REPO NO LONGER UPDATED - advtrains.git - Advtrains mod for minetest.

path: root/assets/manual_img/Bildschirmfoto_2016-09-17_09-53-01.png

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author	orwell96 <mono96.mml@gmail.com>	2018-06-14 17:48:32 +0200
committer	GitHub <noreply@github.com>	2018-06-14 17:48:32 +0200
commit	a5942bdf465eb24f460f192e9097d67f24c0ced2 (patch)
tree	695950a4e9bcc6fc3509674a9482ec3305ab9161 /assets/manual_img/Bildschirmfoto_2016-09-17_09-53-01.png
parent	8d8e8c1553bc631b8f357005b506bc651de9a138 (diff)
download	advtrains-a5942bdf465eb24f460f192e9097d67f24c0ced2.tar.gz advtrains-a5942bdf465eb24f460f192e9097d67f24c0ced2.tar.bz2 advtrains-a5942bdf465eb24f460f192e9097d67f24c0ced2.zip

REPO NO LONGER UPDATED

Moved to http://git.bananach.space/advtrains.git/

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--atan2 counts angles clockwise, minetest does counterclockwise

minetest.register_privilege("train_place", {
	description = "Player can place trains on tracks not owned by player",
	give_to_singleplayer= false,
});
minetest.register_privilege("train_remove", {
	description = "Player can remove trains not owned by player",
	give_to_singleplayer= false,
});
minetest.register_privilege("train_operator", {
	description = "Player may operate trains and switch signals. Given by default. Revoke to prevent players from griefing automated subway systems.",
	give_to_singleplayer= true,
	default= true,
});

local wagon={
	collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
	--physical = true,
	visual = "mesh",
	mesh = "wagon.b3d",
	visual_size = {x=3, y=3},
	textures = {"black.png"},
	is_wagon=true,
	wagon_span=1,--how many index units of space does this wagon consume
	has_inventory=false,
}


function wagon:train()
	return advtrains.trains[self.train_id]
end

--[[about 'initalized':
	when initialized is false, the entity hasn't got any data yet and should wait for these to be set before doing anything
	when loading an existing object (with staticdata), it will be set
	when instanciating a new object via add_entity, it is not set at the time on_activate is called.
	then, wagon:initialize() will be called
	
	wagon will save only uid in staticdata, no serialized table
]]
function wagon:on_activate(sd_uid, dtime_s)
	if sd_uid~="" then
		--destroy when loaded from static block.
		self.object:remove()
		return
	end
	self.object:set_armor_groups({immortal=1})
	self.entity_name=self.name
end

function wagon:get_staticdata()
	return advtrains.pcall(function()
		if not self:ensure_init() then return end
		atprint("[wagon "..((self.unique_id and self.unique_id~="" and self.unique_id) or "no-id").."]: saving to wagon_save")
		--serialize inventory, if it has one
		if self.has_inventory then
			local inv=minetest.get_inventory({type="detached", name="advtrains_wgn_"..self.unique_id})
			self.ser_inv=advtrains.serialize_inventory(inv)
		end
		--save to table before being unloaded
		advtrains.wagon_save[self.unique_id]=advtrains.merge_tables(self)
		advtrains.wagon_save[self.unique_id].entity_name=self.name
		advtrains.wagon_save[self.unique_id].name=nil
		advtrains.wagon_save[self.unique_id].object=nil
		return self.unique_id
	end)
end
--returns: uid of wagon
function wagon:init_new_instance(train_id, properties)
	self.unique_id=os.time()..os.clock()
	self.train_id=train_id
	for k,v in pairs(properties) do
		if k~="name" and k~="object" then
			self[k]=v
		end
	end
	self:init_shared()
	self.initialized=true
	atprint("init_new_instance "..self.unique_id.." ("..self.train_id..")")
	return self.unique_id
end
function wagon:init_from_wagon_save(uid)
	if not advtrains.wagon_save[uid] then
		self.object:remove()
		return
	end
	self.unique_id=uid
	for k,v in pairs(advtrains.wagon_save[uid]) do
		if k~="name" and k~="object" then
			self[k]=v
		end
	end
	if not self.train_id or not self:train() then
		self.object:remove()
		return
	end
	self:init_shared()
	self.initialized=true
	minetest.after(0.2, function() self:reattach_all() end)
	atprint("init_from_wagon_save "..self.unique_id.." ("..self.train_id..")")
end
function wagon:init_shared()
	if self.has_inventory then
		local uid_noptr=self.unique_id..""
		--to be used later
		local inv=minetest.create_detached_inventory("advtrains_wgn_"..self.unique_id, {
			allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
				return count
			end,
			allow_put = function(inv, listname, index, stack, player)
				return stack:get_count()
			end,
			allow_take = function(inv, listname, index, stack, player)
				return stack:get_count()
			end
		})
		if self.ser_inv then
			advtrains.deserialize_inventory(self.ser_inv, inv)
		end
		if self.inventory_list_sizes then
			for lst, siz in pairs(self.inventory_list_sizes) do
				inv:set_size(lst, siz)
			end
		end
	end
	if self.doors then
		self.door_anim_timer=0
		self.door_state=0
	end
	if self.custom_on_activate then
		self:custom_on_activate(dtime_s)
	end
	-- reset line and infotext cache to update object properties on first call
	self.line_cache=nil
	self.infotext_cache=nil
end
function wagon:ensure_init()
	if self.initialized then
		if self.noninitticks then self.noninitticks=nil end
		return true
	end
	if not self.noninitticks then self.noninitticks=0 end
	self.noninitticks=self.noninitticks+1
	if self.noninitticks>20 then
		self.object:remove()
	else
		self.object:setvelocity({x=0,y=0,z=0})
	end
	return false
end

-- Remove the wagon
function wagon:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
	return advtrains.pcall(function()
		if not self:ensure_init() then return end
		if not puncher or not puncher:is_player() then
			return
		end
		if self.owner and puncher:get_player_name()~=self.owner and (not minetest.check_player_privs(puncher, {train_remove = true })) then
		   minetest.chat_send_player(puncher:get_player_name(), attrans("This wagon is owned by @1, you can't destroy it.", self.owner));
		   return
		end
		
		if minetest.settings:get_bool("creative_mode") then
			if not self:destroy() then return end
			
			local inv = puncher:get_inventory()
			if not inv:contains_item("main", self.name) then
				inv:add_item("main", self.name)
			end
		else
			local pc=puncher:get_player_control()
			if not pc.sneak then
				minetest.chat_send_player(puncher:get_player_name(), attrans("Warning: If you destroy this wagon, you only get some steel back! If you are sure, hold Sneak and left-click the wagon."))
				return
			end

			if not self:destroy() then return end

			local inv = puncher:get_inventory()
			for _,item in ipairs(self.drops or {self.name}) do
				inv:add_item("main", item)
			end
		end
	end)
end
function wagon:destroy()
	--some rules:
	-- you get only some items back
	-- single left-click shows warning
	-- shift leftclick destroys
	-- not when a driver is inside
	
	for _,_ in pairs(self.seatp) do
		return
	end
	
	if self.custom_may_destroy then
		if not self.custom_may_destroy(self, puncher, time_from_last_punch, tool_capabilities, direction) then
			return
		end
	end
	if self.custom_on_destroy then
		self.custom_on_destroy(self, puncher, time_from_last_punch, tool_capabilities, direction)
	end
	
	atprint("[wagon "..((self.unique_id and self.unique_id~="" and self.unique_id) or "no-id").."]: destroying")
	
	self.object:remove()

	table.remove(self:train().trainparts, self.pos_in_trainparts)
	advtrains.update_trainpart_properties(self.train_id)
	advtrains.wagon_save[self.unique_id]=nil
	if self.discouple then self.discouple.object:remove() end--will have no effect on unloaded objects
	return true
end


function wagon:on_step(dtime)
	return advtrains.pcall(function()
		if not self:ensure_init() then return end
		
		local t=os.clock()
		local pos = self.object:getpos()
		
		if not pos then
			atprint("["..self.unique_id.."][fatal] missing position (object:getpos() returned nil)")
			return
		end

		self.entity_name=self.name
		
		--is my train still here
		if not self.train_id or not self:train() then
			atprint("[wagon "..self.unique_id.."] missing train_id, destroying")
			self.object:remove()
			return
		end
		if not self.seatp then
			self.seatp={}
		end
		if not self.seatpc then
			self.seatpc={}
		end
		
		--Legacy: remove infotext since it does not work this way anyways
		self.infotext=nil

		--custom on_step function
		if self.custom_on_step then
			self:custom_on_step(self, dtime)
		end

		--driver control
		for seatno, seat in ipairs(self.seats) do
			local driver=self.seatp[seatno] and minetest.get_player_by_name(self.seatp[seatno])
			local has_driverstand=seat.driving_ctrl_access and self.seatp[seatno] and minetest.check_player_privs(self.seatp[seatno], {train_operator=true})
			if has_driverstand and driver then
				advtrains.update_driver_hud(driver:get_player_name(), self:train(), self.wagon_flipped)
			elseif driver then
				--only show the inside text
				local inside=self:train().text_inside or ""
				advtrains.set_trainhud(driver:get_player_name(), inside)
			end
			if driver and driver:get_player_control_bits()~=self.seatpc[seatno] then
				local pc=driver:get_player_control()
				self.seatpc[seatno]=driver:get_player_control_bits()
				
				if has_driverstand then
					--regular driver stand controls
					advtrains.on_control_change(pc, self:train(), self.wagon_flipped)
				else
					-- If on a passenger seat and doors are open, get off when W or D pressed.
					local pass = self.seatp[seatno] and minetest.get_player_by_name(self.seatp[seatno])
					if pass and self:train().door_open~=0 then
					local pc=pass:get_player_control()
						if pc.up or pc.down then
							self:get_off(seatno)
						end
					end		      
				end
				if pc.aux1 and pc.sneak then
					self:get_off(seatno)
				end
			end
		end
		
		--check infotext
		local outside=self:train().text_outside or ""
		if self.infotext_cache~=outside  then
			self.object:set_properties({infotext=outside})
			self.infotext_cache=outside
		end
		
		local gp=self:train()
		local fct=self.wagon_flipped and -1 or 1
		--set line number
		if self.name == "advtrains:subway_wagon" and gp.line and gp.line~=self.line_cache then
			local new_line_tex="advtrains_subway_wagon.png^advtrains_subway_wagon_line"..gp.line..".png"
			self.object:set_properties({
				textures={new_line_tex},
		 	})
			self.line_cache=gp.line
		elseif self.line_cache~=nil and gp.line==nil then
			self.object:set_properties({
				textures=self.textures,
		 	})
			self.line_cache=nil
		end
		--door animation
		if self.doors then
			if (self.door_anim_timer or 0)<=0 then
				local dstate = (gp.door_open or 0) * fct
				if dstate ~= self.door_state then
					local at
					--meaning of the train.door_open field:
					-- -1: left doors (rel. to train orientation)
					--  0: closed
					--  1: right doors
					--this code produces the following behavior:
					-- if changed from 0 to +-1, play open anim. if changed from +-1 to 0, play close.
					-- if changed from +-1 to -+1, first close and set 0, then it will detect state change again and run open.
					if self.door_state == 0 then
						at=self.doors.open[dstate]
						self.object:set_animation(at.frames, at.speed or 15, at.blend or 0, false)
						self.door_state = dstate
					else
						at=self.doors.close[self.door_state or 1]--in case it has not been set yet
						self.object:set_animation(at.frames, at.speed or 15, at.blend or 0, false)
						self.door_state = 0
					end
					self.door_anim_timer = at.time
				end
			else
				self.door_anim_timer = (self.door_anim_timer or 0) - dtime
			end
		end
		
		--DisCouple
		if self.pos_in_trainparts and self.pos_in_trainparts>1 then
			if gp.velocity==0 and not self.lock_couples then
				if not self.discouple or not self.discouple.object:getyaw() then
					local object=minetest.add_entity(pos, "advtrains:discouple")
					if object then
						local le=object:get_luaentity()
						le.wagon=self
						--box is hidden when attached, so unuseful.
						--object:set_attach(self.object, "", {x=0, y=0, z=self.wagon_span*10}, {x=0, y=0, z=0})
						self.discouple=le
					else
						atprint("Couldn't spawn DisCouple")
					end
				end
			else
				if self.discouple and self.discouple.object:getyaw() then
					self.discouple.object:remove()
				end
			end
		end
		--for path to be available. if not, skip step
		if not gp.path then
			self.object:setvelocity({x=0, y=0, z=0})
			return
		end
		if not self.pos_in_train then
			--why ever. but better continue next step...
			advtrains.update_trainpart_properties(self.train_id)
			return
		end
		
		local index=advtrains.get_real_path_index(self:train(), self.pos_in_train)
		--atprint("trainindex "..gp.index.." wagonindex "..index)
		
		--automatic get_on
		--needs to know index and path
		if self.door_entry and gp.door_open and gp.door_open~=0 and gp.velocity==0 then
			--using the mapping created by the trainlogic globalstep
			for i, ino in ipairs(self.door_entry) do
				--fct is the flipstate flag from door animation above
				local aci = index + ino*fct
				local ix1=gp.path[math.floor(aci)]


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