physical interaction between two images

Getting Started Newbie Questions
#1

I am designing a football game,since the ball should bounce back when it collides with the boundary of the field i tried to implement the same using a boundary image and a ball image and gave both the physical properties but they are not interacting the ball goes to a direction without colliding with the boundary

here is my code 

local physics = require(“physics”)

physics.start()

local boundary = display.newImage(“boundary.png”,display.contentWidth/2,display.contentHeight/2)

physics.addBody(boundary,“static”,{friction = 0,bounce=1})

local ball = display.newImage(“ball.png”,display.contentWidth/2,display.contentHeight/2)

physics.addBody(ball,“dynamic”,{friction = 0 ,bounce = 1 })

i tried to implement the same but by creating walls and the interaction was perfect 

_W = display.contentWidth

_H = display.contentHeight

local physics = require(“physics”)

physics.start(  )

physics.setGravity( 0, 0 )

local circle = display.newCircle(display.contentWidth/2,display.contentHeight/2,30)

physics.addBody(circle,“dynamic”,{friction = 0 , bounce = 1})

circle.linearDamping  = 7

local wallthickness = 10

local leftwall = display.newRect( 5, 0, wallthickness,960 )

physics.addBody(leftwall,“static”,{friction = 0, bounce = 1})

– top wall

local topwall = display.newRect( 0, 0, 640, wallthickness )

physics.addBody(topwall,“static”,{friction = 0 , bounce = 1})

– right wall

local rightwall = display.newRect(_W-wallthickness,0,wallthickness,960)

physics.addBody(rightwall,“static”,{friction = 0,bounce = 1})

–bottom wall

local bottomwall =display.newRect(0,_H+wallthickness-30,660, wallthickness )

physics.addBody(bottomwall,“static”,{friction=0,bounce = 1})

–left

local player1 = display.newCircle( 20 , _H/2 , 30 )

physics.addBody(player1,“dynamic”,{density = 1,friction = 0 , bounce = 1})

player1:setFillColor(0,0,1)

player1:setLinearVelocity(60,0)

   

#2

Hey,

the problem is, that you create only one solid physic body and the ball is inside that body.

You would either need the boundaries to consist out of 4 offset rectangular physic bodys for the 4 walls, or you could use a chain body (which is simpler but has some cons).

All you need can be found in the Corona Docs for physics.addBody.

https://docs.coronalabs.com/api/library/physics/addBody.html

As a hint, search for “Offset/Angled Rectangular Body”, “Edge Shape (Chain) Body” and “Multi-Element Body” on that page.

#3

Hey,

the problem is, that you create only one solid physic body and the ball is inside that body.

You would either need the boundaries to consist out of 4 offset rectangular physic bodys for the 4 walls, or you could use a chain body (which is simpler but has some cons).

All you need can be found in the Corona Docs for physics.addBody.

https://docs.coronalabs.com/api/library/physics/addBody.html

As a hint, search for “Offset/Angled Rectangular Body”, “Edge Shape (Chain) Body” and “Multi-Element Body” on that page.