Apple-2gs-SW/iigs-game-engine
1
0
Fork 0
mirror of https://github.com/lscharen/iigs-game-engine.git synced 2024-11-21 20:30:50 +00:00
Code Issues Projects Releases Wiki Activity
A tile-based game engine for the Apple IIgs written in 65816 asssembly language
378 Commits 5 Branches 1 Tag 36 MiB
Assembly 90.9%
JavaScript 7.6%
C 1.1%
Python 0.3%
3063ab88f9
Go to file
Lucas Scharenbroich 3063ab88f9 Fix sprite stamp rendering for 8x16 and 16x8 sprites
2022-07-21 22:51:25 -05:00
.github/images Start adding some basic documentation on building from source 2022-02-24 21:54:11 -06:00
.vscode
archive
demos Demo 9 2022-07-21 20:29:55 -05:00
docs Add initial documentation for all remaining stable toolbox calls 2022-07-04 20:52:28 -05:00
emu Final reorg; all projects build into a unified disk image for testing 2021-08-26 17:15:44 -05:00
macros Fix issues preventing BG1 per-line offsets from working 2022-07-16 16:42:41 -05:00
ref Reorg files; focus on S16 artifact 2021-03-21 21:59:54 -05:00
src Fix sprite stamp rendering for 8x16 and 16x8 sprites 2022-07-21 22:51:25 -05:00
tools Demo 5 complete 2022-07-21 20:26:46 -05:00
_FileInformation.txt Local cleanup 2022-06-09 07:36:40 -05:00
.gitignore Local cleanup 2022-06-09 07:36:40 -05:00
build-image.bat Refactor to support building a tool and new demo to try and use it [not working] 2022-04-23 00:47:13 -05:00
package.json More jekyll work 2022-06-27 20:33:34 -05:00
README.md Move documentation to the github pages location. 2022-07-04 20:56:37 -05:00

README.md


Generic Tile Engine for the Apple IIgs

A high-performance library for writing tile-based 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.

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.


Parallax scrolling of two full-screen static layers

Building from Source

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.

Dependencies

GTE uses the merlin32 assembler to compile its source into GS/OS OMF files and Cadius 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.


Build of demo app in the IIgs Finder

Documentation

Please refer to the GTE Toolbox documentation.

References