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授权协议 Readme
开发语言 SHELL
操作系统 跨平台
软件类型 开源软件
所属分类 游戏/娱乐
开源组织
地区 不详
投 递 者 首席测试
适用人群 未知
收录时间 2021-12-24

软件简介

Antsy Alien Attack!
Antsy Alien Attack!

A game, written in Bash, that is a somewhat retro-a-like shoot 'em up. Hopefully.

Antsy Alien Attack!

Made with 💝 for

Building, Testing, and Installation

Ubuntu

You'll need the following dependencies:

  • coreutils for stty
  • joy2key (optional)
  • lolcat
  • mpg123
  • ncurses-bin
  • procps
  • vorbis-tools
sudo apt install coreutils lolcat mpg123 ncurses-bin procps vorbis-tools

Execute ./aaa.sh to run the game.

./aaa.sh

XBox controller support

This step is optional.

sudo apt install libx11-dev x11-utils
wget -c http://sourceforge.net/projects/joy2key/files/joy2key/1.6.3/joy2key-1.6.3.tar.bz2
wget -c http://sourceforge.net/p/joy2key/patches/_discuss/thread/e73f20a1/33d7/attachment/button_list_segfault.patch
tar xvf joy2key-1.6.3.tar.bz2
patch -p0 -i ../button_list_segfault.patch
cd joy2key-1.6.3
./configure --prefix=/usr/local
make
sudo make install

Steam Controller

Player 1 and Player 2 control profiles for sc-controller can be found in the cfg/ directory.

  • Antsy Alien Attack - P1.sccprofile
  • Antsy Alien Attack - P2.sccprofile

Plans

  • Tick
    • Hardware interrupt trap to govern the game loop via a subshell.
  • Input handler
    • Keyboard
    • Xbox360 Controller
  • Graphics
    • Framebuffer
    • Sprite engine
    • Sprite collision detection
    • Sprite overlays
    • Starfield
    • Performance metrics
  • Animators
    • Player thrust
    • Player roll
    • Explosion animations
  • Audio
    • Sound effects engine
    • Music engine
    • Disable audio for remote connections
  • Title screen engine
    • Main screen artwork
    • Game over artwork
    • Victory artwork
  • Enemies
    • Fighters
    • Hunter Fighter AI
    • Sniper Fighter AI
    • Boss ships
    • Boss ship AI
  • Power ups
    • Bonus points
    • Weapon upgrades
    • Shields
    • Smartbomb
    • Extra life
  • Level progression
    • Number of enemies rises
    • Enemy firepower increases
    • Enemy speed increases
    • Bonus spawn rate decreases
    • Bonus value increases
    • Canyon levels, narrow playable area
    • Level progression announcements
    • Level-up skill points
  • 2P
    • Local
    • Network
  • Title screen attract mode
    • High score
    • Configuration
    • Credits
  • Install
    • Script
    • PPA
    • Snap

Title Screens

The title graphics are using toilet and lolcat via tools/render-titles.sh. You can preview of all the toilet font styles using this:

for FONT in /usr/share/figlet/*.tlf; do echo $(basename $FONT) && toilet -t -f $(basename $FONT) --filter border "Antsy Alien Attack!" | lolcat -f -F 0.2; done

Game Assets

I found music and sound effects on Open Game Art. I ended up using Creative Commons licensed music from Patrick de Arteaga and sound effects from Kenney Vleugels and Viktor Hahn.

Fonts

Terminal fonts

ANSI & ASCII

Editors

Learnings

  • subshells and traps.
  • case is twice as fast as if, elif, else, fi.
  • echo -e is faster than tput and tput is faster that printf.
  • Arithmetic comparison are faster than tests
    • For example if ((HUNT_P1 == 1)); then is faster than if [ ${HUNT_P1} -eq 1]; then
  • Bash has C style loops
    • Like this for (( FIGHTER_LOOP=0; FIGHTER_LOOP < TOTAL_FIGHTERS; FIGHTER_LOOP++ )); do
  • I never knew about ((TOTAL_STARS++)) or ((TOTAL_STARS+=5)) or ((TOTAL_STARS+=MORE_STARS))
  • Px437 IBM VGA Regular at 16px is best font.

Slides from a presentation I gave at FOSS Talk Live 2019 as part of the Ubuntu Podcast live show are also available:

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