Add tnt mod (freeminer version)

mods/tnt/README.txt

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+=== TNT-MOD for MINETEST-C55 ===
+by PilzAdam
+
+Introduction:
+This mod adds TNT to Minetest. TNT is a tool to help the player
+in mining.
+
+How to install:
+Unzip the archive an place it in minetest-base-directory/mods/minetest/
+if you have a windows client or a linux run-in-place client. If you have
+a linux system-wide instalation place it in ~/.minetest/mods/minetest/.
+If you want to install this mod only in one world create the folder
+worldmods/ in your worlddirectory.
+For further information or help see:
+http://wiki.minetest.com/wiki/Installing_Mods
+
+How to use the mod:
+Craft gunpowder by placing coal and gravel in the crafting area. The
+gunpowder can be used to craft TNT or as fuze for TNT. To craft TNT
+surround gunpowder with 4 wood in a + shape.
+There are different ways to blow up TNT:
+1. Hit it with a torch.
+2. Hit a gunpowder fuze that leads to a TNT block with a torch.
+3. Activate it with mesecons (fastest way)
+Be aware of the damage radius of 7 blocks!
+
+License:
+WTFPL (see below)
+
+See also:
+http://minetest.net/
+
+         DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.

mods/tnt/depends.txt

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+default
+fire

mods/tnt/init.lua

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+-- loss probabilities array (one in X will be lost)
+local loss_prob = {}
+
+loss_prob["default:cobble"] = 3
+loss_prob["default:dirt"] = 4
+
+local radius_max = tonumber(minetest.setting_get("tnt_radius_max") or 25)
+
+local eject_drops = function(pos, stack)
+	local obj = minetest.add_item(pos, stack)
+
+	if obj == nil then
+		return
+	end
+	obj:get_luaentity().collect = true
+	obj:setacceleration({x=0, y=-10, z=0})
+	obj:setvelocity({x=math.random(0,6)-3, y=10, z=math.random(0,6)-3})
+end
+
+local add_drop = function(drops, pos, item)
+	if loss_prob[item] ~= nil then
+		if math.random(1,loss_prob[item]) == 1 then
+			return
+		end
+	end
+
+	if drops[item] == nil then
+		drops[item] = ItemStack(item)
+	else
+		drops[item]:add_item(item)
+	end
+
+	if drops[item]:get_free_space() == 0 then
+		stack = drops[item]
+		eject_drops(pos, stack)
+		drops[item] = nil
+	end
+end
+
+local destroy = function(drops, pos, last, fast)
+	local nodename = minetest.get_node(pos).name
+	if nodename ~= "air" then
+		minetest.remove_node(pos, (fast and 1 or 0))
+		if last then
+			nodeupdate(pos)
+		end
+		if minetest.registered_nodes[nodename].groups.flammable ~= nil then
+			minetest.set_node(pos, {name="fire:basic_flame"}, (fast and 2 or 0))
+			return
+		end
+		local drop = minetest.get_node_drops(nodename, "")
+		for _,item in ipairs(drop) do
+			if type(item) == "string" then
+				add_drop(drops, pos, item)
+			else
+				for i=1,item:get_count() do
+					add_drop(drops, pos, item:get_name())
+				end
+			end
+		end
+	end
+end
+
+boom = function(pos, time)
+	minetest.after(time, function(pos)
+		if minetest.get_node(pos).name ~= "tnt:tnt_burning" then
+			return
+		end
+		minetest.sound_play("tnt_explode", {pos=pos, gain=1.5, max_hear_distance=2*64})
+		minetest.set_node(pos, {name="tnt:boom"})
+		minetest.after(0.5, function(pos)
+			minetest.remove_node(pos)
+		end, {x=pos.x, y=pos.y, z=pos.z})
+		
+
+		local radius = 2
+		local drops = {}
+		local list = {}
+		local dr = 0
+		local tnts = 1
+		local destroyed = 0
+		while dr<radius do
+			dr=dr+1
+			for dx=-dr,dr,dr*2 do
+				for dy=-dr,dr,1 do
+					for dz=-dr,dr,1 do
+						table.insert(list, {x=dx, y=dy, z=dz})
+					end
+				end
+			end
+			for dy=-dr,dr,dr*2 do
+				for dx=-dr+1,dr-1,1 do
+					for dz=-dr,dr,1 do
+						table.insert(list, {x=dx, y=dy, z=dz})
+					end
+				end
+			end
+			for dz=-dr,dr,dr*2 do
+				for dx=-dr+1,dr-1,1 do
+					for dy=-dr+1,dr-1,1 do
+						table.insert(list, {x=dx, y=dy, z=dz})
+					end
+				end
+			end
+				for _,p in ipairs(list) do
+					local np = {x=pos.x+p.x, y=pos.y+p.y, z=pos.z+p.z}
+					
+					local node =  minetest.get_node(np)
+					if node.name == "air" then
+					elseif node.name == "tnt:tnt" or node.name == "tnt:tnt_burning" then
+						if radius < radius_max then
+							if radius <= 5 then
+								radius = radius + 1
+							elseif radius <= 10 then
+								radius = radius + 0.5
+							else
+								radius = radius + 0.3
+							end
+							minetest.remove_node(np, 2)
+						tnts = tnts + 1
+						else
+						minetest.set_node(np, {name="tnt:tnt_burning"})
+						boom(np, 1)
+						end
+					elseif node.name == "fire:basic_flame"
+						--or string.find(node.name, "default:water_") 
+						--or string.find(node.name, "default:lava_") 
+						or node.name == "tnt:boom"
+						then
+						
+					else
+						if math.abs(p.x)<2 and math.abs(p.y)<2 and math.abs(p.z)<2 then
+							destroy(drops, np, dr == radius, radius > 7)
+							destroyed = destroyed + 1
+						else
+							if math.random(1,5) <= 4 then
+								destroy(drops, np, dr == radius, radius > 7)
+								destroyed = destroyed + 1
+							end
+						end
+					end
+				end
+		end
+
+		local objects = minetest.get_objects_inside_radius(pos, radius*2)
+		for _,obj in ipairs(objects) do
+			--if obj:is_player() or (obj:get_luaentity() and obj:get_luaentity().name ~= "__builtin:item") then
+				local p = obj:getpos()
+				local v = obj:getvelocity()
+				local vec = {x=p.x-pos.x, y=p.y-pos.y, z=p.z-pos.z}
+				local dist = (vec.x^2+vec.y^2+vec.z^2)^0.5
+				local damage = ((radius*20)/dist)
+				--print("DMG dist="..dist.." damage="..damage)
+				if obj:is_player() or (obj:get_luaentity() and obj:get_luaentity().name ~= "__builtin:item") then
+				obj:punch(obj, 1.0, {
+					full_punch_interval=1.0,
+					damage_groups={fleshy=damage},
+				}, vec)
+				end
+				if v ~= nil then
+					--obj:setvelocity({x=(p.x - pos.x) + (radius / 4) + v.x, y=(p.y - pos.y) + (radius / 2) + v.y, z=(p.z - pos.z) + (radius / 4) + v.z})
+					obj:setvelocity({x=(p.x - pos.x) + (radius / 2) + v.x, y=(p.y - pos.y) + radius + v.y,       z=(p.z - pos.z) + (radius / 2) + v.z})
+				end
+			--end
+		end
+
+
+		print("TNT exploded=" .. tnts .. " radius=" .. radius .. " destroyed="..destroyed)
+
+		for _,stack in pairs(drops) do
+			eject_drops(pos, stack)
+		end
+		local radiusp = radius+1
+		minetest.add_particlespawner(
+			100, --amount
+			0.1, --time
+			{x=pos.x-radiusp, y=pos.y-radiusp, z=pos.z-radiusp}, --minpos
+			{x=pos.x+radiusp, y=pos.y+radiusp, z=pos.z+radiusp}, --maxpos
+			{x=-0, y=-0, z=-0}, --minvel
+			{x=0, y=0, z=0}, --maxvel
+			{x=-0.5,y=5,z=-0.5}, --minacc
+			{x=0.5,y=5,z=0.5}, --maxacc
+			0.1, --minexptime
+			1, --maxexptime
+			8, --minsize
+			15, --maxsize
+			false, --collisiondetection
+			"tnt_smoke.png" --texture
+		)
+	end, pos)
+end
+
+minetest.register_node("tnt:tnt", {
+	description = "TNT",
+	tiles = {"tnt_top.png", "tnt_bottom.png", "tnt_side.png"},
+	groups = {dig_immediate=2, mesecon=2},
+	sounds = default.node_sound_wood_defaults(),
+	
+	on_punch = function(pos, node, puncher)
+		if puncher:get_wielded_item():get_name() == "default:torch" then
+			minetest.sound_play("tnt_ignite", {pos=pos})
+			minetest.set_node(pos, {name="tnt:tnt_burning"})
+			boom(pos, 4)
+		end
+	end,
+	
+	mesecons = {
+		effector = {
+			action_on = function(pos, node)
+				minetest.set_node(pos, {name="tnt:tnt_burning"})
+				boom(pos, 0)
+			end
+		},
+	},
+})
+
+minetest.register_node("tnt:tnt_burning", {
+	tiles = {{name="tnt_top_burning_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=1}}, "tnt_bottom.png", "tnt_side.png"},
+	light_source = 5,
+	drop = "",
+	sounds = default.node_sound_wood_defaults(),
+})
+
+minetest.register_node("tnt:boom", {
+	drawtype = "plantlike",
+	tiles = {"tnt_boom.png"},
+	light_source = LIGHT_MAX,
+	walkable = false,
+	drop = "",
+	groups = {dig_immediate=3},
+})
+
+burn = function(pos)
+	if minetest.get_node(pos).name == "tnt:tnt" then
+		minetest.sound_play("tnt_ignite", {pos=pos})
+		minetest.set_node(pos, {name="tnt:tnt_burning"})
+		boom(pos, 1)
+		return
+	end
+	if minetest.get_node(pos).name ~= "tnt:gunpowder" then
+		return
+	end
+	minetest.sound_play("tnt_gunpowder_burning", {pos=pos, gain=2})
+	minetest.set_node(pos, {name="tnt:gunpowder_burning"})
+	
+	minetest.after(1, function(pos)
+		if minetest.get_node(pos).name ~= "tnt:gunpowder_burning" then
+			return
+		end
+		minetest.after(0.5, function(pos)
+			minetest.remove_node(pos)
+		end, {x=pos.x, y=pos.y, z=pos.z})
+		for dx=-1,1 do
+			for dz=-1,1 do
+				for dy=-1,1 do
+					pos.x = pos.x+dx
+					pos.y = pos.y+dy
+					pos.z = pos.z+dz
+					
+					if not (math.abs(dx) == 1 and math.abs(dz) == 1) then
+						if dy == 0 then
+							burn({x=pos.x, y=pos.y, z=pos.z})
+						else
+							if math.abs(dx) == 1 or math.abs(dz) == 1 then
+								burn({x=pos.x, y=pos.y, z=pos.z})
+							end
+						end
+					end
+					
+					pos.x = pos.x-dx
+					pos.y = pos.y-dy
+					pos.z = pos.z-dz
+				end
+			end
+		end
+	end, pos)
+end
+
+minetest.register_node("tnt:gunpowder", {
+	description = "Gun Powder",
+	drawtype = "raillike",
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	tiles = {"tnt_gunpowder.png",},
+	inventory_image = "tnt_gunpowder_inventory.png",
+	wield_image = "tnt_gunpowder_inventory.png",
+	selection_box = {
+		type = "fixed",
+		fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
+	},
+	groups = {dig_immediate=2,attached_node=1},
+	sounds = default.node_sound_leaves_defaults(),
+	
+	on_punch = function(pos, node, puncher)
+		if puncher:get_wielded_item():get_name() == "default:torch" then
+			burn(pos)
+		end
+	end,
+})
+
+minetest.register_node("tnt:gunpowder_burning", {
+	drawtype = "raillike",
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	light_source = 5,
+	tiles = {{name="tnt_gunpowder_burning_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=1}}},
+	selection_box = {
+		type = "fixed",
+		fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
+	},
+	drop = "",
+	groups = {dig_immediate=2,attached_node=1},
+	sounds = default.node_sound_leaves_defaults(),
+})
+
+minetest.register_abm({
+	nodenames = {"tnt:tnt", "tnt:gunpowder"},
+	neighbors = {"fire:basic_flame", "default:lava_source", "default:lava_flowing"},
+	interval = 2,
+	chance = 10,
+	action = function(pos, node)
+		if node.name == "tnt:tnt" then
+			minetest.set_node(pos, {name="tnt:tnt_burning"})
+			boom({x=pos.x, y=pos.y, z=pos.z}, 0)
+		else
+			burn(pos)
+		end
+	end
+})
+
+minetest.register_craft({
+	output = "tnt:gunpowder",
+	type = "shapeless",
+	recipe = {"default:coal_lump", "default:gravel"}
+})
+
+minetest.register_craft({
+	output = "tnt:tnt",
+	recipe = {
+		{"", "group:wood", ""},
+		{"group:wood", "tnt:gunpowder", "group:wood"},
+		{"", "group:wood", ""}
+	}
+})
+
+if minetest.setting_get("log_mods") then
+	minetest.log("action", "tnt loaded")
+end