Paddle Passing Through Wall?

I recently finished making my first app by following a YouTube tutorial, but one thing bothered me. I want my paddle in my game to collide with the walls and stop moving, instead of passing through it like it currently does.

How could I do this?

main.lau

require("physics")
 
function main()
        setUpPhysics()
        createWalls()
        createBricks()
        createBall()
        createPaddle()
        startGame()
end
 
function setUpPhysics()
        physics.start()
        physics.setGravity(0,0)
end
 
function createWalls()
        local wallThickness = 15
        -- Left Wall
        local wall = display.newRect(0 , 0, wallThickness, display.contentHeight)
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        -- Right Wall
        wall = display.newRect(display.contentWidth - wallThickness , 0, wallThickness, display.contentHeight)
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        -- Top Wall
        wall = display.newRect(0 , 0, display.contentWidth, wallThickness) 
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        -- Bottom Wall
        wall = display.newRect(0 , display.contentHeight - wallThickness, display.contentWidth, wallThickness)
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        wall.type = "Bottom"
end
 
function createBricks()
        local brickWidth = 60
        local brickHeight = 30
        local numRows = 4
        local numColumns = 6
        local topLeft = {x = display.contentWidth / 2 - (brickWidth * numColumns) / 2, y = display.contentWidth / 8}
        local row
        local column
        
        for row = 0, numRows - 1 do
                for column = 0, numColumns - 1 do
                        local brick = display.newRect(topLeft.x + (column * brickWidth), topLeft.y + (row * brickHeight), brickWidth, brickHeight)
                        brick:setFillColor(math.random(50, 255), math.random(50, 255), math.random(50, 255))
                        brick.type = "Destructible"
                        physics.addBody(brick, "static", {friction = 0, bounce = 1})
                end
        end
end
 
function createBall()
        local ballRadius = 15
        ball = display.newCircle(display.contentWidth / 2, display.contentHeight / 2, ballRadius)
        ball:setFillColor(255, 255, 255)
        physics.addBody(ball, "dynamic", {friction = 0, bounce = 1, radius = ballRadius})
        ball.collision = function(self, event)
                if(event.phase == "ended") then
                        if(event.other.type == "Destructible") then
                                event.other:removeSelf()
                        end
                        if(event.other.type == "Bottom") then
                                self:removeSelf()
                                local onTimerComplete = function(event)
                                        createBall()
                                        startGame()
                                end
                                timer.performWithDelay(0, onTimerComplete)
                        end
                end
        end
        ball:addEventListener("collision", ball)
end
 
function createPaddle()
        local paddleWidth = 200
        local paddleHeight = 15
        local paddle = display.newRect(display.contentWidth / 2 - paddleWidth / 2, display.contentHeight - display.contentHeight / 9.6, paddleWidth, paddleHeight)
        physics.addBody(paddle, "static", {friction = 0, bounce = 1})
        local movePaddle = function(event)
                paddle.x = event.x
        end
        Runtime:addEventListener("touch", movePaddle)
end
 
function startGame()
        ball:setLinearVelocity(math.random(-150, 150), display.contentWidth / 1.25)
end
 
display.setStatusBar(display.HiddenStatusBar)
main()

You place the paddle in a non physics way by fixed position - maybe this overrides the collision. Try to use a physically way: move the paddle something like the puck in the multi puck example or better try to follow the instruction for touch joints:

http://developer.anscamobile.com/content/game-edition-physics-joints#Touch_joint

To avoid strange behavior you can "cut" the touch joint if the user touches out of your boundaries

What else do you guys suggest? Is it possible to add a type and have the paddle not go through that type?

I tried to do what is said above, but I didn't have any luck :/

Very basic and cobbled together, but try something like this;

require("physics")
 
function main()
        setUpPhysics()
        createWalls()
        createBricks()
        createBall()
        createPaddle()
        startGame()
end
 
function setUpPhysics()
        physics.start()
        physics.setGravity(0,0)
end
 
function createWalls()
        local wallThickness = 15
        -- Left Wall
        local wall = display.newRect(0 , 0, wallThickness, display.contentHeight)
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        -- Right Wall
        wall = display.newRect(display.contentWidth - wallThickness , 0, wallThickness, display.contentHeight)
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        -- Top Wall
        wall = display.newRect(0 , 0, display.contentWidth, wallThickness) 
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        -- Bottom Wall
        wall = display.newRect(0 , display.contentHeight - wallThickness, display.contentWidth, wallThickness)
        physics.addBody(wall, "static", {friction = 0, bounce = 1})
        wall:setFillColor(255, 255, 255)
        wall.type = "Bottom"
end
 
function createBricks()
        local brickWidth = 60
        local brickHeight = 30
        local numRows = 4
        local numColumns = 6
        local topLeft = {x = display.contentWidth / 2 - (brickWidth * numColumns) / 2, y = display.contentWidth / 8}
        local row
        local column
        
        for row = 0, numRows - 1 do
                for column = 0, numColumns - 1 do
                        local brick = display.newRect(topLeft.x + (column * brickWidth), topLeft.y + (row * brickHeight), brickWidth, brickHeight)
                        brick:setFillColor(math.random(50, 255), math.random(50, 255), math.random(50, 255))
                        brick.type = "Destructible"
                        physics.addBody(brick, "static", {friction = 0, bounce = 1})
                end
        end
end
 
function createBall()
        local ballRadius = 15
        ball = display.newCircle(display.contentWidth / 2, display.contentHeight / 2, ballRadius)
        ball:setFillColor(255, 255, 255)
        physics.addBody(ball, "dynamic", {friction = 0, bounce = 1, radius = ballRadius})
        ball.collision = function(self, event)
                if(event.phase == "ended") then
                        if(event.other.type == "Destructible") then
                                event.other:removeSelf()
                        end
                        if(event.other.type == "Bottom") then
                                self:removeSelf()
                                local onTimerComplete = function(event)
                                        createBall()
                                        startGame()
                                end
                                timer.performWithDelay(0, onTimerComplete)
                        end
                end
        end
        ball:addEventListener("collision", ball)
end
 
function createPaddle()
        local paddleWidth = 200
        local paddleHeight = 15
        local paddle = display.newRect(display.contentWidth / 2 - paddleWidth / 2, display.contentHeight - display.contentHeight / 9.6, paddleWidth, paddleHeight)
        physics.addBody(paddle, "static", {friction = 0, bounce = 1})
        local movePaddle = function(event)
                paddle.x = event.x
                                if paddle.x > 240 then paddle.x = 240
                                elseif paddle.x < 100 then paddle.x = 100
                                end
        end
        Runtime:addEventListener("touch", movePaddle)
end
 
function startGame()
        ball:setLinearVelocity(math.random(-150, 150), display.contentWidth / 1.25)
end
 
display.setStatusBar(display.HiddenStatusBar)
main()

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