Kollisionen schon frühzeitig erkennen

[Gandalfus]

Delphi-Quellcode:

function TF_main.RectinRect(rect1,rect2: Trect): boolean;
begin
  result := true;
  if (rect1.Left > rect2.BottomRight.x) then result:=false;
  if (rect1.top > rect2.BottomRight.y) then result:=false;
  if (rect2.Left > rect1.BottomRight.x) then result:=false;
  if (rect2.top > rect1.BottomRight.y) then result:=false;
end;

oder IntersectRect();