8d37628ae7
Cross-platform bugs: - ncomplib.c: fseek was called as fseek(f, whence, offset) instead of fseek(f, offset, whence). Seeks only worked correctly when offset happened to numerically equal a valid whence constant. - neonucleus.c: nn_realloc passed memory pointer instead of ctx to nn_alloc in the NULL and sentinel paths. Any call with memory=NULL dereferences NULL as a context struct and crashes. Confirmed by test_realloc.c which crashes before fix and passes after. - neonucleus.h: NN_TiB was defined as (1024 * NN_TiB), referencing itself. Fixed to ((size_t)1024 * NN_GiB). - luaarch.c: unicode functions were registered on the component Lua table instead of the unicode table. Wrong stack index variable was used in all five lua_setfield calls. - neonucleus.c: NN_ATOMIC_NONE versions of nn_incRef/nn_decRef took 1 argument but were called with 2 everywhere. Added the missing size_t n parameter. Windows build: - neonucleus.c: NN_LOCK_CREATE in NN_THREAD_WINDOWS was missing a return statement, falling through into NN_LOCK_DESTROY and immediately closing the freshly created mutex handle. - ncomplib.c: Added Windows implementations for opendir, readdir, closedir, stat, mkdir and directory removal using FindFirstFileA, FindNextFileA, _stat, _mkdir and _rmdir. - main.c: Fall back to USERNAME env var when USER is not set. - neonucleus.h: Added NN_VLA macro. Expands to a plain VLA on GCC/Clang, uses _alloca on MSVC. Applied in luaarch.c and neonucleus.c where VLAs were used. - neonucleus.h: Added NN_INIT macro. Expands to a compound literal cast on GCC/Clang, expands to nothing on MSVC which does not support compound literals as constant initializers at file scope. Applied to all global struct initializers in neonucleus.c. - neonucleus.c: Auto-define NN_ATOMIC_NONE on MSVC in C mode since MSVC does not provide stdatomic.h outside of C++ mode.
NeoNucleus
The core of NeoComputers.
It provides:
- the computer model and state implementation
- architecture system
- (NOT NOW) basic component implementations
- (NOT NOW) standard emulator
- (NOT NOW) some extra components
The library does not provide:
- The sandbox (equivalent to OpenComputer's
machine.lua) - Default architectures
- Default host interop (as in, the vtables that control the basic component's internals, such as the filesystem implementation)
The emulator will (as its gonna be made after the engine is functional) provide:
- A simple Lua sandbox
- Very simple workspaces
- Ocelot components for debug
- Headless mode (single computer, uses actual terminal for a teletypewriter).