Android is an operating system for mobile devices. For non-developer questions, see http://android.stackexchange.com

learn more… | top users | synonyms

0
votes
1answer
829 views

LibGdx efficient data saving/loading?

Currently, my LibGDX game consists of a 512 x 512 map of Tiles and entities such as players and monsters. I am wondering how to efficiently save and load the data of my levels. At the moment I am ...
1
vote
0answers
116 views

Android: Hardware Scaler

I was reading through this: using-hardware-scaler-for-performance and am a little confused by it. It says all you need to do to invoke the scaler is to set it like so: surfaceView = new ...
0
votes
0answers
228 views

SurfaceView.Callback.surfaceDestroyed is called too early in Android

I'm making a simple animation application. Everything works as planned, except one little detail: About 50% of the time, exiting the application (Home or Lock button), makes the Logic throw a ...
1
vote
3answers
369 views

Interpolation using a sprite's previous frame and current frame

Overview I'm currently using a method which has been pointed out to me is extrapolation rather than interolation. As a result, I'm also now looking into the possibility of using another method which ...
0
votes
1answer
136 views

Which texture do I bind to when implementing multi-texturing?

I have been having some issues getting multi-texturing to work using OpenGL ES 1.1. I have two PKMs - one with RGB's and one for alphas and I am trying to combine the two as below: int ...
10
votes
2answers
366 views

Extrapolation breaks collision detection

Before applying extrapolation to my sprite's movement, my collision worked perfectly. However, after applying extrapolation to my sprite's movement (to smooth things out), the collision no longer ...
1
vote
2answers
336 views

Cover Screen with Snowing Effect in Libgdx

Oddly enough I cant find clear instructions on this theme (I only found rain and the method is very particular) so I ask, how do I implement a whole-screen snow-falling effect? The methods i can ...
0
votes
0answers
103 views

Drawing and scrolling paths performance problem

Hi I'm doing and endless sidescroller game where the terrain looks like a tunnel which is infinite. I managed to randomly generate the tunnel using this code: protected void createPath(){ path = ...
-1
votes
1answer
287 views

in-app purchase in cocosSd-x 3.0

I am working within a team, and we're at the point of finishing our first cocos2d-x c++ application. We want to add in-app purchases. for what, we made a search for this. We found 2 solutions: 1- ...
2
votes
1answer
555 views

Android LibGDX game: Choosing starting activity

I am making a Android game with LibGDX (using ADT eclipse bundle). How do I choose the default activity to launch when the user opens the app. I set the project up with the LibGDX setup GUI, and I ...
0
votes
1answer
82 views

How to animate two interacting objects

I'm not very familiar with animations but as far as I know, most of the animations are done frame by frame. For example animating a character walking etc. However, let's imagine this scene: There's ...
1
vote
2answers
160 views

In Android, is saving game data in a binary file a good approach?

I am nearly finished with my Android game, but I want to make sure my save format is good. I am working on a fairly large game, so data such as high scores, stars, etc. are stored for around 80 ...
0
votes
0answers
160 views

Limiting Rendering in my game loop (Not Game Updates)

My Gameloop (code below), limits the game updates to 60 ticks per second. However, it renders as fast as the device on which it is being run can handle. I'm using a fixed time step in my game and I ...
0
votes
1answer
125 views

How do I implement multi-texturing using OpenGL ES 1.1 to combine separate RGB and alpha PKMs?

I have been trying to reduce the memory footprint of my textures in a Android game that I wrote without too much success. Based on research that I have done it seems that a good approach is to ...
2
votes
2answers
136 views

how do I create a moving type of block like in Mario[box2d]

I want to create a block which only moves up and only when hit from below. I am trying out a distance joint and I read it can be used as a spring, is this the correct solution? the way I have tried ...
1
vote
1answer
44 views

How to make the images appear in a specific location? [closed]

How can I draw a sprite in a specific location of the screen using native Android 2D graphics API? The image should stay in the location specified.
1
vote
1answer
202 views

Texture compression strategy for Android OpenGL ES that caters for alphas

I have a 2d Android game that is currently causing certain devices to run out of memory. I have a number of PNGs (about 10 MBs in total) that I use in the game at various times. At some points in the ...
11
votes
4answers
1k views

Side scroller terrain generating and scrolling [duplicate]

I am creating a side scroller game for android devices but I encountered a problem. The game looks like this: The black dot is a player. Player's x doesn't change, only the y does. When the player ...
1
vote
0answers
159 views

How can I display an image larger than the screen and allow the user to scroll to see more? [closed]

I am new to development and trying to understand my options. I have found no info or threads on this idea so I was hoping some of you folks could weigh in. When developing for Android, I know that ...
-1
votes
2answers
220 views

How to translate along Z axis in OpenTK

I am playing around with an OpenGL sample application I downloaded for Xamarin-Android. The sample application produces a rotating colored cube I would simply like to edit it so that the rotating cube ...
-1
votes
1answer
63 views

Game slow with older phone [closed]

I've made a game using libgdx. On m'y HTC One X, the game works good, even if there are some lags but only at the beginning. I wanted to try it on an older phone (well a less powerfull phone), a ...
2
votes
3answers
264 views

How do I access a Unity class from an Android Activity?

I have made my own C# classes in Unity. How can I access them from the Android Activity that starts the UnityPlayer? Example: I have a C# class called testClass in Unity: class testClass { ...
2
votes
2answers
237 views

How do I make a puzzle piece move smoothly between locations?

I'm building a 2048 clone to sharpen my Libgdx skills, but I don't know how to ease a tiles between board locations. When I slide my finger, the tile moves rather swiftly. How I can make the movement ...
0
votes
0answers
114 views

Level Select World Map with layers of images for score and completion

I'm working on an android game that will have a "world map" for selecting which level to play. Some examples of other games that implement what I'm trying to do are: Angry Birds, Kingdom Rush, and ...
1
vote
1answer
62 views

How does one go about offering a mobile game, or offering all in-app purchases to backers?

I am planning on trying to get my android game kickstarted. Of course, it's too early in development, and I will wait on until 60% done to do the kickstarter. Some of the rewards I am hoping to give ...
0
votes
0answers
259 views

Android Proguard with Unity3d return error code 1

I am using the proguard 4.11 with the Unity 3d In my project , I have include the unity-classes.jar in my libs folder When I generate the apk , it gives the following exception [2014-05-03 ...
-1
votes
2answers
124 views

How to implement “move to touch location” function?

What is the formula/logic to implement moving an object towards a TOUCHED location. I want character A to move to my finger and it must be accurate. Here is what I have tried so far: @Override ...
0
votes
1answer
1k views

How do I set up Unity for Eclipse?

I want to use Unity on Android. How can I integrate Unity with Eclipse? I searched this site and various forums, but found nothing useful.
20
votes
5answers
6k views

Why is an engine like Unity3D emphasized over a native library like OpenGL for beginners?

I am just a beginner in 3D games, my preferred platform is Android. I posted a question in some other forum about "What to use: OpenGL or Unity3d?" They all emphasized Unity3D and using its built-in ...
0
votes
1answer
199 views

Animations / OpenGL (ES 2) in game menu

(I am specifically asking for Android) If you look at Angry Birds (and in fact many other games), you can already see a lot of animations & effects going in the main menu and in other places even ...
0
votes
1answer
123 views

Game Taking too long during render cycles [closed]

Firstly, I'm not asking anyone to read my code. It is only posted as a reference just in case you want to. I am asking for general tips on how to get my game running at higher FPS on android, for ...
0
votes
1answer
200 views

Parse and iterate over SVG path

I need to parse a SVG path expression like m8,295c-4,-292 441,-291 446,-26c5,265 440,263 442,-9 and have a way of iterating over it in [0 ... 1]. I looked into Apache Batik but it doesn't seem to ...
0
votes
0answers
99 views

What are alternative options for monetizing android games in Google Play Store?

I unfortunately live in a country that is not supported for Merchant accounts on Google Play. I wanted to provide DLC content for a game that I have been working on and I wanted to use Play's in-app ...
0
votes
1answer
78 views

my movement is working good on keyboard but on android its not

So basically here is what my movement is like for keys: key down if (keycode == Keys.LEFT) { mishi.getAcceleration().x = -13; } key up if (keycode == Keys.LEFT) { ...
2
votes
2answers
1k views

android game development using unity 3d [closed]

I want to learn android game development. I dont have any programing knowledge. So should I learn JAVA and eclispe to develop games for android. Or should I learn Unity 3d. And is knowledge of java ...
0
votes
0answers
84 views

Threading in Android OpenGL ES 2.0

Background I've encountered a strange issue when testing my level-select screen. I have 20 levels and display the 'select buttons' for them in 2 rows of 10 (I did this rather than display 4 rows of ...
0
votes
1answer
324 views

Two issues with testing LibGDX on Android

1) When I test my game on desktop it is 100% fine. When I test it on my Nexus 7 physical device, it is the same except the backgrounds have no color. For example my splash screen has a greenish ...
2
votes
1answer
110 views

How to get a Coordinates of a 3D Object in Android

How is it possible to click on an area of a 3D Model (.obj-File) for example a cube, where you can get different Events of the six sides. For Example the orange area of the picture gives me a value of ...
0
votes
0answers
56 views

setChaseEntity freezes or jitters the AnimatedSprite

I'm trying to implement setChaseEntity method in a physics based app. I wrote the below code which has an animated sprite ans as the player. The player is movable and it can jump. When i try to focus ...
0
votes
0answers
119 views

How to play music across several Android activities

to make it simple: I am creating an RPG/MonsterParty styled game, and I really could use the help of laying out the framework of it. I've looked into game-engines, but from scratch seems the best ...
0
votes
1answer
95 views

Player doesn't jumps in Box2D implementation [closed]

Well, i'm trying to learn andEngine. I was able to successfully implement the move functionality for the player. Now, i'm trying to make the player jump using Box2D. I referred few online tutorials to ...
0
votes
0answers
70 views

Gideros Repeating and Clipping Background

I want to have a background with a repeating x-axis, that can be moved horizontally. What I have so far: local background = Texture.new("parallax01.png", true, {wrap = Texture.REPEAT}) local shape = ...
-1
votes
2answers
502 views

Publish android game only for 800 x 480 resolution in portrait mode

I have developed a game in libgdx. I worked for long and after finishing, I found that the game runs perfectly only on devices with resolution 800 × 480. I found this solution: ...
0
votes
2answers
181 views

OpenGL ES 2 jittery camera movement

First of all, I am aware that there's no camera in OpenGL (ES 2), but from my understanding proper manipulation of the projection matrix can simulate the concept of a camera. What I'm trying to do ...
0
votes
1answer
111 views

How can I determine which square in my memory game was pressed?

I want to develop an simple memory game on Android. The memory game have squares like the picture below. How should I determine which of the square is pressed? Should I use image buttons? Personally ...
0
votes
0answers
67 views

Swing and LwjglAWTCanvas

I use LwjglAWTCanvas in my jFrame. I want to load textures on some swing event(I did it from postRunnable in order to get OpenGL contex). final LwjglAWTCanvas hexagonEditorCanvas = new ...
1
vote
0answers
674 views

Resize the Texture Region (parallax background) to fit my screen size in libgdx

I am using libgdx to make a running game. I am using vertical parallax background. I have successfully implemented parallax background many times. But for this game, I want my Texture region to fit my ...
0
votes
1answer
489 views

How to Integrate Unity with Google Play Game Services for iPhone and Android games

I want to integrate Google Play Game Services for Apple's iOS and for Android. How can I do this efficiently?
2
votes
1answer
346 views

Accelerometer based games smoothness

Take Doodle Jump and other games that rely on the accelerometer. The movement of the character is very smooth and I have no idea how they implemented it. I've seen a number of SO/GameDev/forum ...
1
vote
1answer
252 views

Libgdx. Converting Screen Click Coordinates into World Coordinates for 2D Game

I'm using the InputHandler's touchdown method. It gives me my screenX and screenY. Is there a simple way to convert screenX and screenY to world coordinates? By my understanding, InputHandler returns ...