Sdl mouse motion. button := SDL_BUTTON(SDL_BUTTON_RIGHT) (= 4.


Sdl mouse motion This lesson covers techniques for tracking the mouse independently of the event loop, and practical examples of why we’d want to. I am using Ubuntu 10. 04. The loop looks like this, Remarks. left button) The application determines that a slider was clicked and calls SDL_SetWindowRelativeMouseMode(window, true) The application gets a SDL_EVENT_MOUSE_MOTION with all 0 state. y; for my camera. This is currently only implemented on Windows and Linux This function generates a mouse motion event. This only catches maybe 50% then without it. h. *) When using SDL 1. I am experiencing a problem with the absolute mouse position in win2k, I am working in openGL. rs. y; event. mshah. To simulate a mouse that can move offscreen, always keep the mouse centered and store it's relative motion. (A bit annoying that it's not Nov 29, 2012 · The mousemotion is even weirder, because the mouse emulation patch generates very sudden, fast motion when there is no motion at all. SDL_FlushEvents(SDL_MOUSEMOTION, SDL_MOUSEMOTION+0x50). h file. You're ignoring this value and reading data from event anyway; noone said this event data is valid, especially first time, since it wasn't even initialised. This function generates a mouse motion event if relative mode is not enabled. SDL_EventType. This can provide smoother and more reliable mouse motion for some older games, which continuously calculate the distance travelled by the mouse pointer and warp it As I have tested, it seems that the code will execute in the [if] rather than in the [else] if relative_mode_warp = true by setting the hint. Jul 25, 2024 · Move the Wayland pointer warp emulation code up to the SDL mouse layer, and acti … vate it when a client attempts to warp a hidden mouse cursor when the hint is set. The SDL1 library uses an old Windows trick where it centers the mouse cursor and then later reads how far the cursor moved from center (while the cursor is "captured" and invisible) before centering it again. h" /* This function may run in a separate event thread */ int FilterEvents(const Dec 15, 2018 · SDL_Event e; SDL_PollEvent(&e); switch (e. Nov 27, 2021 · Call the function described at the link you found; with pointers to the two int variables which you want to receive the coordinates. motion is potentially undefined behavior. y for the relative mouse coordinates makes SDL2 responsiveness VERY (bool) Returns true on success or false on failure; call SDL_GetError() for more information. xrel for respectively absolute and relative mouse movement, both int. In other words, you are invoking undefined behavior and it is not a problem with SDL and the right mouse button. The SDL_Event structure is the core of all event handling in SDL. 0, or pre1. The mouse motion rotates my camera in my game. BrunoAlma 24 juillet 2018 à 11:22:38. Also the SDL_WarpMouseInWindow is exposed in the May 25, 2024 · Here is the class for the dot we're going to be moving around on the screen. While the window has focus and relative mouse mode is enabled, the cursor is hidden, the mouse position is constrained to the window, and SDL will report continuous relative mouse motion even if the mouse is at the edge of the window. button = event. scrolling the map at the edge of the window), it is much easier for an application to draw a cursor at a fixed location than to try to replicate the mouse acceleration algorithm. SDL_WarpMouse -- Set the position of the mouse cursor. SDL_GetRelativeMouseMode Sep 6, 2021 · I found the main reason that causes the xrel and yrel values to become so wried, that is ImGui_ImplSDL2_NewFrame(window). How is this consistent with the rest of mouse Return Value (bool) Returns true on success or false on failure; call SDL_GetError() for more information. sdl2-sys-0. If you are moving the mouse, the SDL_MOUSEMOTION event is triggered. If relative mouse mode is enabled with SDL_SetRelativeMouseMode(), then the mouse will give relative motion events even when the cursor reaches the edge of the screen. Mouse button event structure (event. Expected parameters include: window - the window to move the mouse into, or undef for the current mouse focus x - the x coordinate within the window y - the y coordinate within the window SDL_WarpMouseGlobal( ) Move the mouse to the given position in global screen space. SDL_GetMouseState(None, None) # just returns 0, so I tried the next few lines print state for event in event_queue: if event. So far I have been able to get the mouse press and the mouse motion working separately, but not at the same time. SDL2 - Keyboard events for character movement have unexpected The button state can be interpreted using the SDL_BUTTON macro (see SDL_GetMouseState). 37. The keyboard moves the camera forward, backward, and so forth (Controls much like a first person shooter). In order to activate camera rotation with the mouse, the user must hold down the right click button. From this point on, the mouse will not move outside of the window, regardless Jan 7, 2018 · SDL mouse motion event provides inconsistent xrel, yrel values under mouse button down event type. maxis. On finger-down, SDL moves the "fake" mouse location from it's previously fake location to the new finger location by generating a mouse motion event. * * This function will flush any pending mouse motion. button := SDL_BUTTON(SDL_BUTTON_RIGHT) (= 4) so it's not as clean as I'd have liked. 20 fixes these issues and SDL_MULTIGESTURE and SDL_MOUSEMOTION are then properly reported. The source code and spaceship bitmap are available at the Gigi Labs BitBucket repository. As you can see, I can't draw to save my life. I am processing the SDL_MOUSEMOTION message. If you only want to clear mouse events, it would be e. Remarks. Related Structures. May 29, 2021 · I'm creating a breakout like game, and I'm wanting to move the paddlethe orthographic projection matrix is equal to the screen size in pixels, so, if I set the paddles horizontal motion to adjust in one pixel increments, the motion is smooth, but it is not fast. Load 7 more related questions Show fewer related questions Jul 10, 2013 · OK, can somebody help me figure out how these are supposed to work? I imagine that only motion within the window is reported? Also the wiki makes a confusing statement: “Only relative motion events will be delivered, the mouse position will not change. Is there a way to ignore mouse event? At least these movement ones. event. The "motion" field has sub-fields "x" and "y" which are of type Uint16. What I want is a easy tutorial of how to handle mouse motion input in SDL 2. The mouse position is finally updated some time later, when the (physical hardware) mouse has moved again. Detection: Use SDL_MOUSEMOTION to detect a mouse motion event in the event loop. type == sdl2. *) Defined in <SDL3/SDL_events. It never worked on svgalib, though. With this call, though, the mouse is trapped and limited to move within the window, and not just at the center. May 15, 2019 · SDL_WarpMouseInWindow() is one of the most confusing functions in SDL2 to me. Jan 16, 2015 · def mouse_pos(self): # ideally, just return <some. button := SDL_BUTTON_RIGHT (= 3) and on a right click motion, event. yrel; } break; } When I run the program, nothing happens, however, once I first move the mouse, the SDL_MOUSEMOTION event keeps firing and the mouse keeps moving. SDL_ShowCursor(SDL_DISABLE); SDL_SetRelativeMouseMode(SDL_TRUE); SDL_WarpMouseInWindow(window, SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2); Sep 20, 2015 · A quick precision: event. *) Header File. Jan 11, 2024 · Additional info: Whatever the reason may be why SDL_GetGlobalMouseState makes problems on my physical system only - when I add videodata->global_mouse_changed = SDL_TRUE; to case XI_Motion in SDL_x11xinput2. Note that thi (This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version. May 11, 2022 · Additionally gesture events (SDL_MULTIGESTURE) are not reported. When I comment out this code, the relative mouse report normally, but what if I add this line into the main loop, the relative mouse will report weird coordinate that force my mouse back to the center of the screen, I doubt maybe is the ImGui try to control the mouse event Event Type: SDL_MOUSEMOTION is an event type constant, while SDL_MouseMotionEvent is a structure containing detailed information about the mouse motion event. Functions. This function is available since SDL 3. But then since SDL somehow must know how to letterboxing, they should provide a way to figure out what the mouse coordinate in relation of the texture placement, since it must has the code to do it, it's my sane assumption that I can ask that data, so I don't need that horrific code to do the calculation myself :) But When this hint is set, the mouse cursor is hidden, and multiple warps to the window center occur within a short time period, SDL will emulate mouse warps using relative mouse mode. Oct 17, 2012 · This does work - though it seems from a brief experiment that event. Here is the relevant code: Dec 2, 2009 · Hello, I am familiar with the SDL basics but I need some help with this. SDL2 was the previous version!) SDL_EVENT_MOUSE_MOTION. It's enabled by default, though obviously is a no-op if OpenGL scaling is not used. Mouse motion event structure (event. ” I assume that only applies to what SDL reports? Because the cursor seemed to be able to move away from the window without much trouble to me. 2 vers SDL2 c'est pas facile. Sujet résolu. If you ever uninstall those drivers incorrectly you WILL lose control over your mouse and keyboard (thus likely forcing a complete Windows reinstall), unless you restore from the restore point. But it won't return true so i can't seem to get it to work. Jul 11, 2023 · I then figured that SDL_WarpMouseInWindow() created a problem because it was not actually moving the mouse on the web (which I knew but didn't think of it making a mouse motion event). There, you call SDL_PollEvent but you don't check what type of event you are getting back, so accessing myEvent. Jun 20, 2020 · This might solve your problem. Simply put, a SDL_MOUSEMOTION type event occurs when a user moves the mouse within the application window or when SDL_WarpMouse is (This is the documentation for SDL3, which is the current stable version. I'm using SDL 2. Hi there! 🙂 In this article, we’ll learn how to handle keyboard and mouse events, and we’ll … Continue reading Handling Keyboard and Mar 27, 2002 · Subject: Re: [SDL] Incorrect mouse motion… I am new to SDL. See Also. Defined in SDL_events. state field: Try to replace: The reason I need booleans is so I can test whether the mouse has moved or scrolled OUTSIDE the class. 2 it the way to implement full screen or windowed applications with "no cursor" you did the following: SDL_ShowCursor(SDL_DISABLE); SDL_WM_GrabInput(SDL_GRAB_ON); See Trap mouse in SDL. Please refer to SDL_EventType for details. The current button state is returned as a button bitmask, which can be tested using the SDL_BUTTON(X) macros (where X is generally 1 for the left, 2 for middle, 3 for the right button), and x and y are set to the mouse cursor position relative to the focus window. Mouse buttons and mouse motion are separate events, so you're getting a crash because 'some_dot' is always NULL when the mouse motion code is run. The record structure of the SDL_MouseMotionEvent is shown below: Filtering and Handling Events. Unfortunately I am unable to get the same behavior with SDL 2. Another method would be to track the current and next positions yourself and manually calculating the differential, to get the distance moved. Annoyingly on a right click event. It works wherever the mouse button is clicked. SDL_MouseMotionEvent is a member of the SDL_Event union and is used when an event of type SDL_MOUSEMOTION is reported. type == SDL_MOUSEMOTION and then use windowEvent. This My game gets perfectly smooth framerates, until I start moving the mouse, at which point the event queue clogs up and things get all stuttery. mouse. 12 + GNU/Linux Ubuntu 14. A variable controlling whether a motion event should be generated for mouse warping in relative mode. Some Extra Notes: Even if you put some extra checking on SDL_WINDOWEVENT_FOCUS_GAINED or LOST. Sep 18, 2001 · I remember that the mouse used to work fine on fbcon in April this year (libsdl probably version 1. SDL2 was the previous version!) SDL_MouseRawAxisEvent. Nov 4, 2012 · I have a simple script where by i want the script to load a second button when the mouse is hovering over the first initial button. 3. button field if you have checked that the type is SDL_MOUSEMOTION. But since this is a bitmap, we don't need the SDL_image extension. 1. Feb 23, 2014 · //The button class Button { private: //The attributes of the button SDL_Rect box; //The part of the button sprite sheet that will be shown SDL_Rect* clip; public: //Initialize the variables Button( int x, int y, int w, int h ); //Handles events and set the button's sprite region void handle_events(); //Shows the button on the screen void show(); }; Apr 22, 2021 · SDL_PumpEvents(); SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT); If required, you can check actual values of event types in SDL_event. relative_mode_warp = false, and it does go into SDL_PrivateSendMouseMotion, it will not warp the mouse since again the condition is around line 507. The button state can be interpreted using the SDL_BUTTON macro (see SDL_GetMouseState). SDL Jun 17, 2023 · SDL has code internally to replicate the OS mouse acceleration curves, so for applications that do want normal mouse motion while also getting relative deltas (e. however, if i do not set the hint, i. SDL2 Playlist: https://www. Nov 6, 2017 · If you require relative movement, FPS style, SDL has a SDL_SetRelativeMouseMode function as seen here. In this lesson, we will cover in detail how we can detect and react to the two main forms of mouse input - the user moving their cursor, and the user clicking their mouse buttons. x and event. * * \param enabled SDL_TRUE to enable relative mode, SDL_FALSE to disable. The issues are still there when clicking DESKTOP, Then Window Title, DESKTOP, then Window Title. testrelative adds the ability to test the warp emulation activation/deactivation with the --warp parameter and 'c' key for toggling cursor vis Oct 13, 2024 · class LButton { public: //Button dimensions static constexpr int kButtonWidth = 300; static constexpr int kButtonHeight = 200; //Initializes internal variables LButton(); //Sets top left position void setPosition( float x, float y ); //Handles mouse event void handleEvent( SDL_Event* e ); //Shows button sprite void render(); private: enum eButtonSprite { eButtonSpriteMouseOut = 0 Aug 10, 2014 · I am making a 2D bird's-eye view shooter with C++ using the SDL2 library in Code::Blocks, compiled with MinGW, running on Windows 7. xrel/yrel xrel and yrel report values from -4 to 4 when the mouse is not even moving! Furthermore, actually moving my mouse does not seem to correlate whatsoever to the xrel and yrel 's being reported. ) SDL_MOUSEMOTION Aug 11, 2022 · This avoids the application having to filter out large relative motion due to warping. On 2014-02-23 01:47:29 +0000, Sam Lantinga wrote: Feb 11, 2018 · update the mouse position correctly (as we confirm by calling SDL_GetMouseState() after all 3 events have been processed and the queue has become empty again). + */ +#define SDL_HINT_MOUSE_RELATIVE_WARP_MOTION "SDL_MOUSE_RELATIVE_WARP_MOTION" + /** * \brief A variable controlling whether mouse events should generate synthetic touch events * diff --git a/include/SDL_mouse. If you would like to center the mouse pointer all the time even if the mouse is moved, use SDL_WarpMouseInWindow each frame to center the mouse pointer. Your function, handle_input() gets called once for each separate event. com/playlist?list=PLvv0ScY6vfd-p1gSnbQhY7vMe2rng0IL0 Find full courses on: https://courses. (This is the documentation for SDL3, which is the current stable version. Learn how to detect and handle mouse input events in SDL, including mouse motion, button clicks, and window entry/exit. SDL_WarpMouseGlobal Remarks. Version. button) { case The Simple Directmedia Layer Wiki. SDL2 was the previous version!) SDL_MouseMotionEvent. This function generates a mouse motion event. Rather than using the "button" field of the SDL_Event structure, the "motion" field is what tracks mouse movements. SDL2 was the previous version!) SDL_MouseButtonEvent. 04 LTS, I'm trying to hide and capture mouse movement in order to implement mouse movement found commonly in FPS games. Share Improve this answer The button state can be interpreted using the SDL_BUTTON macro (see SDL_GetMouseState). The SDL_WarpMouseInWindow shouldn't be used like that and instead there may be an #ifdef for emscripten or (which I haven't tested) SDL_SetRelativeMouseMode(). SDL2 can't get mouse input when key is depressed. If you have a frame update loop, keep track of whether you've received a mouse motion event in the previous frame and update your menu timer accordingly. *) Return Value Returns a 32-bit button bitmask of the current button stateRemarks. SDL2 was the previous version!) SDL_HINT_MOUSE_RELATIVE_SYSTEM_SCALE. Mar 5, 2018 · Contrary to MouseMotionEvent, MouseWheelEvent does not provide the mouse location (the fields x and y are used for horizontal and vertical scrolling instead). Mouse motion handling in SDL 2. typedef struct SDL_MouseWheelEvent {SDL_EventType type; /**< SDL_EVENT_MOUSE_WHEEL */ Uint32 reserved; Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ SDL_WindowID windowID; /**< The window with mouse focus, if any */ SDL_MouseID which; /**< The mouse instance id in relative mode or 0 */ float x; /**< The amount scrolled horizontally, positive to the right and Dec 4, 2023 · I was wondering what is best way to set this up? My existing solutions involve checking if the mouse button is held down and if it is, moving the camera relative to the direction of the motion of the mouse. The relative motion is translated to your virtual mouse that can now move anywhere and is represented by a sprite. 10 and have been using the following: SDL_ShowCursor( SDL_DISABLE ); SDL_WarpMouse( x, y ); Neither of which function properly at all; it would appear to have no visual effect, there is however a triggered mouse motion event as the documentation states, but the mouse does not move in any or disappear on screen. SDL Wiki. SendInput), until a concrete device id is detected and bound to player 1. How to simulate mouse button 4 and mouse button 5 click in C#? Relative motion is stored in xrel and yrel and is relative to the last motion event. Mar 13, 2023 · I am using SDL2 in C# to make a first person game. Once you have an image, you'll want to create a new Visual Studio project, wire it up to work with SDL2, and then add some code to display a window and the spaceship in it. SDL provides SDL_GetMouseState() to retrieve the current mouse position, but it is not expressed in the same coordinate system: Also, just for safety make a Windows Restore Point as backup before installing it. I implemented the above as: SDL_Window* window; // (This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version. Sep 25, 2014 · Using SDL-C library, mouse motion bug in simple game. SDL2 was the previous version!) SDL_EventType. mouse_x_y> event_queue = sdl2. SDL mouse handling. Header File Feb 15, 2017 · SDL_PollEvent doesn't block until event happens but instead returns 1 if it written event data into given structure, or 0 otherwise. SDL_Event is a union of all event structures used in SDL. type) { case SDL_MOUSEMOTION: { YCam += e. 0, programming on Debian DOSBox uses the SDL library to read the mouse motion. Hey, This might not be as intensive of help as you'd like, but it should help you out. This function should only be called on the main thread. Looking at the table below tells us that SDL_MOUSEMOTION events are handled within the SDL_MouseMotionEvent structure which is the motion member of SDL_Event. This is currently only implemented on Windows and Linux Jan 20, 2018 · What it means is if my window is 1280 width I cannot rotate more if mouse coordinates rich 0 or 1279. mouseX/Y confusion when dragging a child of a container. No such page 'SDL3/SDL_SetRelativeMouseMode' yet. You can create an SDL_Event structure, set its type and relevant data, and then push it to simulate the event. 3. SDL_Event. Mar 11, 2014 · If so, converting an "event" (mouse position) from Window Frame to Renderer Frame is king of buggy, we could only convert to 1 specific Renderer Frame (or to the only renderer if only 1 one exists). 0 < The mouse instance id, or SDL_TOUCH_MOUSEID (This is the documentation for SDL3, which is the current stable version. But however thanks for the link! And if you know how to handle SDL_MouseMotionEvent. SDL mouse motion event provides inconsistent xrel, yrel values under mouse button down event type. Everything is going along smoothly, but I've encountered one major problem and I have not been able to find any working solution. g. Oct 7, 2014 · I'm using SDL 2. A variable controlling whether the system mouse acceleration curve is used for relative mouse motion. Instead, use the motion. I've also noticed that setting the hint SDL_TOUCH_MOUSE_EVENTS to 0 restores the functionality of SDL_MULTIGESTURE events (but doesn't effect motion events. Jul 24, 2018 · SDL2 mouse motion SDL 1. In the end, I need to be able to click on a object and find how much the mouse is dragged from that selected object. Feb 22, 2014 · The correct method for trapping the mouse under SDL is: SDL_WM_GrabInput( SDL_GRAB_ON ); This tells SDL that your intention is to actually grab full control of mouse + keyboard (see the documentation), and to therefore keep the mouse inside the window no matter what. 0. This forces SDL to only report motion events, so the mouse position doesn't change. When I move the mouse slowly, the coords track correctly, but when I move the mouse quickly from left to right they are off by up to 500 pixels The Simple Directmedia Layer Wiki. Everything is okay when mouse doesn't move, but after it moves it's terrible. Simply put, a SDL_MOUSEMOTION type event occurs when a user moves the mouse within the application window or when SDL_WarpMouse is Jan 1, 2016 · For mouse motions, mouse buttons and the mouse wheel there are three different mouse event structures: SDL_MouseMotionEvent, SDL_MouseButtonEvent and SDL_MouseWheelEvent. I've read that relative mouse should help. As I see it now its like this on WinXP Mouse motion events are put on the queue at a maximum rate of the rate you call SDL_PumpEvents(). SDL_MouseButtonEvent. It does not work for me though. Nov 30, 2007 · Hi, I have my application set up to receive keyboard and mouse motion events. I can already test for key presses and mouse button presses; but mouse wheel and mouse moved are another issue; primarily because I need to obtain . I tried taking the mouse handling out of the event loop, but the MOUSEMOTION events are still being caught and slowing things down. 0). (bool) Returns true on success or false on failure; call SDL_GetError() for more information. This function is available since SDL 2. Set the position of the mouse cursor (generates a mouse motion event). It seems that when SDL sends a window-gained-mouse-focus event, it doesn't May 10, 2014 · SDL doesn't send 'mouse motion stopped' events but conceptually, a 'mouse motion stopped' event is a frame where you haven't received a mouse motion event. I would appreciate some copy/paste piece of code actually used for this if it is no bother. Jul 20, 2013 · The SDL updates the position of the mouse internally in SDL_PrivateSendMouseMotion, which is called by various mouse related functions in the same file. But setting the window to fullscreen, the events suddenly stop arriving. As I move the mouse around the following is somehow showing true and displaying the MOTION output over the entire canvas until i reset it by clicking and releasing the LEFT Mouse button again. This struct is available since SDL 3. Syntax May 25, 2024 · Like with key presses, SDL has event structures to handle mouse events such as mouse motion, mouse button presses, and mouse button releasing. driver is the current video driver, mouse is the position from the latest mouse motion event, and gmouse is the position from SDL_GetGlobalMouseState. before the main loop. It has some constants to define its dimensions and velocity. SDL_SetWindowGrab(window, SDL_TRUE); SDL_SetRelativeMouseMode(SDL_TRUE); int prev_x, curr_x, rel_x; // previous, current and relative x-coordinates int prev_y, curr_y, rel_y; // previous, current and relative y-coordinates // Load the current position curr_x = eventSDL Feb 3, 2016 · SDL mouse motion event provides inconsistent xrel, yrel values under mouse button down event type. Nov 15, 2024 · Originally reported in ppy/osu#30641 Moving the pen over the tablet (without pressing down) generates SDL_EVENT_MOUSE_MOTION events when in windowed. CategoryAPI, CategoryAPIStruct, CategoryEvents. I expect relative mouse events to be relative to the last mouse event on the queue (and not relative to the last 'hardware' sample) but I haven't tested this yet. SDL_PumpEvents() state = sdl2. Dec 2, 2024 · SDL_SetRelativeMouseMode(): Enables or disables relative mouse mode; SDL_GetRelativeMouseMode(): Checks if relative mouse mode is currently active; SDL_GetRelativeMouseState(): Retrieves relative mouse movement and button states; SDL_RaiseWindow(): Ensures the correct window has input focus Aug 26, 2018 · SDL mouse motion event provides inconsistent xrel, yrel values under mouse button down event type. #include <stdio. motion. to. It is slightly updated here. We can check for the SDL_MOUSEMOTION event type within our switch statement like so: Jun 8, 2019 · Yes, I'm using RenderSetLogicalSize indeed. I have some sprite on screen and I have to move it (drag it) with the mouse pointer around the screen. Simple Directmedia Layer. Thread Safety Aug 25, 2015 · Inside the event loop, I check for windowEvent. Aug 8, 2013 · Using SDL-C library, mouse motion bug in simple game. You can simulate various mouse events, such as button presses, releases, and motion events. SDL_GetGlobalMouseState; SDL \brief Mouse motion event structure (event. button. Contribute to libsdl-org/SDL development by creating an account on GitHub. Dec 17, 2014 · SDL_Event is a union, so you should not be using the event. Sorry to forget to mention that. io/ Join as Member to Su May 7, 2015 · I am trying to use case statments to get the mouse motion coordinates only while the left mouse button is pressed down. It should move when the mouse pointer is on the sprite and left button is pressed and mouse is moving. Oct 17, 2024 · Actually, WoodenEye 008 treats mousse id 0 as the "global fallback default mouse" (and keyboard id 0 as the global fallback keyboard) which means that you can always play in singleplayer mode as player 1 on emulated mouse/keyboard inputs (i. If no, maybe we could add a function to get the renderer of a Window : SDL_renderer * SDL_GetRendererOfWindow(SDL_window*) Also. This is currently only implemented on Windows and Linux While the mouse is in relative mode, the cursor is hidden, the mouse position is constrained to the window, and SDL will report continuous relative mouse motion even if the mouse is at the edge of the window. This occurs even when I've stopped moving my mouse. SDL (This is the documentation for SDL3, which is the current stable version. Dec 18, 2024 · From 3001c61de096d14fc741d636ecbd21108f3763b6 Mon Sep 17 00:00:00 2001 From: Frank Praznik <[EMAIL REDACTED]> Date: Wed, 18 Dec 2024 12:08:28 -0500 Subject: [PATCH Jan 11, 2015 · (meaning SDL thinks the left mouse button is still being held down). A failure of this function usually means that it is unsupported by a platform. x; event. Simplified, the function works like this one: Dec 14, 2024 · Here's a YouTube video showcasing the below code. sdl2-sys 0. I wonder if there is a generally agreed upon way of doing this? resending: I recently did a big upgrade (Ubuntu Dapper -> Edgy -> Feisty), and the mouse no longer works in certain programs (those that have special handling, like lbreakout2 or engima), and has similar problems in full screen programs (though those programs ran with messed-up graphics previous to the upgrade, so I can't say whether the mouse worked in those before the upgrade). I used GetMouseState(x,y) to get the mouse click event. Kinda like the old WarpMouse call. 4 + Code::Blocks 13. The current button state is returned as a button bitmask, which can be tested using the SDL_BUTTON(X) macros (where X is generally 1 for the left, 2 for middle, 3 for the right button), and x and y are set to the mouse deltas since the last call to SDL_GetRelativeMouseState() or since event initialization. SDL_MouseMotionEvent. h b/include/SDL_mouse. It calculates the relative motion by keeping track of previous and current absolute positions. Searching around the web, I've found that SDL2 allows for mouse trapping with the call to SDL_SetRelativeMouseMode(). x has been replaced by event. state at all times. *) The Simple Directmedia Layer Wiki. Jul 9, 2013 · SDL doesn't detect mouse movements outside its window, so you cannot have negative mouse coordinates. Jul 29, 2023 · When a mouse button is pressed inside the area you defined, the program goes into moveRectangle and stays there until a mouse button is released. wheel. Event type set to SDL_MOUSEBUTTONDOWN even when not pressing any button. . The other way to do the same is to process entire event queue until it is empty - e. ) SDL_MouseButtonEvent. *) Docs. Apr 20, 2014 · SDL mouse motion event provides inconsistent xrel, yrel values under mouse button down event type. Thread Safety In Relative Mode, the SDL-cursor's position usually contradicts the platform-cursor's position as manually calculated from SDL_GetGlobalMouseState() and SDL_GetWindowPosition. ” From my tests, the mouse warps immediately, but the corresponding mouse motion event is queued at the end of the queue. ” and “This function generates a mouse motion event. Once detected, you can access the motion member of the SDL_Event structure to get details. Nov 8, 2015 · This article was originally posted as “SDL2: Keyboard and Mouse Movement (Events)” at Programmer’s Ranch on 12th February 2014. (This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version. let’s see how to handle a mouse click: case sdl_mousebuttondown: switch (event. ). It's hard to pin down exactly what's Feb 27, 2012 · I need to define rectangular areas on the sdl window so that when the mouse button is clicked on a particular area some action has to be performed. But this is not very responsive and leads to stuttering. We can check for the SDL_MOUSEMOTION event type within our switch statement like so: case SDL_MOUSEMOTION: All we need do now is read the information out of the motion member of test_event. The types of events that can be delivered. If the cursor is hidden (SDL_ShowCursor(0)) and the input is grabbed (SDL_WM_GrabInput(SDL_GRAB_ON)), then the mouse will give relative motion events even when the cursor reaches the edge fo the screen. The target is to draw a window with a red Return Value Returns a 32-bit button bitmask of the relative button stateRemarks. youtube. c, the problem is fixed. h> #include <stdlib. This function will flush any pending mouse motion. It has a constructor, an event handler, a function to move it every frame, and a function to render it. path. The docs say: “Use this function to move the mouse to the given position within the window. all you need to do is handle the appropriate event. h> This struct is available since SDL 3. This function generates (This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version. Currently, I initialize SDL using the foll (This is the documentation for SDL3, which is the current stable version. Mouse motion event structure (event. If not then some useful Dec 27, 2013 · SDL_ShowCursor( SDL_DISABLE ); SDL_WarpMouse( x, y ); Neither of which function properly at all; it would appear to have no visual effect, there is however a triggered mouse motion event as the documentation states, but the mouse does not move in any or disappear on screen. ) SDL_HINT_MOUSE_RELATIVE_WARP_MOTION. 5 in my application (Win10 x64 vc12), where I implemented the following behaviors: Approaching left edge of window with cursor: sets mouse mode to relative Right click: toggles m Sep 19, 2012 · Mouse Motion: The last aspect of mouse input is motion or cursor position. Mouse raw motion and wheel event structure (event. Jan 25, 2022 · Using SDL2 and Vulkan on Ubuntu 20. I tried SDL_WarpMouseInWindow(window, WIDTH / 2, HEIGHT / 2);, but the movement caused by this function is a mouse event, so the camera doesn't move. Oct 6, 2020 · In the event handling loop of SDL2, calling the method SDL_GetMouseState(&amp;x,&amp;y); or using event. Both the Left Mouse Button, and the Variable only set in the MouseDown event is active! Jun 29, 2023 · * While the mouse is in relative mode, the cursor is hidden, the mouse * position is constrained to the window, and SDL will report continuous * relative mouse motion even if the mouse is at the edge of the window. Thread Safety. The X/Y coordinates of the mouse xrel, yrel Relative motion in the X/Y direction DESCRIPTION. Do you think you can give me a code example?. CategoryMouse. The mouse pointer should, if you've made everything right, be centered and trapped inside the window when you're starting the program. SDL_WarpMouseInWindow Oct 17, 2024 · The application gets a SDL_EVENT_MOUSE_BUTTON_DOWN (eg. Nov 16, 2015 · handling mouse events is also very easy. e. My code explanation: 1st) I create a resizable window (SDL_Window with 1280x720 pixels) 2nd) I create a small rectangle inside it to act as a button (SDL_Rect with 150x50 pixels) Feb 8, 2022 · SDL: how to get the mouse motion while the left mouse button is down using case statement. Here’s an example of simulating a mouse motion event: Mar 10, 2017 · I'm using SDL 2. Jun 2, 2022 · Context: I'm using an abstraction layer over SDL2 where the application gets (only) mouse-motion events with the coordinates (x,y from the SDL motion event), not the relative coordinates. Mar 28, 2002 · in order to resolve mouse motion problems with SDL and w32, i must disable the windows mouse acceleration but i don’t know how i can do this with a C++ command thanks Simple Directmedia Layer Mouse acceleration I've been unable to hide the mouse cursor (properly) using SDL. Hot Network Questions This function generates a mouse motion event if relative mode is not enabled. 4. Dec 13, 2023 · For &quot;training&quot; reasons, i am trying to develop a simple graphic application (using SDL2 and directfb) for an arm board equipped with a touchscreen. h> #include "SDL. Note that this function will appear to succeed, but not actually move the mouse when used over Microsoft Remote Desktop. Related Enumerations. SDL_MOUSEMOTION: # this works, except if the mouse hasn't moved yet, in which case Yes, But in SDL 2. Downgrading to 2. 0. I want to center the mouse in the window and still collect mouse input to move the camera. SDL_CaptureMouse Dec 19, 2024 · From 5c0f8dc179362d3bcdc80c3863205245f4541643 Mon Sep 17 00:00:00 2001 From: expikr <[EMAIL REDACTED]> Date: Thu, 19 Dec 2024 09:29:27 +0800 Subject: [PATCH] add My code receives mouse motion events (until the mouse hits the edge of the window) if I simply grab and hide the mouse, but none at all if it enters relative mode. 2. If relative mode is enabled, you can force mouse events for the warp by setting the SDL_HINT_MOUSE_RELATIVE_WARP_MOTION hint. *) We use the SDL_PushEvent() function to push custom events into the SDL event queue. A little more research tells use that SDL_MOUSEMOTION events are handled within the SDL_MouseMotionEvent structure which is the motion member of SDL_Event. These functions are called in the event loop processing function WIN_WindowProc in response to the mouse events dispatched by Windows. ) SDL_HINT_MOUSE_RELATIVE_SYSTEM_SCALE. In this tutorial we'll make a bunch of buttons we can interact with. Description. h index 4683e2597d4 The X/Y coordinates of the mouse xrel, yrel Relative motion in the X/Y direction DESCRIPTION. SDL3/SDL_SetRelativeMouseMode. For example, if player pressed left arrow, but moved his mouse over a window before, he will have to wait enough frames for mouse events to get processed. The application considers the left button as released and stops the slider, disables relative mouse mode Jul 26, 2021 · The SDL_MOUSE_RELATIVE_SCALING hint is also now supported for OpenGL scaling, again to match the SDL_Render path. Nov 20, 2024 · Learn how to detect and handle mouse input events in SDL, including mouse motion, button clicks, and window entry/exit. . ddqqjkri wwilph wmnsc qctyr tezywl ntnbp pimztv fkgi znv hhsxd