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Code Issues 121 Wiki Activity

Refactor Lua bindings to not use FFI anymore

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- Lua bindings are no longer using FFI in favor of the "classic" Lua C API.
  - This makes it work properly on native Linux builds.
- Changed the Lua API slightly:
  - Removed the `api.event_preparefunc()` function because it is no longer necessary. Instead, you can pass any function you want without preparing it first.
  - Added an `api.event_exists()` function. Takes a single `name` argument.
  - Any `api.find_*()` functions return `nil` instead of an userdata representing a null pointer when the requested object is not found.
This commit is contained in:
jakubg1
2026-04-01 01:42:54 +02:00
parent 84f86e725c
commit ca8e4aae71
5 changed files with 370 additions and 294 deletions
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35
scripting/lua.h
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@@ -1,7 +1,9 @@
#pragma once
#include <lua.hpp>
#include <stdafx.h>
class basic_event;
class TMemCell;
class TDynamicObject;
class lua
@@ -9,14 +11,39 @@ class lua
lua_State *state;
static int atpanic(lua_State *s);
static int openffi(lua_State *s);
static int scriptapi_event_create(lua_State *L);
static int scriptapi_event_find(lua_State *L);
static int scriptapi_event_exists(lua_State *L);
static int scriptapi_event_getname(lua_State *L);
static int scriptapi_event_dispatch(lua_State *L);
static int scriptapi_event_dispatch_n(lua_State *L);
static int scriptapi_track_find(lua_State *L);
static int scriptapi_track_isoccupied(lua_State *L);
static int scriptapi_track_isoccupied_n(lua_State *L);
static int scriptapi_isolated_find(lua_State *L);
static int scriptapi_isolated_isoccupied(lua_State *L);
static int scriptapi_isolated_isoccupied_n(lua_State *L);
static int scriptapi_train_getname(lua_State *L);
static int scriptapi_dynobj_putvalues(lua_State *L);
static int scriptapi_memcell_find(lua_State *L);
static int scriptapi_memcell_read(lua_State *L);
static int scriptapi_memcell_read_n(lua_State *L);
static int scriptapi_memcell_update(lua_State *L);
static int scriptapi_memcell_update_n(lua_State *L);
static int scriptapi_random(lua_State *L);
static int scriptapi_writelog(lua_State *L);
static int scriptapi_writeerrorlog(lua_State *L);
public:
lua();
~lua();
std::string get_error();
void interpret(std::string file);
std::string get_error() const;
void interpret(const std::string& file) const;
static void unref(lua_State *L, int ref);
static void dispatch_event(lua_State *L, int handler, basic_event *event, const TDynamicObject *activator);
static void push_memcell_values(lua_State *L, const TMemCell *mc);
typedef void (*eventhandler_t)(basic_event*, const TDynamicObject*);
struct memcell_values { const char *str; double num1; double num2; };
};