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[rcore_web] Relative mouse mode issues. #3940

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merged 2 commits into from
May 16, 2024
Merged

[rcore_web] Relative mouse mode issues. #3940

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9ff4d55
[rcore_web] Relative mouse mode issues.
cemalgnlts Apr 27, 2024
ed76ebc
Review formatting.
cemalgnlts Apr 29, 2024
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3 changes: 3 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,9 @@ packages/
*.so.*
*.dll

# Emscripten
emsdk

# Ignore wasm data in examples/
examples/**/*.wasm
examples/**/*.data
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36 changes: 33 additions & 3 deletions src/platforms/rcore_web.c
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,8 @@ static const char cursorLUT[11][12] = {
"not-allowed" // 10 MOUSE_CURSOR_NOT_ALLOWED
};

Vector2 lockedMousePos = { 0 };

//----------------------------------------------------------------------------------
// Module Internal Functions Declaration
//----------------------------------------------------------------------------------
Expand Down Expand Up @@ -131,6 +133,7 @@ static EM_BOOL EmscriptenWindowResizedCallback(int eventType, const EmscriptenUi
static EM_BOOL EmscriptenResizeCallback(int eventType, const EmscriptenUiEvent *event, void *userData);

// Emscripten input callback events
static EM_BOOL EmscriptenMouseMoveCallback(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData);
static EM_BOOL EmscriptenMouseCallback(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData);
static EM_BOOL EmscriptenPointerlockCallback(int eventType, const EmscriptenPointerlockChangeEvent *pointerlockChangeEvent, void *userData);
static EM_BOOL EmscriptenTouchCallback(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData);
Expand Down Expand Up @@ -862,6 +865,8 @@ void SetMousePosition(int x, int y)
CORE.Input.Mouse.currentPosition = (Vector2){ (float)x, (float)y };
CORE.Input.Mouse.previousPosition = CORE.Input.Mouse.currentPosition;

if (CORE.Input.Mouse.cursorHidden) lockedMousePos = CORE.Input.Mouse.currentPosition;

// NOTE: emscripten not implemented
glfwSetCursorPos(platform.handle, CORE.Input.Mouse.currentPosition.x, CORE.Input.Mouse.currentPosition.y);
}
Expand Down Expand Up @@ -1270,6 +1275,9 @@ int InitPlatform(void)
emscripten_set_click_callback("#canvas", NULL, 1, EmscriptenMouseCallback);
emscripten_set_pointerlockchange_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, 1, EmscriptenPointerlockCallback);

// Following the mouse delta when the mouse is locked
emscripten_set_mousemove_callback("#canvas", NULL, 1, EmscriptenMouseMoveCallback);

// Support touch events
emscripten_set_touchstart_callback("#canvas", NULL, 1, EmscriptenTouchCallback);
emscripten_set_touchend_callback("#canvas", NULL, 1, EmscriptenTouchCallback);
Expand Down Expand Up @@ -1477,9 +1485,13 @@ static void MouseButtonCallback(GLFWwindow *window, int button, int action, int
// GLFW3 Cursor Position Callback, runs on mouse move
static void MouseCursorPosCallback(GLFWwindow *window, double x, double y)
{
CORE.Input.Mouse.currentPosition.x = (float)x;
CORE.Input.Mouse.currentPosition.y = (float)y;
CORE.Input.Touch.position[0] = CORE.Input.Mouse.currentPosition;
// If the pointer is not locked, follow the position
if (!CORE.Input.Mouse.cursorHidden)
{
CORE.Input.Mouse.currentPosition.x = (float)x;
CORE.Input.Mouse.currentPosition.y = (float)y;
CORE.Input.Touch.position[0] = CORE.Input.Mouse.currentPosition;
}

#if defined(SUPPORT_GESTURES_SYSTEM) && defined(SUPPORT_MOUSE_GESTURES)
// Process mouse events as touches to be able to use mouse-gestures
Expand All @@ -1505,6 +1517,18 @@ static void MouseCursorPosCallback(GLFWwindow *window, double x, double y)
#endif
}

static EM_BOOL EmscriptenMouseMoveCallback(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
{
// To emulate the GLFW_RAW_MOUSE_MOTION property.
if (CORE.Input.Mouse.cursorHidden)
{
CORE.Input.Mouse.previousPosition.x = lockedMousePos.x - mouseEvent->movementX;
CORE.Input.Mouse.previousPosition.y = lockedMousePos.y - mouseEvent->movementY;
}

return 1; // The event was consumed by the callback handler
}

// GLFW3 Scrolling Callback, runs on mouse wheel
static void MouseScrollCallback(GLFWwindow *window, double xoffset, double yoffset)
{
Expand Down Expand Up @@ -1598,6 +1622,12 @@ static EM_BOOL EmscriptenPointerlockCallback(int eventType, const EmscriptenPoin
{
CORE.Input.Mouse.cursorHidden = EM_ASM_INT( { if (document.pointerLockElement) return 1; }, 0);

if (CORE.Input.Mouse.cursorHidden)
{
lockedMousePos = CORE.Input.Mouse.currentPosition;
CORE.Input.Mouse.previousPosition = lockedMousePos;
}

return 1; // The event was consumed by the callback handler
}

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