input.c

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007, 2008, 2009 Thomas Perl <thp@thpinfo.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  20  * MA  02110-1301, USA.
  21  *
  22  **/
  23
  24 #include <string.h>
  25
  26 #include "tennix.h"
  27 #include "input.h"
  28
  29 static InputDevice devices[MAX_INPUT_DEVICES];
  30 static int devices_count;
  31
  32 void init_input()
  33 {
  34     int n, x;
  35
  36     SDL_JoystickEventState(SDL_ENABLE);
  37
  38     /* keyboard presets */
  39     devices[devices_count].type = INPUT_TYPE_KEYBOARD;
  40     devices[devices_count].up_key = 'w';
  41     devices[devices_count].down_key = 's';
  42     devices[devices_count].input_keys[INPUT_KEY_HIT]= 'd';
  43     devices[devices_count].input_keys[INPUT_KEY_TOPSPIN] = 'e';
  44     devices[devices_count].input_keys[INPUT_KEY_SMASH] = 'f';
  45     strcpy(devices[devices_count].name, "Keyboard (WS/DEF)");
  46     devices_count++;
  47
  48     /* keyboard presets */
  49     devices[devices_count].type = INPUT_TYPE_KEYBOARD;
  50     devices[devices_count].up_key = 'o';
  51     devices[devices_count].down_key = 'l';
  52     devices[devices_count].input_keys[INPUT_KEY_HIT]= 'k';
  53     devices[devices_count].input_keys[INPUT_KEY_TOPSPIN] = 'i';
  54     devices[devices_count].input_keys[INPUT_KEY_SMASH] = 'j';
  55     strcpy(devices[devices_count].name, "Keyboard (OL/KIJ)");
  56     devices_count++;
  57
  58     /* keyboard presets */
  59     devices[devices_count].type = INPUT_TYPE_KEYBOARD;
  60     devices[devices_count].up_key = SDLK_UP;
  61     devices[devices_count].down_key = SDLK_DOWN;
  62     devices[devices_count].input_keys[INPUT_KEY_HIT]= SDLK_SPACE;
  63     devices[devices_count].input_keys[INPUT_KEY_TOPSPIN] = SDLK_LCTRL;
  64     devices[devices_count].input_keys[INPUT_KEY_SMASH] = SDLK_LALT;
  65     strcpy(devices[devices_count].name, "Keyboard (arrows + space, lctrl, lalt)");
  66     devices_count++;
  67
  68     /* joysticks */
  69     n = SDL_NumJoysticks();
  70     for (x=0; x<n && devices_count<MAX_INPUT_DEVICES; x++) {
  71         strcpy(devices[devices_count].name, SDL_JoystickName(x));
  72         devices[devices_count].type = INPUT_TYPE_JOYSTICK;
  73         devices[devices_count].joystick = SDL_JoystickOpen(x);
  74         devices[devices_count].x_axis = 0;
  75         devices[devices_count].y_axis = 0;
  76         devices[devices_count].input_keys[INPUT_KEY_HIT]= 0;
  77         devices[devices_count].input_keys[INPUT_KEY_TOPSPIN] = 1;
  78         devices[devices_count].input_keys[INPUT_KEY_SMASH] = 2;
  79         devices_count++;
  80     }
  81 }
  82
  83 void uninit_input()
  84 {
  85     int i;
  86     SDL_JoystickEventState(SDL_IGNORE);
  87
  88     for (i=0; i<devices_count; i++) {
  89         if (devices[i].type == INPUT_TYPE_JOYSTICK) {
  90             SDL_JoystickClose(devices[i].joystick);
  91         }
  92     }
  93     devices_count = 0;
  94 }
  95
  96
  97 InputDevice* find_input_devices(unsigned int* count)
  98 {
  99     *count = devices_count;
 100     return devices;
 101 }
 102
 103 const char* input_device_get_name(InputDevice* d)
 104 {
 105     return d->name;
 106 }
 107
 108 float input_device_get_axis(InputDevice* d, unsigned const char axis) {
 109     Uint8 *keystate;
 110     SDL_PumpEvents();
 111
 112     if (d->type == INPUT_TYPE_KEYBOARD) {
 113         keystate = SDL_GetKeyState(NULL);
 114         if (axis == INPUT_AXIS_X) {
 115             return 1.0*keystate[d->right_key] + -1.0*keystate[d->left_key];
 116         } else {
 117             return 1.0*keystate[d->down_key] + -1.0*keystate[d->up_key];
 118         }
 119     } else if (d->type == INPUT_TYPE_JOYSTICK) {
 120         if (axis == INPUT_AXIS_X) {
 121             return JOYSTICK_PERCENTIZE(SDL_JoystickGetAxis(d->joystick, d->x_axis*2));
 122         } else {
 123             return JOYSTICK_PERCENTIZE(SDL_JoystickGetAxis(d->joystick, 1+d->y_axis*2));
 124         }
 125     } else {
 126         /* unimplemented */
 127     }
 128     return 0.0;
 129 }
 130
 131 char input_device_get_key(InputDevice* d, unsigned const char key) {
 132     SDL_PumpEvents();
 133
 134     if (d->type == INPUT_TYPE_KEYBOARD) {
 135         return SDL_GetKeyState(NULL)[d->input_keys[key]];
 136     } else if (d->type == INPUT_TYPE_JOYSTICK) {
 137         return SDL_JoystickGetButton(d->joystick, d->input_keys[key]);
 138     } else {
 139         /* unimplemented */
 140     }
 141     return 0;
 142 }
 143
 144