Moved mouse-state code to a separate file, enabled mouse-look camera-mode for DXGI (#86)

src/pc/controller/controller_entry_point.c

@@ -12,13 +12,6 @@
 
 // moved these from sdl controller implementations
 
-int mouse_x;
-int mouse_y;
-
-int mouse_window_buttons;
-int mouse_window_x;
-int mouse_window_y;
-
 static struct ControllerAPI *controller_implementations[] = {
     #if defined(CAPI_SDL2) || defined(CAPI_SDL1)
     &controller_sdl,

src/pc/controller/controller_mouse.c

@@ -0,0 +1,121 @@
+#include "controller_mouse.h"
+
+#ifdef WAPI_DXGI
+    #define WIN32_LEAN_AND_MEAN
+    #include <windows.h>
+    extern HWND gfx_dxgi_get_h_wnd(void);
+    static bool mouse_relative_prev_cursor_state;
+
+#elif defined(CAPI_SDL1)
+    #include <SDL/SDL.h>
+
+#elif defined(CAPI_SDL2)
+    #include <SDL2/SDL.h>
+#endif
+
+bool mouse_init_ok;
+
+u32 mouse_buttons;
+s32 mouse_x;
+s32 mouse_y;
+
+u32 mouse_window_buttons;
+s32 mouse_window_x;
+s32 mouse_window_y;
+
+static bool mouse_relative_enabled;
+
+void controller_mouse_read_window(void) {
+    if (!mouse_init_ok) { return; }
+
+#if defined(WAPI_DXGI)
+    mouse_window_buttons =
+        (GetAsyncKeyState(VK_LBUTTON) ? (1 << 0) : 0) |
+        (GetAsyncKeyState(VK_MBUTTON) ? (1 << 1) : 0) |
+        (GetAsyncKeyState(VK_RBUTTON) ? (1 << 2) : 0);
+
+    POINT p;
+    if (GetCursorPos(&p) && ScreenToClient(gfx_dxgi_get_h_wnd(), &p)) {
+        mouse_window_x = p.x;
+        mouse_window_y = p.y;
+    }
+
+#elif defined(CAPI_SDL1) || defined(CAPI_SDL2)
+    mouse_window_buttons = SDL_GetMouseState(&mouse_window_x, &mouse_window_y);
+
+#endif
+}
+
+void controller_mouse_read_relative(void) {
+    if (!mouse_init_ok) { return; }
+
+#if defined(WAPI_DXGI)
+    mouse_buttons =
+        (GetAsyncKeyState(VK_LBUTTON) ? (1 << 0) : 0) |
+        (GetAsyncKeyState(VK_MBUTTON) ? (1 << 1) : 0) |
+        (GetAsyncKeyState(VK_RBUTTON) ? (1 << 2) : 0);
+
+    if (mouse_relative_enabled) {
+        static POINT p0;
+        POINT p1;
+        RECT rect;
+        if (GetWindowRect(gfx_dxgi_get_h_wnd(), &rect) && GetCursorPos(&p1)) {
+            mouse_x = p1.x - p0.x;
+            mouse_y = p1.y - p0.y;
+
+            p0.x = rect.left + (rect.right - rect.left) / 2;
+            p0.y = rect.top + (rect.bottom - rect.top) / 2;
+            SetCursorPos(p0.x, p0.y);
+        }
+    } else {
+        mouse_x = 0;
+        mouse_y = 0;
+    }
+
+#elif defined(CAPI_SDL1) || defined(CAPI_SDL2)
+    mouse_buttons = SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
+#endif
+}
+
+void controller_mouse_enter_relative(void) {
+    if (!mouse_relative_enabled) {
+        mouse_relative_enabled = true;
+
+    #if defined(WAPI_DXGI)
+        CURSORINFO ci;
+        ci.cbSize = sizeof(CURSORINFO);
+        if (GetCursorInfo(&ci)) {
+            mouse_relative_prev_cursor_state = (0 != ci.flags);
+        } else {
+            mouse_relative_prev_cursor_state = false;
+        }
+
+        ShowCursor(FALSE);
+
+    #elif defined(CAPI_SDL1)
+        SDL_WM_GrabInput(SDL_GRAB_ON);
+
+    #elif defined(CAPI_SDL2)
+        SDL_SetRelativeMouseMode(SDL_TRUE);
+
+    #endif
+    }
+}
+
+void controller_mouse_leave_relative(void) {
+    if (mouse_relative_enabled) {
+        mouse_relative_enabled = false;
+
+    #if defined(WAPI_DXGI)
+        ShowCursor(mouse_relative_prev_cursor_state);
+
+    #elif defined(CAPI_SDL1)
+        SDL_WM_GrabInput(SDL_GRAB_OFF);
+
+    #elif defined(CAPI_SDL2)
+        SDL_SetRelativeMouseMode(SDL_FALSE);
+
+    #endif
+    }
+}
+

src/pc/controller/controller_mouse.h

@@ -1,18 +1,23 @@
 #ifndef CONTROLLER_MOUSE_H
 #define CONTROLLER_MOUSE_H
 
-#include "controller_api.h"
+#include "controller_sdl.h"
+#include <stdbool.h>
 
-extern int mouse_x;
-extern int mouse_y;
+extern bool mouse_init_ok;
 
-extern int mouse_window_buttons;
-extern int mouse_window_x;
-extern int mouse_window_y;
+extern u32 mouse_buttons;
+extern s32 mouse_x;
+extern s32 mouse_y;
 
+extern u32 mouse_window_buttons;
+extern s32 mouse_window_x;
+extern s32 mouse_window_y;
 
-#define VK_BASE_MOUSE 0x2000
+void controller_mouse_read_window(void);
+void controller_mouse_read_relative(void);
 
-extern struct ControllerAPI controller_mouse;
+void controller_mouse_enter_relative(void);
+void controller_mouse_leave_relative(void);
 
 #endif

src/pc/controller/controller_sdl.h

@@ -5,12 +5,10 @@
 
 #define VK_BASE_SDL_GAMEPAD 0x1000
 
-// mouse buttons are also in the controller namespace (why), just offset 0x100
+// mouse buttons are also in the controller namespace, just offset 0x100
 #define VK_OFS_SDL_MOUSE 0x0100
 #define VK_BASE_SDL_MOUSE (VK_BASE_SDL_GAMEPAD + VK_OFS_SDL_MOUSE)
 
 extern struct ControllerAPI controller_sdl;
 
-void controller_sdl_read_mouse_window(void);
-
 #endif

src/pc/controller/controller_sdl1.c

@@ -125,13 +125,15 @@ static void controller_sdl_init(void) {
                 joy_axis_binds[i] = -1;
     }
 
-    if (newcam_mouse == 1 && gMenuMode == -1 && !gDjuiChatBoxFocus && !gDjuiConsoleFocus)
-        SDL_WM_GrabInput(SDL_GRAB_ON);
-    SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
+    if (newcam_mouse == 1 && gMenuMode == -1 && !gDjuiChatBoxFocus && !gDjuiConsoleFocus) {
+        controller_mouse_enter_relative();
+    }
+    controller_mouse_read_relative();
 
     controller_sdl_bind();
 
     init_ok = true;
+    mouse_init_ok = true;
 }
 
 static inline void update_button(const int i, const bool new) {
@@ -151,12 +153,15 @@ extern s16 gMenuMode;
 static void controller_sdl_read(OSContPad *pad) {
     if (!init_ok) return;
 
-    if (newcam_mouse == 1 && gMenuMode == -1 && !gDjuiChatBoxFocus && !gDjuiConsoleFocus)
-        SDL_WM_GrabInput(SDL_GRAB_ON);
-    else
-        SDL_WM_GrabInput(SDL_GRAB_OFF);
+    if (newcam_mouse == 1 && gMenuMode == -1 && !gDjuiChatBoxFocus && !gDjuiConsoleFocus) {
+        controller_mouse_enter_relative();
+    } else {
+        controller_mouse_leave_relative();
+    }
 
-    u32 mouse = SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
+    u32 mouse_prev = mouse_buttons;
+    controller_mouse_read_relative();
+    u32 mouse = mouse_buttons;
 
     if (!gInteractableOverridePad) {
         for (u32 i = 0; i < num_mouse_binds; ++i)
@@ -165,8 +170,7 @@ static void controller_sdl_read(OSContPad *pad) {
     }
 
     // remember buttons that changed from 0 to 1
-    last_mouse = (mouse_buttons ^ mouse) & mouse;
-    mouse_buttons = mouse;
+    last_mouse = (mouse_prev ^ mouse) & mouse;
 
     if (configDisableGamepads) { return; }
     if (!sdl_joy) return;
@@ -229,25 +233,6 @@ static void controller_sdl_read(OSContPad *pad) {
     }
 }
 
-void controller_sdl_read_mouse_window(void) {
-    if (!init_ok) { return; }
-
-#if defined(_WIN32) && (defined(RAPI_D3D12) || defined(RAPI_D3D11))
-    mouse_window_buttons = 0;
-    mouse_window_buttons |= (GetAsyncKeyState(VK_LBUTTON) ? (1 << 0) : 0);
-    mouse_window_buttons |= (GetAsyncKeyState(VK_RBUTTON) ? (1 << 1) : 0);
-    POINT p;
-    if (GetCursorPos(&p) && ScreenToClient(GetActiveWindow(), &p))
-    {
-        mouse_window_x = p.x;
-        mouse_window_y = p.y;
-    }
-#else
-    mouse_window_buttons = SDL_GetMouseState(&mouse_window_x, &mouse_window_y);
-#endif
-
-}
-
 static void controller_sdl_rumble_play(f32 strength, f32 length) { }
 
 static void controller_sdl_rumble_stop(void) { }
@@ -279,6 +264,7 @@ static void controller_sdl_shutdown(void) {
     }
 
     init_ok = false;
+    mouse_init_ok = false;
 }
 
 struct ControllerAPI controller_sdl = {

src/pc/controller/controller_sdl2.c

@@ -48,7 +48,6 @@ static u32 joy_binds[MAX_JOYBINDS][2] = { 0 };
 static u32 mouse_binds[MAX_JOYBINDS][2] = { 0 };
 
 static bool joy_buttons[MAX_JOYBUTTONS] = { false };
-static u32 mouse_buttons = 0;
 static u32 last_mouse = VK_INVALID;
 static u32 last_joybutton = VK_INVALID;
 static u32 last_gamepad = 0;
@@ -124,13 +123,13 @@ static void controller_sdl_init(void) {
         free(gcdata);
     }
 
-    if (newcam_mouse == 1)
-        SDL_SetRelativeMouseMode(SDL_TRUE);
-    SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
+    if (newcam_mouse == 1) { controller_mouse_enter_relative(); }
+    controller_mouse_read_relative();
 
     controller_sdl_bind();
 
     init_ok = true;
+    mouse_init_ok = true;
 }
 
 static SDL_Haptic *controller_sdl_init_haptics(const int joy) {
@@ -169,17 +168,17 @@ static inline void update_button(const int i, const bool new) {
 
 extern s16 gMenuMode;
 static void controller_sdl_read(OSContPad *pad) {
-    if (!init_ok) {
-        return;
-    }
+    if (!init_ok) { return; }
 
     if ((newcam_mouse == 1 || gFirstPersonCamera.enabled || gDjuiHudLockMouse) && gMenuMode == -1 && !gDjuiInMainMenu && !gDjuiChatBoxFocus && !gDjuiConsoleFocus && WAPI.has_focus()) {
-        SDL_SetRelativeMouseMode(SDL_TRUE);
+        controller_mouse_enter_relative();
     } else {
-        SDL_SetRelativeMouseMode(SDL_FALSE);
+        controller_mouse_leave_relative();
     }
 
-    u32 mouse = SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
+    u32 mouse_prev = mouse_buttons;
+    controller_mouse_read_relative();
+    u32 mouse = mouse_buttons;
 
     if (!gInteractableOverridePad) {
         for (u32 i = 0; i < num_mouse_binds; ++i)
@@ -187,8 +186,7 @@ static void controller_sdl_read(OSContPad *pad) {
                 pad->button |= mouse_binds[i][1];
     }
     // remember buttons that changed from 0 to 1
-    last_mouse = (mouse_buttons ^ mouse) & mouse;
-    mouse_buttons = mouse;
+    last_mouse = (mouse_prev ^ mouse) & mouse;
 
     if (configBackgroundGamepad != sBackgroundGamepad) {
         sBackgroundGamepad = configBackgroundGamepad;
@@ -278,24 +276,6 @@ static void controller_sdl_read(OSContPad *pad) {
     }
 }
 
-void controller_sdl_read_mouse_window(void) {
-    if (!init_ok) { return; }
-
-#if defined(_WIN32) && (defined(RAPI_D3D12) || defined(RAPI_D3D11))
-    mouse_window_buttons = 0;
-    mouse_window_buttons |= (GetAsyncKeyState(VK_LBUTTON) ? (1 << 0) : 0);
-    mouse_window_buttons |= (GetAsyncKeyState(VK_RBUTTON) ? (1 << 1) : 0);
-    POINT p;
-    if (GetCursorPos(&p) && ScreenToClient(GetActiveWindow(), &p))
-    {
-        mouse_window_x = p.x;
-        mouse_window_y = p.y;
-    }
-#else
-    mouse_window_buttons = SDL_GetMouseState(&mouse_window_x, &mouse_window_y);
-#endif
-}
-
 static void controller_sdl_rumble_play(f32 strength, f32 length) {
     if (sdl_haptic)
         SDL_HapticRumblePlay(sdl_haptic, strength, (u32)(length * 1000.0f));
@@ -342,6 +322,7 @@ static void controller_sdl_shutdown(void) {
 
     haptics_enabled = false;
     init_ok = false;
+    mouse_init_ok = false;
 }
 
 struct ControllerAPI controller_sdl = {

src/pc/djui/djui_cursor.c

@@ -1,7 +1,6 @@
 #include "djui.h"
 #include "djui_panel.h"
 #include "pc/controller/controller_mouse.h"
-#include "pc/controller/controller_sdl.h"
 #include "pc/gfx/gfx_window_manager_api.h"
 #include "pc/pc_main.h"
 
@@ -118,7 +117,7 @@ void djui_cursor_update(void) {
     if (sMouseCursor == NULL) { return; }
     if (!djui_panel_is_active()) { return; }
 
-    controller_sdl_read_mouse_window();
+    controller_mouse_read_window();
 
     // check if mouse is in control again
     static bool sFirstUpdate = true;

src/pc/djui/djui_hud_utils.c

@@ -3,7 +3,6 @@
 #include <PR/gbi.h>
 #include <string.h>
 
-#include "pc/controller/controller_sdl.h"
 #include "pc/controller/controller_mouse.h"
 #include "pc/gfx/gfx_pc.h"
 #include "pc/gfx/gfx_window_manager_api.h"
@@ -235,16 +234,12 @@ u32 djui_hud_get_screen_height(void) {
 }
 
 f32 djui_hud_get_mouse_x(void) {
-#ifdef HAVE_SDL2
-    controller_sdl_read_mouse_window();
-#endif
+    controller_mouse_read_window();
     return mouse_window_x / djui_gfx_get_scale();
 }
 
 f32 djui_hud_get_mouse_y(void) {
-#ifdef HAVE_SDL2
-    controller_sdl_read_mouse_window();
-#endif
+    controller_mouse_read_window();
     return mouse_window_y / djui_gfx_get_scale();
 }
 

src/pc/gfx/gfx_dxgi.cpp

@@ -708,7 +708,7 @@ static bool gfx_dxgi_has_focus(void) {
     return GetFocus() == dxgi.h_wnd;
 }
 
-HWND gfx_dxgi_get_h_wnd(void) {
+extern "C" HWND gfx_dxgi_get_h_wnd(void) {
     return dxgi.h_wnd;
 }
 

src/pc/gfx/gfx_dxgi.h

@@ -6,7 +6,7 @@
 #ifdef DECLARE_GFX_DXGI_FUNCTIONS
 void gfx_dxgi_create_factory_and_device(bool debug, int d3d_version, bool (*create_device_fn)(IDXGIAdapter1 *adapter, bool test_only));
 Microsoft::WRL::ComPtr<IDXGISwapChain1> gfx_dxgi_create_swap_chain(IUnknown *device);
-HWND gfx_dxgi_get_h_wnd(void);
+extern "C" HWND gfx_dxgi_get_h_wnd(void);
 void ThrowIfFailed(HRESULT res);
 void ThrowIfFailed(HRESULT res, HWND h_wnd, const char *message);
 #endif