mirror of
https://github.com/libretro/RetroArch.git
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83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2017 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../include/gamepad.h"
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enum gamepad_pad_axes
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{
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AXIS_LEFT_ANALOG_X = 0,
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AXIS_LEFT_ANALOG_Y,
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AXIS_RIGHT_ANALOG_X,
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AXIS_RIGHT_ANALOG_Y,
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AXIS_TOUCH_X,
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AXIS_TOUCH_Y,
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AXIS_INVALID
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};
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void gamepad_read_axis_data(uint32_t axis, axis_data *data)
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{
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if (!data)
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return;
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data->axis = AXIS_POS_GET(axis);
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data->is_negative = false;
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if (data->axis >= AXIS_INVALID)
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{
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data->axis = AXIS_NEG_GET(axis);
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data->is_negative = true;
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}
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}
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int16_t gamepad_get_axis_value(int16_t state[3][2], axis_data *data)
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{
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return gamepad_get_axis_value_raw(state, data, true);
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}
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int16_t gamepad_get_axis_value_raw(int16_t state[3][2], axis_data *data, bool do_clamp)
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{
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int16_t value = 0;
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if (!data)
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return 0;
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switch (data->axis)
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{
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case AXIS_LEFT_ANALOG_X:
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value = state[RETRO_DEVICE_INDEX_ANALOG_LEFT][1];
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break;
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case AXIS_LEFT_ANALOG_Y:
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value = state[RETRO_DEVICE_INDEX_ANALOG_LEFT][0];
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break;
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case AXIS_RIGHT_ANALOG_X:
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value = state[RETRO_DEVICE_INDEX_ANALOG_RIGHT][1];
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break;
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case AXIS_RIGHT_ANALOG_Y:
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value = state[RETRO_DEVICE_INDEX_ANALOG_RIGHT][0];
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break;
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}
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if (do_clamp)
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{
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if (data->is_negative && value > 0)
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return 0;
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if (!data->is_negative && value < 0)
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return 0;
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}
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return value;
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}
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