Graal Forums - getdir(float, float);

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- - getdir(float, float); (https://forums.graalonline.com/forums/showthread.php?t=134265564)

Gunderak

01-13-2012 07:34 AM

getdir(float, float);

I am making a Joystick and am having problems with getdir.
Basically I have this.

PHP Code:


		
			
player.dir = getdir(Joystick_Controller.x + 35 - Joystick_Pointer.x + 10, Joystick_Controller.y + 35 - Joystick_Pointer.y + 10);

Joystick_Controller is the joystick background/container.
Joystick_Pointer is a small dot at the cursor.
Is there something I am doing wrong?

DustyPorViva

01-13-2012 07:39 AM

Getdir works off of delta's, but you're not doing a very good job describing what's not actually working.

fowlplay4

01-13-2012 07:40 AM

You have it backwards by the looks of it, switch Controller with Pointer and the modifications you add/subtract.

Here's an example of you can get your direction based on the target (or mouse), and your point of reference (yourself).

I.e: player.dir = getdir(target.x - player.x, target.y - player.y);

Gunderak

01-13-2012 07:56 AM

It now works, but only for the directions 2 and 3....

Skyld

01-13-2012 11:40 AM

Not entirely sure if you need to consider this for the purposes of what you are doing, but you might need to deal with player.x + 1.5 and player.y + 2 to get references from the centre-point of the player, not the top-left corner.

Tolnaftate2004

01-13-2012 07:14 PM

Quote:

Originally Posted by Gunderak (Post 1681612)

It now works, but only for the directions 2 and 3....

Watch your +s and -s

PHP Code:


		
			
player.dir = getdir((Joystick_Pointer.x + 10) - (Joystick_Controller.x + 35), (Joystick_Pointer.y + 10) - (Joystick_Controller.y + 35));

is not the same as

PHP Code:


		
			
player.dir = getdir(Joystick_Pointer.x + 10 - Joystick_Controller.x + 35, Joystick_Pointer.y + 10 - Joystick_Controller.y + 35);

is not the same as what you have in the OP.

Gunderak

01-14-2012 12:22 PM

Oh bodmas..... Completly forgot about that.
Darn you high school, why didn't you make me pay attention!

Crow	01-14-2012 04:08 PM

Quote:

Originally Posted by Gunderak (Post 1681654)

Oh bodmas..... Completly forgot about that.
Darn you high school, why didn't you make me pay attention!

:oo:

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