[SCRIPT] Machine puzzle and other things

[The chaser]

For 3:

void OnStart();
{
AddEntityCollideCallback("Entity_1", "Script_1", "Blah", true, 1);
AddEntityCollideCallback("Entity_2", "Script_2", "Blah_1", true, 1);
}

void Blah (string &in asParent, string &in asChild, int alState)
{
AddLocalVarInt("Gangnam", 1);
func_check();
}

void Blah_1 (string &in asParent, string &in asChild, int alState)
{
AddLocalVarInt("Gangnam", 1);
func_check();
}

void func_check();
{
if (GetLocalVarInt("Gangnam") == 2)
{
SetEntityConnectionStateChangeCallback("Levar_elevator", "Map");
}
}

void Map (string &in asEntity, int alState)
{
if (alState == 1)
{
ChangeMap(string& asMapName, string& asStartPos, string& asStartSound, string& asEndSound);
}
}