diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/joystick/dc/SDL_sysjoystick.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/joystick/dc/SDL_sysjoystick.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/joystick/dc/SDL_sysjoystick.c b/distrib/sdl-1.2.15/src/joystick/dc/SDL_sysjoystick.c new file mode 100644 index 0000000..dc089e7 --- /dev/null +++ b/distrib/sdl-1.2.15/src/joystick/dc/SDL_sysjoystick.c @@ -0,0 +1,193 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 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_DC + +#include "SDL_events.h" +#include "SDL_joystick.h" +#include "../SDL_sysjoystick.h" +#include "../SDL_joystick_c.h" + +#include <dc/maple.h> +#include <dc/maple/controller.h> + +#define MAX_JOYSTICKS 8 /* only 2 are supported in the multimedia API */ +#define MAX_AXES 6 /* each joystick can have up to 6 axes */ +#define MAX_BUTTONS 8 /* and 8 buttons */ +#define MAX_HATS 2 + +#define JOYNAMELEN 8 + +/* array to hold joystick ID values */ +static uint8 SYS_Joystick_addr[MAX_JOYSTICKS]; + +/* The private structure used to keep track of a joystick */ +struct joystick_hwdata +{ + cont_cond_t prev_cond; + int prev_buttons; +}; + +/* Function to scan the system for joysticks. + * This function should set SDL_numjoysticks to the number of available + * joysticks. Joystick 0 should be the system default joystick. + * It should return 0, or -1 on an unrecoverable fatal error. + */ +int SDL_SYS_JoystickInit(void) +{ + int numdevs; + + int p,u; + + numdevs = 0; + for(p=0;p<MAPLE_PORT_COUNT;p++) { + for(u=0;u<MAPLE_UNIT_COUNT;u++) { + if (maple_device_func(p,u)&MAPLE_FUNC_CONTROLLER) { + SYS_Joystick_addr[numdevs] = maple_addr(p,u); + numdevs++; + } + } + } + + return(numdevs); +} + +/* Function to get the device-dependent name of a joystick */ +const char *SDL_SYS_JoystickName(int index) +{ + maple_device_t *dev; + if (maple_compat_resolve(SYS_Joystick_addr[index],&dev,MAPLE_FUNC_CONTROLLER)!=0) return NULL; + return dev->info.product_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) +{ + /* 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)); + + /* fill nbuttons, naxes, and nhats fields */ + joystick->nbuttons = MAX_BUTTONS; + joystick->naxes = MAX_AXES; + joystick->nhats = MAX_HATS; + 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) +{ +const int sdl_buttons[] = { + CONT_C, + CONT_B, + CONT_A, + CONT_START, + CONT_Z, + CONT_Y, + CONT_X, + CONT_D +}; + + uint8 addr; + cont_cond_t cond,*prev_cond; + int buttons,prev_buttons,i,changed; + + addr = SYS_Joystick_addr[joystick->index]; + if (cont_get_cond(addr,&cond)<0) return; + + buttons = cond.buttons; + prev_buttons = joystick->hwdata->prev_buttons; + changed = buttons^prev_buttons; + + if ((changed)&(CONT_DPAD_UP|CONT_DPAD_DOWN|CONT_DPAD_LEFT|CONT_DPAD_RIGHT)) { + int hat = SDL_HAT_CENTERED; + if (buttons&CONT_DPAD_UP) hat|=SDL_HAT_UP; + if (buttons&CONT_DPAD_DOWN) hat|=SDL_HAT_DOWN; + if (buttons&CONT_DPAD_LEFT) hat|=SDL_HAT_LEFT; + if (buttons&CONT_DPAD_RIGHT) hat|=SDL_HAT_RIGHT; + SDL_PrivateJoystickHat(joystick, 0, hat); + } + if ((changed)&(CONT_DPAD2_UP|CONT_DPAD2_DOWN|CONT_DPAD2_LEFT|CONT_DPAD2_RIGHT)) { + int hat = SDL_HAT_CENTERED; + if (buttons&CONT_DPAD2_UP) hat|=SDL_HAT_UP; + if (buttons&CONT_DPAD2_DOWN) hat|=SDL_HAT_DOWN; + if (buttons&CONT_DPAD2_LEFT) hat|=SDL_HAT_LEFT; + if (buttons&CONT_DPAD2_RIGHT) hat|=SDL_HAT_RIGHT; + SDL_PrivateJoystickHat(joystick, 1, hat); + } + + for(i=0;i<sizeof(sdl_buttons)/sizeof(sdl_buttons[0]);i++) { + if (changed & sdl_buttons[i]) { + SDL_PrivateJoystickButton(joystick, i, (buttons & sdl_buttons[i])?SDL_PRESSED:SDL_RELEASED); + } + } + + prev_cond = &joystick->hwdata->prev_cond; + if (cond.joyx!=prev_cond->joyx) + SDL_PrivateJoystickAxis(joystick, 0, cond.joyx-128); + if (cond.joyy!=prev_cond->joyy) + SDL_PrivateJoystickAxis(joystick, 1, cond.joyy-128); + if (cond.rtrig!=prev_cond->rtrig) + SDL_PrivateJoystickAxis(joystick, 2, cond.rtrig); + if (cond.ltrig!=prev_cond->ltrig) + SDL_PrivateJoystickAxis(joystick, 3, cond.ltrig); + if (cond.joy2x!=prev_cond->joy2x) + SDL_PrivateJoystickAxis(joystick, 4, cond.joy2x-128); + if (cond.joy2y!=prev_cond->joy2y) + SDL_PrivateJoystickAxis(joystick, 5, cond.joy2y-128); + + joystick->hwdata->prev_buttons = buttons; + joystick->hwdata->prev_cond = cond; +} + +/* Function to close a joystick after use */ +void SDL_SYS_JoystickClose(SDL_Joystick *joystick) +{ + if (joystick->hwdata != NULL) { + /* free system specific hardware data */ + SDL_free(joystick->hwdata); + } +} + +/* Function to perform any system-specific joystick related cleanup */ +void SDL_SYS_JoystickQuit(void) +{ + return; +} + +#endif /* SDL_JOYSTICK_DC */ |