Angle between 2 points

[zsbzsb]

If all you want to do is move something between two points you don't even need to calculate the angle. Something as simple as the following works.

sf::Vector2f norm = pt1 - pt2;
myObject.setPosition(pt1);

while (window.isOpen())
{
   myObject.move(norm * deltaTime);
}

[electrux]

huh?! it was that easy?! lol and i was even bothering my math teacher for a way >_<.. anyways thanks very much SFML rocks!!!! best library i seen to start with game programming (btw m new to game programming so sorry i dont know almost everything...) thanks again

[electrux]

ok sorry but how did u define deltaTime? i tried Vector2f but it give me error that no function matches the operand *

[electrux]

nevermind... got it working by multiplying by float thanks and again, SFML FTW!!!!

[AlexAUT]

ok sorry but how did u define deltaTime?

deltaTime is the frametime, which you should multiply with nearly every movement to prevent that your movements will be faster when you have more frames per seconds. Here is a great article about this topic



AlexAUT

[Nexus]

If you don't want to reinvent the wheel, you could use Thor.Vectors that I have written. The module provides a lot of vector-related functionality, including the computation of angles in various situations.