how to prevent a ball from floating over the ground in corona sdk?

Audio and Graphics
#1

I have an image (ground) with transparent pixels on top of it
since the ground has hills like ups and downs … the problem is that
the ball isn’t moving down and up according to the hills … the ball is
just floating over the image. what can I do ??

local bg2 = display.newImage("images/ground.png",true) bg2:setReferencePoint(display.CenterLeftReferencePoint) bg2.x = 0; bg2.y = \_H/1.25; local physics = require("physics") physics.start() local redOrb = display.newCircle( 0, 0, 25) redOrb:setFillColor(255,0, 0) physics.setGravity(0,9.8) redOrb.x = 180; redOrb.y = 190; redOrb.rotation = 5 physics.addBody( bg2, "static", { friction=0.5, bounce=0.3 } ) physics.addBody( redOrb, { density=3.0, friction=0.5, bounce=0.3 } )  

 

#2

You need to define a custom physics shape that doesn’t include the transparency.   There is a 3rd party tool called “Physics Editor” that will  help make your life easier with things like this.

#3

You need to define a custom physics shape that doesn’t include the transparency.   There is a 3rd party tool called “Physics Editor” that will  help make your life easier with things like this.