Glitches with the automatic machine gun

[HedgeHog builder]

So this is the problem:
I am a white square following the mouse.
The machinegun the AI is firing however is not pointing in the correct direction.
It's origin is not even near the green AI
...
What I would wish:
The machine gun actually aims towards the player.
What might be wrong:
Check my MissileFire function first, I think there is something wrong with the mathematics there.

[sphyrth]

So let's just get this one in:

asdfasdfasdf.png (10.26 KiB) Viewed 3091 times

The white square is you.
The green square in the middle is an AI (enemy?)
And that other green thing is the machine gun.

Now, how should your game work again?

[sphyrth]

Okay, I think I got a good handle of what's going on. Let's start with your starting coordinates:

Code: Select all

function EnemyMissile(x1,x2,y1,y2)
	local StartX = x1/2
	local StartY = y1/2
	...

On this part, it seems that you want the Missiles start coming out from the CENTER of the enemy. But you first have to define the enemy's width and height before you can do that. And, also you're referencing the player rather than the enemy.

So to simplify things, I did this:

Code: Select all

function EnemyMissile(x1,x2,y1,y2)
	local StartX = x2
	local StartY = y2
	...

It's a step, but we got the enemy shooting missiles. Now we have to solve for the correct direction.

[sphyrth]

I got it. This is your original code

Code: Select all

function EnemyMissile(x1,x2,y1,y2)
   ...
   local angle = math.atan2((x1 - x2), (y1 - y2))

Just switch the x's an y's in the math.atan2():

Code: Select all

function EnemyMissile(x1,x2,y1,y2)
   ...
   local angle = math.atan2((y1 - y2), (x1 - x2))

[HedgeHog builder]

Thanks sphyrth!