Image angle with offsets [SOLVED]

[Ax209]

Hi Guys. I'm sure this question has come up before but the programming is way beyond my capabilities and I can't search for it (I have tried) but I literally have no idea what to search for. Because I don't know the terms.

I have a gunship and I'd love to create instances at the end of the cannons. However the cannons move at an angle and that kinda puts a kink in what I wanna do. In order to prevent a poor explanation, I drew a picture.

I can make the bullets generate at a fixed angle but not when the guns turn. Well at least not through each cannon, they just appear out of the middle.

Any help much appreciated.

 

[Alexx]

You'd need to use:

lengthdir_x(len, dir);

and

lengthdir_y(len, dir);

Which can be confusing initially.

Try yourself first, but if you need an example, share your sprites and I'll knock one up.

 

[NightFrost]

Commonly, lengthdir_x and lengthdir_y are used to find the x/y position of a spot whose angle and distance is known to you. Just add the rotation to the angle. Remember that zero degrees rotation in GM means facing towards right.

 

[Ax209]

Guys you've been amazing. Took a while to have a look at examples and to apply the function to my own context but it worked wonderfully in the end. A great learning experience! Thanks so much!

 

[Alexx]

Congrats on solving yourself, rather than requesting an example.