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-- Server-side code of the test lua object
--
-- Some helper functions and classes
--
function vector_subtract(a, b)
return {X=a.X-b.X, Y=a.Y-b.Y, Z=a.Z-b.Z}
end
function vector_add(a, b)
return {X=a.X+b.X, Y=a.Y+b.Y, Z=a.Z+b.Z}
end
function vector_multiply(a, d)
return {X=a.X*d, Y=a.Y*d, Z=a.Z*d}
end
--
-- Actual code
--
counter = 0
counter2 = 0
counter3 = 0
counter4 = 0
death_counter = 0
-- This is got in initialization from object_get_base_position(self)
position = {X=0,Y=0,Z=0}
rotation = {X=0, Y=math.random(0,360), Z=0}
dir = 1
temp1 = 0
function on_step(self, dtime)
--[[if position.Y > 9.5 then
position.Y = 6
end
if position.Y < 5.5 then
position.Y = 9]]
-- Limit step to a sane value; it jumps a lot while the map generator
-- is in action
if dtime > 0.5 then
dtime = 0.5
end
-- Returned value has these fields:
-- * int content
-- * int param1
-- * int param2
p = {X=position.X, Y=position.Y-0.35, Z=position.Z}
n = object_get_node(self, p)
f = get_content_features(n.content)
if f.walkable then
dir = 1
else
dir = -1
end
-- Keep the object approximately at ground level
position.Y = position.Y + dtime * 2.0 * dir
-- Move the object around
position.X = position.X + math.cos(math.pi+rotation.Y/180*math.pi)
* dtime * 2.0
position.Z = position.Z + math.sin(math.pi+rotation.Y/180*math.pi)
* dtime * 2.0
-- This value has to be set; it determines to which player the
-- object is near to and such
object_set_base_position(self, position)
counter4 = counter4 - dtime
if counter4 < 0 then
counter4 = counter4 + math.random(0.5,8)
-- Mess around with the map
np = vector_add(position, {X=0,Y=0,Z=0})
object_place_node(self, np, {content=0})
-- A node could be digged out with this:
-- object_dig_node(self, np)
end
counter3 = counter3 - dtime
if counter3 < 0 then
counter3 = counter3 + math.random(1,4)
rotation.Y = rotation.Y + math.random(-180, 180)
end
-- Send some custom messages at a custom interval
counter = counter - dtime
if counter < 0 then
counter = counter + 0.25
if counter < 0 then
counter = 0
end
message = "pos " .. position.X .. " " .. position.Y .. " " .. position.Z
object_add_message(self, message)
message = "rot " .. rotation.X .. " " .. rotation.Y .. " " .. rotation.Z
object_add_message(self, message)
end
-- Mess around with the map
--[[counter2 = counter2 - dtime
if counter2 < 0 then
counter2 = counter2 + 3
if temp1 == 0 then
temp1 = 1
object_dig_node(self, {X=0,Y=1,Z=0})
else
temp1 = 0
n = {content=1}
object_place_node(self, {X=0,Y=5,Z=0}, n)
end
end]]
-- Remove the object after some time
death_counter = death_counter + dtime
if death_counter > 30 then
object_remove(self)
end
end
-- This stuff is passed to a newly created client-side counterpart of this object
function on_get_client_init_data(self)
-- Just return some data for testing
return "result of get_client_init_data"
end
-- This should return some data that mostly saves the state of this object
-- Not completely implemented yet
function on_get_server_init_data(self)
-- Just return some data for testing
return "result of get_server_init_data"
end
-- When the object is loaded from scratch, this is called before the first
-- on_step(). Data is an empty string or the output of an object spawner
-- hook, but such things are not yet implemented.
--
-- At reload time, the last output of get_server_init_data is passed as data.
--
-- This should initialize the position of the object to the value returned
-- by object_get_base_position(self)
--
-- Not completely implemented yet
--
function on_initialize(self, data)
print("server object got initialization: " .. data)
position = object_get_base_position(self)
end
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