Physics bodies doesn't collide

Games
1

Hello, I’m creating 3 physics bodies( A,B,C ), I want (A and B) not to collide with each others and in the same time they collide with the 3rd body ( C ).

How to achieve this using the physics.

Many Thanks. [import]uid: 43119 topic_id: 8810 reply_id: 308810[/import]

2

One way would be to add a type attribute to each item. So for instance:

  
local a = display.newImage("indeed.png")  
a.type = "friend"  
  
local b = dispaly.newImage("indeedyes.png")  
b.type = "friend"  
  
local c = display.newImage("indeedsir.png")  
c.type = "enemy"

Then in your collision function, add this if statement:

  
if (e.phase == "began") then  
 if (e.other.type == "enemy") then  
 -- Do something   
 end  
end

[import]uid: 9968 topic_id: 8810 reply_id: 32080[/import]

3

Thank you very much, I’ve been reading about ( Collision categories, masking, and groups) and i tried to implement this but didn’t success, Do you have any ideas about how to get it using this too?

http://developer.anscamobile.com/content/game-edition-collision-detection#Collision_categories_masking_and_groups

Thanks again. [import]uid: 43119 topic_id: 8810 reply_id: 32082[/import]