Replacement for Minimal Development Test (PR) (#9450)

games/minimal/LICENSE.txt

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+License information for Developer Test
+--------------------------------------
+
+The same license as for Minetest applies.

games/minimal/README.md

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+# Minimal development test
+
+This is a basic testing environment that contains a bunch of things to test the engine, but it could also be used as a minimal testbed for testing out mods.
+
+## Features
+
+* Basic nodes for mapgen
+* Basic, minimal map generator
+* Lots of example nodes for testing drawtypes, param2, light level, and many other node properties
+* Example entities
+* Other example items
+* Formspec test (via `/test_formspec` command)
+* Automated unit tests (disabled by default)
+* Tools for manipulating nodes and entities, like the "Param2 Tool"
+
+## Getting started
+
+Basically, just create a world and start. A few important things to note:
+
+* Items are gotten from the “Chest of Everything” (`chest_of_everything:chest`)
+* When you lost your initial items, type in `/stuff` command to get them back
+* By default, Creative Mode activates infinite node placement. This behavior can be changed with the `devtest_infplace` setting
+* Use the `/infplace` command to toggle infinite node placement in-game
+* Use the Param2 Tool to change the param2 of nodes; it's useful to experiment with the various drawtype test nodes
+* Check out the game settings and server commands for additional tests and features
+* Creative Mode does nothing (apart from default engine behavior)
+
+Confused by a certain node or item? Check out for inline code comments.
+
+### Example tests
+
+* You can use this to test what happens if a player is simultaneously in 2 nodes with `damage_per_second` but with a different value.
+* Or use the Falling Node Tool on various test nodes to see how they behave when falling.
+* You could also use this as a testbed for dependency-free mods, e.g. to test out how your formspecs behave without theming.
+
+## Random notes
+
+* Experimental/strange/unstructured tests can be found in the `experimental` mod
+* Textures of drawtype test nodes have a red dot at the top left corner. This is to see whether the textures are oriented properly
+
+## Design philosophy
+
+This should loosely follow the following principles:
+
+* Engine testing: The main focus of this is to aid testing of *engine* features, such as mapgen or node drawtypes
+* Mod testing: The secondary focus is to help modders as well, either as a minimal testbed for mods or even as a code example
+* Minimal interference: Under default settings, it shall not interfere with APIs except on explicit user wish. Non-trivial tests and features need to be enabled by a setting first
+* Convenience: Have various tools to make usage easier and more convenient
+* Reproducing engine bugs: When an engine bug was found, consider creating a test case
+* Clarity: Textures and names need to be designed to keep different things clearly visually apart at a glance
+* Low loading time: It must load blazing-fast so stuff can be tested quickly
+

games/minimal/game.conf

@@ -1,2 +1,2 @@
 name = Minimal development test
-
+description = Testing environment to help with testing the engine features of Minetest. It can also be helpful in mod development.

games/minimal/mods/basenodes/init.lua

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+local WATER_ALPHA = 160
+local WATER_VISC = 1
+local LAVA_VISC = 7
+
+--
+-- Node definitions
+--
+
+-- Register nodes
+
+minetest.register_node("basenodes:stone", {
+	description = "Stone",
+	tiles = {"default_stone.png"},
+	groups = {cracky=3},
+})
+
+minetest.register_node("basenodes:desert_stone", {
+	description = "Desert Stone",
+	tiles = {"default_desert_stone.png"},
+	groups = {cracky=3},
+})
+
+minetest.register_node("basenodes:dirt_with_grass", {
+	description = "Dirt with Grass",
+	tiles ={"default_grass.png",
+		-- a little dot on the bottom to distinguish it from dirt
+		"default_dirt.png^basenodes_dirt_with_grass_bottom.png",
+		{name = "default_dirt.png^default_grass_side.png",
+		tileable_vertical = false}},
+	groups = {crumbly=3, soil=1},
+})
+
+minetest.register_node("basenodes:dirt_with_snow", {
+	description = "Dirt with Snow",
+	tiles ={"basenodes_dirt_with_snow.png",
+		-- a little dot on the bottom to distinguish it from dirt
+		"default_dirt.png^basenodes_dirt_with_snow_bottom.png",
+		{name = "default_dirt.png^default_snow_side.png",
+		tileable_vertical = false}},
+	groups = {crumbly=3, soil=1},
+})
+
+minetest.register_node("basenodes:dirt", {
+	description = "Dirt",
+	tiles ={"default_dirt.png"},
+	groups = {crumbly=3, soil=1},
+})
+
+minetest.register_node("basenodes:sand", {
+	description = "Sand",
+	tiles ={"default_sand.png"},
+	groups = {crumbly=3},
+})
+
+minetest.register_node("basenodes:desert_sand", {
+	description = "Desert Sand",
+	tiles ={"default_desert_sand.png"},
+	groups = {crumbly=3},
+})
+
+minetest.register_node("basenodes:gravel", {
+	description = "Gravel",
+	tiles ={"default_gravel.png"},
+	groups = {crumbly=2},
+})
+
+minetest.register_node("basenodes:junglegrass", {
+	description = "Jungle Grass",
+	drawtype = "plantlike",
+	tiles ={"default_junglegrass.png"},
+	inventory_image = "default_junglegrass.png",
+	wield_image = "default_junglegrass.png",
+	paramtype = "light",
+	walkable = false,
+	groups = {snappy=3},
+})
+
+minetest.register_node("basenodes:tree", {
+	description = "Normal Tree Trunk",
+	tiles = {"default_tree_top.png", "default_tree_top.png", "default_tree.png"},
+	is_ground_content = false,
+	groups = {choppy=2,oddly_breakable_by_hand=1},
+})
+
+minetest.register_node("basenodes:leaves", {
+	description = "Normal Leaves",
+	drawtype = "allfaces_optional",
+	tiles = {"default_leaves.png"},
+	paramtype = "light",
+	is_ground_content = false,
+	groups = {snappy=3},
+})
+
+minetest.register_node("basenodes:jungletree", {
+	description = "Jungle Tree Trunk",
+	tiles = {"default_jungletree_top.png", "default_jungletree_top.png", "default_jungletree.png"},
+	is_ground_content = false,
+	groups = {choppy=2,oddly_breakable_by_hand=1},
+})
+
+minetest.register_node("basenodes:jungleleaves", {
+	description = "Jungle Leaves",
+	drawtype = "allfaces_optional",
+	tiles = {"default_jungleleaves.png"},
+	paramtype = "light",
+	is_ground_content = false,
+	groups = {snappy=3},
+})
+
+minetest.register_node("basenodes:pine_tree", {
+	description = "Pine Tree Trunk",
+	tiles = {"default_pine_tree_top.png", "default_pine_tree_top.png", "default_pine_tree.png"},
+	is_ground_content = false,
+	groups = {choppy=2,oddly_breakable_by_hand=1},
+})
+
+minetest.register_node("basenodes:pine_needles", {
+	description = "Pine Needles",
+	drawtype = "allfaces_optional",
+	tiles = {"default_pine_needles.png"},
+	paramtype = "light",
+	is_ground_content = false,
+	groups = {snappy=3},
+})
+
+minetest.register_node("basenodes:water_source", {
+	description = "Water Source",
+	drawtype = "liquid",
+	tiles = {"default_water.png"},
+	special_tiles = {
+		{name = "default_water.png", backface_culling = false},
+		{name = "default_water.png", backface_culling = true},
+	},
+	alpha = WATER_ALPHA,
+	paramtype = "light",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drowning = 1,
+	liquidtype = "source",
+	liquid_alternative_flowing = "basenodes:water_flowing",
+	liquid_alternative_source = "basenodes:water_source",
+	liquid_viscosity = WATER_VISC,
+	post_effect_color = {a = 64, r = 100, g = 100, b = 200},
+	groups = {water = 3, liquid = 3},
+})
+
+minetest.register_node("basenodes:water_flowing", {
+	description = "Flowing Water",
+	drawtype = "flowingliquid",
+	tiles = {"default_water_flowing.png"},
+	special_tiles = {
+		{name = "default_water_flowing.png", backface_culling = false},
+		{name = "default_water_flowing.png", backface_culling = false},
+	},
+	alpha = WATER_ALPHA,
+	paramtype = "light",
+	paramtype2 = "flowingliquid",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drowning = 1,
+	liquidtype = "flowing",
+	liquid_alternative_flowing = "basenodes:water_flowing",
+	liquid_alternative_source = "basenodes:water_source",
+	liquid_viscosity = WATER_VISC,
+	post_effect_color = {a = 64, r = 100, g = 100, b = 200},
+	groups = {water = 3, liquid = 3},
+})
+
+minetest.register_node("basenodes:river_water_source", {
+	description = "River Water Source",
+	drawtype = "liquid",
+	tiles = { "default_river_water.png" },
+	special_tiles = {
+		{name = "default_river_water.png", backface_culling = false},
+		{name = "default_river_water.png", backface_culling = true},
+	},
+	alpha = WATER_ALPHA,
+	paramtype = "light",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drowning = 1,
+	liquidtype = "source",
+	liquid_alternative_flowing = "basenodes:river_water_flowing",
+	liquid_alternative_source = "basenodes:river_water_source",
+	liquid_viscosity = 1,
+	liquid_renewable = false,
+	liquid_range = 2,
+	post_effect_color = {a = 103, r = 30, g = 76, b = 90},
+	groups = {water = 3, liquid = 3, },
+})
+
+minetest.register_node("basenodes:river_water_flowing", {
+	description = "Flowing River Water",
+	drawtype = "flowingliquid",
+	tiles = {"default_river_water_flowing.png"},
+	special_tiles = {
+		{name = "default_river_water_flowing.png", backface_culling = false},
+		{name = "default_river_water_flowing.png", backface_culling = false},
+	},
+	alpha = WATER_ALPHA,
+	paramtype = "light",
+	paramtype2 = "flowingliquid",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drowning = 1,
+	liquidtype = "flowing",
+	liquid_alternative_flowing = "basenodes:river_water_flowing",
+	liquid_alternative_source = "basenodes:river_water_source",
+	liquid_viscosity = 1,
+	liquid_renewable = false,
+	liquid_range = 2,
+	post_effect_color = {a = 103, r = 30, g = 76, b = 90},
+	groups = {water = 3, liquid = 3, },
+})
+
+minetest.register_node("basenodes:lava_flowing", {
+	description = "Flowing Lava",
+	drawtype = "flowingliquid",
+	tiles = {"default_lava_flowing.png"},
+	special_tiles = {
+		{name="default_lava_flowing.png", backface_culling = false},
+		{name="default_lava_flowing.png", backface_culling = false},
+	},
+	paramtype = "light",
+	light_source = minetest.LIGHT_MAX,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drowning = 1,
+	damage_per_second = 4,
+	liquidtype = "flowing",
+	liquid_alternative_flowing = "basenodes:lava_flowing",
+	liquid_alternative_source = "basenodes:lava_source",
+	liquid_viscosity = LAVA_VISC,
+	post_effect_color = {a=192, r=255, g=64, b=0},
+	groups = {lava=3, liquid=1},
+})
+
+minetest.register_node("basenodes:lava_source", {
+	description = "Lava Source",
+	drawtype = "liquid",
+	tiles = { "default_lava.png" },
+	special_tiles = {
+		{name = "default_lava.png", backface_culling = false},
+		{name = "default_lava.png", backface_culling = true},
+	},
+	paramtype = "light",
+	light_source = minetest.LIGHT_MAX,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drowning = 1,
+	damage_per_second = 4,
+	liquidtype = "source",
+	liquid_alternative_flowing = "basenodes:lava_flowing",
+	liquid_alternative_source = "basenodes:lava_source",
+	liquid_viscosity = LAVA_VISC,
+	post_effect_color = {a=192, r=255, g=64, b=0},
+	groups = {lava=3, liquid=1},
+})
+
+minetest.register_node("basenodes:cobble", {
+	description = "Cobblestone",
+	tiles ={"default_cobble.png"},
+	is_ground_content = false,
+	groups = {cracky=3},
+})
+
+minetest.register_node("basenodes:mossycobble", {
+	description = "Mossy Cobblestone",
+	tiles ={"default_mossycobble.png"},
+	is_ground_content = false,
+	groups = {cracky=3},
+})
+
+minetest.register_node("basenodes:apple", {
+	description = "Apple",
+	drawtype = "plantlike",
+	tiles ={"default_apple.png"},
+	inventory_image = "default_apple.png",
+	paramtype = "light",
+	is_ground_content = false,
+	sunlight_propagates = true,
+	walkable = false,
+	groups = {dig_immediate=3},
+
+	-- Make eatable because why not?
+	on_use = minetest.item_eat(2),
+})
+
+minetest.register_node("basenodes:ice", {
+	description = "Ice",
+	tiles ={"default_ice.png"},
+	groups = {cracky=3},
+})
+
+-- The snow nodes intentionally have different tints to make them more
+-- distinguishable
+minetest.register_node("basenodes:snow", {
+	description = "Snow Sheet",
+	tiles = {"basenodes_snow_sheet.png"},
+	groups = {crumbly=3},
+	walkable = false,
+	paramtype = "light",
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {-0.5, -0.5, -0.5, 0.5, -0.25, 0.5},
+	},
+})
+
+minetest.register_node("basenodes:snowblock", {
+	description = "Snow Block",
+	tiles ={"default_snow.png"},
+	groups = {crumbly=3},
+})
+
+

games/minimal/mods/basenodes/mod.conf

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+name = basenodes
+description = Contains basic nodes for mapgen

games/minimal/mods/basetools/init.lua

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+--
+-- Tool definitions
+--
+
+--[[ TOOLS SUMMARY:
+
+Tool types:
+
+* Hand: basic tool/weapon (just for convenience, not optimized for testing)
+* Pickaxe: dig cracky
+* Axe: dig choppy
+* Shovel: dig crumbly
+* Shears: dig snappy
+* Sword: deal damage
+* Dagger: deal damage, but faster
+
+Tool materials:
+
+* Dirt: dig nodes of rating 3, one use only
+* Wood: dig nodes of rating 3
+* Stone: dig nodes of rating 3 or 2
+* Steel: dig nodes of rating 3, 2 or 1
+* Mese: dig "everything" instantly
+]]
+
+-- The hand
+minetest.register_item(":", {
+	type = "none",
+	wield_image = "wieldhand.png",
+	wield_scale = {x=1,y=1,z=2.5},
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		max_drop_level = 0,
+		groupcaps = {
+			crumbly = {times={[3]=1.50}, uses=0, maxlevel=0},
+			snappy = {times={[3]=1.50}, uses=0, maxlevel=0},
+			oddly_breakable_by_hand = {times={[1]=7.00,[2]=4.00,[3]=2.00}, uses=0, maxlevel=0},
+		},
+		damage_groups = {fleshy=1},
+	}
+})
+
+-- Mese Pickaxe: special tool that digs "everything" instantly
+minetest.register_tool("basetools:pick_mese", {
+	description = "Mese Pickaxe",
+	inventory_image = "basetools_mesepick.png",
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		max_drop_level=3,
+		groupcaps={
+			cracky={times={[1]=0.0, [2]=0.0, [3]=0.0}, maxlevel=255},
+			crumbly={times={[1]=0.0, [2]=0.0, [3]=0.0}, maxlevel=255},
+			snappy={times={[1]=0.0, [2]=0.0, [3]=0.0}, maxlevel=255},
+			choppy={times={[1]=0.0, [2]=0.0, [3]=0.0}, maxlevel=255},
+			dig_immediate={times={[1]=0.0, [2]=0.0, [3]=0.0}, maxlevel=255},
+		},
+	},
+})
+
+
+--
+-- Pickaxes: Dig cracky
+--
+
+-- This should break after only 1 use
+minetest.register_tool("basetools:pick_dirt", {
+	description = "Dirt Pickaxe",
+	inventory_image = "basetools_dirtpick.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			cracky={times={[3]=2.00}, uses=1, maxlevel=0}
+		},
+	},
+})
+
+minetest.register_tool("basetools:pick_wood", {
+	description = "Wooden Pickaxe",
+	inventory_image = "basetools_woodpick.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			cracky={times={[3]=2.00}, uses=30, maxlevel=0}
+		},
+	},
+})
+minetest.register_tool("basetools:pick_stone", {
+	description = "Stone Pickaxe",
+	inventory_image = "basetools_stonepick.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			cracky={times={[2]=1.20, [3]=0.80}, uses=60, maxlevel=0}
+		},
+	},
+})
+minetest.register_tool("basetools:pick_steel", {
+	description = "Steel Pickaxe",
+	inventory_image = "basetools_steelpick.png",
+	tool_capabilities = {
+		max_drop_level=1,
+		groupcaps={
+			cracky={times={[1]=4.00, [2]=1.60, [3]=1.00}, uses=90, maxlevel=0}
+		},
+	},
+})
+minetest.register_tool("basetools:pick_steel_l1", {
+	description = "Steel Pickaxe Level 1",
+	inventory_image = "basetools_steelpick_l1.png",
+	tool_capabilities = {
+		max_drop_level=1,
+		groupcaps={
+			cracky={times={[1]=4.00, [2]=1.60, [3]=1.00}, uses=90, maxlevel=1}
+		},
+	},
+})
+minetest.register_tool("basetools:pick_steel_l2", {
+	description = "Steel Pickaxe Level 2",
+	inventory_image = "basetools_steelpick_l2.png",
+	tool_capabilities = {
+		max_drop_level=1,
+		groupcaps={
+			cracky={times={[1]=4.00, [2]=1.60, [3]=1.00}, uses=90, maxlevel=2}
+		},
+	},
+})
+
+--
+-- Shovels (dig crumbly)
+--
+
+minetest.register_tool("basetools:shovel_wood", {
+	description = "Wooden Shovel",
+	inventory_image = "basetools_woodshovel.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			crumbly={times={[3]=0.50}, uses=30, maxlevel=0}
+		},
+	},
+})
+minetest.register_tool("basetools:shovel_stone", {
+	description = "Stone Shovel",
+	inventory_image = "basetools_stoneshovel.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			crumbly={times={[2]=0.50, [3]=0.30}, uses=60, maxlevel=0}
+		},
+	},
+})
+minetest.register_tool("basetools:shovel_steel", {
+	description = "Steel Shovel",
+	inventory_image = "basetools_steelshovel.png",
+	tool_capabilities = {
+		max_drop_level=1,
+		groupcaps={
+			crumbly={times={[1]=1.00, [2]=0.70, [3]=0.60}, uses=90, maxlevel=0}
+		},
+	},
+})
+
+--
+-- Axes (dig choppy)
+--
+
+minetest.register_tool("basetools:axe_wood", {
+	description = "Wooden Axe",
+	inventory_image = "basetools_woodaxe.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			choppy={times={[3]=0.80}, uses=30, maxlevel=0},
+		},
+	},
+})
+minetest.register_tool("basetools:axe_stone", {
+	description = "Stone Axe",
+	inventory_image = "basetools_stoneaxe.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			choppy={times={[2]=1.00, [3]=0.60}, uses=60, maxlevel=0},
+		},
+	},
+})
+minetest.register_tool("basetools:axe_steel", {
+	description = "Steel Axe",
+	inventory_image = "basetools_steelaxe.png",
+	tool_capabilities = {
+		max_drop_level=1,
+		groupcaps={
+			choppy={times={[1]=2.00, [2]=0.80, [3]=0.40}, uses=90, maxlevel=0},
+		},
+	},
+})
+
+--
+-- Shears (dig snappy)
+--
+
+minetest.register_tool("basetools:shears_wood", {
+	description = "Wooden Shears",
+	inventory_image = "basetools_woodshears.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			snappy={times={[3]=1.00}, uses=30, maxlevel=0},
+		},
+	},
+})
+minetest.register_tool("basetools:shears_stone", {
+	description = "Stone Shears",
+	inventory_image = "basetools_stoneshears.png",
+	tool_capabilities = {
+		max_drop_level=0,
+		groupcaps={
+			snappy={times={[2]=1.00, [3]=0.50}, uses=60, maxlevel=0},
+		},
+	},
+})
+minetest.register_tool("basetools:shears_steel", {
+	description = "Steel Shears",
+	inventory_image = "basetools_steelshears.png",
+	tool_capabilities = {
+		max_drop_level=1,
+		groupcaps={
+			snappy={times={[1]=1.00, [2]=0.50, [3]=0.25}, uses=90, maxlevel=0},
+		},
+	},
+})
+
+--
+-- Swords (deal damage)
+--
+
+minetest.register_tool("basetools:sword_wood", {
+	description = "Wooden Sword",
+	inventory_image = "basetools_woodsword.png",
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		damage_groups = {fleshy=2},
+	}
+})
+minetest.register_tool("basetools:sword_stone", {
+	description = "Stone Sword",
+	inventory_image = "basetools_stonesword.png",
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		max_drop_level=0,
+		damage_groups = {fleshy=4},
+	}
+})
+minetest.register_tool("basetools:sword_steel", {
+	description = "Steel Sword",
+	inventory_image = "basetools_steelsword.png",
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		max_drop_level=1,
+		damage_groups = {fleshy=6},
+	}
+})
+
+-- Fire/Ice sword: Deal damage to non-fleshy damage groups
+minetest.register_tool("basetools:sword_fire", {
+	description = "Fire Sword",
+	inventory_image = "basetools_firesword.png",
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		max_drop_level=0,
+		damage_groups = {icy=6},
+	}
+})
+minetest.register_tool("basetools:sword_ice", {
+	description = "Ice Sword",
+	inventory_image = "basetools_icesword.png",
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		max_drop_level=0,
+		damage_groups = {firy=6},
+	}
+})
+
+--
+-- Dagger: Low damage, fast punch interval
+--
+minetest.register_tool("basetools:dagger_steel", {
+	description = "Steel Dagger",
+	inventory_image = "basetools_steeldagger.png",
+	tool_capabilities = {
+		full_punch_interval = 0.5,
+		max_drop_level=0,
+		damage_groups = {fleshy=2},
+	}
+})

games/minimal/mods/basetools/mod.conf

@@ -0,0 +1,2 @@
+name = basetools
+description = Contains basic digging tools

games/minimal/mods/bucket/init.lua

@@ -1,95 +1,26 @@
--- bucket (Minetest 0.4 mod)
+-- Bucket: Punch liquid source or flowing liquid to collect it
--- A bucket, which can pick up water and lava
 
-minetest.register_alias("bucket", "bucket:bucket_empty")
+minetest.register_tool("bucket:bucket", {
-minetest.register_alias("bucket_water", "bucket:bucket_water")
+	description = "Bucket",
-minetest.register_alias("bucket_lava", "bucket:bucket_lava")
-
-minetest.register_craft({
-	output = 'bucket:bucket_empty 1',
-	recipe = {
-		{'default:steel_ingot', '', 'default:steel_ingot'},
-		{'', 'default:steel_ingot', ''},
-	}
-})
-
-bucket = {}
-bucket.liquids = {}
-
--- Register a new liquid
---   source = name of the source node
---   flowing = name of the flowing node
---   itemname = name of the new bucket item (or nil if liquid is not takeable)
---   inventory_image = texture of the new bucket item (ignored if itemname == nil)
--- This function can be called from any mod (that depends on bucket).
-function bucket.register_liquid(source, flowing, itemname, inventory_image)
-	bucket.liquids[source] = {
-		source = source,
-		flowing = flowing,
-		itemname = itemname,
-	}
-	bucket.liquids[flowing] = bucket.liquids[source]
-
-	if itemname ~= nil then
-		minetest.register_craftitem(itemname, {
-			inventory_image = inventory_image,
-			stack_max = 1,
-			liquids_pointable = true,
-			on_use = function(itemstack, user, pointed_thing)
-				-- Must be pointing to node
-				if pointed_thing.type ~= "node" then
-					return
-				end
-				-- Check if pointing to a liquid
-				n = minetest.get_node(pointed_thing.under)
-				if bucket.liquids[n.name] == nil then
-					-- Not a liquid
-					minetest.add_node(pointed_thing.above, {name=source})
-				elseif n.name ~= source then
-					-- It's a liquid
-					minetest.add_node(pointed_thing.under, {name=source})
-				end
-				return {name="bucket:bucket_empty"}
-			end
-		})
-	end
-end
-
-minetest.register_craftitem("bucket:bucket_empty", {
 	inventory_image = "bucket.png",
 	stack_max = 1,
 	liquids_pointable = true,
+	groups = { disable_repair = 1 },
 	on_use = function(itemstack, user, pointed_thing)
 		-- Must be pointing to node
 		if pointed_thing.type ~= "node" then
 			return
 		end
-		-- Check if pointing to a liquid source
+		-- Check if pointing to a liquid
-		n = minetest.get_node(pointed_thing.under)
+		local n = minetest.get_node(pointed_thing.under)
-		liquiddef = bucket.liquids[n.name]
+		local def = minetest.registered_nodes[n.name]
-		if liquiddef ~= nil and liquiddef.source == n.name and liquiddef.itemname ~= nil then
+		if def ~= nil and (def.liquidtype == "source" or def.liquidtype == "flowing") then
 			minetest.add_node(pointed_thing.under, {name="air"})
-			return {name=liquiddef.itemname}
+			local inv = user:get_inventory()
+			if inv then
+				inv:add_item("main", ItemStack(n.name))
+			end
 		end
 	end,
 })
 
-bucket.register_liquid(
-	"default:water_source",
-	"default:water_flowing",
-	"bucket:bucket_water",
-	"bucket_water.png"
-)
-
-bucket.register_liquid(
-	"default:lava_source",
-	"default:lava_flowing",
-	"bucket:bucket_lava",
-	"bucket_lava.png"
-)
-
-minetest.register_craft({
-	type = "fuel",
-	recipe = "bucket:bucket_lava",
-	burntime = 60,
-})

games/minimal/mods/bucket/mod.conf

@@ -1,3 +1,2 @@
 name = bucket
-description = Minimal bucket to place and pick up liquids
+description = Minimal bucket to pick up liquids
-depends = default

games/minimal/mods/chest/init.lua

@@ -0,0 +1,27 @@
+minetest.register_node("chest:chest", {
+	description = "Chest",
+	tiles ={"chest_chest.png^[sheet:2x2:0,0", "chest_chest.png^[sheet:2x2:0,0",
+		"chest_chest.png^[sheet:2x2:1,0", "chest_chest.png^[sheet:2x2:1,0",
+		"chest_chest.png^[sheet:2x2:1,0", "chest_chest.png^[sheet:2x2:0,1"},
+	paramtype2 = "facedir",
+	groups = {dig_immediate=2,choppy=3},
+	is_ground_content = false,
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("formspec",
+				"size[8,9]"..
+				"list[current_name;main;0,0;8,4;]"..
+				"list[current_player;main;0,5;8,4;]" ..
+				"listring[]")
+		meta:set_string("infotext", "Chest")
+		local inv = meta:get_inventory()
+		inv:set_size("main", 8*4)
+	end,
+	can_dig = function(pos,player)
+		local meta = minetest.get_meta(pos);
+		local inv = meta:get_inventory()
+		return inv:is_empty("main")
+	end,
+})
+
+

games/minimal/mods/chest/mod.conf

@@ -0,0 +1,2 @@
+name = chest
+description = A simple chest to store items

games/minimal/mods/chest_of_everything/init.lua

@@ -0,0 +1,135 @@
+local F = minetest.formspec_escape
+
+-- Create a detached inventory
+local inv_everything = minetest.create_detached_inventory("everything", {
+	allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
+		return 0
+	end,
+	allow_put = function(inv, listname, index, stack, player)
+		return 0
+	end,
+	allow_take = function(inv, listname, index, stack, player)
+		return -1
+	end,
+})
+local inv_trash = minetest.create_detached_inventory("trash", {
+	allow_take = function(inv, listname, index, stack, player)
+		return 0
+	end,
+	allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
+		return 0
+	end,
+	on_put = function(inv, listname, index, stack, player)
+		inv:set_list("main", {})
+	end,
+})
+inv_trash:set_size("main", 1)
+
+local max_page = 1
+
+local function get_chest_formspec(page)
+	local start = 0 + (page-1)*32
+	return "size[8,9]"..
+	"list[detached:everything;main;0,0;8,4;"..start.."]"..
+	"list[current_player;main;0,5;8,4;]" ..
+	"label[6,4;Trash:]" ..
+	"list[detached:trash;main;7,4;1,1]" ..
+	"button[0,4;1,1;chest_of_everything_prev;"..F("<").."]"..
+	"button[1,4;1,1;chest_of_everything_next;"..F(">").."]"..
+	"label[2,4;"..F("Page: "..page).."]"..
+	"listring[detached:everything;main]"..
+	"listring[current_player;main]"..
+	"listring[detached:trash;main]"
+end
+
+minetest.register_node("chest_of_everything:chest", {
+	description = "Chest of Everything",
+	tiles ={"chest_of_everything_chest.png^[sheet:2x2:0,0", "chest_of_everything_chest.png^[sheet:2x2:0,0",
+		"chest_of_everything_chest.png^[sheet:2x2:1,0", "chest_of_everything_chest.png^[sheet:2x2:1,0",
+		"chest_of_everything_chest.png^[sheet:2x2:1,0", "chest_of_everything_chest.png^[sheet:2x2:0,1"},
+	paramtype2 = "facedir",
+	groups = {dig_immediate=2,choppy=3},
+	is_ground_content = false,
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("infotext", "Chest of Everything")
+		meta:set_int("page", 1)
+		meta:set_string("formspec", get_chest_formspec(1))
+	end,
+	on_receive_fields = function(pos, formname, fields, sender)
+		if formname == "" then
+			local meta = minetest.get_meta(pos)
+			local page = meta:get_int("page")
+			if fields.chest_of_everything_prev then
+				page = page - 1
+			elseif fields.chest_of_everything_next then
+				page = page + 1
+			end
+			if page < 1 then
+				page = 1
+			end
+			if page > max_page then
+				page = max_page
+			end
+			meta:set_int("page", page)
+			meta:set_string("formspec", get_chest_formspec(page))
+		end
+	end,
+})
+
+minetest.register_on_mods_loaded(function()
+	local items = {}
+	for itemstring,_ in pairs(minetest.registered_items) do
+		if itemstring ~= "" and itemstring ~= "unknown" and itemstring ~= "ignore" then
+			table.insert(items, itemstring)
+		end
+	end
+	--[[ Sort items in this order:
+	* Chest of Everything
+	* Test tools
+	* Other tools
+	* Craftitems
+	* Other items
+	* Dummy items ]]
+	local function compare(item1, item2)
+		local def1 = minetest.registered_items[item1]
+		local def2 = minetest.registered_items[item2]
+		local tool1 = def1.type == "tool"
+		local tool2 = def2.type == "tool"
+		local testtool1 = minetest.get_item_group(item1, "testtool") == 1
+		local testtool2 = minetest.get_item_group(item2, "testtool") == 1
+		local dummy1 = minetest.get_item_group(item1, "dummy") == 1
+		local dummy2 = minetest.get_item_group(item2, "dummy") == 1
+		local craftitem1 = def1.type == "craft"
+		local craftitem2 = def2.type == "craft"
+		if item1 == "chest_of_everything:chest" then
+			return true
+		elseif item2 == "chest_of_everything:chest" then
+			return false
+		elseif dummy1 and not dummy2 then
+			return false
+		elseif not dummy1 and dummy2 then
+			return true
+		elseif testtool1 and not testtool2 then
+			return true
+		elseif not testtool1 and testtool2 then
+			return false
+		elseif tool1 and not tool2 then
+			return true
+		elseif not tool1 and tool2 then
+			return false
+		elseif craftitem1 and not craftitem2 then
+			return true
+		elseif not craftitem1 and craftitem2 then
+			return false
+		else
+			return item1 < item2
+		end
+	end
+	table.sort(items, compare)
+	inv_everything:set_size("main", #items)
+	max_page = math.ceil(#items / 32)
+	for i=1, #items do
+		inv_everything:add_item("main", items[i])
+	end
+end)

games/minimal/mods/chest_of_everything/mod.conf

@@ -0,0 +1,2 @@
+name = chest_of_everything
+description = Adds the chest of everything from which you can take all items

games/minimal/mods/default/mapgen.lua

@@ -1,137 +0,0 @@
---
--- Aliases for map generator outputs
---
-
-
-minetest.register_alias("mapgen_stone", "default:stone")
-minetest.register_alias("mapgen_dirt", "default:dirt")
-minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass")
-minetest.register_alias("mapgen_sand", "default:sand")
-minetest.register_alias("mapgen_water_source", "default:water_source")
-minetest.register_alias("mapgen_river_water_source", "default:river_water_source")
-minetest.register_alias("mapgen_lava_source", "default:lava_source")
-minetest.register_alias("mapgen_gravel", "default:gravel")
-
-minetest.register_alias("mapgen_tree", "default:tree")
-minetest.register_alias("mapgen_leaves", "default:leaves")
-minetest.register_alias("mapgen_apple", "default:apple")
-minetest.register_alias("mapgen_junglegrass", "default:junglegrass")
-
-minetest.register_alias("mapgen_cobble", "default:cobble")
-minetest.register_alias("mapgen_stair_cobble", "stairs:stair_cobble")
-minetest.register_alias("mapgen_mossycobble", "default:mossycobble")
-
-
---
--- Ore generation
---
-
-
--- Blob ore first to avoid other ores inside blobs
-
-minetest.register_ore({ 
-	ore_type         = "blob",
-	ore              = "default:clay",
-	wherein          = {"default:sand"},
-	clust_scarcity   = 24*24*24,
-	clust_size       = 7,
-	y_min            = -15,
-	y_max            = 0,
-	noise_threshold = 0,
-	noise_params     = {
-		offset=0.35,
-		scale=0.2,
-		spread={x=5, y=5, z=5},
-		seed=-316,
-		octaves=1,
-		persist=0.5
-	},
-})
-
-minetest.register_ore({
-	ore_type       = "scatter",
-	ore            = "default:stone_with_coal",
-	wherein        = "default:stone",
-	clust_scarcity = 8*8*8,
-	clust_num_ores = 8,
-	clust_size     = 3,
-	y_min          = -31000,
-	y_max          = 64,
-})
-
-minetest.register_ore({
-	ore_type       = "scatter",
-	ore            = "default:stone_with_iron",
-	wherein        = "default:stone",
-	clust_scarcity = 12*12*12,
-	clust_num_ores = 3,
-	clust_size     = 2,
-	y_min          = -15,
-	y_max          = 2,
-})
-
-minetest.register_ore({
-	ore_type       = "scatter",
-	ore            = "default:stone_with_iron",
-	wherein        = "default:stone",
-	clust_scarcity = 9*9*9,
-	clust_num_ores = 5,
-	clust_size     = 3,
-	y_min          = -63,
-	y_max          = -16,
-})
-
-minetest.register_ore({
-	ore_type       = "scatter",
-	ore            = "default:stone_with_iron",
-	wherein        = "default:stone",
-	clust_scarcity = 7*7*7,
-	clust_num_ores = 5,
-	clust_size     = 3,
-	y_min          = -31000,
-	y_max          = -64,
-})
-
-
---
--- Register biomes for biome API
---
-
-
-minetest.clear_registered_biomes()
-minetest.clear_registered_decorations()
-
-minetest.register_biome({
-	name = "default:grassland",
-	--node_dust = "",
-	node_top = "default:dirt_with_grass",
-	depth_top = 1,
-	node_filler = "default:dirt",
-	depth_filler = 1,
-	--node_stone = "",
-	--node_water_top = "",
-	--depth_water_top = ,
-	--node_water = "",
-	y_min = 5,
-	y_max = 31000,
-	heat_point = 50,
-	humidity_point = 50,
-})
-
-minetest.register_biome({
-	name = "default:grassland_ocean",
-	--node_dust = "",
-	node_top = "default:sand",
-	depth_top = 1,
-	node_filler = "default:sand",
-	depth_filler = 2,
-	--node_stone = "",
-	--node_water_top = "",
-	--depth_water_top = ,
-	--node_water = "",
-	y_min = -31000,
-	y_max = 4,
-	heat_point = 50,
-	humidity_point = 50,
-})
-

games/minimal/mods/default/mod.conf

@@ -1,2 +0,0 @@
-name = default
-description = Minimal default, adds basic nodes