Epic/mods/mobs_monster/dungeon_master.lua

local S = mobs.intllib

local master_types = {

   {   nodes = {"nether:rack"},
      skins = {"mobs_dungeon_master_nether.png"},
   },
   {   nodes = {"nether:rack_deep"},
      skins = {"mobs_dungeon_master_netherdeep.png"},
   }
}

-- Dungeon Master by PilzAdam

mobs:register_mob("mobs_monster:dungeon_master", {
   type = "monster",
   passive = false,
   damage = 8,
   damage_max = 14,
   damage_chance = 80,
   attack_type = "dogshoot",
   dogshoot_switch = 1,
   dogshoot_count_max = 12, -- shoot for 10 seconds
   dogshoot_count2_max = 3, -- dogfight for 3 seconds
   reach = 3,
   shoot_interval = 2.2,
   arrow = "mobs_monster:fireball",
   shoot_offset = 1,
   hp_min = 22,
   hp_max = 45,
   armor = 60,
   collisionbox = {-0.7, -1, -0.7, 0.7, 1.6, 0.7},
   visual = "mesh",
   mesh = "mobs_dungeon_master.b3d",
   textures = {
      {"mobs_dungeon_master.png"},
      {"mobs_dungeon_master2.png"},
      {"mobs_dungeon_master3.png"},
   },
   makes_footstep_sound = true,
   sounds = {
      random = "mobs_dungeonmaster",
      shoot_attack = "mobs_fireball",
   },
   walk_velocity = 1,
   run_velocity = 3,
   jump = true,
   view_range = 15,
   drops = {
      {name = "default:mese_crystal_fragment", chance = 1, min = 0, max = 2},
      {name = "mobs:leather", chance = 2, min = 0, max = 2},
      {name = "default:mese_crystal", chance = 3, min = 0, max = 2},
      {name = "default:diamond", chance = 4, min = 0, max = 1},
      {name = "default:diamondblock", chance = 30, min = 0, max = 1},
      {name = "commoditymarkget:gold_coins", chance = 10, min = 30, max = 200},
      {name = "stations:scroll_teleport", chance = 40, min = 1, max = 1},
      {name = "stations:scroll_healing", chance = 50, min = 1, max = 1},
      {name = 'maxhp:lifeforce2', chance = 9, min = 0, max = 2}
   },
   water_damage = 1,
   lava_damage = 1,
   light_damage = 0,
   fear_height = 3,
   animation = {
      stand_start = 0,
      stand_end = 19,
      walk_start = 20,
      walk_end = 35,
      punch_start = 36,
      punch_end = 48,
      shoot_start = 36,
      shoot_end = 48,
      speed_normal = 15,
      speed_run = 15,
   },
   -- check surrounding nodes and spawn a specific monster
   on_spawn = function(self)

      local pos = self.object:get_pos() ; pos.y = pos.y - 1
      local tmp

      for n = 1, #master_types do

         tmp = master_types[n]

         if minetest.find_node_near(pos, 1, tmp.nodes) then

            self.base_texture = tmp.skins
            self.object:set_properties({textures = tmp.skins})

            if tmp.drops then
               self.drops = tmp.drops
            end

            return true
         end
      end

      return true -- run only once, false/nil runs every activation
   end
})


mobs:spawn({
   name = "mobs_monster:dungeon_master",
   nodes = {"default:stone", "nether:rack", "caverealms:stone_with_algae", "caverealms:stone_with_lichen", "cavrealms:stone_with_moss", "caverealms:hot_cobble" },
   max_light = 5,
   chance = 9000,
   active_object_count = 4,
   max_height = -70,
})

-- fireball (weapon)
mobs:register_arrow("mobs_monster:fireball", {
   visual = "sprite",
   visual_size = {x = 1, y = 1},
   textures = {"mobs_fireball.png"},
   collisionbox = {-0.1, -0.1, -0.1, 0.1, 0.1, 0.1},
   velocity = 7,
   tail = 1,
   tail_texture = "mobs_fireball.png",
   tail_size = 10,
   glow = 5,
   expire = 0.1,

   on_activate = function(self, staticdata, dtime_s)
      -- make fireball indestructable
      self.object:set_armor_groups({immortal = 1, fleshy = 100})
   end,

   -- if player has a good weapon with 7+ damage it can deflect fireball
   on_punch = function(self, hitter, tflp, tool_capabilities, dir)

      if hitter and hitter:is_player() and tool_capabilities and dir then

         local damage = tool_capabilities.damage_groups and
            tool_capabilities.damage_groups.fleshy or 1

         local tmp = tflp / (tool_capabilities.full_punch_interval or 1.4)

         if damage > 6 and tmp < 4 then

            self.object:set_velocity({
               x = dir.x * self.velocity,
               y = dir.y * self.velocity,
               z = dir.z * self.velocity,
            })
         end
      end
   end,

   -- direct hit, no fire... just plenty of pain
   hit_player = function(self, player)
      player:punch(self.object, 1.0, {
         full_punch_interval = 1.0,
         damage_groups = {fleshy = 8},
      }, nil)
   end,

   hit_mob = function(self, player)
      player:punch(self.object, 1.0, {
         full_punch_interval = 1.0,
         damage_groups = {fleshy = 8},
      }, nil)
   end,

   -- node hit
   hit_node = function(self, pos, node)
      mobs:boom(self, pos, 2)
   end
})

minetest.override_item("default:obsidian", {on_blast = function() end})