CODEWITHSUNDEEP
c++lua
ionagamed
ionagamed

Reputation: 536

Attempting to index a number value. C++ & Lua

I'm trying to write a kind of engine that uses Lua as a script language. It gives me the error in the title.

#define el Engine::lua
int vecCreate(lua_State* vm) {
    int argc = el.argc();
    el.createTable();
    if (argc == 0) {
        el.tableAddd("x", 0.0);
        el.tableAddd("y", 0.0);
    } else if (argc == 2) {
        el.tableAddd("x", el.argd());
        el.tableAddd("y", el.argd());
    }
    return 1;
}
void Lua::createTable() {
    lua_createtable(vm, 2, 0);
    }
void Lua::tableAddd(string key, double val) {
    lua_pushstring(vm, key.c_str());
    lua_pushnumber(vm, val);
    lua_settable(vm, -3);
}
double Lua::argd() {
    double res = lua_tonumber(vm, 1);
    lua_pop(vm, 1);
    return res;
}

Am I doing it wrong? The whole script is

function draw()
    drawColor(100, 100, 100)
    drawPoly(vecNew(10, 10), vecNew(10, 100), vecNew(100, 100), vecNew(100, 10))
end

Yes, I'm sure that the problem is in the draw function

Upvotes: 0

Views: 1638

Answers (1)

ionagamed
ionagamed

Reputation: 536

Nevermind, I've just pushed a table on the stack in vecCreate before getting the arguments

Upvotes: 2

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