OOSDLJoystickManager.m

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/*
 
OOSDLJoystickManager.m
By Dylan Smith
 
Oolite
Copyright (C) 2004-2013 Giles C Williams and contributors
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
 
This program 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 General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
 
*/
 
#import "OOSDLJoystickManager.h"
#import "OOLogging.h"
 
#define kOOLogUnconvertedNSLog @"unclassified.OOSDLJoystickManager"
 
 
@implementation OOSDLJoystickManager
 
- (id) init
{
    int i;
 
    // Find and open the sticks. Make sure that we don't fail if more joysticks than MAX_STICKS are detected.
    stickCount = SDL_NumJoysticks();
    OOLog(@"joystick.init", @"Number of joysticks detected: %ld", (long)stickCount);
    if (stickCount > MAX_STICKS)
    {
        stickCount = MAX_STICKS;
        OOLog(@"joystick.init", @"Number of joysticks detected exceeds maximum number of joysticks allowed. Setting number of active joysticks to %d.", MAX_STICKS);
    }
    if(stickCount)
    {
        for(i = 0; i < stickCount; i++)
        {
            // it's doubtful MAX_STICKS will ever get exceeded, but
            // we need to be defensive.
            if(i > MAX_STICKS)
                break;
 
            stick[i]=SDL_JoystickOpen(i);
            if(!stick[i])
            {
                OOLog(@"joystick.init", @"Failed to open joystick #%d", i);
            }
        }
        SDL_JoystickEventState(SDL_ENABLE);
    }
    return [super init];
}
 
 
- (BOOL) handleSDLEvent: (SDL_Event *)evt
{
    BOOL rc=NO;
    switch(evt->type)
    {
        case SDL_JOYAXISMOTION:
            [self decodeAxisEvent: (JoyAxisEvent *)evt];
            rc=YES;
            break;
        case SDL_JOYBUTTONDOWN:
        case SDL_JOYBUTTONUP:
            [self decodeButtonEvent: (JoyButtonEvent *)evt];
            rc=YES;
            break;
        case SDL_JOYHATMOTION:
            [self decodeHatEvent: (JoyHatEvent *)evt];
            rc=YES;
            break;
        default:
            OOLog(@"handleSDLEvent.unknownEvent", @"%@", @"JoystickHandler was sent an event it doesn't know");
    }
    return rc;
}
 
 
// Overrides
 
- (NSUInteger) joystickCount
{
    return stickCount;
}
 
 
- (NSString *) nameOfJoystick:(NSUInteger)stickNumber
{
    return [NSString stringWithUTF8String:SDL_JoystickName((int)stickNumber)];
}
 
 
- (int16_t) getAxisWithStick:(NSUInteger) stickNum axis:(NSUInteger) axisNum 
{
    return SDL_JoystickGetAxis(stick[stickNum], axisNum);
}
 
 
 
@end