爪哇。 碰撞检测

Question

I write a simple collision detection using rectangles. I've to check overlapping in render method. Could you tell me what's faster the first way:

render()
    {
        Rectangle playerRectangle = new Rectangle(
                        playerTransformComponent.x,
                        playerTransformComponent.y,
                        playerDimensionsComponent.width,
                        playerDimensionsComponent.height);
                for(Rectangle block : blocksList){
                  //check collision
                 }
    }

Or the second way:

Rectangle playerRectangle = new Rectangle();
render()
{
    playerRectangle.x = playerTransformComponent.x;
    playerRectangle.y = playerTransformComponent.y;
    playerRectangle.width = playerDimensionsComponent.width;
    playerRectangle.height = playerDimensionsComponent.height;
    for(Rectangle block : blocksList){
              //check collision
             }
}

Answer 1

The render() function is a loop, so the first way is obviously wrong - you create an object every frame - it's a loss of everything.
The second way is definitely faster.
I hope it helps!
staticcasty