commit ca882ceb668c2c93343b144cab381ff9f16aa4e8 Author: Noodlemire Date: Sat Jul 25 17:45:58 2020 -0500 Version 1.0.0 diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..e9ab0b3 --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,458 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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Each node has a total of 4 different states, including the fully repaired state. It does little on its own though; the most you'll get is TNT mod compatability and a test hammer that left-clicks to damage nodes and right-clicks to repair nodes. + +------------------------------------------------------------------------------------------------------------- +Dependencies and Support +------------------------------------------------------------------------------------------------------------- +Although there are no hard dependencies, there is an optional dependency on the tnt mod. When it is active, TNT will damage nodes that are outside of the destruction radius. + +------------------------------------------------------------------------------------------------------------- +License +------------------------------------------------------------------------------------------------------------- +The LGPL v2.1 License is used with this mod. See https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html or LICENSE.txt for more details. + +------------------------------------------------------------------------------------------------------------- +Installation +------------------------------------------------------------------------------------------------------------- +Download, unzip, and place within the usual minetest/current/mods folder, and it will behave in relation to the Minetest engine like any other mod. However, the first time its loaded, it won't do anything until the world is reloaded once. The reload is necessary so this mod can query all of the nodes that will exist in this world, which is necessary to automatically register cracked versions of them regardless of mod load order. This process will need repeating if any new mods are installed after this one. diff --git a/api.txt b/api.txt new file mode 100644 index 0000000..4f08443 --- /dev/null +++ b/api.txt @@ -0,0 +1,20 @@ +Functions +--------- + +node_damage.damage(pos, node, digger, num) + --Give damage to this node, and set it into the next stage of cracking. + --For reference, there are four stages in total, including the stage without damage at all. + --When the highest stage is damaged, the nodes is finally destroyed, and the node is either given to the player who destroyed it, + --or left on the ground. + pos: The location of the node to damage + node: The node itself to damage. This is optional. It can be provided if available, but this function can get the node itself. + digger: Optional; the person who is damaging this node. + num: Optional; the amount of times to damage this node. If its 3 or more, the node will always be destroyed. + +node_damage.repair(pos, node, num) + --Remove damage from this node, and set it into the previous stage of cracking. + --For reference, there are four stages in total, including the stage without damage at all. + --If the node is already fully repaired, nothing will happen. + pos: The location of the node to repair + node: The node itself to damage. This is optional. It can be provided if available, but this function can get the node itself. + num: Optional; the amount of times to repair this node. If its 3 or more, the node will always be fully repaired. diff --git a/init.lua b/init.lua new file mode 100644 index 0000000..3c7c327 --- /dev/null +++ b/init.lua @@ -0,0 +1,314 @@ +--[[ +Node Damage and Repair System +Copyright (C) 2020 Noodlemire + +This library is free software; you can redistribute it and/or +modify it under the terms of the GNU Lesser General Public +License as published by the Free Software Foundation; either +version 2.1 of the License, or (at your option) any later version. + +This library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public +License along with this library; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +--]] + +--mod-specific global storage +node_damage = {} + +--Get mod-private storage, which is used to remember what nodes will exist. +local store = minetest.get_mod_storage() + +--A list of nodes to define. Nodes added by this mod are initialized with an empty definition, +--so that override_item can be used when all other nodes are registered. +local queue = {} + +--Get the node_damage version of an item's name. +--In the original name, the comma is gsubbed into an underscore in order to comply with naming standards. +local function get_node_damage_name(name, i) + return "node_damage:"..(name:gsub(":", "_")).."_"..i +end + +--For each item name that was previously saved... +for name in pairs(store:to_table().fields) do + --Add it to the queue. + queue[name] = true + + --Also, add the three other stages of cracking to the queue after registering them with blank definitions. + for i = 1, 3 do + minetest.register_node(get_node_damage_name(name, i), {}) + queue[get_node_damage_name(name, i)] = true + end +end + +--Check if any particular node is valid for crackification. +local function node_is_valid(name, can_be_in_queue) + --Get the existing definition for this item. + local def = minetest.registered_items[name] + + --If this item isn't in the queue, it is nil, rather than false. + --So, if can_be_in_queue was left as false, this function would always return false. + if can_be_in_queue == false then + can_be_in_queue = nil + end + + --Return true if all of the following is true: + --The definition exists + --Either an entry in the queue exists and it can be in the queue, or there is no queue entry and it can't be in the queue. + --This item is not something that would immediately be dug up anyways + --This item isn't already cracked + --This item is a node + --This item doesn't originate from this mod. + --This item can be destroyed + --This item is visible + return (def and queue[name] == can_be_in_queue and minetest.get_item_group(name, "dig_immediate") == 0 + and minetest.get_item_group(name, "node_damage") == 0 and def.type == "node" and def.mod_origin ~= "node_damage" + and def.diggable and def.drawtype ~= "airlike") +end + +--Once every mod has loaded and therefore every node has been registered... +minetest.register_on_mods_loaded(function() + --For each node name in the queue... + for name in pairs(queue) do + --As long as the node is still valid + if node_is_valid(name, true) then + --Override the node to tell it which node to place when damaged. + local def = {node_damaged_name = get_node_damage_name(name, 1)} + minetest.override_item(name, def) + + --For each of the cracked stages... + for i = 1, 3 do + --Copy the base node's definition and remove information from the copy that can't be overridden. + def = table.copy(minetest.registered_items[name]) + def.name = nil + def.type = nil + def.mod_origin = nil + + --Give it the not_in_creative_inventory and node_damage groups + --The exact number of node_damage can be used to know how damaged a node is. + def.groups = def.groups or {} + def.groups.not_in_creative_inventory = 1 + def.groups.node_damage = i + + --If the node doesn't already define drops, make the cracked nodes only drop their fully repaired version. + if not def.drop then + def.drop = name + end + + --If the damage stage is 1, repairing it gives the base node. + if i == 1 then + def.node_repaired_name = name + --Otherwise, it gives the damage stage one less than this one. + else + def.node_repaired_name = get_node_damage_name(name, i - 1) + end + + --If the damage stage isn't the highest, 3, damaging it gives the next stage of damage. + if i ~= 3 then + def.node_damaged_name = get_node_damage_name(name, i + 1) + else + --Stage 3 of damage doesn't place a new node when damage. They're just destroyed. + def.node_damaged_name = nil + end + + --If this node defines textures... + if def.tiles then + --For each tile... + for k, tile in pairs(def.tiles) do + --If the tile is just a string, overlay cracks onto the tile + if type(tile) == "string" then + def.tiles[k] = tile.."^node_damage_"..i..".png" + --If there's a name field, overlay cracks onto the name + elseif def.tiles[k].name then + def.tiles[k].name = tile.name.."^node_damage_"..i..".png" + --If there's an image field (deprecated), overlay cracks onto the image + elseif def.tiles[k].image then + def.tiles[k].image = tile.image.."^node_damage_"..i..".png" + --Otherwise, relay an error message. + else + minetest.log("error: Could not overlay "..dump(tile)) + end + end + else + --Otherwise, relay an error message. + minetest.log(name.." has no tiles.") + break + end + + --Finally, override the cracked node's empty definition with the base node's altered definition. + minetest.override_item(get_node_damage_name(name, i), def) + end + end + end + + --This remembers if the player should be told to reload the world or not. + local reload_msg = false + + --For each registered item... + for name, def in pairs(minetest.registered_items) do + --If there's a valid node that wasn't in the queue... + if node_is_valid(name) then + --Know that the reload message should be displayed. + reload_msg = true + + --Remember the name of this newly added node. + store:set_int(name, 1) + end + end + + --If a reload message should be displayed, show it. + if reload_msg then + minetest.log("New nodes have been added to the game. Please reload to enable them to use the Node Damage and Repair System.") + end +end) + + + +--A function to damage a given node, as long as that's possible. +--pos: The location of the node to damage. +--node: Optional; the node itself. It there's already data, you can pass it along to save time, but this function can grab the data itself. +--digger: Optional; A person who is attacking this node. If its destroyed, that person will pick it up. +--num: Optional, defaults to 1; The amount of times to damage this node. 3 will destroy any node_damage node. +function node_damage.damage(pos, node, digger, num) + --If the node itself wasn't provided, grab it from the provided position + if not node then + node = minetest.get_node(pos) + end + + --Get the node's definition + local def = minetest.registered_items[node.name] + + --If the definition exists... + if def then + --If it defines a next stage of damage, swap to that next stage. + if def.node_damaged_name and minetest.registered_items[def.node_damaged_name] then + minetest.swap_node(pos, {name = def.node_damaged_name}) + --Otherwise, if it doesn't because it's in the last stage of damage, destroy the node. + elseif def.groups.node_damage == 3 then + --If a digger was provided, use node_dig to give the node to them. + if digger then + minetest.node_dig(pos, node, digger) + --Otherwise, use the standard dig_node. This leaves the drops on the ground. + else + minetest.dig_node(pos, node) + end + end + end + + --If num was provided and it was more than 1... + if num and num > 1 then + --Call damage again, but with 1 less num. + node_damage.damage(pos, node, digger, num - 1) + end +end + +--The opposite of damage. Removes damage from a node, as long as its possible. +--pos: The location of the node to repair. +--node: Optional; the node itself. It there's already data, you can pass it along to save time, but this function can grab the data itself. +--num: Optional, defaults to 1; The amount of times to repair this node. 3 will repair any node that still exists. +function node_damage.repair(pos, node, num) + --If the node itself wasn't provided, grab it from the provided position + if not node then + node = minetest.get_node(pos) + end + + --Get the node's definition + local def = minetest.registered_items[node.name] + + --If the definition exists and has the name of a less damaged node to switch to, swap the node. + if def and def.node_repaired_name and minetest.registered_items[def.node_repaired_name] then + minetest.swap_node(pos, {name = def.node_repaired_name}) + end + + --If num was provided and it was more than 1... + if num and num > 1 then + --Call repair again, but with 1 less num. + node_damage.damage(pos, node, digger, num - 1) + end +end + + + +--Register a tool that can test both the damage and repair functions. +minetest.register_tool("node_damage:test_hammer", { + description = "Node Damage Test Hammer", + inventory_image = "node_damage_test_hammer.png", + + --When left-clicking, + on_use = function(itemstack, user, pointed_thing) + --If the user is pointing at a node, + if pointed_thing.type == "node" then + --Get the position of that node + local pos = pointed_thing.under + + --Damage it once. + node_damage.damage(pos, nil, user) + end + end, + + --When right-clicking, + on_place = function(itemstack, placer, pointed_thing) + --If the user is pointing at a node, + if pointed_thing.type == "node" then + --Get the position of that node + local pos = pointed_thing.under + + --Repair it once. + node_damage.repair(pos) + end + end +}) + + + +--If the tnt mod is being used... +if tnt then + --Create a function that, after blasing a position, cracks nearby nodes. + local function on_blast(pos, intensity) + --Blast the position with a 3 node radius. + tnt.boom(pos, {radius = minetest.settings:get("tnt_radius") or 3}) + + --Cracking radius is set to a minimum of 5, but can be bigger if the explosion is more intense. + local r = 5 * math.max(1, intensity) + + --In an 11x11x11 cube... + for a = -r, r do + for b = -r, r do + for c = -r, r do + --Get the current pos of the node to damage + local npos = vector.add(pos, {x=a, y=b, z=c}) + --Get the distance between the current node and the center of the blast + local dist = vector.distance(pos, npos) + --Get the number of times to crack this node. Its random, + --but the maximum increases when its closer to the center of the blast. + local num = math.random(0, math.ceil(r / math.max(1, dist))) + + --If the distance of this node is within the radius of 5 (to create more of a spherical shape than a cube) + --And the randomly selected num wasn't 0... + if dist <= r and num > 0 then + --Damage this particular node num times. + node_damage.damage(npos, nil, nil, num) + end + end + end + end + end + + --Override tnt blocks to use the above function when exploded. + minetest.override_item("tnt:tnt", { + on_blast = function(pos, intensity) + minetest.after(0.1, on_blast, pos, intensity) + end + }) + + --Override burning tnt blocks to use the above function once the timer runs out. + minetest.override_item("tnt:tnt_burning", { + on_timer = function(pos, elapsed) + on_blast(pos, 1) + end + }) +end diff --git a/mod.conf b/mod.conf new file mode 100644 index 0000000..5cf0408 --- /dev/null +++ b/mod.conf @@ -0,0 +1,3 @@ +name = node_damage +description = Enables nodes to be partially damaged, and to be repaired afterwards. Damaged nodes will gain a cracked texture. +optional_depends = tnt diff --git a/screenshot.png b/screenshot.png new file mode 100644 index 0000000..b7a81df Binary files /dev/null and b/screenshot.png differ diff --git a/textures/node_damage_1.png b/textures/node_damage_1.png new file mode 100644 index 0000000..6de0e60 Binary files /dev/null and b/textures/node_damage_1.png differ diff --git a/textures/node_damage_2.png b/textures/node_damage_2.png new file mode 100644 index 0000000..364847b Binary files /dev/null and b/textures/node_damage_2.png differ diff --git a/textures/node_damage_3.png b/textures/node_damage_3.png new file mode 100644 index 0000000..9aa3db9 Binary files /dev/null and b/textures/node_damage_3.png differ diff --git a/textures/node_damage_test_hammer.png b/textures/node_damage_test_hammer.png new file mode 100644 index 0000000..3b5ae52 Binary files /dev/null and b/textures/node_damage_test_hammer.png differ