74 lines
2.8 KiB
C
74 lines
2.8 KiB
C
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//SPDX-License-Identifier: LGPL-3.0-only
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//SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®
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// The C side of the Win32 gamepad backend (Crafter.Graphics-GamepadWin32.c):
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// Windows.Gaming.Input, through its C interface. mingw-w64's generated WinRT
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// headers declare that interface only to C; in C++ they declare the ABI
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// templates instead, and mingw-w64 14's windows.foundation.h doesn't compile
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// as C++ (IReference<boolean> and IReference<BYTE> are one type). Gamepad.cpp
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// drives it from the event loop's thread; only the connect and disconnect
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// notifications arrive on another, and they just queue.
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#ifndef CRAFTER_GRAPHICS_GAMEPAD_WIN32_H
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#define CRAFTER_GRAPHICS_GAMEPAD_WIN32_H
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// A connected gamepad: Windows.Gaming.Input's IGamepad.
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typedef struct CrafterWgiGamepad CrafterWgiGamepad;
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typedef struct CrafterWgiEvent {
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int added; // nonzero for a connect, zero for a disconnect
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CrafterWgiGamepad* gamepad; // holds a reference, which CrafterWgiRelease drops
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} CrafterWgiEvent;
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// A GamepadReading. `buttons` holds GamepadButtons bits, named below.
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typedef struct CrafterWgiReading {
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uint32_t buttons;
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double leftTrigger;
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double rightTrigger;
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double leftStickX;
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double leftStickY;
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double rightStickX;
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double rightStickY;
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} CrafterWgiReading;
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enum {
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CRAFTER_WGI_BUTTON_MENU = 0x1,
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CRAFTER_WGI_BUTTON_VIEW = 0x2,
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CRAFTER_WGI_BUTTON_A = 0x4,
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CRAFTER_WGI_BUTTON_B = 0x8,
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CRAFTER_WGI_BUTTON_X = 0x10,
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CRAFTER_WGI_BUTTON_Y = 0x20,
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CRAFTER_WGI_BUTTON_DPAD_UP = 0x40,
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CRAFTER_WGI_BUTTON_DPAD_DOWN = 0x80,
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CRAFTER_WGI_BUTTON_DPAD_LEFT = 0x100,
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CRAFTER_WGI_BUTTON_DPAD_RIGHT = 0x200,
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CRAFTER_WGI_BUTTON_LEFT_SHOULDER = 0x400,
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CRAFTER_WGI_BUTTON_RIGHT_SHOULDER = 0x800,
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CRAFTER_WGI_BUTTON_LEFT_THUMBSTICK = 0x1000,
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CRAFTER_WGI_BUTTON_RIGHT_THUMBSTICK = 0x2000,
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};
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// Starts listening for gamepads the first time it is called. Nonzero when
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// Windows.Gaming.Input is available, every time.
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int CrafterWgiStart(void);
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// Moves up to `capacity` of the connects and disconnects that came in since
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// the last call into `out`, oldest first, and returns how many it moved.
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size_t CrafterWgiTakeEvents(CrafterWgiEvent* out, size_t capacity);
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// The gamepad's current state; nonzero on success.
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int CrafterWgiRead(CrafterWgiGamepad* gamepad, CrafterWgiReading* out);
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// Sets the two rumble motors, each 0..1, until set again.
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void CrafterWgiVibrate(CrafterWgiGamepad* gamepad, double low, double high);
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// Drops the reference an event handed over.
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void CrafterWgiRelease(CrafterWgiGamepad* gamepad);
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#ifdef __cplusplus
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}
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#endif
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#endif
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