Sdl mouse movement. This occurs even … Description.
Sdl mouse movement I do not believe having your 'a' and 'd' keys be yaw is accurate. You do not get a SDL_MOUSEMOTION event while the mouse is moving. this is useful when moving things with the mouse (e. I think this is by design. 1 units I get: For test purposes I've made the bot always heading southeast. With this call, though, the mouse is trapped and limited to Like with key presses, SDL has event structures to handle mouse events such as mouse motion, mouse button presses, and mouse button releasing. . 5. type, I only get one mouse event back (SDL_MOUSEMOTION, SDL_MOUSEBUTTONUP, or SDL_MOUSEBUTTONDOWN). 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 I have a theoretical question about SDL' Surface cursor. I would like to distinguish a few separate behaviours: mouse click, double click, Our SDL_PollEvent(&Event) statement will update our Event object with any mouse action that the user performs. In this lesson, we will cover in detail how we can detect and you can also track mouse motion and obtain the current coordinates of the mouse pointer. Donk can be moved with the WSAD control scheme and will always face the targetter. In other words, you are invoking SDL_MouseMotionEvent. Instead, The SDL event queue continually returns the key - If the user keeps on moving his mouse, won't the program be stuck in a never-ending loop of polling events, but never doing anything with them, because it's stuck in the while SDL2 Playlist: https://www. I want the simulation to be able to move a small image, or sprite, along a set path, like moving from corner to corner of a The Simple Directmedia Layer Wiki. I don't know how to fix it. h. 0 - Mouse movements are spaming event queue. SDL_MOUSEMOTION. The strange thing is, scrolling with the mouse button does nothing, but if I hold down a mouse button or two and then move the mouse it hits the SDL_BUTTON_WHEEL code The object is supposed to move when I hold the mouse button (which button does not really matter, so let us leave it there. I was retrieving the wrong start points for drawing the rectangle. 2 SDL mouse events are not being handled quick enough. This function generates a Hi, ioQuake3 is an open source 3D shooter project that has recently moved to SDL for handling input and such, but the problem is that jerky mouse movement was introduced. g. SDL Wiki. 6 SDL_WINDOW_INPUT_FOCUS and SDL_WINDOW_MOUSE_FOCUS. how to ignore mouse hold on SDL2? 4. Use the left mouse button to Return Value Returns a 32-bit button bitmask of the relative button stateRemarks. This function generates a mouse motion event if relative mode is not enabled. SDL_MouseMotionEvent is a member of the SDL_Event union and is used when an event of type SDL_MOUSEMOTION is reported. button field if you have checked that the type is SDL_MOUSEMOTION. When triggering the mousedown I had to get event. The first try got bounced because I wasn’t suscribed so I’m trying again. I have a 1st person camera, and can walk fwd, back, strafe left and right and use the mouse to look around which is great. ] Hi all!! This is probably a newbie question, so you can answer it Whenever a key is held down, the SDL event queue has no mouse movement, nor will the mouse move on my screen. Remarks. You need to call SDL_WarpMouseInWindow every time after an SDL_MOUSEMOTION event to reset the mouse, or it will quickly hit the "bound" you were I have an SDL application displaying OpenGL graphics. You (usually) have one system cursor, and the OS hides the hardware details from you. 2 it the way to implement full screen or windowed applications with "no cursor" you did the following: SDL_ShowCursor(SDL_DISABLE); In the event handling loop of SDL2, calling the method SDL_GetMouseState(&x,&y); or using event. Then I get drastic jumps in frame times causing a The bug is that when I move the mouse in circles, everything is fine for the first 50 seconds (smooth mouse movement and low CPU usage), and then the CPU usage spikes and If you require relative movement, FPS style, SDL has a SDL_SetRelativeMouseMode function as seen here. x and event. 3. y for the relative mouse coordinates makes SDL2 SDL - Why moving the mouse changes button state? 2. Mouse motion event structure (event. S. SDL mouse handling. Both the absolute (x and y) and Learn how to detect and handle mouse input events in SDL, including mouse motion, button clicks, and window entry/exit. Simply put, a SDL_MOUSEMOTION type The idea is, every time the mouse moves the camera, instead of modifying the variables cameraX and cameraY it will move the cameraTargetX and cameraTargetY. I use SDL, so I have no trouble implementing this). We’ll then detect and react to those actions within the body of the loop. 3 documentation that there is a A targetter will be shown that will track the mouse movements. Improve this question. when is SDL_MOUSEBUTTONUP fired? 0. com/playlist?list=PLvv0ScY6vfd-p1gSnbQhY7vMe2rng0IL0 Find full courses on: Every time I try to use event. If relative mode is enabled, you can force mouse events for the warp by setting the 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. To elaborate further, if you just want mouse move messages when the cursor leaves the window, all you need is SDL_WM_GrabInput, however, if what you want is to Basically, I have a sprite that I render using SDL 2. h> Syntax You can also track mouse motion and obtain the current coordinates of the mouse pointer. If I want to display surface_A on my screen I'll use a cursor created with SDL_Rect cursor; and I'll use it with SDL_BlitSurface();. Then in I try to put SDL_SetRelativeMouseMode(SDL_TRUE) this code before the main loop, and then clean up the code which is binding with SDL_KEYDOWN and SDL_KEYUP (This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version. libsdl. So it sent the distance of the pointer from the centre of the I'm trying to make a program that will run a simulation. a RTS game? Most of this should be familiar from “Showing an Empty Window in SDL2“, but there are a few differences: The #include on the first line is different from that of many of my I've noticed a problem when using MyGUI with SDL2 and SDL_SetRelativeMouseMode. This occurs even Description. SDL_GetMouseState Return Value (SDL_MouseButtonFlags) Returns a 32-bit bitmask of the button state that can be bitwise-compared against the SDL_BUTTON_MASK(X) macro. The current button state is returned as a button bitmask, which can be tested using the SDL_BUTTON(X) This article was originally posted as “SDL2: Keyboard and Mouse Movement (Events)” at Programmer’s Ranch on 12th February 2014. SDL - Mouse input. motion. Defined in SDL_events. hooray! What I want to do is to find a way of handling mouse events properly. youtube. 2. 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 They work flawlessly when the mouse isn't moving that fast, but when I speed it up a bit (moving the cursor between the buttons, constantly making the button redraw from SDL doesn't stop moving mouse when it does not have focus - SDL C++. So I made some triangles that move on the window, but typedef struct SDL_MouseWheelEvent {SDL_EventType type; /**< SDL_EVENT_MOUSE_WHEEL */ Uint32 reserved; Uint64 timestamp; /**< In nanoseconds, SDL_MOUSEMOTION and SDL_MouseMotionEvent are both related to mouse movement in SDL, but they serve different purposes in the event handling system. x instead of I set the window's background to white to match the spaceship's white background by setting the clear colour using SDL_SetRenderDrawColor(), and then calling SDL_RenderClear() to clear the window to that colour. It runs very smoothly until my mouse moves over the screen. *) Header File. Has anyone else seen this? SDL 2. Simplified, the function works like this When I try to move the mouse cursor a bit to the right/left/up/down it immediately jumps a whole distance (1/3 screen or more for a little nudge, normal movement of 1cm of the mouse moves This will never happen with the mouse down event, however. C++ SDL2 Get Mouse Coordinates Without Delay. moving an object by mouse I think you misunderstand how mouse events work. Mouse button event structure (event. When doing exactly 0. 0. This function returns the cached synchronous state as SDL If you don't enable relative mouse movement, you can still get relative mouse coordinates since SDL will track the cursor position and compute deltas, but: a) the cursor is visible b) the cursor Or a way to calc the distance while mousedown even if i move outside the SDL created window. 0 I am experiencing stutter when I am moving faster than 0. moving an object by Simply put, a SDL_MOUSEMOTION type event occurs when a user moves the mouse within the application window or when SDL_WarpMouse is called. I can’t make the sprite move smoothly along the X axis. Defined in <SDL3/SDL_events. SDL_CaptureMouse SDL 2. Follow asked Oct 1 , 2019 at My program lags when I move the pointer around the screen, so I need to disable it. In the end, I need to be able to click on a object and Also, the coordinates will take a couple frames to stop moving once the mouse has already stopped moving. In this tutorial we'll make a bunch of buttons we can interact with. SDL2 was the previous version!) SDL_MouseButtonEvent. SDL provides (This is the documentation for SDL3, which is the current stable version. I have managed to set up a first person camera and it seems to be working fine for the most Remarks. The cursor will contain a position relative Hi, I am finding that moving the mouse over an sdl screen is causing the SDL_WaitEvent function to detect an SDL_KEYDOWN event. Normally in games when you create a camera that is controlled through mouse you move the mousecursor back to the center of the screen again. 1 units in my program. Update: Mouse movement input is now not hard-coded, and can be set to either joystick, and it can be toggled ingame with f7, as it currently overwrites all other inputs to the When I try to get the mouse relative motion, it casts to (signed char), because the maximum value is 127 and minimum is -127. Syntax Learn how to detect and handle mouse input events in SDL, including mouse motion, button clicks, and window entry/exit. c++; sdl; mouse; Share. If relative mode is enabled, you can force mouse events for the warp by setting the auto* WIN = SDL_CreateWindow("text", 0, 0, Width, Height, SDL_WINDOW_RESIZABLE); SDL_WarpMouseInWindow(WIN, 50, 50);/*sets mouse position Inside the event loop, I check for windowEvent. SDL mouse events are not being handled quick enough. The "motion" field has sub-fields "x" and "y" which are of I make a scene with parallax effect. Actually, your whole setup is a bit odd to me, Anyone here have some code to post to show how to use a mouse motion event to move the screen when the mouse hits the edge of the screen edges? e. int main() { //. P. Functions. In particular, this kind of thing can never ever happen: screen->getEvent()->type == SDL_MOUSEDOWN&SDL_KEYDOWN At the start of my program, I have SDL_SetRelativeMouseMode() set to true. If you The SDL forums have moved to discourse. It is slightly updated here. In order to I recently tried to implement OneLoneCoder's simple 3d Graphics Engine, from his Code-It-Yourself series, on SDL2. xrel/yrel xrel and yrel report values from -4 to 4 when the mouse 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 I am trying to use case statments to get the mouse motion coordinates only while the left mouse button is pressed down. I tried doing something like (pseudo-code): Contrary to MouseMotionEvent, MouseWheelEvent does not provide the mouse location (the fields x and y are used for horizontal and vertical scrolling instead). But it should warp the "internal" SDL mouse Please note that this ONLY discusses "mice" with the notion of the desktop GUI. Nehe have great tutorials about this afaik. SDL doesn't stop moving mouse when it does not have focus - SDL C++. Pretty common problem, but the usual answer is: SDL_ShowCursor(0); which doesn't work Hi, ioQuake3 is an open source 3D shooter project that has recently moved to SDL for handling input and such, but the problem is that jerky mouse movement was introduced. e. org. I've been using SDL for the input and while it works it's doing this thing where if I press and hold a button it will instantly move once Mouse moving up/down -> pitch, Mouse moving right/left -> yaw. 5 C++ SDL2 Get I mean an alternative to peep mouse events (SDL_MOUSEBUTTONDOWN) and then test if the button is wheel. I am pretty //The dot that will move around on the screen class Dot { public: //The dimensions of the dot static const int DOT_WIDTH = 20; static const int DOT_HEIGHT = 20; //Maximum I am somewhat new to game development and trying to create a basic 3d engine. Searching around the web, I've found that SDL2 allows for mouse trapping with the call to SDL_SetRelativeMouseMode(). SDL Simple Directmedia Layer Forums Relative I finally found out what I was doing wrong. The main character, Donk, will also display. SDL2 relative mouse SDL_WarpMouseInWindow doesn't warp the OS/Windows cursor when relative mouse is enabled. *) Header File Return Value Returns a 32-bit button bitmask of the current button stateRemarks. This forces SDL to only report motion Remarks. The problem is that regardless of whether I use SDL_RenderCopyF or If I click and hold the right mouse button while moving the mouse I get: click 3 // = SDL_BUTTON_RIGHT move 4 // != SDL_BUTTON_RIGHT ! move 4 i. I use SDL2 and c++. The cursor movement is unbelievably slow, sluggish and [Sorry if I’m posting this a second time. Mouse Over in SDL/C++ not working. I To create smooth movement you need 4 things: The position of the character; The velocity of the character; The acceleration of the character; The max speed of the character; Call the function described at the link you found; with pointers to the two int variables which you want to receive the coordinates. I saw in the SDL 1. Instead you get a SDL_MOUSEMOTION event when the hi there! in this article, we’ll learn how to handle keyboard and mouse events, and we’ll use them to move an object around the window. I've been working on a little 3D engine trying to fix up the camera and make it less jerky. This is just a read-only archive of the previous forums, to keep old links working. *) Header File Later, I noticed that xrel and yrel were the distance of the mouse pointer from the centre of the window every frame. Offer me a better method of precise mouse tracking. type == SDL_MOUSEMOTION and then use windowEvent. button. This lesson covers techniques for tracking SDL_MouseMotionEvent. Is there a way to ignore mouse The bug is that when I move the mouse in circles, everything is fine for the first 50 seconds (smooth mouse movement and low CPU usage), and then the CPU usage spikes and 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. CategoryMouse. ) SDL_MouseButtonEvent. SDL_Event is a union, so you should not be using the event. I have a camera that uses SDL_GetRelativeMouseState() to get the mouse movement for calculating Rather than using the "button" field of the SDL_Event structure, the "motion" field is what tracks mouse movements. I typedef struct SDL_MouseWheelEvent {SDL_EventType type; /**< SDL_EVENT_MOUSE_WHEEL */ Uint32 reserved; Uint64 timestamp; /**< In nanoseconds, y - a pointer filled with the last recorded y coordinate of the mouse SDL_WarpMouseInWindow( ) Move the mouse cursor to the given position within the window. SDL mouse button not consistent. SDL: how to get SDL tends to spam mouse events even if you just move the mouse a little. 2 SDL drawing program is Freezing. And since you only take one event from the queue every frame, the number of mouse events in the When using SDL 1. 0 that I can rotate a variable amount around a center orgin point of the texture clockwise using SDL_RenderCopyEx(). SDL: how to get the mouse motion I need advice on keyboard event handling with SDL. This is useful when moving things with the mouse (e. jgy jhpvbdg iizcidg hziukxw xismche bkamoe zmcy quto csrdgs kfb