KOPS

The original README.txt can be found as
src/README.txt.

The original user manual can be found as
doc/manual.txt.

This is a classic 90s 2D cave flying shooter game, ported to SDL2. It
runs on at least macOS, Linux and Windows.

The port is maintained by the Suomipelit
organization, whose mission is to archive, port, and maintain classic
Finnish freeware and shareware games. Feel free to join the
Suomipelit Slack too!

Differences compared to the original game

This port is based on KOPS’s SDL1 port sources released by the original
author at
SourceForge. Released
sources were versioned as 1.2. However the popular KOPS SDL1 port was
released as version 1.0, so there might be some changes to the original.

Changes in SDL2 port:

• Game always starts in windowed mode

• Left alt + return toggles full-screen

• Partial A.I. (bot) code added after 1.0 release has been disabled by
  default. It can be re-enabled with EXPERIMENTAL_BOT_SUPPORT flag

• Sounds have been ported from FMOD to SDL2_Mixer

• Greatly reduced CPU load

• F9/F10 can be used to adjust the internal game clock.

Fixes:

• Type changes to fix runtime crash on x64 builds

• Crash fix when picking up ammo, likely introduced after 1.0 release

Building from source

Requirements:

• CMake
• C compiler: At least gcc, clang and Visual Studio are supported
• Libraries: SDL2, SDL2_mixer, zlib
  • On macOS, you can install these with Homebrew. brew install sdl2 sdl2_mixer zlib

Note While KOPS port is fully playable with official SDL2_Mixer,
the music track looping doesn’t work correctly. While you probably
won’t even notice the difference unless you know what to listen for,
it can be fixed by compiling SDL2_Mixer by yourself and changing
settings.mLoopCount = 0; to settings.mLoopCount = -1; in
music_modplug.c.

Building:

cd bin
cmake ..
cmake --build .

Releases

Version 1 - 2019-11-23

• Initial release