Operating system for mobile devices. For non-developer questions, see http://android.stackexchange.com

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0
votes
1answer
177 views

How do I implement swipe-to-throw in Andengine?

I have a ball sprite and I apply physics to it when the user swipes on it. I'd like the ball to start moving in the direction of the swipe, similarly to how Paper Toss works. How can I do this?
-2
votes
1answer
117 views

How should I start with Android development? I am basically a PHP HTML JAVASCRIPT developer [closed]

I am a PHP developer wanting to learn Android game programming. I tried java with ADT and android SDK, but I found Java confusing because of its complex Object-Oriented structure. I've heard we can ...
1
vote
1answer
107 views

Android Object get Jagged at the border

I am new to OpenGL ES 1 in android. My 3D Model border getting Jagged. Please help me to look like a smooth border instead of jagged. Screenshot : http://i.stack.imgur.com/1Gq83.png private class ...
0
votes
1answer
93 views

Making a sprite jump at a particular angle android

I am making a game in android Java, and I am kind of new in game programming. Please help me out. I have a sprite that is moving horizontally across the screen. I want him to jump when the use ...
0
votes
0answers
66 views

How can I know when a scene is fully-created in Andengine?

I am using a scene manager like this. How can I know if a scene is fully created and visible on the screen, as it seems that the GameScene listens for touch events while the loading scene is still ...
1
vote
1answer
495 views

How do I dispose of OpenGL resources cleanly on Android?

I am creating a framework for OpenGL ES 2.0 for Android. How can I cleanly dispose of my OpenGL resources when my Android app is done? I check for isFinished() in the onPause() event and then dispose ...
0
votes
1answer
68 views

What's the best way to time a character AI movement on android/java?

I'm creating an android game and I'm trying to figure out the best way to time a character position change, something like this: public void move() { //this.posX += 5; this.posY += 5; if ...
0
votes
0answers
16 views

Trying to use Sprite Batching with GL_COLOR_ARRAY in OpenGl ES 1.0/1.1

I'm trying to create a sprite batcher that uses GL10.GL_COLOR_ARRAY using OpenGl ES 1.0/1.1 on Android. I found two different sources that seem like they would work, they both have statements that ...
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votes
0answers
64 views

Make bitmap moviment on android canvas using timer or handler/Runnable/postDelayed

Im trying to to move enemies on a android canvas, i have to update its x and y position every x time (run enemy.move() every x time). I got 2 problems: Currently im implementing my canvas redraw ...
0
votes
1answer
68 views

What image format supports transparency in Android?

I want to show an apple on screen but the image has a white background and it doesn't blend with the background of a tree. Is there any image format in which only the red apple is displayed?
0
votes
1answer
136 views

LibGdx Android Phone Resolution problem

I am using the LibGdx framework and have an issue. Currently, I am creating a game in a resolution of 480 x 320 and using 'GL20' to remove the restriction of that dreaded 'power of two' error. It ...
0
votes
1answer
122 views

How can I delete an enemy's bitmap from a canvas?

I'm learning to create an Android shooter game where I'll have multiple enemies. I must control the position on the screen and be able to delete each of then (via, for example, a die() function). ...
2
votes
1answer
181 views

How to implement a multi-platform Java 2D game engine's graphics?

I'm not sure whether this question should be posted here. I'm trying to make a basic generic game engine in Java. Here's what I have so far. public abstract class Device { public abstract void ...
11
votes
2answers
755 views

How do I create a World Healing Wave effect?

I want to change my dark and depressing background to a happy grassy background, in real-time, such that the happy background is shown in a radius around a game character. A forcefield of happiness, ...
1
vote
2answers
2k views

LibGdx drawing weird behaviour

I am finding strange behaviour while rendering TextureRegions in my game, only when pausing it. I am making a game for Android, in Java with LibGdx. When I comment out the line "drawLevelPaused()" ...
2
votes
2answers
137 views

How do I create a horizontally centered “gravity line”?

Here's my ideal scenario: A game object (in blue) can change its horizontal velocity, but it will be pulled back by gravity (dotted gray arrows) toward a central vertical line (in red). How can I ...
0
votes
1answer
196 views

Can I programmatically generate textures in java?

Is it possible to programmatically generate textures in Java, textures that could then be used to cover in game objects?
1
vote
1answer
49 views

How to manage screen and input when using libSDL2 for both desktop and Android?

I have worked on libSDL1.2. Since, the release of 2.0, SDL also supports android. So, I am trying to develop game that can work both on desktop and android. But there are few things that are confusing ...
0
votes
2answers
93 views

Recommended way to handle sprite assets for different screen densities (Android)

I am currently working on a 2D game for Android. All of the images that I render were created as SVG's and then exported to PNG's which I have placed in my assets directory. These images are also all ...
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vote
0answers
125 views

Consequences of running a Unity APK on Intel processor driven Android devices?

As more Android device manufacturers will be implementing Intel processors in the future, this question might be interesting for everyone who wants their Unity games to run on these devices. I ...
0
votes
0answers
32 views

Memory Management on Physic Body Frames in Unity

Compared from the Android programming with the help of LibGDX and Eclipse programming software in making 2D physics based game from this previous question, what if I'm throwing lots of game objects ...
0
votes
1answer
65 views

“Quad” background showing on OpenGl ES 1.0/1.1 Sprites

I modeled my sprite drawing on Grid.java and GLSprite.java from SpriteMethodTest, using 2D OpenGl ES 1.0/1.1 on Android, but the "quad" sprite background shows when two sprites overlap each other. ...
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0answers
66 views

How do I “reset” the color in OpenGl ES 1.0/1.1?

In my 2D game I use glColor4f() to set the color and draw my screen border rectangles but when I try to start drawing my game objects, made up of a texture on a rectangular "quad", using ...
1
vote
1answer
183 views

How can I get my Flash game to scale to all mobile device screen sizes?

I want my application to automatically scale its size depending on the screen size. I want my application to fit any screen size automatically. I am making my application for mobile devices, how can I ...
1
vote
1answer
489 views

Using AdMob with Games that use Open GLES

Can anyone help me integrating Admob to my game. I've used the badlogic framework by MarioZencher ... and My game is like the SuperJumper. I am unable to use AdMob after a lot of my attempts. I am new ...
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votes
3answers
4k views

What language was used to make Jetpack Joyride? [closed]

As I'm interested in creating games like Jetpack Joyride for mobile devices and so on, I wanted to know what technology was used to create the game. Was it made in Objective-C, Java, Flash or HTML5 ...
1
vote
0answers
87 views

LibGDX polygon caching

I am developing an Android game using LibGDX and I have big world map made of polygons. I use PolygonSprite and PolygonSpriteBatch, when I render map, I get 30-35fps and it feels laggy. I wonder if ...
1
vote
2answers
552 views

Multiplayer game sdk for ios and android [closed]

I am working on a multiplayer game supporting Android and IOS. For IOS Game-Center seems promising. But its IOS only. OpenFeint could be a option, but now GREE has stopped supporting it. Is there ...
2
votes
2answers
762 views

Reloading Resources on Resume

I'm having a problem with my game. If I press the "Home button" the game is paused... everythings fine, but if I then go back to the game all the resources are reloaded before I can continue the game. ...
7
votes
4answers
312 views

Why does my game display the wrong “required Android version” on Google Play?

I'm porting a Unity game to Android, and I've set up the "Minimum API Level" in the Player settings to "2.3.3 (API level 10)". However, on the store, it says "Requires Android: 1.6 and up". On the ...
0
votes
1answer
102 views

Game states vs calling new activities

I am trying to decide what the best method is to call "level complete-screen" and "game over-screen" in my real-time android 2d game. Currently I am using game-states and only updating my game when ...
0
votes
2answers
83 views

How do I show a Quit button on Desktop but don't show it on Android with libgdx?

So I would like to display a Quit button on the Desktop main menu screen, but I wouldn't want to have it on Android too. What is the correct approach to achieve this? Do I have to check the ...
-1
votes
1answer
95 views

How to swap the position of two sprites? [closed]

I'm making a game like Candy Crush with Cocos2D in Android. I've made the sprites but I want to swap to sprites by touch . How to swap the position of two sprites?
4
votes
2answers
148 views

Use large image individually, or in TextureAtlas?

Does it make any sense to include a large image (with dimensions of say 1920x1080) in a TextureAtlas and then use it with libgdx for example? Or should I rather use it individually and include the ...
0
votes
2answers
157 views

AndEngine - Smooth scaling on a sprite

I'm trying to implement a pinch zoom on a sprite. I would like to get an effect like the SmoothCamera, but on a single sprite. I've managed to pinch zoom on the sprite by changing its scale, but the ...
1
vote
1answer
126 views

How many leaderboards can I have in Android via Google Play?

Question is simple. I have one game with multiple levels(say around 90) distributed amongts different amongst different worlds. Am I reading this right and it means I can only have 70 individual ...
0
votes
1answer
207 views

Android local multiplayer

I am working on a FPS game for Android and I want to make a support for local multiplayer with no additional devices or server required. One of the player's devices would serve as a server, getting ...
0
votes
1answer
219 views

Drawing UI using density pixels

I have a question about proper ways to draw UI, since I've learned what I know from the internet and by experimenting I often dont code the "proper" way, instead I do it my own way, not knowing if it ...
0
votes
2answers
217 views

translating canvas for rotating sprites that shoot

I am trying to align bullets to my different sprites guns (top down 2D for android). Right now Im using this method to draw my bullets: public void draw(Canvas canvas){ update(); ...
0
votes
0answers
28 views

PolygonRegion creating anr

I'm try create mask for cut texture. User moving finger on the screen and when he will up finger mask will created. My problem in, after user has long time moved on screen and up finger, mask start ...
1
vote
1answer
1k views

LibGDX Drawing sprites when moving orthographic camera

I've been having this problem for a long time and I just can't seem to find the exact problem. I have a game where the map is 480x1600 and my camera has a view of 480x800. I have a button that when ...
2
votes
1answer
307 views

Recording and playing back sounds with LibGDX

How do I record a sound to PCM format and replay it from there?
0
votes
1answer
154 views

libgdx game process dies on loading texture atlases

I try to load a lot of texture atlases (10) with approximately 5 (~2048x~2048)(not using PoT) .pngs each. I'm using AssetManager and there is no trouble with it on my pc but when I try it on my tablet ...
0
votes
0answers
54 views

DigitalOnScreenControl not showing on screen using AndEngine Anchor Center

i'm following tutorials and i wanted to add a knob controller on the screen, but it's not showing up, can you help me please? This is the createControls() method in GameScene: private void ...
0
votes
0answers
240 views

How to rotate just the object being touched in Unity?

For my first steps in Unity I am just trying to rotate some squares when I touch them. using UnityEngine; using System.Collections; public class testskript2 : MonoBehaviour { // Use this for ...
1
vote
1answer
149 views

AndEngine Font Issue

I am learning AndEngine. I am displaying Hello world using this code: public class myactivity extends SimpleBaseGameActivity { private final int CAMERA_WIDTH = 320; private final int CAMERA_HEIGHT ...
0
votes
1answer
99 views

Alpha Value at 0 Shows Black for Android Canvas Bitmap

There have been a few questions similar to this but none seem to give a straight answer. If I am creating a Bitmap from a .png image and want to set a color (i.e. true pink) to transparent, the color ...
0
votes
1answer
404 views

How can I save an XML file with Unity on the Android platform?

I am writing a game that has a save function which looks like this public void Save() { System.Xml.Serialization.XmlSerializer ser = new ...
0
votes
1answer
174 views

Framerate and game loop on mobile

I'm searching how to manage game framerate on mobiles devices, here is my problem: On a computer with got something like that: void main() { while(game.isRunning()) { ...
0
votes
0answers
396 views

Dragging an object by touching on Android

I am trying to move and object by touching it and dragging. I am testing it on my Samsung Galaxy SIII. I have used the following code. For some reason it moves faster than my finger. It should always ...