Rotation of image pointing towards mouse?

[BarnD]

I am currently having a blank moment, I'm trying to get an image, lets say the image is a cube and its in the middle of the screen, how would i go about making one face of the cube angle towards the cursor and rotate the cube to where the cursor is.

No need to write out a whole script, just say a good way of going about doing it, thanks.

[TechnoCat]

I reckon like this: http://love2d.org/forums/viewtopic.php? ... 850#p29655

[BarnD]

Woo, thanks.

Code: Select all

playerR = math.atan2(mouseY-playerY, mouseX-playerX)

That's basically what i have done to get it working for now..

[BlackBulletIV]

I usually wrap that into a function like this:

Code: Select all

function math.angle(x1, y1, x2, y2)
  return math.atan2(y2 - y1, x2 - x1)
end

It makes things easier to remember.

[BarnD]

I usually wrap that into a functions,
It makes things easier to remember.

Yeah, also makes the code much cleaner.

[BlackBulletIV]

Indeed.

[Robin]

I would suggest not putting it in the math library, as that library is standard but that function is not. People reading your code would expect math.* to be one of the standard library functions.

[Jasoco]

I just name my function getAngle(). Or distanceFrom() for distance.

[BlackBulletIV]

I would suggest not putting it in the math library, as that library is standard but that function is not. People reading your code would expect math.* to be one of the standard library functions.

Each to their own I guess, but I find it nicer looking to put it in with the math library. It wouldn't take long for someone to figure out it's not part of the math library anyway.

[BarnD]

People reading your code would expect math.* to be one of the standard library functions.

Unless you want them to be confused