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-rw-r--r--src/input_common/sdl/sdl.cpp57
1 files changed, 53 insertions, 4 deletions
diff --git a/src/input_common/sdl/sdl.cpp b/src/input_common/sdl/sdl.cpp
index ae0206909..756ee58b7 100644
--- a/src/input_common/sdl/sdl.cpp
+++ b/src/input_common/sdl/sdl.cpp
@@ -8,6 +8,7 @@
#include <tuple>
#include <unordered_map>
#include <SDL.h>
+#include "common/logging/log.h"
#include "common/math_util.h"
#include "input_common/sdl/sdl.h"
@@ -40,12 +41,16 @@ public:
return SDL_JoystickGetButton(joystick.get(), button) == 1;
}
- std::tuple<float, float> GetAnalog(int axis_x, int axis_y) const {
+ float GetAxis(int axis) const {
if (!joystick)
return {};
SDL_JoystickUpdate();
- float x = SDL_JoystickGetAxis(joystick.get(), axis_x) / 32767.0f;
- float y = SDL_JoystickGetAxis(joystick.get(), axis_y) / 32767.0f;
+ return SDL_JoystickGetAxis(joystick.get(), axis) / 32767.0f;
+ }
+
+ std::tuple<float, float> GetAnalog(int axis_x, int axis_y) const {
+ float x = GetAxis(axis_x);
+ float y = GetAxis(axis_y);
y = -y; // 3DS uses an y-axis inverse from SDL
// Make sure the coordinates are in the unit circle,
@@ -97,6 +102,27 @@ private:
Uint8 direction;
};
+class SDLAxisButton final : public Input::ButtonDevice {
+public:
+ explicit SDLAxisButton(std::shared_ptr<SDLJoystick> joystick_, int axis_, float threshold_,
+ bool trigger_if_greater_)
+ : joystick(joystick_), axis(axis_), threshold(threshold_),
+ trigger_if_greater(trigger_if_greater_) {}
+
+ bool GetStatus() const override {
+ float axis_value = joystick->GetAxis(axis);
+ if (trigger_if_greater)
+ return axis_value > threshold;
+ return axis_value < threshold;
+ }
+
+private:
+ std::shared_ptr<SDLJoystick> joystick;
+ int axis;
+ float threshold;
+ bool trigger_if_greater;
+};
+
class SDLAnalog final : public Input::AnalogDevice {
public:
SDLAnalog(std::shared_ptr<SDLJoystick> joystick_, int axis_x_, int axis_y_)
@@ -130,8 +156,14 @@ public:
* - "joystick": the index of the joystick to bind
* - "button"(optional): the index of the button to bind
* - "hat"(optional): the index of the hat to bind as direction buttons
+ * - "axis"(optional): the index of the axis to bind
* - "direction"(only used for hat): the direction name of the hat to bind. Can be "up",
- * "down", "left" or "right"
+ * "down", "left" or "right"
+ * - "threshould"(only used for axis): a float value in (-1.0, 1.0) which the button is
+ * triggered if the axis value crosses
+ * - "direction"(only used for axis): "+" means the button is triggered when the axis value
+ * is greater than the threshold; "-" means the button is triggered when the axis value
+ * is smaller than the threshold
*/
std::unique_ptr<Input::ButtonDevice> Create(const Common::ParamPackage& params) override {
const int joystick_index = params.Get("joystick", 0);
@@ -155,6 +187,23 @@ public:
direction);
}
+ if (params.Has("axis")) {
+ const int axis = params.Get("axis", 0);
+ const float threshold = params.Get("threshold", 0.5f);
+ const std::string direction_name = params.Get("direction", "");
+ bool trigger_if_greater;
+ if (direction_name == "+") {
+ trigger_if_greater = true;
+ } else if (direction_name == "-") {
+ trigger_if_greater = false;
+ } else {
+ trigger_if_greater = true;
+ LOG_ERROR(Input, "Unknown direction %s", direction_name.c_str());
+ }
+ return std::make_unique<SDLAxisButton>(GetJoystick(joystick_index), axis, threshold,
+ trigger_if_greater);
+ }
+
const int button = params.Get("button", 0);
return std::make_unique<SDLButton>(GetJoystick(joystick_index), button);
}