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Make 2D Object Face Another

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This probably gets asked a lot, but I couldn't find the answer for a 2D situation. I have a 2D object and I want it to face another object. They can both fully rotate 360 degrees. I'm guessing this involves some trig and I'm not particularly good at that. Could someone explain how this is done?

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Quote:
Original post by Uphoreum
This probably gets asked a lot, but I couldn't find the answer for a 2D situation.

I have a 2D object and I want it to face another object. They can both fully rotate 360 degrees.

I'm guessing this involves some trig and I'm not particularly good at that. Could someone explain how this is done?
If you want the object's orientation to 'snap' to the target, you can just use 'atan2':
vector2 diff = target - position;
float angle = atan2(diff.y, diff.x);
If you want the object to turn toward the target gradually, it's a little more complicated (but not much). Anyway, post back if you need more details.

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Yep, that works! Well, I had to convert it to degrees first but after that it worked. Thanks so much!

I think I can take care of the gradual rotation part.

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