protected int Wander(IntPtr L)
{
var minDistance = 30;
var maxDistance = 50;
if (lua_gettop(L) > 0)
{
minDistance = maxDistance = luaL_checkinteger(L, 1);
}
if (lua_gettop(L) > 1)
{
maxDistance = luaL_checkinteger(L, 2);
}
lua_settop(L, 0);
// Try to find a valid random destination. Official AIs
// seem to only wander in one of the 4 major directions,
// so if we check all 4 and don't find a valid destination,
// we can't move. Just wait for a moment in that case.
var destination = Position.Zero;
var distance = _rnd.Next(minDistance, maxDistance + 1);
var validDest = false;
var pos = this.Entity.Position;
var firstDir = _rnd.Next(4);
for (var i = 0; i < 4; ++i)
{
var angle = ((firstDir + i) % 4) * 90;
destination = pos.GetRelative(new Direction(angle), distance);
if (this.Entity.Map.Ground.IsValidPosition(destination))
{
validDest = true;
break;
}
}
if (validDest)
{
var routine = new MoveToRoutine(this, destination);
this.StartRoutine(routine);
}
else
{
this.StartRoutine(new WaitRoutine(TimeSpan.FromSeconds(2)));
}
return(lua_yield(L, 0));
}
protected int MoveRandom(IntPtr L)
{
var radius = (float)luaL_checknumber(L, 1);
lua_settop(L, 0);
var destination = this.Entity.Position.GetRandomInRange2D((int)radius, _rnd);
if (this.Entity.Map.Ground.IsValidPosition(destination))
{
var routine = new MoveToRoutine(this, destination);
this.StartRoutine(routine);
}
else
{
this.StartRoutine(new WaitRoutine(TimeSpan.FromSeconds(2)));
}
return(lua_yield(L, 0));
}
protected int MoveTo(IntPtr L)
{
var x = (float)luaL_checknumber(L, 1);
var z = (float)luaL_checknumber(L, 2);
lua_settop(L, 0);
var destination = new Position(x, 0, z);
if (this.Entity.Map.Ground.IsValidPosition(destination))
{
var routine = new MoveToRoutine(this, destination);
this.StartRoutine(routine);
}
else
{
this.StartRoutine(new WaitRoutine(TimeSpan.FromSeconds(2)));
}
return(lua_yield(L, 0));
}
protected int MoveRelative(IntPtr L)
{
var addX = (float)luaL_checknumber(L, 1);
var addZ = (float)luaL_checknumber(L, 2);
lua_settop(L, 0);
var destination = this.Entity.Position;
destination.X += addX;
destination.Z += addZ;
if (this.Entity.Map.Ground.IsValidPosition(destination))
{
var routine = new MoveToRoutine(this, destination);
this.StartRoutine(routine);
}
else
{
this.StartRoutine(new WaitRoutine(TimeSpan.FromSeconds(2)));
}
return(lua_yield(L, 0));
}
