Hi, I am in the finishing stages of my first game, yeeah! I really love LUA and Corona but sometimes it’s easy to get stuck and now i am there again 
I am having platforms in my game that moves in two directions. Both horizontal and vertical. I managed to get the player on to those platforms when it moves and so far it is ok. I am also using physics for my game and I think that it did not get easier with that - but on the other side the gamefeeling is awesome!
Problem
When the player is traveling on a platform that moves vertical, he doesn’t jump of the platform? It works perfect on the platforms that moves horizontal? I am using levelHelper for creation of levels, you will see some code I am using to interact with objects in my code.
In my collision routine I have this code to see if the player is hitting a moving platform:
elseif event.other.lhTag == LevelHelper\_TAG.MOVING then
--=======================================================
-- MOVING PLATFORMS
--=======================================================
if (attachedPlatform==false) then
--Create an instance to the moving platform
ActivePlatform = loader:spriteWithUniqueName(event.other.lhUniqueName)
--Check that collision occurs on top of platform
if (ActivePlatform.y - ball.y\>12) then
--Offset of player and platform
PlatformOffset = ActivePlatform.x - ball.x
--Check that the player hits inside the platform and not on edges.
if(PlatformOffset\>-40 and PlatformOffset\<40) then
--Change tag on sprite to avoid any more collisions right now....
ActivePlatform.lhTag = LevelHelper\_TAG.DEFAULT
--Player can jump
ball.jumping = true
--player is attached to the platform
attachedPlatform = true
end
end
end
else
ball.jumping = true
end So then we have the player attached to the platform, and in my onEnterFrame I have this code:
if attachedPlatform then
--Ball is following the horizontal movement of the platform
--No control of Y since the fact that physics takes care of this for vertical moving platforms.
ball.x = ActivePlatform.x - PlatformOffset
ball.jumping = true
end and then I have this code in the jump function for my players character…
if(attachedPlatform) then
--We are just about to jump, so we are not attached any more....
attachedPlatform = false
--xGravity is a global value collected from joystick or gyroscope
ball:applyLinearImpulse((xGravity\*-1)/2, -12, ball.x, ball.y)
--Put back the tag on the platform to avoid doubbletap to get loose....
local listener = function()
ActivePlatform.lhTag = LevelHelper\_TAG.MOVING
end
timer.performWithDelay(100, listener )
else.... Any ideas of why I can’t jump of platforms that moves vertical?
Best regards, Joakim [import]uid: 81188 topic_id: 21373 reply_id: 321373[/import]