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Expose splashes[], splashes.iterate and #splashes to Lua

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JugadorXEI 2025-03-17 20:49:04 +01:00
parent 0e083ba8d6
commit bca1e0a5e1
1 changed files with 79 additions and 0 deletions
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79
src/lua_terrainlib.c
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@ -222,6 +222,75 @@ static int splash_num(lua_State *L)
return 1;
}
static int lib_iterateSplashes(lua_State *L)
{
size_t i;
if (lua_gettop(L) < 2)
{
lua_pushcfunction(L, lib_iterateSplashes);
return 1;
}
lua_settop(L, 2);
lua_remove(L, 1); // state is unused.
if (!lua_isnil(L, 1))
i = K_GetSplashHeapIndex(*(t_splash_t **)luaL_checkudata(L, 1, META_SPLASH)) + 1;
else
i = 0;
// terrains are always valid, only added, never removed
if (i < K_GetNumSplashDefs())
{
LUA_PushUserdata(L, K_GetSplashByIndex(i), META_SPLASH);
return 1;
}
return 0;
}
static int lib_getSplash(lua_State *L)
{
const char *field;
size_t i;
// find terrain by number
if (lua_type(L, 2) == LUA_TNUMBER)
{
i = luaL_checkinteger(L, 2);
if (i >= K_GetNumSplashDefs())
return luaL_error(L, "splashes[] index %d out of range (0 - %d)", i, K_GetNumSplashDefs()-1);
LUA_PushUserdata(L, K_GetSplashByIndex(i), META_SPLASH);
return 1;
}
field = luaL_checkstring(L, 2);
// special function iterate
if (fastcmp(field,"iterate"))
{
lua_pushcfunction(L, lib_iterateSplashes);
return 1;
}
// find terrain by name
t_splash_t *byname = K_GetSplashByName(field);
if (byname != NULL)
{
LUA_PushUserdata(L, byname, META_SPLASH);
return 1;
}
return 0;
}
static int lib_numSplashes(lua_State *L)
{
lua_pushinteger(L, K_GetNumSplashDefs());
return 1;
}
static int footstep_get(lua_State *L)
{
t_footstep_t *footstep = *((t_footstep_t **)luaL_checkudata(L, 1, META_FOOTSTEP));
@ -685,6 +754,16 @@ int LUA_TerrainLib(lua_State *L)
lua_setfield(L, -2, "__len");
lua_pop(L,1);
lua_newuserdata(L, 0);
lua_createtable(L, 0, 2);
lua_pushcfunction(L, lib_getSplash);
lua_setfield(L, -2, "__index");
lua_pushcfunction(L, lib_numSplashes);
lua_setfield(L, -2, "__len");
lua_setmetatable(L, -2);
lua_setglobal(L, "splashes");
luaL_newmetatable(L, META_FOOTSTEP);
lua_pushcfunction(L, footstep_get);
lua_setfield(L, -2, "__index");