mods/tnt/init.lua

   1 --here is where tnt is defined
   2
   3 local function tnt(pos,range)
   4       local pos = vector.floor(vector.add(pos,0.5))
   5
   6       --throw players and items
   7       for _,object in ipairs(minetest.get_objects_inside_radius(pos, range)) do
   8             if  object:is_player() then
   9                   local ppos = object:getpos()
  10                   local power = (range - vector.distance(pos,ppos))*2
  11                   local distance = vector.subtract(ppos,pos)
  12                   local force = vector.multiply(distance,power)
  13                   object:add_player_velocity(force)
  14             elseif object:get_luaentity() and object:get_luaentity().name == "__builtin:item" then
  15                   local ppos = object:getpos()
  16                   local power = (range - vector.distance(pos,ppos))*2
  17                   local distance = vector.subtract(pos,ppos)
  18                   local force = vector.multiply(distance,power)
  19                   object:setvelocity(force)
  20             end
  21       end
  22
  23
  24
  25       local min = vector.add(pos,range)
  26       local max = vector.subtract(pos,range)
  27       local vm = minetest.get_voxel_manip()
  28       local emin, emax = vm:read_from_map(min,max)
  29       local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
  30       local data = vm:get_data()
  31
  32       local air = minetest.get_content_id("air")
  33       local content_id = minetest.get_name_from_content_id
  34
  35       local pos2 = vector.new(0,0,0)
  36
  37       for x=-range, range do
  38       for y=-range, range do
  39       for z=-range, range do
  40             if vector.distance(pos2, vector.new(x,y,z)) <= range then
  41                   local p_pos = area:index(pos.x+x,pos.y+y,pos.z+z)
  42                   local n = content_id(data[p_pos])
  43                   if n == "tnt:tnt" then
  44                         --print("adding tnt")
  45                         local obj = minetest.add_entity(vector.new(pos.x+x,pos.y+y,pos.z+z),"tnt:tnt")
  46                         obj:get_luaentity().range = 5
  47                         obj:get_luaentity().timer = math.random(1,10)*math.random()
  48                         --minetest.sound_play("tnt_ignite", {object=obj, gain = 1.0, max_hear_distance = range*range*range})
  49                   elseif n ~= "air" and n ~= "ignore" then
  50                         if math.random()>0.99 then
  51                               local item = minetest.get_node_drops(n, "main:diamondpick")[1]
  52                               minetest.add_item(vector.new(pos.x+x,pos.y+y,pos.z+z), item)
  53                         end
  54                   end
  55
  56                   data[p_pos] = air
  57             end
  58       end
  59       end
  60       end
  61
  62       vm:set_data(data)
  63       vm:write_to_map()
  64       vm:update_map()
  65
  66       minetest.sound_play("tnt_explode", {pos = pos, gain = 1.0, max_hear_distance = range*range*range})
  67
  68       --stop client from lagging
  69       local particle = range
  70       if particle > 15 then
  71             particle = 15
  72       end
  73
  74       minetest.add_particlespawner({
  75                   amount = particle*particle*particle,
  76                   time = 0.001,
  77                   minpos = pos,
  78                   maxpos = pos,
  79                   minvel = vector.new(-range,-range,-range),
  80                   maxvel = vector.new(range,range,range),
  81                   minacc = {x=0, y=0, z=0},
  82                   maxacc = {x=0, y=0, z=0},
  83                   minexptime = 1.1,
  84                   maxexptime = 1.5,
  85                   minsize = 1,
  86                   maxsize = 2,
  87                   collisiondetection = false,
  88                   vertical = false,
  89                   texture = "smoke.png",
  90             })
  91 end
  92
  93
  94 minetest.register_entity("tnt:tnt", {
  95       initial_properties = {
  96             hp_max = 1,
  97             physical = true,
  98             collide_with_objects = false,
  99             collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
 100             visual = "cube",
 101             visual_size = {x = 1, y = 1},
 102             textures = {"tnt_top.png", "tnt_bottom.png",
 103                   "tnt_side.png", "tnt_side.png",
 104                   "tnt_side.png", "tnt_side.png"},
 105             is_visible = true,
 106             pointable = true,
 107       },
 108
 109       timer = 5,
 110       range = 7,
 111
 112       get_staticdata = function(self)
 113             return minetest.serialize({
 114                   range = self.range,
 115                   timer = self.timer,
 116             })
 117       end,
 118
 119       on_activate = function(self, staticdata, dtime_s)
 120             self.object:set_armor_groups({immortal = 1})
 121             self.object:set_velocity({x = math.random(-5,5), y = 5, z = math.random(-5,5)})
 122             self.object:set_acceleration({x = 0, y = -9.81, z = 0})
 123             if string.sub(staticdata, 1, string.len("return")) == "return" then
 124                   local data = minetest.deserialize(staticdata)
 125                   if data and type(data) == "table" then
 126                         self.range = data.range
 127                         self.timer = data.timer
 128                   end
 129             end
 130
 131             minetest.add_particlespawner({
 132                   amount = 50,
 133                   time = 0,
 134                   minpos = pos,
 135                   maxpos = pos,
 136                   minvel = vector.new(-0.5,1,-0.5),
 137                   maxvel = vector.new(0.5,5,0.5),
 138                   minacc = {x=0, y=0, z=0},
 139                   maxacc = {x=0, y=0, z=0},
 140                   minexptime = 1.1,
 141                   maxexptime = 1.5,
 142                   minsize = 1,
 143                   maxsize = 2,
 144                   collisiondetection = false,
 145                   vertical = false,
 146                   texture = "smoke.png",
 147                   attached = self.object,
 148             })
 149             minetest.sound_play("tnt_ignite", {object = self.object, gain = 1.0, max_hear_distance = self.range*self.range*self.range})
 150       end,
 151
 152       on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir)
 153             local obj = minetest.add_item(self.object:getpos(), "tnt:tnt")
 154             self.object:remove()
 155       end,
 156
 157       sound_played = false,
 158       on_step = function(self, dtime)
 159             self.timer = self.timer - dtime
 160             local vel = self.object:getvelocity()
 161             vel = vector.multiply(vel,-0.05)
 162             self.object:add_velocity(vector.new(vel.x,0,vel.z))
 163
 164             if self.timer <= 0 then
 165                   local pos = self.object:getpos()
 166                   if not self.range then
 167                         self.range = 7
 168                   end
 169                   tnt(pos,self.range)
 170                   self.object:remove()
 171             end
 172       end,
 173 })
 174
 175
 176 minetest.register_node("tnt:tnt", {
 177     description = "Cobblestone",
 178     tiles = {"tnt_top.png", "tnt_bottom.png",
 179                   "tnt_side.png", "tnt_side.png",
 180                   "tnt_side.png", "tnt_side.png"},
 181     groups = {stone = 2, hard = 1, pickaxe = 2, hand = 4},
 182     sounds = main.stoneSound(),
 183     on_punch = function(pos, node, puncher, pointed_thing)
 184             local obj = minetest.add_entity(pos,"tnt:tnt")
 185             local range = 7
 186             obj:get_luaentity().range = range
 187             minetest.remove_node(pos)
 188     end,
 189 })
 190
 191 minetest.register_node("tnt:uranium_tnt", {
 192     description = "Cobblestone",
 193     tiles = {"tnt_top.png^[colorize:green:100", "tnt_bottom.png^[colorize:green:100",
 194                   "tnt_side.png^[colorize:green:100", "tnt_side.png^[colorize:green:100",
 195                   "tnt_side.png^[colorize:green:100", "tnt_side.png^[colorize:green:100"},
 196     groups = {stone = 2, hard = 1, pickaxe = 2, hand = 4},
 197     sounds = main.stoneSound(),
 198     on_punch = function(pos, node, puncher, pointed_thing)
 199             local obj = minetest.add_entity(pos,"tnt:tnt")
 200             local range = 145
 201             obj:get_luaentity().range = range
 202             minetest.remove_node(pos)
 203     end,
 204 })
 205
 206 minetest.register_node("tnt:uh_oh", {
 207     description = "Cobblestone",
 208     tiles = {"tnt_top.png", "tnt_bottom.png",
 209                   "tnt_side.png", "tnt_side.png",
 210                   "tnt_side.png", "tnt_side.png"},
 211     groups = {stone = 2, hard = 1, pickaxe = 2, hand = 4},
 212     sounds = main.stoneSound(),
 213     on_punch = function(pos, node, puncher, pointed_thing)
 214             local range = 10
 215             for x=-range, range do
 216             for y=-range, range do
 217             for z=-range, range do
 218                   minetest.add_node(vector.new(pos.x+x,pos.y+y,pos.z+z),{name="tnt:tnt"})
 219             end
 220             end
 221             end
 222     end,
 223 })
 224
 225
 226
 227 minetest.register_craft({
 228       output = "tnt:tnt",
 229       recipe = {
 230             {"main:wood", "main:wood", "main:wood"},
 231             {"main:wood", "main:coal", "main:wood"},
 232             {"main:wood", "main:wood", "main:wood"},
 233       },
 234 })