Tutorial on bullets?

[BEANSFTW]

Can someone give me a tutorial on a basic bullet? I've seen many other tutorials about this, but they all seem too rushed.

[severedskullz]

Need more info on what you need. Are you launching bullets from turrets, guns, players, etc. Is Rotation a factor in your implementation? Are there dynamic offsets of the bullets location? Is the bullet "homing" in on its target?

[BEANSFTW]

The game is a top down view. You can click the mouse somewhere, and the player will fire the bullet in that direction.

[severedskullz]

I don't really have time to write a tutorial for you, but I hope these very helpful methods that I wrote in my own game will work for you.

Code: Select all

function dirVector(rot)
        --Returns the vector of the rotation in X and Y terms.
        -- Usually you use these as the update increments. Multiply them for faster traveling
	return math.cos(rot), math.sin(rot) 
end
function rotation(x1,y1, x2,y2)
        --Math.atan2 returns a radian between -Pi and Pi.
	return math.atan2(y2-y1, x2-x1) -- Return the rotation
end

Rotation will give you the rotation angle of 2 positions. X1 and Y1 are the starting positions and X2 and Y2 are the desired location. You can then pass in the rotation into dirVector which will return 2 variables: an X and Y position. You can use these in your update statements for your bullet entites. If it is too slow, and it most likely will be as these values range from 1, -1 then you may simply multiply the values returned by a constant to get faster speed.

[micha]

I don't have a tutorial either, but I see two challenges in implementing bullets:

• Creating a bullet that moves exactly in that direction that you want.
• Creating and managing multiple bullets

Which of the two is difficult to get for you? Or is the problem even somewhere else?

[buhb11]

Watch this vid : http://www.youtube.com/watch?v=S2oO2wbsXQs.If you got any questions ask me!

[jjmafiae]

tuts?

you need to read some lua and experiment some more and then you will find it out

hint:
use tables!