Hi,
Playing around with Corona and i’m asking myself: how to create an object (like a balloon) which can defie gravity and go ‘up’.
Have tried several thinks but the balloon always falls. Maybe i’m missing something.
Glad if someone can help me 
Thanks ! [import]uid: 96145 topic_id: 16179 reply_id: 316179[/import]
You need to constantly apply small upward linear impulses to the balloon:
[lua]local function defyGravity()
balloon:applyLinearImpulse( 0, -10, balloon.x, balloon.y )
end
Runtime:addEventListener( “enterFrame”, defyGravity)[/lua]
I haven’t tested this code but you sholud get the idea
You might need to tweak the amount of the impulse depending on the density of the balloon
hope this helps
Raúl Beltrán
MIU Games [import]uid: 44101 topic_id: 16179 reply_id: 60199[/import]
Excellent ! Thanks Raul just what I was looking for ! [import]uid: 96145 topic_id: 16179 reply_id: 60207[/import]
A better way would be to set linear velocity
[lua]local function defyGravity()
balloon:setLinearVelocity(0,-10)
end[/lua]
or even a transition would do
[lua]local function defyGravity()
transition.to(balloon,{time=2000,y = balloon.y-200})
end[/lua]
[import]uid: 64174 topic_id: 16179 reply_id: 60217[/import]
are you using physics ?
in that case you can just use a -ve value for gravity.
[lua]physics:setGravity(0,-5) [/lua] ofcourse only if there are no other object which should fall down. [import]uid: 71210 topic_id: 16179 reply_id: 60281[/import]