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| >SDL_JoystickGetAxis</H1 |
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| CLASS="REFNAMEDIV" |
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| NAME="AEN6320" |
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| ><H2 |
| >Name</H2 |
| >SDL_JoystickGetAxis -- Get the current state of an axis</DIV |
| ><DIV |
| CLASS="REFSYNOPSISDIV" |
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| NAME="AEN6323" |
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| >Synopsis</H2 |
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| NAME="AEN6324" |
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| ><P |
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| ><PRE |
| CLASS="FUNCSYNOPSISINFO" |
| >#include "SDL.h"</PRE |
| ><P |
| ><CODE |
| ><CODE |
| CLASS="FUNCDEF" |
| >Sint16 <B |
| CLASS="FSFUNC" |
| >SDL_JoystickGetAxis</B |
| ></CODE |
| >(SDL_Joystick *joystick, int axis);</CODE |
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| ><H2 |
| >Description</H2 |
| ><P |
| ><TT |
| CLASS="FUNCTION" |
| >SDL_JoystickGetAxis</TT |
| > returns the current state of the given <TT |
| CLASS="PARAMETER" |
| ><I |
| >axis</I |
| ></TT |
| > on the given <TT |
| CLASS="PARAMETER" |
| ><I |
| >joystick</I |
| ></TT |
| >.</P |
| ><P |
| >On most modern joysticks the X axis is usually represented by <TT |
| CLASS="PARAMETER" |
| ><I |
| >axis</I |
| ></TT |
| > 0 and the Y axis by <TT |
| CLASS="PARAMETER" |
| ><I |
| >axis</I |
| ></TT |
| > 1. The value returned by <TT |
| CLASS="FUNCTION" |
| >SDL_JoystickGetAxis</TT |
| > is a signed integer (-32768 to 32768) representing the current position of the <TT |
| CLASS="PARAMETER" |
| ><I |
| >axis</I |
| ></TT |
| >, it maybe necessary to impose certain tolerances on these values to account for jitter. It is worth noting that some joysticks use axes 2 and 3 for extra buttons.</P |
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| NAME="AEN6341" |
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| ><H2 |
| >Return Value</H2 |
| ><P |
| >Returns a 16-bit signed integer representing the current position of the <TT |
| CLASS="PARAMETER" |
| ><I |
| >axis</I |
| ></TT |
| >.</P |
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| >Examples</H2 |
| ><P |
| ><PRE |
| CLASS="PROGRAMLISTING" |
| >Sint16 x_move, y_move; |
| SDL_Joystick *joy1; |
| . |
| . |
| x_move=SDL_JoystickGetAxis(joy1, 0); |
| y_move=SDL_JoystickGetAxis(joy1, 1);</PRE |
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| ><H2 |
| >See Also</H2 |
| ><P |
| ><A |
| HREF="sdljoysticknumaxes.html" |
| ><TT |
| CLASS="FUNCTION" |
| >SDL_JoystickNumAxes</TT |
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