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Emulate motion controls with a mouse (#3122)

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* Rework framework to allow for more types of mouse-to-something emulation and hook up gyro to it

* Remove the unnecessary null check now that deltatime is handled differently

* Fix toggle key

* Basic gyro emulation working for two out of the three dimensions

* clang

* Added bindable key to hold for switching from looking to the sides to rolling

* documentation
This commit is contained in:
kalaposfos13
2025-06-20 12:55:41 +02:00
committed by GitHub
parent be12305f65
commit 551751df3c
7 changed files with 88 additions and 30 deletions
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55
src/input/input_mouse.cpp
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@@ -3,6 +3,7 @@
#include <cmath>
#include "common/assert.h"
#include "common/types.h"
#include "input/controller.h"
#include "input_mouse.h"
@@ -13,12 +14,19 @@ namespace Input {
int mouse_joystick_binding = 0;
float mouse_deadzone_offset = 0.5, mouse_speed = 1, mouse_speed_offset = 0.1250;
bool mouse_gyro_roll_mode = false;
Uint32 mouse_polling_id = 0;
bool mouse_enabled = false;
MouseMode mouse_mode = MouseMode::Off;
// We had to go through 3 files of indirection just to update a flag
void ToggleMouseEnabled() {
mouse_enabled = !mouse_enabled;
// Switches mouse to a set mode or turns mouse emulation off if it was already in that mode.
// Returns whether the mode is turned on.
bool ToggleMouseModeTo(MouseMode m) {
if (mouse_mode == m) {
mouse_mode = MouseMode::Off;
} else {
mouse_mode = m;
}
return mouse_mode == m;
}
void SetMouseToJoystick(int joystick) {
@@ -31,10 +39,11 @@ void SetMouseParams(float mdo, float ms, float mso) {
mouse_speed_offset = mso;
}
Uint32 MousePolling(void* param, Uint32 id, Uint32 interval) {
auto* controller = (GameController*)param;
if (!mouse_enabled)
return interval;
void SetMouseGyroRollMode(bool mode) {
mouse_gyro_roll_mode = mode;
}
void EmulateJoystick(GameController* controller, u32 interval) {
Axis axis_x, axis_y;
switch (mouse_joystick_binding) {
@@ -47,7 +56,7 @@ Uint32 MousePolling(void* param, Uint32 id, Uint32 interval) {
axis_y = Axis::RightY;
break;
default:
return interval; // no update needed
return; // no update needed
}
float d_x = 0, d_y = 0;
@@ -67,7 +76,35 @@ Uint32 MousePolling(void* param, Uint32 id, Uint32 interval) {
controller->Axis(0, axis_x, GetAxis(-0x80, 0x7f, 0));
controller->Axis(0, axis_y, GetAxis(-0x80, 0x7f, 0));
}
}
constexpr float constant_down_accel[3] = {0.0f, 10.0f, 0.0f};
void EmulateGyro(GameController* controller, u32 interval) {
// LOG_INFO(Input, "todo gyro");
float d_x = 0, d_y = 0;
SDL_GetRelativeMouseState(&d_x, &d_y);
controller->Acceleration(1, constant_down_accel);
float gyro_from_mouse[3] = {-d_y / 100, -d_x / 100, 0.0f};
if (mouse_gyro_roll_mode) {
gyro_from_mouse[1] = 0.0f;
gyro_from_mouse[2] = -d_x / 100;
}
controller->Gyro(1, gyro_from_mouse);
}
Uint32 MousePolling(void* param, Uint32 id, Uint32 interval) {
auto* controller = (GameController*)param;
switch (mouse_mode) {
case MouseMode::Joystick:
EmulateJoystick(controller, interval);
break;
case MouseMode::Gyro:
EmulateGyro(controller, interval);
break;
default:
break;
}
return interval;
}