About
R-Type is a 1987 horizontally-scrolling shoot-'em-up by Irem, in which the player pilots the R-9 'Arrowhead' starship against the alien Bydo, aided by a detachable 'Force' pod that provides both a shield and extra firepower. ProtoType is a portable build of Prototype, an R-Type remake originally released by Dark Castle Software, updated to compile on OpenPandora, Linux, ODROID, and AmigaOS4. This version replaces the original FMOD audio dependency with SDL_mixer by default (though FMOD can still be re-enabled) and switches image loading to stb_image.
How it differs from the original
Beyond retargeting it to newer and portable platforms, this version swaps the original FMOD audio library for SDL_mixer by default and uses gl4es for OpenGL support on the Pandora and ODROID.
Getting started
Compile it for your platform with the appropriate make target (Pandora, ODROID, Linux, or AmigaOS4), optionally adding SDL2 or legacy FMOD support via extra make flags.