hell/guide.lua

local cube = minetest.inventorycube

-- the content of the guide
local guide_infos = {
	{
		description = "Mushrooms",
		{"text", "Hell mushrooms can be found on the hell's ground and on hellrack soil, it can be dug by hand."},
		{"image", {1, 1, "riesenpilz_nether_shroom_side.png"}},
		{"y", 0.5},
		{"text", "If you drop it without holding the fast key, you can split it into its stem and head:"},
		{"image", {1, 1, "hell_shroom_top.png", 1}},
		{"image", {1, 1, "hell_shroom_stem.png"}},
		{"y", 0.5},
		{"text", "You can get more mushrooms by using a hellrack soil:"},
		{"text", "  1. search a dark place and, if necessary, place hellrack with air about it,"},
		{"text", "  2. right click with cooked blood onto the hellrack to make it soiled,"},
		{"text", "  3. right click onto the hellrack soil with a hell mushroom head to add some spores,"},
		{"text", "  4. dig the mushroom which grew after some time to make place for another one."},
		{"image", {1, 1, "riesenpilz_nether_shroom_side.png", 5.4}},
		{"y", 1},
		{"image", {1, 1, "hell_hellrack.png^hell_hellrack_soil.png", 1.8}},
		{"image", {1, 1, "hell_hotbed.png", 1.3, -0.832}},
		{"image", {1, 1, "hell_hellrack.png^hell_hellrack_soil.png", 3.6}},
		{"image", {1, 1, "hell_shroom_top.png", 3.1, -0.664}},
		{"image", {1, 1, "hell_hellrack.png^hell_hellrack_soil.png", 5.4}},
		{"image", {1, 1, "hell_hellrack.png"}},
		{"y", 0.5},
	},
	{
		description = "Tools",
		{"text", "You can craft 5 kinds of tools in the hell, which (except the mushroom pick) require sticks to be crafted:"},
		{"image", {1, 1, "hell_pick_mushroom.png"}},
		{"y", 0.1},
		{"text", "strength : 1"},
		{"text", "The mushroom pick needs mushroom stems and heads to be crafted."},
		{"image", {1, 1, "hell_pick_wood.png"}},
		{"y", 0.1},
		{"text", "strength : 2"},
		{"text", "The hell wood pick can be crafted with cooked hell blood wood."},
		{"image", {1, 1, "hell_axe_hellrack.png", 1.5}},
		{"image", {1, 1, "hell_shovel_hellrack.png", 3}},
		{"image", {1, 1, "hell_sword_hellrack.png", 4.5}},
		{"image", {1, 1, "hell_pick_hellrack.png"}},
		{"y", 0.1},
		{"text", "strength : 3"},
		{"text", "The red hellrack tools can be crafted with usual hellrack."},
		{"image", {1, 1, "hell_axe_hellrack_blue.png", 1.5}},
		{"image", {1, 1, "hell_shovel_hellrack_blue.png", 3}},
		{"image", {1, 1, "hell_sword_hellrack_blue.png", 4.5}},
		{"image", {1, 1, "hell_pick_hellrack_blue.png"}},
		{"y", 0.1},
		{"text", "strength : 3"},
		{"text", "The blue hellrack tools can be crafted with blue hellrack."},
		{"image", {1, 1, "hell_axe_white.png", 1.5}},
		{"image", {1, 1, "hell_shovel_white.png", 3}},
		{"image", {1, 1, "hell_sword_white.png", 4.5}},
		{"image", {1, 1, "hell_pick_white.png"}},
		{"y", 0.1},
		{"text", "strength : 3"},
		{"text", "The siwtonic tools can be crafted with the siwtonic ore."},
		{"y", 0.5},
	},
	{
		description = "Blood structures",
		{"text", "You can find blood structures on the ground and dig their nodes even with the bare hand."},
		{"text", "One contains 4 kinds of blocks:"},
		{"image", {1, 1, cube("hell_blood.png"), 1}},
		{"image", {1, 1,
			cube("hell_blood_top.png", "hell_blood.png^hell_blood_side.png", "hell_blood.png^hell_blood_side.png"),
			2}},
		{"image", {1, 1, "hell_fruit.png", 3}},
		{"image", {1, 1, cube("hell_blood_stem_top.png", "hell_blood_stem.png", "hell_blood_stem.png")}},
		{"y", 0.168},
		{"text", "Blood stem, blood, blood head and hell fruit."},
		{"text", "You can craft 4 blood wood with the stem:"},
		{"image", {1, 1, cube("hell_wood.png")}},
		{"y", 0.168},
		{"text", "The 4 blood nodes can be cooked and, except blood wood, their blood can be extracted."},
		{"y", 0.5},
	},
	{
		description = "Fruits",
		{"text", "You can find the hell fruits on blood structures and dig them even with the bare hand."},
		{"image", {1, 1, "hell_fruit.png"}},
		{"text", "Eating it will make you lose life but it might feed you and give you blood:"},
		{"image", {1, 1, "hell_blood_extracted.png"}},
		{"y", 0.168},
		{"text", "If you eat it at the right place inside a portal, you will teleport instead of getting blood."},
		{"y", 0.168},
		{"text", "If you drop it without holding the fast key, you can split it into its fruit and leaf:"},
		{"image", {1, 1, "hell_fruit_leaf.png", 1}},
		{"image", {1, 1, "hell_fruit_no_leaf.png"}},
		{"y", 0.168},
		{"text", "Craft a fruit leave block out of 9 fruit leaves and the fruit can be used to craft a hell pearl."},
		{"image", {1, 1, cube("hell_fruit_leaves.png")}},
		{"y", 0.168},
		{"text", "A fruit leaves block."},
	},
	{
		description = "Cooking",
		{"text", "To get a furnace you need to dig at least 8 hellrack bricks. They can be found at pyramid like constructions and require at least a strength 1 hell pick to be dug. To craft the furnace, use the hellrack bricks like cobble:"},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png"), 0.5}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png"), 1}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png")}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png"), 1}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png")}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png"), 0.5}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png"), 1}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png")}},
		{"y", 0.168},
		{"text", "To begin cooking stuff, you can use a mushroom or fruit. After that it's recommended to use cooked blood nodes."},
		{"text", "Some hell items can be cooked:"},
		{"image", {1, 1, cube("hell_blood_stem_top_cooked.png", "hell_blood_stem_cooked.png", "hell_blood_stem_cooked.png"), 0.35}},
		{"image", {1, 1, cube("hell_blood_cooked.png"), 1.6}},
		{"image", {1, 1,
			cube("hell_blood_top_cooked.png", "hell_blood_cooked.png^hell_blood_side_cooked.png", "hell_blood_cooked.png^hell_blood_side_cooked.png"),
			2.9}},
		{"image", {1, 1, cube("hell_wood_cooked.png"), 4.3}},
		{"y", 1.2},
		{"text", "Some cooked blood stem, cooked blood, cooked blood head and cooked blood wood."},
		{"image", {1, 1, "hell_hotbed.png", 0.3}},
		{"image", {1, 1, "hell_pearl.png", 2}},
		{"y", 1.168},
		{"text", "Some cooked extracted blood and a hell pearl."},
		{"y", 0.5},
	},
	{
		description = "Extractors",
		{"text", "Here you can find out information about the hell extractor."},
		{"text", "Here you can see its craft recipe:"},
		{"image", {0.5, 0.5, cube("hell_blood_top_cooked.png", "hell_blood_cooked.png^hell_blood_side_cooked.png", "hell_blood_cooked.png^hell_blood_side_cooked.png"), 0.5}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png"), 1}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png")}},
		{"image", {0.5, 0.5, cube("hell_blood_extractor.png"), 2.5}},
		{"image", {0.5, 0.5, "hell_shroom_stem.png", 0.5}},
		{"image", {0.5, 0.5, cube("hell_blood_cooked.png"), 1}},
		{"image", {0.5, 0.5, cube("hell_blood_cooked.png")}},
		{"image", {0.5, 0.5, cube("hell_blood_stem_top_cooked.png", "hell_blood_stem_cooked.png", "hell_blood_stem_cooked.png"), 0.5}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png"), 1}},
		{"image", {0.5, 0.5, cube("hell_hellrack_brick.png")}},
		{"y", 0.2},
		{"text", "Extract blood from the blood nodes you get from the blood structures. You can also get blood with a hell fruit."},
		{"text", "So you can use it:"},
		{"text", "  1. place it somewhere,"},
		{"text", "  2. place blood blocks next to it (4 or less),"},
		{"text", "  3. right click with extracted blood onto it to power it,"},
		{"text", "  4. take the new extracted blood and dig the extracted nodes."},
		{"text", "Example (view from the top):"},
		{"y", 0.88},
		{"image", {1, 1, "hell_blood_stem_top.png", 0.82, -0.88}},
		{"image", {1, 1, "hell_blood.png", 1.63}},
		{"image", {1, 1, "hell_blood_extractor.png", 0.82}},
		{"image", {1, 1, "hell_blood_stem_top_empty.png", 3.82, -0.88}},
		{"image", {1, 1, "hell_blood_empty.png", 4.63}},
		{"image", {1, 1, "hell_blood_empty.png", 3.001}},
		{"image", {1, 1, "hell_blood_extractor.png", 3.82}},
		{"image", {1, 1, "hell_blood.png"}},
		{"image", {1, 1, "hell_blood.png", 0.82, -0.12}},
		{"image", {1, 1, "hell_blood_empty.png", 3.82, -0.12}},
		{"y", 1.168},
		{"text", "The empty blood stem can be crafted into empty hell wood, which can be crafted into hell sticks."},
		{"y", 0.5},
	},
	{
		description = "Ores",
		{"text", "You can find 5 types of ores:"},
		{"image", {1, 1, cube("hell_hellrack_black.png"), 4}},
		{"image", {1, 1, cube("hell_hellrack.png")}},
		{"y", 0.168},
		{"text", "The red hellrack is generated like stone. The black hellrack is generated like gravel. Both require at least a strength 2 hell pick to be dug."},
		{"image", {1, 1, cube("hell_white.png"), 4}},
		{"image", {1, 1, cube("hell_hellrack_blue.png")}},
		{"y", 0.168},
		{"text", "The blue hellrack is generated like diamond ore. The siwtonic ore is generated like mese blocks. Both require at least a strength 3 hell pick to be dug."},
		{"image", {1, 1, cube("hell_hellrack_tiled.png"), 4}},
		{"image", {1, 1, cube("glow_stone.png")}},
		{"y", 0.168},
		{"text", "Glow stone can be used for lighting. Tiled hellrack is generated like coal ore. Glow stone requires at least a strength 1 pick to be dug. Dig tiled hellrack with at least a level 2 pickaxe."},
		{"y", 0.5},
	},
	{
		description = "Vines",
		{"text", "Feed hell vines with blood. Dig them with anything."},
		{"image", {1, 1, "hell_vine.png"}},
		{"text", "Grow hell child by placing it to a dark place onto a blood structure head node."},
		{"image", {1, 1, "hell_sapling.png"}},
		{"y", -0.10},
		{"image", {1, 1, "hell_blood.png^hell_blood_side.png"}},
	},
	{
		description = "Pearls",
		{"text", "The hell pearl can be used to teleport by throwing it. Here is how to get one:"},
		{"text", "First of all craft 2 mushroom heads and 1 hell fruit without leaf together:"},
		{"image", {1, 1, "hell_shroom_top.png"}},
		{"image", {1, 1, "hell_fim.png", 3}},
		{"image", {1, 1, "hell_fruit_no_leaf.png"}},
		{"image", {1, 1, "hell_shroom_top.png"}},
		{"y", 0.168},
		{"text", "Put the result into the furnace to cook it into a hell pearl:"},
		{"image", {1, 1, "hell_pearl.png"}},
	},
	{
		description = "Bricks",
		{"text", "Craft bricks out of red, black and blue hellrack."},
		{"image", {1, 1, cube("hell_hellrack_brick_black.png"), 1}},
		{"image", {1, 1, cube("hell_hellrack_brick_blue.png"), 2}},
		{"image", {1, 1, cube("hell_hellrack_brick.png")}},
		{"y", 0.168},
		{"text", "Dig them with at least a level 1 pickaxe."},
		{"y", 0.5},
	},
	{
		description = "Portals",
		{"text", "Here you can find out how to build the hell portal."},
		{"text", "A hell portal requires following nodes:"},
		{"text", "  - 25 empty hell wooden planks,"},
		{"text", "  - 16 black hellrack,"},
		{"text", "  - 12 blue hellrack bricks,"},
		{"text", "  - 8 red hellrack,"},
		{"text", "  - 8 cooked hell blood,"},
		{"text", "  - 4 hell fruits,"},
		{"text", "  - 2 siwtonic blocks."},
		{"text", "It should look approximately like this one:"},
		{"image", {5.625, 6, "hell_teleporter.png", 5, -0.5}},
		{"y", 6},
		{"text", "Activate it by standing in the middle, on the siwtonic block and eating a hell fruit. Take enough stuff with you to build a portal when you'll come back."},
		{"y", 0.5},
	},
	{
		description = "Forests",
		{"text", "The hell forest is generated in caves, above the usual hell."},
		{"text", "There you can find some plants:"},
		{"image", {1, 1, "hell_grass_middle.png", 1}},
		{"image", {1, 1, "hell_grass_big.png", 2}},
		{"image", {1, 1, "hell_grass_small.png"}},
		{"y", 0.168},
		{"text", "Use the hell forest grass to get paper. Craft paper out of the dried grass."},
		{"image", {1, 1, cube("hell_tree_top.png", "hell_tree.png", "hell_tree.png")}},
		{"y", 0.168},
		{"text", "Hell trunks can be found at hell trees. Craft hell wood out of hell trunk."},
		{"image", {1, 1, "hell_glowflower.png"}},
		{"y", 0.168},
		{"text", "Use it for lighting and decoration."},
	},
}

-- the size of guide pages
local guide_size = {x=12, y=3, cx=0.2, cy=0.25}

-- informations about settings and ...
local formspec_offset = {x=0.375, y=0.375}
local font_size
if minetest.is_singleplayer() then
	font_size = tonumber(minetest.settings:get("font_size")) or 13
else
	font_size = 13
end
guide_size.fx = math.floor(((guide_size.x-1) * (guide_size.cx+formspec_offset.x)) * font_size)
guide_size.fy = font_size/40

-- the default guide formspecs
local guide_forms = {
	contents = "size[3.6,"..(#guide_infos)-2 ..";]label["..guide_size.cx+0.7 ..","..guide_size.cy ..";Contents:]",
}

-- change the infos to formspecs
for n,data in ipairs(guide_infos) do
	local form = ""
	local y = 0
	local x = guide_size.cx
	for _,i in ipairs(data) do
		local typ, content = unpack(i)
		if typ == "y" then
			y = y+content
		elseif typ == "x" then
			x = math.max(x, content)
		elseif typ == "text" then
			local tab = minetest.wrap_text(content, guide_size.fx, true)
			local l = guide_size.cx
			for _,str in ipairs(tab) do
				form = form.."label["..formspec_offset.x ..","..formspec_offset.y+y..";"..str.."]"
				y = y+guide_size.fy
				l = math.max(l, #str)
			end
			x = math.max(x, l/font_size)
		elseif typ == "image" then
			local w, h, texture_name, px, py = unpack(content)
			if not px then
				form = form.."image["..formspec_offset.x..","..formspec_offset.y+y ..";"..w..","..h..";"..texture_name.."]"
				y = y+h
			else
				px = formspec_offset.x+px
				py = py or 0
				form = form.."image["..px..","..
					formspec_offset.y+y+py ..";"..w..","..h..";"..texture_name.."]"
				x = math.max(x, px+w)
			end
		end
	end
	form = "size["..guide_size.x..","..y+1 ..";]real_coordinates[true]"..form.."button["..guide_size.x/2-0.6 ..","..y ..";1.2,0.8;quit;Back]"
	guide_forms[n] = {data.description, form}
end

local desc_tab = {}
for n,i in ipairs(guide_forms) do
	desc_tab[i[1]] = n
end

-- creates contents formspec
local y = 0
for y,i in ipairs(guide_forms) do
	local desc, form = unpack(i)
	local s = #desc*1.3/font_size+1.5
	guide_forms.contents = guide_forms.contents.."button["..guide_size.cx*12/s-0.5 ..","..guide_size.cy+y/1.3 ..";"..s..",1;name;"..desc.."]"
end

-- shows the contents of the formspec
local function show_guide(pname)
	minetest.show_formspec(pname, "hell_guide_contents", guide_forms["contents"])
end

minetest.register_on_player_receive_fields(function(player, formname, fields)
	if formname == "hell_guide_contents" then
		local fname = fields.name
		local pname = player:get_player_name()
		if fname
		and pname then
			minetest.show_formspec(pname, "hell_guide", guide_forms[desc_tab[fname]][2])
		end
	elseif formname == "hell_guide" then
		local fname = fields.quit
		local pname = player:get_player_name()
		if fname
		and pname then
			minetest.show_formspec(pname, "hell_guide_contents", guide_forms["contents"])
		end
	end
end)

minetest.register_chatcommand("hell_help", {
	params = "",
	description = "Shows a hell guide",
	func = function(name)
		local player = minetest.get_player_by_name(name)
		if not player then
			minetest.chat_send_player(name, "Something went wrong.")
			return false
		end
		if player:getpos().y > hell.start then
			minetest.chat_send_player(name, "Usually you don't neet this guide here. You can view it in the hell.")
			return false
		end
		minetest.chat_send_player(name, "Showing guide...")
		show_guide(name)
		return true
	end
})