28 lines
725 B
C++
28 lines
725 B
C++
#include "frontends/libretro/analog.h"
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#include "frontends/libretro/environment.h"
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#include "libretro.h"
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#define AXIS_MIN -32768
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#define AXIS_MAX 32767
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namespace ra2
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{
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Analog::Analog(unsigned device)
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: JoypadBase(device)
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, myAxisCodes(2)
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{
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myAxisCodes[0] = std::make_pair(RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X);
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myAxisCodes[1] = std::make_pair(RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y);
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}
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double Analog::getAxis(int i) const
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{
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const auto & code = myAxisCodes[i];
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const int value = input_state_cb(0, myDevice, code.first, code.second);
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const double axis = 2.0 * double(value - AXIS_MIN) / double(AXIS_MAX - AXIS_MIN) - 1.0;
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return axis;
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}
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}
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