Noob Coding Question

[thehumanidiot]

how do i code analog stick movements??

[yaustar]

http://www.psp-programming.com/forum...p?topic=2321.0

[thehumanidiot]

thank you very much

[thehumanidiot]

how do i detect the movements???

[yaustar]

You already have an example and code in the topic I linked. What do you mean by movement?

[dangee]

2 perpendicular strips attach to the base of the stick with geared movement for precision.

Each strip connects to a potentiometer,whose resistance varies according to the position of the strip.

Changing voltage/current caused by varying resistance is digitised and stored in an 8 bit data register.

X,Y registers for the 2 strips are read from f/ware, and returned to a prog.

'movement' (velocity) is programmed, using the time between 2 reads,and the distance between the
positions that were read

[thehumanidiot]

yes yaustar, i typed that in my code but how do i use it??

[dangee]

Analog velocity's uncommon in games, except on the Wii.
Tiger Woods PGA tour 2004 (PS2) uses it for the golfers' clubswing.
It's an ambitious piece of coding to attempt.

More often, the Analog stick's used like a Dpad:

The range of (X,Y) positions are divided into sectors.
Each sector corresponds to a direction button.
When the Analog position read is inside a sector,it's treated as
a push of the corresponding button.
Central sector = no button push

e.g. (-127,0) = Apad LEFT ,(120,118) = Apad RIGHT+UP

[thehumanidiot]

ok, but i want to know how to use it, for example, to use dpad buttons you would type
if(pad.Buttons & PSP_CTRL_UP){
}

so what do i do for that analog stick??

[dangee]

Size and shape of the Apad centre(-off) sector has a
significant effect on performance and sensitivity.

A precise method uses a circle centred at (0,0) with a variable radius (R).
The value (R × R) is calculated (RSQ).
An Apad position (X,Y) is inside the centre-off sector if ((X × X) + (Y × Y)) is less than RSQ.

ex:

if (analogX^2+analogY^2)<rsquared {/* no analog i/p */}

RSQ effects sensitivity.
(RSQ = 32768) : disables the Apad
(RSQ = 1) : maximum sensitivity
(RSQ = 3698) : default