The game I'm designing currently requires a first person controller and luckily Three.js offers that class as well.
However I can't stop the camera from flying around. I know that the mouse movement causes the fly because it happens as soon as I move the mouse. But reading the js code,I cant find the attribue which causes this movement. Here is how I initiate the controls:
controls = new THREE.FirstPersonControls(camera);
controls.movementSpeed = 0.1;
controls.lookSpeed = 0.001;
controls.lookVertical = true;
I do not want the view direction to change when I am not moving the mouse.
any idea ?
Keep in mind that the FPS style mouse movement in webGL is usable rather only in a full screen mode. If an application runs in a standard windowed mode, the cursor is visible, and the application can not detect cursor movements that cross the edge of the window. This makes it impossible to look around in the FPS style (look movement stops when the cursors reaches the window edge).
This is probably the main reason why a PointerLockControls demo asks you to switch to the full screen mode.
With FirstPersonControls the look movement continues when the mouse reaches the edge. Such approach works well in the windowed mode.
You might want to use the PointerLockControls instead
See an example here:
https://github.com/mrdoob/three.js/blob/master/examples/misc_controls_pointerlock.html
Related
What happens is that I initiate the window drag instruction with Neutralino.window.setDraggableRegion, it works but there is a very big problem in rendering.
I am on a windows system. Here is a video of the problem:
Video of the problem
As you specified, the window is dragging but the mouse doesn't move with the point you click on, instead the mouse is at a different position.
I Looked at how draggable region function works under the hood, and it's handled by the JavaScript Client File, by setting the window position to the amount of mouse has moved on x and y.
since the mouse pointer doesn't move instead the window moves relative to the position from where you started clicking.
I will raise this issue, and soon a fix for this will be out!
Issue has been raised
I have a program using glfw for window management and opengl for rendering. The program works on Windows and linux, and eventually Mac OSX so I want any solution to be portable.
glfw seems to either support a cursor, or getting full mouse input but not both. For example, with the cursor enabled (default) the glfwscroll_callback does nothing. If I disable the cursor, then scrolling the mouse is captured but then the user cannot see where the mouse pointer is. That's ok if I can draw the cursor myself when I want but I cannot find any function to drawcursor at a particular location.
How does the cursor work, ie what is the hardware basis for the cursor? Is there a sprite in hardware still? If it's all in software, I suppose we could draw a cursor at the current mouse location the last thing in render. But that's not convenient. For one thing if the scene hasn't changed, I shut down rendering completely to reduce power.
Is there any way to manually draw a cursor on top of the current screen so that we don't have to manage the buffers manually? Is my only option to change the logic and not render the scene if nothing has changed, but to manually draw a cursor on top of the current scene every frame?
I created a bouncing ball game in scratch for CS50 PSET0.
The game works well as I expected, except for the following bug/errors:
The game can be paused by pressing the UP Arrow key on the keyboard, even BEFORE it is started or AFTER the game is over. THIS SHOULD ONLY WORK WHEN A LEVEL HAS BEEN SELECTED AND GAME STARTED AND NOT BEFORE OR AFTER IT IS STARTED. [WORKING ON IT]
I set the Paddle dragmode to not draggable, yet it's not working as you can still drag the paddle using the mouse. [SOLVED]
Falling eggs/bomb won't stop falling when the game is over or paused. [TRYING TO SOLVE IT BROUGHT A NEW BUG] One egg appears at the bottom of the screen after I paused and resume the game. I'm not sure how to hide that one stubborn egg.
On hitting the paddle or edge, the ball bouncing isn't very smooth and natural. It sometimes lag. [WORKING ON IT]
JUST CURIOUS: Why is the code "when I receive Setting btn Clicked" not working on the sound and music button sprite? [SOLVED]
I will appreciate all your kind suggestions.
Here's my project
NB: if the question seems unclear and you tend to understand it. Kindly feel free to suggest an edit. Thanks.
For point 1, you could test with an if statement whether the game is currently running. (Using the same variable you use to pause the game.)
As for the dragging of the paddle, I can't seem to drag it. That is, I can't drag it when I am playing, but I can when in the editor. This is always the case, you can drag any sprite around while editing, but not when playing without the editor open. This is the default behaviour of sprites as well, you do not have to declare it each time. A reason for you to want to drag sprites is when you use the Pen Extension to create a drawing program.
To stop the eggs from falling, you could pause the clones the same way you pause the ball when moving.
To let the ball turn more smoothly you could let it turn between an angle from -90° to 90° opposite to the surface it hits. To implement this would be quite difficult with a single line. You could, if you don't mind it hitting the edge instead of the border you built, split it so you include the built-in block: if on edge, bounce. The if-statement would then only include the touching of the paddle (and maybe the danger bar). In this statement, you would select an angle between -90 and 90 degrees.
For 5, there must've gone something wrong when you wanted to design this, the when I receive [setting btn clicked v] block is just not connected. :)
I'a currently working on a small utility, it's my first ever X project. The utility is used to draw a small circle around your mouse pointer. I use an app called Pinpoint to do the same on my Mac, it helps me find my mouse as I'm visually impaired.
The utility creates an transparent X window and draw a circle inside, it then moves that window with the mouse pointer so that the circle follows the mouse.
It currently works, except for one detail. Mouse events are not propagated up to the underlying windows. Basically, the utility makes the mouse useless.
As far as I can tell from the Xlib docs, if not otherwise specified, new windows should propagate all events. How can I fix this?
The code can be found on GitHub: https://github.com/blubber/circle-cursor it's a bit messy currently, becaue it is just a proof of concept.
I would suggest doing via cursor image as well, there are many ways when you won't be able to receive mouse events and only possible source would be polling with XQueryPointer.
With xfixes extension you can subscribe to all cursor image changed events and get most recent shape of the cursor, and whit XRender you can set your own ( possibly animated cursor )
I want to write applications (or use existing ones, that would be even more convenient) that behave like a hardware screens OSD (on screen display), only without input.
That is: A graphical output (e.g. from a GUI toolkit like Qt or Gtk) is placed on a layer where it is above even fullscreen-windows like Firefox F11 mode or a video player in fullscreen mode. That includes "above" the mouse cursor as well, so technically and graphically the mouse cursor would move below this widget.
I don't know about real fullscreen applications with SDL or OpenGL though, but this is not the requirement. If you know this as well please include it in your answer.
Real world applications are read-only overlays like a little webcam window, a TV-station like logo or premade annotations. So all in all this is meant for live presentations, streaming and recording of screencasts and tutorials with minimal post processing.
My own hacked, unsuccesful, experiments showed at least that removing this window from the WM control ( I did this by choosing a GTK popup dialog instead of a real main window) lets you position in absolute coordinates and it will ignore things like virtual desktops and workspaces, which is good, so you can switch between those and the overlay/HUD will stay in place.
Of course this cannot be done in software with the same Z-value (top/bottom windows) as the hardware screen. So technically I am talking above all other windows but below the screensaver or lock-screen layer.
+1 internet for linking to docs and giving the right keywords.
+2 internet for a working code example, language, gui-toolkit etc. doesn't matter.
You probably need composite overlay window from Composite extension - see section 3.2 "Composite Overlay Window" extension docs. (cursor is above this window)
Version 0.3 of the protocol adds the Composite Overlay Window, which
provides compositing managers with a surface on which to draw without
interference. This window is always above normal windows and is always
below the screen saver window. It is an InputOutput window whose width
and height are the screen dimensions. Its visual is the root visual
and its border width is zero. Attempts to redirect it using the
composite extension are ignored. This window does not appear in the
reply of the QueryTree request. It is also an override redirect
window. These last two features make it invisible to window managers
and other X11 clients. The only way to access the XID of this window
is via the CompositeGetOverlayWindow request. Initially, the Composite
Overlay Window is unmapped.
Example using node-x11:
var x11 = require('x11');
x11.createClient(function(err, display) {
var X = display.client;
var root = display.screen[0].root;
X.require('composite', function(err, Composite) {
Composite.GetOverlayWindow(root, function(err, overlay) {
// already automatically mapped here:
//
// CompositeGetOverlayWindow returns the XID of the Composite Overlay
// Window. If the window has not yet been mapped, it is mapped by this
// request. When all clients who have called this request have terminated
// their X11 connections the window is unmapped.
});
});
});