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--[[
Tower Crane (Liebherr) Mod
by JoSt
Copyright (C) 2017 Joachim Stolberg
LGPLv2.1+
See LICENSE for more information
]]--
towercrane = {}
local hook = {
physical = true, -- should be true, otherwise you dive into the underground
collisionbox = {-0.2, -0.2, -0.2, 0.2, 0.2, 0.2}, -- Groesse des Wuerfels bei Kollisionen
collide_with_objects = false,
visual = "cube", -- Object als Wuerfel
visual_size = {x=0.4, y=0.4}, -- Groesse des sichtbaren Wuerfels
textures = {
"towercrane_hook.png",
"towercrane_hook.png",
"towercrane_hook.png",
"towercrane_hook.png",
"towercrane_hook.png",
"towercrane_hook.png",
},
groups = {cracky=1},
-- local variabels
driver = nil,
speed_forward=0,
speed_right=0,
speed_up=0,
}
-- ":" methode von "hook" (self ist versteckt)
function hook:on_rightclick(clicker)
if self.driver and clicker == self.driver then -- aussteigen?
clicker:set_detach()
self.driver = nil
elseif not self.driver then -- einsteigen?
self.driver = clicker
clicker:set_attach(self.object, "", {x=0,y=0,z=0}, {x=0,y=0,z=0})
end
end
function hook:on_step(dtime)
-- remove hook from last visit
if self.pos1 == nil or self.pos2 == nil then
self.object:remove()
return
end
if self.driver then
local ctrl = self.driver:get_player_control()
local yaw = self.driver:get_look_horizontal()
local pos = self.driver:getpos()
local max_speed = 5
local velocity = 0.5
if ctrl.up then -- forward
self.speed_forward = math.min(self.speed_forward + velocity, max_speed)
elseif ctrl.down then -- backward
self.speed_forward = math.max(self.speed_forward - velocity, -max_speed)
elseif self.speed_forward > 0 then
self.speed_forward = self.speed_forward - velocity
elseif self.speed_forward < 0 then
self.speed_forward = self.speed_forward + velocity
end
if ctrl.right then -- right
self.speed_right = math.min(self.speed_right + velocity, max_speed)
elseif ctrl.left then -- left
self.speed_right = math.max(self.speed_right - velocity, -max_speed)
elseif self.speed_right > 0 then
self.speed_right = self.speed_right - velocity
elseif self.speed_right < 0 then
self.speed_right = self.speed_right + velocity
end
if ctrl.jump then -- up
self.speed_up = math.min(self.speed_up + velocity, 5)
elseif ctrl.sneak then -- down
self.speed_up = math.max(self.speed_up - velocity, -5)
elseif self.speed_up > 0 then
self.speed_up = self.speed_up - velocity
elseif self.speed_up < 0 then
self.speed_up = self.speed_up + velocity
end
-- calculate the direction vector
local vx = math.cos(yaw+math.pi/2) * self.speed_forward + math.cos(yaw) * self.speed_right
local vz = math.sin(yaw+math.pi/2) * self.speed_forward + math.sin(yaw) * self.speed_right
-- check if outside of the construction area
if pos.x < self.pos1.x then vx= velocity end
if pos.x > self.pos2.x then vx= -velocity end
if pos.y < self.pos1.y then self.speed_up= velocity end
if pos.y > self.pos2.y then self.speed_up= -velocity end
if pos.z < self.pos1.z then vz= velocity end
if pos.z > self.pos2.z then vz= -velocity end
self.object:setvelocity({x=vx, y=self.speed_up,z=vz})
else
self.object:setvelocity({x=0, y=0,z=0})
end
end
-- LuaEntitySAO (non-player moving things): see http://dev.minetest.net/LuaEntitySAO
minetest.register_entity("towercrane:hook", hook)
----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
local function turnright(dir)
local facedir = minetest.dir_to_facedir(dir)
return minetest.facedir_to_dir((facedir + 1) % 4)
end
local function turnleft(dir)
local facedir = minetest.dir_to_facedir(dir)
return minetest.facedir_to_dir((facedir + 3) % 4)
end
local function construct_crane(pos, dir, height, width, owner)
pos.y = pos.y + 1
minetest.env:add_node(pos, {name="towercrane:mast_ctrl_off", param2=minetest.dir_to_facedir(dir)})
local meta = minetest.get_meta(pos)
meta:set_string("dir", minetest.pos_to_string(dir))
meta:set_string("owner", owner)
meta:set_int("height", height)
meta:set_int("width", width)
for i = 1,height+1 do
pos.y = pos.y + 1
minetest.env:add_node(pos, {name="towercrane:mast"})
end
pos.y = pos.y - 2
pos.x = pos.x - dir.x
pos.z = pos.z - dir.z
minetest.env:add_node(pos, {name="towercrane:arm2"})
pos.x = pos.x - dir.x
pos.z = pos.z - dir.z
minetest.env:add_node(pos, {name="towercrane:arm"})
pos.x = pos.x - dir.x
pos.z = pos.z - dir.z
minetest.env:add_node(pos, {name="towercrane:balance"})
pos.x = pos.x + 3 * dir.x
pos.z = pos.z + 3 * dir.z
for i = 1,width do
pos.x = pos.x + dir.x
pos.z = pos.z + dir.z
if i % 2 == 0 then
minetest.env:add_node(pos, {name="towercrane:arm2"})
else
minetest.env:add_node(pos, {name="towercrane:arm"})
end
end
end
local function dig_crane(pos, dir, height, width)
pos.y = pos.y + 1
minetest.env:remove_node(pos, {name="towercrane:mast_ctrl_off"})
for i = 1,height+1 do
pos.y = pos.y + 1
minetest.env:remove_node(pos, {name="towercrane:mast"})
end
pos.y = pos.y - 2
pos.x = pos.x - dir.x
pos.z = pos.z - dir.z
minetest.env:remove_node(pos, {name="towercrane:arm2"})
pos.x = pos.x - dir.x
pos.z = pos.z - dir.z
minetest.env:remove_node(pos, {name="towercrane:arm"})
pos.x = pos.x - dir.x
pos.z = pos.z - dir.z
minetest.env:remove_node(pos, {name="towercrane:balance"})
pos.x = pos.x + 3 * dir.x
pos.z = pos.z + 3 * dir.z
for i = 1,width do
pos.x = pos.x + dir.x
pos.z = pos.z + dir.z
if i % 2 == 0 then
minetest.env:remove_node(pos, {name="towercrane:arm2"})
else
minetest.env:remove_node(pos, {name="towercrane:arm"})
end
end
end
local function place_hook(pos, dir)
pos.y = pos.y - 1
pos.x = pos.x + dir.x
pos.z = pos.z + dir.z
return minetest.add_entity(pos, "towercrane:hook")
end
minetest.register_node("towercrane:base", {
description = "Tower Crane Base",
inventory_image = "towercrane_invent.png",
tiles = {
"towercrane_base_top.png",
"towercrane_base.png",
"towercrane_base.png",
"towercrane_base.png",
"towercrane_base.png",
"towercrane_base.png",
},
paramtype2 = "facedir",
is_ground_content = false,
groups = {cracky=1},
formspec = set_formspec,
after_place_node = function(pos, placer)
local meta = minetest.get_meta(pos)
local owner = placer:get_player_name()
meta:set_string("owner", owner)
local formspec = "size[5,4]"..
"label[0,0;Construction area size]" ..
"field[1,1.5;3,1;size;height,width;]" ..
"button_exit[1,2;2,1;exit;Save]"
meta:set_string("formspec", formspec)
local fdir = minetest.dir_to_facedir(placer:get_look_dir(), false)
local dir = minetest.facedir_to_dir(fdir)
meta:set_string("dir", minetest.pos_to_string(dir))
end,
on_receive_fields = function(pos, formname, fields, player)
if fields.size == nil then
return
end
local meta = minetest.get_meta(pos)
if not player or not player:is_player() then
return
end
local owner = meta:get_string("owner")
if player:get_player_name() ~= owner then
return
end
local dir = minetest.string_to_pos(meta:get_string("dir"))
local height = meta:get_int("height")
local width = meta:get_int("width")
local org_pos = table.copy(pos)
if dir ~= nil and height ~= nil and width ~= nil then
dig_crane(pos, dir, height, width)
end
--check for correct size format
size = string.split(fields.size, ",")
if #size == 2 then
local height = tonumber(size[1])
local width = tonumber(size[2])
if height ~= nil and width ~= nil then
height = math.max(height, 8)
height = math.min(height, 24)
width = math.max(width, 8)
width = math.min(width, 24)
meta:set_int("height", height)
meta:set_int("width", width)
meta:set_string("infotext", "Crane size: " .. height .. "," .. width)
if dir ~= nil then
construct_crane(org_pos, dir, height, width, owner)
end
end
end
end,
on_destruct = function(pos)
local meta = minetest.get_meta(pos)
local dir = minetest.string_to_pos(meta:get_string("dir"))
local height = meta:get_int("height")
local width = meta:get_int("width")
if dir ~= nil and height ~= nil and width ~= nil then
dig_crane(pos, dir, height, width)
end
end,
})
minetest.register_on_leaveplayer(function(ObjectRef, timed_out)
print("Schade")
end
)
minetest.register_node("towercrane:balance", {
description = "Tower Crane Balance",
tiles = {
"towercrane_base.png",
"towercrane_base.png",
"towercrane_base.png",
"towercrane_base.png",
"towercrane_base.png",
"towercrane_base.png",
},
paramtype2 = "facedir",
is_ground_content = false,
groups = {crumbly=0, not_in_creative_inventory=1},
})
minetest.register_node("towercrane:mast", {
description = "Tower Crane Mast",
drawtype = "glasslike_framed",
tiles = {
"towercrane_mast.png",
"towercrane_mast.png",
"towercrane_mast.png",
"towercrane_mast.png",
"towercrane_mast.png",
"towercrane_mast.png",
},
paramtype2 = "facedir",
is_ground_content = false,
groups = {crumbly=0, not_in_creative_inventory=1},
})
minetest.register_node("towercrane:mast_ctrl_on", {
description = "Tower Crane Mast Ctrl On",
drawtype = "node",
tiles = {
"towercrane_mast_ctrl.png",
"towercrane_mast_ctrl.png",
"towercrane_mast_ctrl_on.png",
"towercrane_mast_ctrl_on.png",
"towercrane_mast_ctrl.png",
"towercrane_mast_ctrl.png",
},
on_rightclick = function (pos, node, clicker)
local meta = minetest.get_meta(pos)
if not clicker or not clicker:is_player() then
return
end
if clicker:get_player_name() ~= meta:get_string("owner") then
return
end
node.name = "towercrane:mast_ctrl_off"
minetest.swap_node(pos, node)
local id = minetest.hash_node_position(pos)
if towercrane.id then
towercrane.id:remove()
towercrane.id = nil
else
end
end,
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("infotext", "Switch crane on/off")
end,
after_place_node = function(pos, placer, itemstack, pointed_thing)
local meta = minetest.get_meta(pos)
local owner = placer:get_player_name()
meta:set_string("owner", owner)
end,
paramtype2 = "facedir",
is_ground_content = false,
groups = {crumbly=0, not_in_creative_inventory=1},
})
minetest.register_node("towercrane:mast_ctrl_off", {
description = "Tower Crane Mast Ctrl Off",
drawtype = "node",
tiles = {
"towercrane_mast_ctrl.png",
"towercrane_mast_ctrl.png",
"towercrane_mast_ctrl_off.png",
"towercrane_mast_ctrl_off.png",
"towercrane_mast_ctrl.png",
"towercrane_mast_ctrl.png",
},
on_rightclick = function (pos, node, clicker)
-- switch switch on, calculate the construction area, and place the hook
local meta = minetest.get_meta(pos)
-- only the owner is allowed to switch
if not clicker or not clicker:is_player() then
return
end
if clicker:get_player_name() ~= meta:get_string("owner") then
return
end
-- swap to the other node
node.name = "towercrane:mast_ctrl_on"
minetest.swap_node(pos, node)
local dir = minetest.string_to_pos(meta:get_string("dir"))
if pos ~= nil and dir ~= nil then
-- store hook instance in 'towercrane'
local id = minetest.hash_node_position(pos)
towercrane.id = place_hook(table.copy(pos), dir)
-- calculate the construction area dimension (pos, pos2)
local height = meta:get_int("height")
local width = meta:get_int("width")
-- pos1 = close/right
dir = turnright(dir)
local pos1 = vector.add(pos, vector.multiply(dir, width/2))
dir = turnleft(dir)
local pos1 = vector.add(pos1, vector.multiply(dir, 1))
pos1.y = pos.y - 1
-- pos2 = far/left
local pos2 = vector.add(pos1, vector.multiply(dir, width-1))
dir = turnleft(dir)
pos2 = vector.add(pos2, vector.multiply(dir, width))
pos2.y = pos.y - 4 + height
-- normalize x/z so that pos2 > pos1
if pos2.x < pos1.x then
pos2.x, pos1.x = pos1.x, pos2.x
end
if pos2.z < pos1.z then
pos2.z, pos1.z = pos1.z, pos2.z
end
-- store pos1/pos2 in the hook (LuaEntitySAO)
towercrane.id:get_luaentity().pos1 = pos1
towercrane.id:get_luaentity().pos2 = pos2
end
end,
on_construct = function(pos)
-- add infotext
local meta = minetest.get_meta(pos)
meta:set_string("infotext", "Switch crane on/off")
end,
after_place_node = function(pos, placer, itemstack, pointed_thing)
-- store owner for dig protection
local meta = minetest.get_meta(pos)
local owner = placer:get_player_name()
meta:set_string("owner", owner)
end,
paramtype2 = "facedir",
is_ground_content = false,
groups = {crumbly=0, not_in_creative_inventory=1},
})
minetest.register_node("towercrane:arm", {
description = "Tower Crane Arm",
drawtype = "glasslike_framed",
tiles = {
"towercrane_arm.png",
"towercrane_arm.png",
"towercrane_arm.png",
"towercrane_arm.png",
"towercrane_arm.png",
"towercrane_arm.png",
},
paramtype2 = "facedir",
is_ground_content = false,
groups = {crumbly=0, not_in_creative_inventory=1},
})
minetest.register_node("towercrane:arm2", {
description = "Tower Crane Arm2",
drawtype = "glasslike_framed",
tiles = {
"towercrane_arm2.png",
"towercrane_arm2.png",
"towercrane_arm2.png",
"towercrane_arm2.png",
"towercrane_arm2.png",
"towercrane_arm2.png",
},
paramtype2 = "facedir",
is_ground_content = false,
groups = {crumbly=0, not_in_creative_inventory=1},
})