Creating a physics body for each tile on the map? (major slowdown issues)

@betterwithlasers wrote:

Hi everyone,
I'm currently trying to combine the inbuilt Physics Engine and TileMap classes to create the levels for my physics-based sidescroller. These functionalities work fine seperately and there is no slowdown. However there is major slowdown (down to 15fps for a long time) when I try to combine these two steps, after creating the tilemap I try to place a physics body for each 'filled-in' tile.

for    (int x=0; x < 80; x++)       //width of map
    {
        for (int y = 0; y < 24; y++)   //height of map
        {
            auto spriteTile = wallLayer->getTileAt(Vec2(x,y));
            if (spriteTile != NULL)    
            {
                PhysicsBody* tilePhysics = PhysicsBody::createBox(Size(30.0f, 30.0f), PhysicsMaterial(1.0f, 1.0f, 0.0f));                 
                tilePhysics->setDynamic(false);   //static is good enough for walls
                spriteTile->setPhysicsBody(tilePhysics);
            }
        }
    }

As you can see I am basically bruteforcing it, the map is size 80*24 tiles and each tile is 30*30 pixels big. My main question is is there a better way to assign physics bodies to tiles? Or am I creating some kind of memory leak with the physics bodies? Note: wallLayer is the layer the tiles are on, and most of it is blank, so I don't think tile count is the problem.

Any insight would be helpful, thanks

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