libgdx

问题 It is possible to detect when a body is under light? ( Collision with the light and a body ) How I check this with libgdx? Sorry for my english... 回答1: It could be easy to implements with raycasting : With a point light, you have to perform a raycast from your body object to the light object, if the first returned body is the light then your object is under light. With a directional (infinite) light you have to raycast from your object body toward light direction opposite, if raycast not

问题 Code There is my code for my Screen object. The garble of arrays and Vector2 s at the bottom is just a long list of models for the cats. My goal is to make a port of http://catsinspace.co.nf, my website, to learn how to use libgdx and its box2d port. I am trying to get the mousejoint working, but I apparently don't understand how a groundBody is supposed to work, despite my hours of googling. Here is my strange, cryptic error that I have tried googling fruitlessly: AL lib: alc_cleanup: 1

问题 How can i draw a circle with a smooth border on a pixmap? The normal "sample" parameter in the config doesn't affect a pixmap. EDIT: Pixmap ds = new Pixmap(width,height, Pixmap.Format.RGBA8888); ds.setColor(color); ds.fillCircle(ds.getWidth()/2, ds.getWidth()/2, (ds.getWidth()-20)/2); texture = new Texture(ds); ds.dispose(); The circle has a 200px radius. A normal circle-shape created with the shaperenderer produces a perfectly smooth circle... 回答1: The problem you have with the pixmap circle

问题 I'm trying to launch an Intent from the render method in libgdx but I am getting a "Can't create handler inside thread that has not called Looper.prepare()" error. I have implemented the Interface from here http://code.google.com/p/libgdx-users/wiki/IntegratingAndroidNativeUiElements3TierProjectSetup I have used the Toast implementaion and that works okay. This is my Android implementation @Override public void launchPlayerRoom() { Intent intent = new Intent(appContext, RoomViewActivity.class

问题 I decided to move my application from Android to iOS. Application use libgdx library. I generated ios subproject using libgdx and opened it using Xamarin Studio. All images are linked from my-project-android/assets/data. All images have set build Action > content. Now every time when run project from xamarin studio i get GdxRuntimeException Coldn't load file: data/background.png. This file is the first image which i load in my application. All operation i have done on my mac both with

问题 I'm making a game in LibGDX and I have a couple of menu screens using the scene2d ui. I have one MenuBaseScreen super class that sets up the default actors required for each screen. Then i have a MainMenu, Options etc screens that each inherit from MenuBaseScreen. In each of the screens there is a parallax background that keeps going from right to left. This parallax background gets instantiated in the MenuBaseScreen. Now the problem with this is that each time I switch screen there is a

问题 I have every audio in my asset folder, they are .ogg and I load them by the asset manager, but sometimes that I install the apk on my android, it throws me an error message: E/ExtMediaPlayer-JNI: env->IsInstanceOf fails E/MediaPlayer-JNI: JNIMediaPlayerFactory: bIsQCMediaPlayerPresent 0 E/ExtMediaPlayer-JNI: env->IsInstanceOf fails E/MediaPlayer-JNI: JNIMediaPlayerFactory: bIsQCMediaPlayerPresent 0 D/MediaPlayer: setSubtitleAnchor in MediaPlayer D/MediaPlayer: setSubtitleAnchor in MediaPlayer

问题 When working with creating games in Libgdx, I have not been using the physics engine as I dont have too many moving parts in the game. So, to have objects fall from the top of the screen to the bottom, I used what the documentation had, something like this: projectile.y -= 200 * Gdx.graphics.getDeltaTime(); That example will make said projectile go down at 200 pixels per second (I believe). What I am trying to do is make it so after two seconds, the projectile will transition from negative

问题 Hello fellow Programmers, I’m having trouble building my libgdx Game for Android with freetype font dependencies. Libgdx version: 1.9.8 Gradle version: 3.2.0 Android Studio version: 3.1.4 Even without any dependencies for freetype font declared in the root build.gradle file and cleaning of the project I get the following Error when trying to build for Android: Execution failed for task ':android:transformResourcesWithMergeJavaResForDebug'. More than one file was found with OS independent path

问题 I'm currently creating an inventory system, in which the user will select an item from a list and the icon on the right will update based on the item that the user has picked. I need a way to get the list item that the user has currently selected. I then need to use that list item to display an icon which the user will see. Currently I have tried using the getSelected() method on the inventory list, which seems to be only returning the first item in the list. I need a way to get the item that