2072cdd857
--HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401642
320 lines
8.4 KiB
C
320 lines
8.4 KiB
C
/*
|
|
SDL - Simple DirectMedia Layer
|
|
Copyright (C) 1997-2006 Sam Lantinga
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
Sam Lantinga
|
|
slouken@libsdl.org
|
|
*/
|
|
#include "SDL_config.h"
|
|
|
|
#ifdef SDL_JOYSTICK_MACOS
|
|
|
|
/* SDL stuff -- "SDL_sysjoystick.c"
|
|
MacOS joystick functions by Frederick Reitberger
|
|
|
|
The code that follows is meant for SDL. Use at your own risk.
|
|
*/
|
|
|
|
#include <InputSprocket.h>
|
|
|
|
#include "SDL_joystick.h"
|
|
#include "../SDL_sysjoystick.h"
|
|
#include "../SDL_joystick_c.h"
|
|
|
|
|
|
/* The max number of joysticks we will detect */
|
|
#define MAX_JOYSTICKS 16
|
|
/* Limit ourselves to 32 elements per device */
|
|
#define kMaxReferences 32
|
|
|
|
#define ISpSymmetricAxisToFloat(axis) ((((float) axis) - kISpAxisMiddle) / (kISpAxisMaximum-kISpAxisMiddle))
|
|
#define ISpAsymmetricAxisToFloat(axis) (((float) axis) / (kISpAxisMaximum))
|
|
|
|
|
|
static ISpDeviceReference SYS_Joysticks[MAX_JOYSTICKS];
|
|
static ISpElementListReference SYS_Elements[MAX_JOYSTICKS];
|
|
static ISpDeviceDefinition SYS_DevDef[MAX_JOYSTICKS];
|
|
|
|
struct joystick_hwdata
|
|
{
|
|
char name[64];
|
|
/* Uint8 id;*/
|
|
ISpElementReference refs[kMaxReferences];
|
|
/* gonna need some sort of mapping info */
|
|
};
|
|
|
|
|
|
/* Function to scan the system for joysticks.
|
|
* Joystick 0 should be the system default joystick.
|
|
* This function should return the number of available joysticks, or -1
|
|
* on an unrecoverable fatal error.
|
|
*/
|
|
int SDL_SYS_JoystickInit(void)
|
|
{
|
|
static ISpDeviceClass classes[4] = {
|
|
kISpDeviceClass_Joystick,
|
|
#if kISpDeviceClass_Gamepad
|
|
kISpDeviceClass_Gamepad,
|
|
#endif
|
|
kISpDeviceClass_Wheel,
|
|
0
|
|
};
|
|
OSErr err;
|
|
int i;
|
|
UInt32 count, numJoysticks;
|
|
|
|
if ( (Ptr)0 == (Ptr)ISpStartup ) {
|
|
SDL_SetError("InputSprocket not installed");
|
|
return -1; // InputSprocket not installed
|
|
}
|
|
|
|
if( (Ptr)0 == (Ptr)ISpGetVersion ) {
|
|
SDL_SetError("InputSprocket not version 1.1 or newer");
|
|
return -1; // old version of ISp (not at least 1.1)
|
|
}
|
|
|
|
ISpStartup();
|
|
|
|
/* Get all the joysticks */
|
|
numJoysticks = 0;
|
|
for ( i=0; classes[i]; ++i ) {
|
|
count = 0;
|
|
err = ISpDevices_ExtractByClass(
|
|
classes[i],
|
|
MAX_JOYSTICKS-numJoysticks,
|
|
&count,
|
|
&SYS_Joysticks[numJoysticks]);
|
|
numJoysticks += count;
|
|
}
|
|
|
|
for(i = 0; i < numJoysticks; i++)
|
|
{
|
|
ISpDevice_GetDefinition(
|
|
SYS_Joysticks[i], sizeof(ISpDeviceDefinition),
|
|
&SYS_DevDef[i]);
|
|
|
|
err = ISpElementList_New(
|
|
0, NULL,
|
|
&SYS_Elements[i], 0);
|
|
|
|
if (err) {
|
|
SDL_OutOfMemory();
|
|
return -1;
|
|
}
|
|
|
|
ISpDevice_GetElementList(
|
|
SYS_Joysticks[i],
|
|
&SYS_Elements[i]);
|
|
}
|
|
|
|
ISpDevices_Deactivate(numJoysticks, SYS_Joysticks);
|
|
|
|
return numJoysticks;
|
|
}
|
|
|
|
/* Function to get the device-dependent name of a joystick */
|
|
const char *SDL_SYS_JoystickName(int index)
|
|
{
|
|
static char name[64];
|
|
int len;
|
|
|
|
/* convert pascal string to c-string */
|
|
len = SYS_DevDef[index].deviceName[0];
|
|
if ( len >= sizeof(name) ) {
|
|
len = (sizeof(name) - 1);
|
|
}
|
|
SDL_memcpy(name, &SYS_DevDef[index].deviceName[1], len);
|
|
name[len] = '\0';
|
|
|
|
return name;
|
|
}
|
|
|
|
/* Function to open a joystick for use.
|
|
The joystick to open is specified by the index field of the joystick.
|
|
This should fill the nbuttons and naxes fields of the joystick structure.
|
|
It returns 0, or -1 if there is an error.
|
|
*/
|
|
int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
|
|
{
|
|
int index;
|
|
UInt32 count, gotCount, count2;
|
|
long numAxis, numButtons, numHats, numBalls;
|
|
|
|
count = kMaxReferences;
|
|
count2 = 0;
|
|
numAxis = numButtons = numHats = numBalls = 0;
|
|
|
|
index = joystick->index;
|
|
|
|
/* allocate memory for system specific hardware data */
|
|
joystick->hwdata = (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata));
|
|
if (joystick->hwdata == NULL)
|
|
{
|
|
SDL_OutOfMemory();
|
|
return(-1);
|
|
}
|
|
SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata));
|
|
SDL_strlcpy(joystick->hwdata->name, SDL_SYS_JoystickName(index), SDL_arraysize(joystick->hwdata->name));
|
|
joystick->name = joystick->hwdata->name;
|
|
|
|
ISpElementList_ExtractByKind(
|
|
SYS_Elements[index],
|
|
kISpElementKind_Axis,
|
|
count,
|
|
&gotCount,
|
|
joystick->hwdata->refs);
|
|
|
|
numAxis = gotCount;
|
|
count -= gotCount;
|
|
count2 += gotCount;
|
|
|
|
ISpElementList_ExtractByKind(
|
|
SYS_Elements[index],
|
|
kISpElementKind_DPad,
|
|
count,
|
|
&gotCount,
|
|
&(joystick->hwdata->refs[count2]));
|
|
|
|
numHats = gotCount;
|
|
count -= gotCount;
|
|
count2 += gotCount;
|
|
|
|
ISpElementList_ExtractByKind(
|
|
SYS_Elements[index],
|
|
kISpElementKind_Button,
|
|
count,
|
|
&gotCount,
|
|
&(joystick->hwdata->refs[count2]));
|
|
|
|
numButtons = gotCount;
|
|
count -= gotCount;
|
|
count2 += gotCount;
|
|
|
|
joystick->naxes = numAxis;
|
|
joystick->nhats = numHats;
|
|
joystick->nballs = numBalls;
|
|
joystick->nbuttons = numButtons;
|
|
|
|
ISpDevices_Activate(
|
|
1,
|
|
&SYS_Joysticks[index]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Function to update the state of a joystick - called as a device poll.
|
|
* This function shouldn't update the joystick structure directly,
|
|
* but instead should call SDL_PrivateJoystick*() to deliver events
|
|
* and update joystick device state.
|
|
*/
|
|
void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
|
|
{
|
|
int i, j;
|
|
ISpAxisData a;
|
|
ISpDPadData b;
|
|
//ISpDeltaData c;
|
|
ISpButtonData d;
|
|
|
|
for(i = 0, j = 0; i < joystick->naxes; i++, j++)
|
|
{
|
|
Sint16 value;
|
|
|
|
ISpElement_GetSimpleState(
|
|
joystick->hwdata->refs[j],
|
|
&a);
|
|
value = (ISpSymmetricAxisToFloat(a)* 32767.0);
|
|
if ( value != joystick->axes[i] ) {
|
|
SDL_PrivateJoystickAxis(joystick, i, value);
|
|
}
|
|
}
|
|
|
|
for(i = 0; i < joystick->nhats; i++, j++)
|
|
{
|
|
Uint8 pos;
|
|
|
|
ISpElement_GetSimpleState(
|
|
joystick->hwdata->refs[j],
|
|
&b);
|
|
switch(b) {
|
|
case kISpPadIdle:
|
|
pos = SDL_HAT_CENTERED;
|
|
break;
|
|
case kISpPadLeft:
|
|
pos = SDL_HAT_LEFT;
|
|
break;
|
|
case kISpPadUpLeft:
|
|
pos = SDL_HAT_LEFTUP;
|
|
break;
|
|
case kISpPadUp:
|
|
pos = SDL_HAT_UP;
|
|
break;
|
|
case kISpPadUpRight:
|
|
pos = SDL_HAT_RIGHTUP;
|
|
break;
|
|
case kISpPadRight:
|
|
pos = SDL_HAT_RIGHT;
|
|
break;
|
|
case kISpPadDownRight:
|
|
pos = SDL_HAT_RIGHTDOWN;
|
|
break;
|
|
case kISpPadDown:
|
|
pos = SDL_HAT_DOWN;
|
|
break;
|
|
case kISpPadDownLeft:
|
|
pos = SDL_HAT_LEFTDOWN;
|
|
break;
|
|
}
|
|
if ( pos != joystick->hats[i] ) {
|
|
SDL_PrivateJoystickHat(joystick, i, pos);
|
|
}
|
|
}
|
|
|
|
for(i = 0; i < joystick->nballs; i++, j++)
|
|
{
|
|
/* ignore balls right now */
|
|
}
|
|
|
|
for(i = 0; i < joystick->nbuttons; i++, j++)
|
|
{
|
|
ISpElement_GetSimpleState(
|
|
joystick->hwdata->refs[j],
|
|
&d);
|
|
if ( d != joystick->buttons[i] ) {
|
|
SDL_PrivateJoystickButton(joystick, i, d);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Function to close a joystick after use */
|
|
void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
|
|
{
|
|
int index;
|
|
|
|
index = joystick->index;
|
|
|
|
ISpDevices_Deactivate(
|
|
1,
|
|
&SYS_Joysticks[index]);
|
|
}
|
|
|
|
/* Function to perform any system-specific joystick related cleanup */
|
|
void SDL_SYS_JoystickQuit(void)
|
|
{
|
|
ISpShutdown();
|
|
}
|
|
|
|
#endif /* SDL_JOYSTICK_MACOS */
|