我需要为 lua 脚本调用一个 C 函数。我将从该函数返回一个数组作为表。我使用了代码 blow 但崩溃了。谁能告诉我如何使用它?
struct Point {
int x, y;
}
typedef Point Point;
static int returnImageProxy(lua_State *L)
{
Point points[3] = {{11, 12}, {21, 22}, {31, 32}};
lua_newtable(L);
for (int i = 0; i 3; i++) {
lua_newtable(L);
lua_pushnumber(L, points[i].x);
lua_rawseti(L, -2, 2*i+1);
lua_pushnumber(L, points[i].y);
lua_rawseti(L, -2, 2*i+2);
lua_settable(L,-3);
}
return 1; // I want to return a Lua table like :{{11, 12}, {21, 22}, {31, 32}}
}
最佳答案
如@lhf 所述,需要更改 lua_settable
。此外,您总是添加到子表的前 2 个索引中
typedef struct Point {
int x, y;
} Point;
static int returnImageProxy(lua_State *L)
{
Point points[3] = {{11, 12}, {21, 22}, {31, 32}};
lua_newtable(L);
for (int i = 0; i < 3; i++) {
lua_newtable(L);
lua_pushnumber(L, points[i].x);
lua_rawseti(L, -2, 1);
lua_pushnumber(L, points[i].y);
lua_rawseti(L, -2, 2);
lua_rawseti(L, -2, i+1);
}
return 1; // I want to return a Lua table like :{{11, 12}, {21, 22}, {31, 32}}
}
关于c - 如何将数组作为表从 C 函数返回到 lua?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18486712/