initial working version

armor.lua

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+
+-- Helmet
+
+armor:register_armor("obsidianstuff:helmet_obsidian", {
+	description = "Obsidian Helmet",
+	inventory_image = "obsidianstuff_inv_helmet_obsidian.png",
+	groups = {armor_head = 1, armor_heal = 10, armor_use = 500, armor_fire = 15},
+	armor_groups = {fleshy = 14},
+	damage_groups = {cracky = 2, snappy = 2, choppy = 2, level = 2}
+})
+
+minetest.register_craft({
+	output = "obsidianstuff:helmet_obsidian",
+	recipe = {
+		{"default:obsidian", "default:obsidian", "default:obsidian"},
+		{"default:obsidian", "", "default:obsidian"},
+		{"", "", ""}
+	}
+})
+
+
+-- Chestplate
+
+armor:register_armor("obsidianstuff:chestplate_obsidian", {
+	description = "Obsidian Chestplate",
+	inventory_image = "obsidianstuff_inv_chestplate_obsidian.png",
+	groups = {armor_torso = 1, armor_heal = 10, armor_use = 500, armor_fire = 15},
+	armor_groups = {fleshy = 18},
+	damage_groups = {cracky = 2, snappy = 2, choppy = 2, level = 2}
+})
+
+minetest.register_craft({
+	output = "obsidianstuff:chestplate_obsidian",
+	recipe = {
+		{"default:obsidian", "", "default:obsidian"},
+		{"default:obsidian", "default:obsidian", "default:obsidian"},
+		{"default:obsidian", "default:obsidian", "default:obsidian"}
+	}
+})
+
+
+-- Leggings
+
+armor:register_armor("obsidianstuff:leggings_obsidian", {
+	description = "Obsidian Leggings",
+	inventory_image = "obsidianstuff_inv_leggings_obsidian.png",
+	groups = {armor_legs = 1, armor_heal = 10, armor_use = 500, armor_fire = 15},
+	armor_groups = {fleshy = 18},
+	damage_groups = {cracky = 2, snappy = 2, choppy = 2, level = 2}
+})
+
+minetest.register_craft({
+	output = "obsidianstuff:leggings_obsidian",
+	recipe = {
+		{"default:obsidian", "default:obsidian", "default:obsidian"},
+		{"default:obsidian", "", "default:obsidian"},
+		{"default:obsidian", "", "default:obsidian"}
+	}
+})
+
+
+-- Boots
+
+armor:register_armor("obsidianstuff:boots_obsidian", {
+	description = "Obsidian Boots",
+	inventory_image = "obsidianstuff_inv_boots_obsidian.png",
+	groups = {armor_feet = 1, armor_heal = 10, armor_use = 500, armor_fire = 15},
+	armor_groups = {fleshy = 14},
+	damage_groups = {cracky = 2, snappy = 2, choppy = 2, level = 2}
+})
+
+minetest.register_craft({
+	output = "obsidianstuff:boots_obsidian",
+	recipe = {
+		{"default:obsidian", "", "default:obsidian"},
+		{"default:obsidian", "", "default:obsidian"}
+	}
+})
+
+
+-- Shield
+
+if minetest.get_modpath("shields") then
+
+	armor:register_armor("obsidianstuff:shield_obsidian", {
+		description = "Obsidian Shield",
+		inventory_image = "obsidianstuff_inv_shield_obsidian.png",
+		groups = {armor_shield = 1, armor_heal = 10, armor_use = 500, armor_fire = 15},
+		armor_groups = {fleshy = 18},
+		damage_groups = {cracky = 2, snappy = 2, choppy = 2, level = 2}
+	})
+
+	minetest.register_craft({
+		output = "obsidianstuff:shield_obsidian",
+		recipe = {
+			{"default:obsidian", "default:obsidian", "default:obsidian"},
+			{"default:obsidian", "default:obsidian", "default:obsidian"},
+			{"", "default:obsidian", ""}
+		}
+	})
+end

init.lua

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+
+local MP = minetest.get_modpath("obsidianstuff")
+
+
+-- Tools
+
+dofile(MP.."/tools.lua")
+
+
+-- Armor
+
+if minetest.get_modpath("3d_armor") then
+	dofile(MP.."/armor.lua")
+end
+
+
+-- Toolranks support
+
+if minetest.get_modpath("toolranks") then
+
+    minetest.override_item("obsidianstuff:sword", {
+        description = toolranks.create_description("Obsidian Sword", 0, 1),
+        original_description = "Obsidian Sword",
+        after_use = toolranks.new_afteruse
+    })
+
+    minetest.override_item("obsidianstuff:pick", {
+        description = toolranks.create_description("Obsidian Pickaxe", 0, 1),
+        original_description = "Obsidian Pickaxe",
+        after_use = toolranks.new_afteruse
+    })
+
+    minetest.override_item("obsidianstuff:axe", {
+        description = toolranks.create_description("Obsidian Axe", 0, 1),
+        original_description = "Obsidian Axe",
+        after_use = toolranks.new_afteruse
+    })
+
+    minetest.override_item("obsidianstuff:shovel", {
+        description = toolranks.create_description("Obsidian Shovel", 0, 1),
+        original_description = "Obsidian Shovel",
+        after_use = toolranks.new_afteruse
+    })
+end
+
+
+-- Aliases
+
+minetest.register_alias("obsidianstuff:helmet", "obsidianstuff:helmet_obsidian")
+minetest.register_alias("obsidianstuff:chestplate", "obsidianstuff:chestplate_obsidian")
+minetest.register_alias("obsidianstuff:leggings", "obsidianstuff:leggings_obsidian")
+minetest.register_alias("obsidianstuff:boots", "obsidianstuff:boots_obsidian")
+minetest.register_alias("obsidianstuff:shield", "obsidianstuff:shield_obsidian")
+
+minetest.register_alias("obsidianstuff:block", "default:obsidian")
+minetest.register_alias("obsidianstuff:ingot", "default:obsidian")

mod.conf

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+name = obsidianstuff
+description = Adds obsidian tools and armor
+depends = default
+optional_depends = 3d_armor, toolranks
+min_minetest_version = 5.0

tools.lua

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+
+-- Pickaxe
+
+minetest.register_tool("obsidianstuff:pick", {
+	description = "Obsidian Pickaxe",
+	inventory_image = "obsidianstuff_pick.png",
+	tool_capabilities = {
+		full_punch_interval = 0.9,
+		max_drop_level = 2,
+		groupcaps = {
+			cracky = {
+				times = {[1] = 2.5, [2] = 1.20, [3] = 0.60},
+				uses = 20,
+				maxlevel = 2
+			}
+		},
+		damage_groups = {fleshy = 6},
+	},
+	sound = {breaks = "default_tool_breaks"},
+	groups = {pickaxe = 1}
+})
+
+minetest.register_craft({
+    output = "obsidianstuff:pick",
+    recipe = {
+        {"default:obsidian", "default:obsidian", "default:obsidian"},
+        {"", "default:stick", ""},
+        {"", "default:stick", ""}
+    }
+})
+
+
+-- Shovel
+
+minetest.register_tool("obsidianstuff:shovel", {
+    description = "Obsidian Shovel",
+    inventory_image = "obsidianstuff_shovel.png",
+    wield_image = "obsidianstuff_shovel.png^[transformR90",
+	tool_capabilities = {
+		full_punch_interval = 1.0,
+		max_drop_level = 1,
+		groupcaps = {
+			crumbly = {
+				times = {[1] = 1.20, [2] = 0.60, [3] = 0.30},
+				uses = 20,
+				maxlevel = 2
+			}
+		},
+		damage_groups = {fleshy = 4},
+	},
+	sound = {breaks = "default_tool_breaks"},
+	groups = {shovel = 1}
+})
+
+minetest.register_craft({
+    output = "obsidianstuff:shovel",
+    recipe = {
+        {"default:obsidian"},
+        {"default:stick"},
+        {"default:stick"}
+    }
+})
+
+
+-- Axe
+
+minetest.register_tool("obsidianstuff:axe", {
+    description = "Obsidian Axe",
+    inventory_image = "obsidianstuff_axe.png",
+	tool_capabilities = {
+		full_punch_interval = 0.8,
+		max_drop_level = 1,
+		groupcaps = {
+			choppy = {
+				times = {[1] = 2.20, [2] = 1.00, [3] = 0.60},
+				uses = 20,
+				maxlevel = 2
+			}
+		},
+		damage_groups = {fleshy = 8},
+	},
+	sound = {breaks = "default_tool_breaks"},
+	groups = {axe = 1}
+})
+
+minetest.register_craft({
+    output = "obsidianstuff:axe",
+    recipe = {
+        {"default:obsidian", "default:obsidian", ""},
+        {"default:obsidian", "default:stick", ""},
+        {"", "default:stick", ""}
+    }
+})
+
+
+-- Sword
+
+minetest.register_tool("obsidianstuff:sword", {
+    description = "Obsidian Sword",
+    inventory_image = "obsidianstuff_sword.png",
+	tool_capabilities = {
+		full_punch_interval = 0.6,
+		max_drop_level = 1,
+		groupcaps = {
+			snappy = {
+				times = {[1] = 1.90, [2] = 0.90, [3] = 0.30},
+				uses = 20,
+				maxlevel = 2
+			}
+		},
+		damage_groups = {fleshy = 10}
+	},
+	sound = {breaks = "default_tool_breaks"},
+	groups = {sword = 1}
+})
+
+minetest.register_craft({
+    output = "obsidianstuff:sword",
+    recipe = {
+        {"default:obsidian"},
+        {"default:obsidian"},
+        {"default:stick"}
+    }
+})