Space Shooter

A vertical scrolling space shooter game for Android and iOS inspired by Sky Force written using LibGDX.

LibGDX is a cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, macOS, Android, iOS, and the browser.

Install Android app

• download and instal the Android apk or
• clone the repo and build from source

Install iOS app

• clone the repo and build from source

There's a bug which is preventing the iOS version from running on the simulator for some XCode versions

Desktop and Web app

• Although libGDX supports compilation into desktop and web app, the Space Shooter project explicitly disables this functionality and targets the mobile platforms exclusively

Requirements

• XCode - for building and running the iOS app

• Android Studio - for building and running the Android app

• MobiVM plugin for Android Studio - an ahead-of-time compiler for Java bytecode, targeting Linux, Mac OS X and iOS.

Game Features

• Control the space ship by dragging your finger on the screen
• 2 Weapons
  • laser
    • fires often
  • rocket launcher
    • fires homing rockets
    • the rocket pursues moving targets
• 2 enemy types
  • Pink
    • 1 hit to kill
    • doesn't shoot
    • drops 1 star when killed
  • Green
    • 5 hits to kill
    • aims at you and shoots a simple energy ball
    • drops 3 stars when killed
• Stars are magnetically attracted to the ship when you are close enough
• Slow-mo
  • Activated when you lift your finger off the screen

TODO

• Levels

• More enemy types

• More weapons types

• Bosses

• Upgrades

• Items which can be picked up

• Cool physics, explosions and texture graphics

Soundtrack

• the soundtrack music is taken from Unreal Tournament

Screenshots

How to record game play video and make into a gif

Record Android screen using Screen Recorder (Android 11+)

• Screen Record function is available on Android 11+ by default. No need to install third party apps

• Swipe down from Android system tray and select Screen Record. If you don't see this option, edit your system tray to show it. You can edit by swiping down the system tray and clicking the pencil edit button

• Do not confuse Screen Record with Recorder. The later is a just voice recorder

• Configure screen recorder by optionally selecting to record System Audio and/or Microphone

• It's handy to also enable recording of screen touches

• To stop recording, swipe down from the system tray and click Stop Recording

• The video file will be saved to your internal storage after a short processing time

Extract frames from video with VLC player

• install VLC player

• Open VLC settings, click Show All settings, open the Scene filter under Video -> Filter

• Configure the filter by entering the filename prefix to use for each image file that will be extracted, and the directory to save them to

• Set Recording ratio - how often to extract a frame. For example, a setting of 12 will extract every 12th frame. The lower the setting the more images will be created in the output folder

• Go to Video -> Filters and check the Scene filter checkbox to actually enable the filter after configuring it

• Click Save

• Might need to close VLC and reopen it

• With Scene filter setting enabled, VLC will extract frames from every video while it's playing.

Remember, frames are extracted only while the video is playing. You can stop and seek the video to any position and play it to begin extraction. Stop playing to stop extraction.

• To stop VLC from extracting frames in the future, disable the filter by unchecking the Scene filter checkbox in settings

Make a GIF from a set of images using ffmpeg

• install ffmpeg. Can use homebrew.

• The command below will make all png files inside the script folder into a gif called output.gif

• The filename pattern is specified with, -pattern_type glob -i '*.png'

• Framerate is set to 12 frames per second with, -framerate 12, default framerate is 25.

• The images will be scaled to 640 pixels wide while maintaining aspect ratio, -2 syntax means "maintain aspect ratio"

ffmpeg -framerate 12 -pattern_type glob -i '*.png' -filter_complex "[0:v]scale=640:-2,split[x][z];[x]palettegen[y];[z][y]paletteuse" output.gif