copy all standard Dreambuilder mods in from the old subgame

(exactly as last supplied there, updates to these mods will follow later)

1 files changed, 286 insertions, 0 deletions

diff --git a/pipeworks/item_transport.lua b/pipeworks/item_transport.lua
new file mode 100644
index 0000000..e38125d
--- /dev/null
+++ b/pipeworks/item_transport.lua
@@ -0,0 +1,286 @@
+function pipeworks.tube_item(pos, item)
+	error("obsolete pipeworks.tube_item() called; change caller to use pipeworks.tube_inject_item() instead")
+end
+
+function pipeworks.tube_inject_item(pos, start_pos, velocity, item)
+	-- Take item in any format
+	local stack = ItemStack(item)
+	local obj = luaentity.add_entity(pos, "pipeworks:tubed_item")
+	obj:set_item(stack:to_string())
+	obj.start_pos = vector.new(start_pos)
+	obj:setvelocity(velocity)
+	--obj:set_color("red") -- todo: this is test-only code
+	return obj
+end
+
+-- adding two tube functions
+-- can_remove(pos,node,stack,dir) returns the maximum number of items of that stack that can be removed
+-- remove_items(pos,node,stack,dir,count) removes count items and returns them
+-- both optional w/ sensible defaults and fallback to normal allow_* function
+-- XXX: possibly change insert_object to insert_item
+
+local adjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}}
+
+function pipeworks.notvel(tbl, vel)
+	local tbl2={}
+	for _,val in ipairs(tbl) do
+		if val.x ~= -vel.x or val.y ~= -vel.y or val.z ~= -vel.z then table.insert(tbl2, val) end
+	end
+	return tbl2
+end
+
+local function go_next(pos, velocity, stack)
+	local next_positions = {}
+	local max_priority = 0
+	local cnode = minetest.get_node(pos)
+	local cmeta = minetest.get_meta(pos)
+	local can_go
+	local speed = math.abs(velocity.x + velocity.y + velocity.z)
+	if speed == 0 then
+		speed = 1
+	end
+	local vel = {x = velocity.x/speed, y = velocity.y/speed, z = velocity.z/speed,speed=speed}
+	if speed >= 4.1 then
+		speed = 4
+	elseif speed >= 1.1 then
+		speed = speed - 0.1
+	else
+		speed = 1
+	end
+	vel.speed = speed
+	if minetest.registered_nodes[cnode.name] and minetest.registered_nodes[cnode.name].tube and minetest.registered_nodes[cnode.name].tube.can_go then
+		can_go = minetest.registered_nodes[cnode.name].tube.can_go(pos, cnode, vel, stack)
+	else
+		can_go = pipeworks.notvel(adjlist, vel)
+	end
+	for _, vect in ipairs(can_go) do
+		local npos = vector.add(pos, vect)
+		minetest.load_position(npos)
+		local node = minetest.get_node(npos)
+		local reg_node = minetest.registered_nodes[node.name]
+		if reg_node then
+			local tube_def = reg_node.tube
+			local tubedevice = minetest.get_item_group(node.name, "tubedevice")
+			local tube_priority = (tube_def and tube_def.priority) or 100
+			if tubedevice > 0 and tube_priority >= max_priority then
+				if not tube_def or not tube_def.can_insert or
+						tube_def.can_insert(npos, node, stack, vect) then
+					if tube_priority > max_priority then
+						max_priority = tube_priority
+						next_positions = {}
+					end
+					next_positions[#next_positions + 1] = {pos = npos, vect = vect}
+				end
+			end
+		end
+	end
+
+	if not next_positions[1] then
+		return false, nil
+	end
+
+	local n = (cmeta:get_int("tubedir") % (#next_positions)) + 1
+	if pipeworks.enable_cyclic_mode then
+		cmeta:set_int("tubedir", n)
+	end
+	local new_velocity = vector.multiply(next_positions[n].vect, vel.speed)
+	return true, new_velocity
+end
+
+minetest.register_entity("pipeworks:tubed_item", {
+	initial_properties = {
+		hp_max = 1,
+		physical = false,
+		collisionbox = {0.1, 0.1, 0.1, 0.1, 0.1, 0.1},
+		visual = "wielditem",
+		visual_size = {x = 0.15, y = 0.15},
+		textures = {""},
+		spritediv = {x = 1, y = 1},
+		initial_sprite_basepos = {x = 0, y = 0},
+		is_visible = false,
+	},
+
+	physical_state = false,
+
+	from_data = function(self, itemstring)
+		local stack = ItemStack(itemstring)
+		local itemtable = stack:to_table()
+		local itemname = nil
+		if itemtable then
+			itemname = stack:to_table().name
+		end
+		local item_texture = nil
+		local item_type = ""
+		if minetest.registered_items[itemname] then
+			item_texture = minetest.registered_items[itemname].inventory_image
+			item_type = minetest.registered_items[itemname].type
+		end
+		self.object:set_properties({
+			is_visible = true,
+			textures = {stack:get_name()}
+		})
+		local def = stack:get_definition()
+		self.object:setyaw((def and def.type == "node") and 0 or math.pi * 0.25)
+	end,
+
+	get_staticdata = luaentity.get_staticdata,
+	on_activate = function(self, staticdata) -- Legacy code, should be replaced later by luaentity.on_activate
+		if staticdata == "" or staticdata == nil then
+			return
+		end
+		if staticdata == "toremove" then
+			self.object:remove()
+			return
+		end
+		local item = minetest.deserialize(staticdata)
+		pipeworks.tube_inject_item(self.object:getpos(), item.start_pos, item.velocity, item.itemstring)
+		self.object:remove()
+	end,
+})
+
+minetest.register_entity("pipeworks:color_entity", {
+	initial_properties = {
+		hp_max = 1,
+		physical = false,
+		collisionbox = {0.1, 0.1, 0.1, 0.1, 0.1, 0.1},
+		visual = "cube",
+		visual_size = {x = 3.5, y = 3.5, z = 3.5}, -- todo: find correct size
+		textures = {""},
+		is_visible = false,
+	},
+
+	physical_state = false,
+
+	from_data = function(self, color)
+		local t = "pipeworks_color_"..color..".png"
+		local prop = {
+			is_visible = true,
+			visual = "cube",
+			textures = {t, t, t, t, t, t} -- todo: textures
+		}
+		self.object:set_properties(prop)
+	end,
+
+	get_staticdata = luaentity.get_staticdata,
+	on_activate = luaentity.on_activate,
+})
+
+luaentity.register_entity("pipeworks:tubed_item", {
+	itemstring = '',
+	item_entity = nil,
+	color_entity = nil,
+	color = nil,
+	start_pos = nil,
+
+	set_item = function(self, item)
+		local itemstring = ItemStack(item):to_string() -- Accept any input format
+		if self.itemstring == itemstring then
+			return
+		end
+		if self.item_entity then
+			self:remove_attached_entity(self.item_entity)
+		end
+		self.itemstring = itemstring
+		self.item_entity = self:add_attached_entity("pipeworks:tubed_item", itemstring)
+	end,
+
+	set_color = function(self, color)
+		if self.color == color then
+			return
+		end
+		self.color = color
+		if self.color_entity then
+			self:remove_attached_entity(self.color_entity)
+		end
+		if color then
+			self.color_entity = self:add_attached_entity("pipeworks:color_entity", color)
+		else
+			self.color_entity = nil
+		end
+	end,
+
+	on_step = function(self, dtime)
+		if self.start_pos == nil then
+			local pos = self:getpos()
+			self.start_pos = vector.round(pos)
+			self:setpos(pos)
+		end
+
+		local pos = self:getpos()
+		local stack = ItemStack(self.itemstring)
+		local drop_pos
+
+		local velocity = self:getvelocity()
+
+		local moved = false
+		local speed = math.abs(velocity.x + velocity.y + velocity.z)
+		if speed == 0 then
+			speed = 1
+			moved = true
+		end
+		local vel = {x = velocity.x / speed, y = velocity.y / speed, z = velocity.z / speed, speed = speed}
+
+		if vector.distance(pos, self.start_pos) >= 1 then
+			self.start_pos = vector.add(self.start_pos, vel)
+			moved = true
+		end
+
+		minetest.load_position(self.start_pos)
+		local node = minetest.get_node(self.start_pos)
+		if moved and minetest.get_item_group(node.name, "tubedevice_receiver") == 1 then
+			local leftover
+			if minetest.registered_nodes[node.name].tube and minetest.registered_nodes[node.name].tube.insert_object then
+				leftover = minetest.registered_nodes[node.name].tube.insert_object(self.start_pos, node, stack, vel)
+			else
+				leftover = stack
+			end
+			if leftover:is_empty() then
+				self:remove()
+				return
+			end
+			velocity = vector.multiply(velocity, -1)
+			self:setvelocity(velocity)
+			self:set_item(leftover:to_string())
+			return
+		end
+
+		if moved then
+			local found_next, new_velocity = go_next(self.start_pos, velocity, stack) -- todo: color
+			if not found_next then
+				drop_pos = minetest.find_node_near(vector.add(self.start_pos, velocity), 1, "air")
+				if drop_pos then
+					minetest.item_drop(stack, nil, drop_pos)
+					self:remove()
+					return
+				end
+			end
+
+			if new_velocity and not vector.equals(velocity, new_velocity) then
+				self:setpos(self.start_pos)
+				self:setvelocity(new_velocity)
+			end
+		end
+	end
+})
+
+if minetest.get_modpath("mesecons_mvps") then
+	mesecon.register_mvps_unmov("pipeworks:tubed_item")
+	mesecon.register_mvps_unmov("pipeworks:color_entity")
+	mesecon.register_on_mvps_move(function(moved_nodes)
+		local moved = {}
+		for _, n in ipairs(moved_nodes) do
+			moved[minetest.hash_node_position(n.oldpos)] = vector.subtract(n.pos, n.oldpos)
+		end
+		for id, entity in pairs(luaentity.entities) do
+			if entity.name == "pipeworks:tubed_item" then
+				local pos = entity:getpos()
+				local rpos = vector.round(pos)
+				local dir = moved[minetest.hash_node_position(rpos)]
+				if dir then
+					entity:setpos(vector.add(pos, dir))
+					entity.start_pos = vector.add(entity.start_pos, dir)
+				end
+			end
+		end
+	end)
+end