , y, event.x, event.y )

[import]uid: 71210 topic_id: 15482 reply_id: 57210[/import]

#3

i did but it responds to what i write there. i want the ball to bounce to the opposite on my “Tap”. like in real life :confused:

u tap a ball on the bottom it bounces up. tap it on the right it goes left…

[import]uid: 91147 topic_id: 15482 reply_id: 57334[/import]

#4

try this
[lua]function onTouch(event)
if event.phase == “began” then
–We modify the y-coordinate of the event, so it is more under the ball
event.y = event.y+20
–Now apply some physic force to the ball reagrding the relative position
–of the touch coordinates and the ball coordinates.
beachball:applyForce( (beachball.x - event.x)*20, (beachball.y - event.y)*20, beachball.x, beachball.y )
end
end

beachball:addEventListener(“touch”,onTouch)[/lua] [import]uid: 71210 topic_id: 15482 reply_id: 57399[/import]

#5

oh man thank you Sooooooo much!!! this made my day. it worked! i just had to edit the force. it was TOO much lol ball was going everywhere!

a THOUSAND thank yous!

you know, i’m starting to understand lua more and more :slight_smile: thanks again!

EDIT: hmm… it doesn’t rotate anymore. it just bounces but it doesn’t spins. before it would spin and slowly slow down (through angular damping)

EDIT 2: ok i fixed that with adding angularimpulse but it only spins to the right. (clockwise) no matter where i tap it. my first code would make the ball spin to its direction. [import]uid: 91147 topic_id: 15482 reply_id: 57526[/import]

#6

any ideas>? [import]uid: 91147 topic_id: 15482 reply_id: 57702[/import]