<palign="center">A <b>high-performance</b> library for writing <b>tile-based</b> games for the Apple IIgs personal computer in 65816 assembly langugage. Unlock the full, 16-bit potential of the last machine of the Apple ][ line.</p>
# Introduction
The Generic Tile Engine (GTE) project is a tile engine built to exploit the unique hardware capabilities of the Apple IIgs personal computer. It supports the Apple IIgs super hires graphics mode (320x200, 16/256 colors) and provides two full-screen independent scrolling layers along with software sprites. The API and core functionality of the library is inspired by the graphics hardware of the NES/SMS/SNES/Genesis console era.
The library iscurrently implemented as a set of source files that must be compiled into a GS/OS application. A set of example project can be found under the `demos` folder. Each demo folder uses a `package.json` file to define the build targets and a build of each application can be created by executing a `npm run build` command.
Each demo application has a build script that also builds the toolset and copies it, along with the demo S16 application file, to the target disk image.
GTE uses the [merlin32](https://brutaldeluxe.fr/products/crossdevtools/merlin/) assembler to compile its source into GS/OS OMF files and [Cadius](https://brutaldeluxe.fr/products/crossdevtools/cadius/index.html) to copy those files onto a ProDOS disk image. The paths to these tool can be set in the `package.json` file.
An empty 2MG disk image is included in `emu/Target.2mg` and is used as the default location for copying demo applications. This image can be mounted in any IIgs emulator.
