Change position on Collision began

przelewelo · April 23, 2016, 4:42pm

Hello
Is is possible to change physic element during colision ??
I have code like this:

local function onLocalCollision( self, event ) &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; if ( event.phase == "began" ) then &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(event.other.name == "ball") then &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; print ("GOOOOOOOL") &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; teamLocal[1].player.x = 200 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; teamLocal[1].player.y = 200 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; p1ScoreText.text = "1"; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end &nbsp; &nbsp; &nbsp; &nbsp; --print( self.name .. ": collision began with " .. tostring(event.other.name) ) &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; elseif ( event.phase == "ended" ) then &nbsp; &nbsp; &nbsp; &nbsp; print( self.name .. ": collision ended with " .. tostring(event.other.name) ) &nbsp; &nbsp; end end

p1ScoreText.text = “1”; - is working

teamLocal[1].player.x = 200 - it is not working

teamLocal[1].player.y = 200 - it is not working

this is physics for player:

physics.addBody(value.player, "dynamic", { density=1, friction=0.8, bounce=0.2, radius=25 }) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value.player.isFixedRotation=true &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value.player.linearDamping = 4 &nbsp;&nbsp;

and this is my player

 &nbsp; paddle = display.newImageRect(resourceFile, 80, 80) &nbsp; &nbsp; paddle.x = xcoordinate &nbsp; &nbsp; paddle.y = ycoordinate &nbsp; &nbsp; paddle.name = name

Greeting Thank You

przelewelo · April 23, 2016, 6:41pm

Ok, I got it
I need to do it with timer.

timer.performWithDelay(100, listener)

where in listener is replacement od pawns.

But my ball is still in movement after reseting positions : D

and physics stop doesnt work…

bubblebobble · April 27, 2016, 11:07am

Hi, when you move the object it is still owned by the physics engine so when it is re-positioned it still has the previous actions working on it.

I would set the objects LinearVelocity to 0 after moving it : i.e. setLinearVelocity(0,0)

https://docs.coronalabs.com/api/type/Body/setLinearVelocity.html

Maybe also set its body to False .i.e object.isBodyActive = false then re-enable it after the movement, otherwise it may collide/ interact with other bodies causing weird results.

Cheers

przelewelo · April 27, 2016, 11:10am

I will try, thank you for help

torbenratzlaff · April 27, 2016, 6:50pm

You may also want to reset the angularVelocity with body:setAngularVelocity(0).

przelewelo · April 23, 2016, 6:41pm