mummy.lua

   1 local S = minetest.get_translator("tsm_pyramids")
   2
   3 local mod_cmi = minetest.get_modpath("cmi") ~= nil
   4
   5 local mummy_walk_limit = 1
   6 local mummy_chillaxin_speed = 1
   7 local mummy_animation_speed = 10
   8 -- Note: This is currently broken due to a bug in Irrlicht, leave at 0
   9 local mummy_animation_blend = 0
  10
  11 -- Default player appearance
  12 local mummy_mesh = "tsm_pyramids_mummy.x"
  13 local mummy_texture = {"tsm_pyramids_mummy.png"}
  14 local mummy_hp = 20
  15 local mummy_drop = "default:papyrus"
  16
  17 local sound_normal = "mummy"
  18 local sound_hit = "mummy_hurt"
  19 local sound_dead = "mummy_death"
  20
  21 local spawner_check_range = 17
  22 local spawner_max_mobs = 6
  23
  24 local function get_animations()
  25         return {
  26                 stand_START = 74,
  27                 stand_END = 74,
  28                 sit_START = 81,
  29                 sit_END = 160,
  30                 lay_START = 162,
  31                 lay_END = 166,
  32                 walk_START = 74,
  33                 walk_END = 105,
  34                 mine_START = 74,
  35                 mine_END = 105,
  36                 walk_mine_START = 74,
  37                 walk_mine_END = 105
  38         }
  39 end
  40
  41 local npc_model = {}
  42 local npc_anim = {}
  43 local npc_sneak = {}
  44 local ANIM_STAND = 1
  45 local ANIM_SIT = 2
  46 local ANIM_LAY = 3
  47 local ANIM_WALK  = 4
  48 local ANIM_WALK_MINE = 5
  49 local ANIM_MINE = 6
  50
  51 local function hit(self)
  52         self.object:set_texture_mod("^tsm_pyramids_hit.png")
  53         minetest.after(0.4, function(self)
  54                 local prop = {textures = mummy_texture,}
  55                 if self ~= nil and self.object ~= nil then
  56                         self.object:set_texture_mod("")
  57                 end
  58         end, self)
  59 end
  60
  61 local function mummy_update_visuals_def(self)
  62         npc_anim = 0 -- Animation will be set further below immediately
  63         local prop = {
  64                 textures = mummy_texture,
  65         }
  66         self.object:set_properties(prop)
  67 end
  68
  69 local MUMMY_DEF = {
  70         hp_max = mummy_hp,
  71         physical = true,
  72         collisionbox = {-0.4, -0.01, -0.4, 0.4, 1.9, 0.4},
  73         visual = "mesh",
  74         visual_size = {x=8,y=8},
  75         mesh = mummy_mesh,
  76         textures = mummy_texture,
  77         makes_footstep_sound = true,
  78         npc_anim = 0,
  79         timer = 0,
  80         turn_timer = 0,
  81         vec = 0,
  82         yaw = 0,
  83         yawwer = 0,
  84         state = 1,
  85         jump_timer = 0,
  86         punch_timer = 0,
  87         sound_timer = 0,
  88         envdmg_timer = 0,
  89         attacker = "",
  90         attacking_timer = 0,
  91
  92         -- CMI stuff
  93         -- Track last cause of damage for cmi.notify_die
  94         last_damage_cause = { type = "unknown" },
  95         _cmi_is_mob = true,
  96         description = S("Mummy"),
  97 }
  98
  99 local spawner_DEF = {
 100         hp_max = 1,
 101         physical = false,
 102         pointable = false,
 103         visual = "mesh",
 104         visual_size = {x=3.3,y=3.3},
 105         mesh = mummy_mesh,
 106         textures = mummy_texture,
 107         makes_footstep_sound = false,
 108         timer = 0,
 109         automatic_rotate = math.pi * 2.9,
 110 }
 111
 112 spawner_DEF.on_activate = function(self)
 113         mummy_update_visuals_def(self)
 114         self.object:set_velocity({x=0, y=0, z=0})
 115         self.object:set_acceleration({x=0, y=0, z=0})
 116         self.object:set_armor_groups({immortal=1})
 117
 118 end
 119
 120 spawner_DEF.on_step = function(self, dtime)
 121         self.timer = self.timer + 0.01
 122         local n = minetest.get_node_or_nil(self.object:get_pos())
 123         if self.timer > 1 then
 124                 if n and n.name and n.name ~= "tsm_pyramids:spawner_mummy" then
 125                         self.object:remove()
 126                         return
 127                 end
 128         end
 129 end
 130
 131 spawner_DEF.on_punch = function(self, hitter)
 132
 133 end
 134
 135 MUMMY_DEF.on_activate = function(self, staticdata, dtime_s)
 136         if mod_cmi then
 137                 cmi.notify_activate(self, dtime_s)
 138         end
 139         mummy_update_visuals_def(self)
 140         self.anim = get_animations()
 141         self.object:set_animation({x=self.anim.stand_START,y=self.anim.stand_END}, mummy_animation_speed, mummy_animation_blend)
 142         self.npc_anim = ANIM_STAND
 143         self.object:set_acceleration({x=0,y=-20,z=0})--20
 144         self.state = 1
 145         self.object:set_armor_groups({fleshy=130})
 146 end
 147
 148 MUMMY_DEF.on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir, damage)
 149         if mod_cmi then
 150                 cmi.notify_punch(self, puncher, time_from_last_punch, tool_capabilities, dir, damage)
 151         end
 152         self.attacker = puncher
 153
 154         if damage > 0 then
 155                 self.last_damage = {
 156                         type = "punch",
 157                         puncher = puncher,
 158                 }
 159         end
 160         if puncher ~= nil then
 161                 minetest.sound_play(sound_hit, {pos = self.object:get_pos(), loop = false, max_hear_distance = 10, gain = 0.4}, true)
 162                 if time_from_last_punch >= 0.45 then
 163                         hit(self)
 164                         self.direction = {x=self.object:get_velocity().x, y=self.object:get_velocity().y, z=self.object:get_velocity().z}
 165                         self.punch_timer = 0
 166                         self.object:set_velocity({x=dir.x*mummy_chillaxin_speed,y=5,z=dir.z*mummy_chillaxin_speed})
 167                         if self.state == 1 then
 168                                 self.state = 8
 169                         elseif self.state >= 2 then
 170                                 self.state = 9
 171                         end
 172                 end
 173         end
 174 end
 175
 176 MUMMY_DEF.on_death = function(self, killer)
 177         minetest.sound_play(sound_dead, {pos = self.object:get_pos(), max_hear_distance = 10 , gain = 0.3}, true)
 178         -- Drop item on death
 179         local count = math.random(0,3)
 180         if count > 0 then
 181                 local pos = self.object:get_pos()
 182                 pos.y = pos.y + 1.0
 183                 minetest.add_item(pos, mummy_drop .. " " .. count)
 184         end
 185         if mod_cmi then
 186                 cmi.notify_die(self, self.last_damage)
 187         end
 188 end
 189
 190 MUMMY_DEF.on_step = function(self, dtime)
 191         if mod_cmi then
 192                 cmi.notify_step(self, dtime)
 193         end
 194         self.timer = self.timer + 0.01
 195         self.turn_timer = self.turn_timer + 0.01
 196         self.jump_timer = self.jump_timer + 0.01
 197         self.punch_timer = self.punch_timer + 0.01
 198         self.attacking_timer = self.attacking_timer + 0.01
 199         self.sound_timer = self.sound_timer + dtime + 0.01
 200
 201         local current_pos = self.object:get_pos()
 202         local current_node = minetest.get_node(current_pos)
 203         if self.time_passed == nil then
 204                 self.time_passed = 0
 205         end
 206
 207         -- Environment damage
 208         local def = minetest.registered_nodes[current_node.name]
 209         local dps = def.damage_per_second
 210         local dmg = 0
 211         local dmg_node, dmg_pos
 212         if dps ~= nil and dps > 0 then
 213                 dmg = dps
 214         end
 215         -- Damage from node
 216         if dmg < 4 and (minetest.get_item_group(current_node.name, "water") ~= 0 or minetest.get_item_group(current_node.name, "lava") ~= 0) then
 217                 dmg = 4
 218         end
 219         -- Damage by suffocation
 220         if (def.walkable == nil or def.walkable == true)
 221         and (def.drowning == nil or def.drowning == 0)
 222         and (def.damage_per_second == nil or def.damage_per_second <= 0)
 223         and (def.collision_box == nil or def.collision_box.type == "regular")
 224         and (def.node_box == nil or def.node_box.type == "regular")
 225         and (def.groups and def.groups.disable_suffocation ~= 1) then
 226                 dmg = dmg + 1
 227         end
 228         self.envdmg_timer = self.envdmg_timer + dtime
 229         if dmg > 0 then
 230                 if self.envdmg_timer >= 1 then
 231                         self.envdmg_timer = 0
 232                         self.object:set_hp(self.object:get_hp()-dmg)
 233                         self.last_damage = {
 234                                 type = "environment",
 235                                 pos = current_pos,
 236                                 node = current_node,
 237                         }
 238                         if self.object:get_hp() <= 0 then
 239                                 if self.on_death then
 240                                         self.on_death(self)
 241                                 end
 242                                 self.object:remove()
 243                                 return
 244                         else
 245                                 hit(self)
 246                                 self.sound_timer = 0
 247                                 minetest.sound_play(sound_hit, {pos = current_pos, max_hear_distance = 10, gain = 0.4}, true)
 248                         end
 249                 end
 250          else
 251                 self.time_passed = 0
 252          end
 253
 254         --update moving state every 1 or 2 seconds
 255         if self.state < 3 then
 256                 if self.timer > math.random(1,2) then
 257                         if self.attacker == "" then
 258                                 self.state = math.random(1,2)
 259                         else self.state = 1 end
 260                         self.timer = 0
 261                 end
 262         end
 263
 264         --play sound
 265         if self.sound_timer > math.random(5,35) then
 266                 minetest.sound_play(sound_normal, {pos = current_pos, max_hear_distance = 10, gain = 0.2}, true)
 267                 self.sound_timer = 0
 268         end
 269
 270         --after punched
 271         if self.state >= 8 then
 272                 if self.punch_timer > 0.15 then
 273                         if self.state == 9 then
 274                                 self.object:set_velocity({x=self.direction.x*mummy_chillaxin_speed,y=-20,z=self.direction.z*mummy_chillaxin_speed})
 275                                 self.state = 2
 276                         elseif self.state == 8 then
 277                                 self.object:set_velocity({x=0,y=-20,z=0})
 278                                 self.state = 1
 279                         end
 280                 end
 281         end
 282
 283         --STANDING
 284         if self.state == 1 then
 285                 self.yawwer = true
 286                 self.attacker = ""
 287                 for  _,object in ipairs(minetest.get_objects_inside_radius(self.object:get_pos(), 4)) do
 288                         if object:is_player() then
 289                                 self.yawwer = false
 290                                 local NPC = self.object:get_pos()
 291                                 local PLAYER = object:get_pos()
 292                                 self.vec = {x=PLAYER.x-NPC.x, y=PLAYER.y-NPC.y, z=PLAYER.z-NPC.z}
 293                                 self.yaw = math.atan(self.vec.z/self.vec.x)+math.pi^2
 294                                 if PLAYER.x > NPC.x then
 295                                         self.yaw = self.yaw + math.pi
 296                                 end
 297                                 self.yaw = self.yaw - 2
 298                                 self.object:set_yaw(self.yaw)
 299                                 self.attacker = object
 300                         end
 301                 end
 302
 303                 if self.attacker == "" and self.turn_timer > math.random(1,4) then
 304                         self.yaw = 360 * math.random()
 305                         self.object:set_yaw(self.yaw)
 306                         self.turn_timer = 0
 307                         self.direction = {x = math.sin(self.yaw)*-1, y = -20, z = math.cos(self.yaw)}
 308                 end
 309                 self.object:set_velocity({x=0,y=self.object:get_velocity().y,z=0})
 310                 if self.npc_anim ~= ANIM_STAND then
 311                         self.anim = get_animations()
 312                         self.object:set_animation({x=self.anim.stand_START,y=self.anim.stand_END}, mummy_animation_speed, mummy_animation_blend)
 313                         self.npc_anim = ANIM_STAND
 314                 end
 315                 if self.attacker ~= "" then
 316                         self.direction = {x = math.sin(self.yaw)*-1, y = -20, z = math.cos(self.yaw)}
 317                         self.state = 2
 318                 end
 319         end
 320         --WALKING
 321         if self.state == 2 then
 322
 323                 if self.direction ~= nil then
 324                         self.object:set_velocity({x=self.direction.x*mummy_chillaxin_speed,y=self.object:get_velocity().y,z=self.direction.z*mummy_chillaxin_speed})
 325                 end
 326                 if self.turn_timer > math.random(1,4) and not self.attacker then
 327                         self.yaw = 360 * math.random()
 328                         self.object:set_yaw(self.yaw)
 329                         self.turn_timer = 0
 330                         self.direction = {x = math.sin(self.yaw)*-1, y = -20, z = math.cos(self.yaw)}
 331                 end
 332                 if self.npc_anim ~= ANIM_WALK then
 333                         self.anim = get_animations()
 334                         self.object:set_animation({x=self.anim.walk_START,y=self.anim.walk_END}, mummy_animation_speed, mummy_animation_blend)
 335                         self.npc_anim = ANIM_WALK
 336                 end
 337
 338                 if self.attacker ~= "" and minetest.settings:get_bool("enable_damage") then
 339                         local s = self.object:get_pos()
 340                         local p = self.attacker:get_pos()
 341                         if (s ~= nil and p ~= nil) then
 342                                 local dist = ((p.x-s.x)^2 + (p.y-s.y)^2 + (p.z-s.z)^2)^0.5
 343
 344                                 if dist < 2 and self.attacking_timer > 0.6 then
 345                                 self.attacker:punch(self.object, 1.0,  {
 346                                         full_punch_interval=1.0,
 347                                         damage_groups = {fleshy=1}
 348                                 })
 349                                         self.attacking_timer = 0
 350                                 end
 351                         end
 352                 end
 353         end
 354 end
 355
 356 minetest.register_entity("tsm_pyramids:mummy", MUMMY_DEF)
 357 minetest.register_entity("tsm_pyramids:mummy_spawner", spawner_DEF)
 358
 359
 360 --spawn-egg/spawner
 361
 362 minetest.register_craftitem("tsm_pyramids:spawn_egg", {
 363         description = S("Mummy Spawn Egg"),
 364         _doc_items_longdesc = S("Can be used to create a hostile mummy."),
 365         _doc_items_usagehelp = S("Place the egg to create a mummy on this spot. Careful, it will probably attack immediately!"),
 366         inventory_image = "tsm_pyramids_mummy_egg.png",
 367         liquids_pointable = false,
 368         stack_max = 99,
 369         on_place = function(itemstack, placer, pointed_thing)
 370                 if pointed_thing.type ~= "node" then
 371                         return itemstack
 372                 end
 373
 374                 -- am I clicking on something with existing on_rightclick function?
 375                 local node = minetest.get_node(pointed_thing.under)
 376                 if placer and not placer:get_player_control().sneak then
 377                         if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
 378                                 return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack) or itemstack
 379                         end
 380                 end
 381
 382                 minetest.add_entity(pointed_thing.above,"tsm_pyramids:mummy")
 383                 if not minetest.settings:get_bool("creative_mode") then
 384                         itemstack:take_item()
 385                 end
 386                 return itemstack
 387         end,
 388
 389 })
 390
 391 -- Spawn a mummy at position
 392 function tsm_pyramids.spawn_mummy_at(pos, number)
 393         local node = minetest.get_node(pos)
 394         if node.name ~= "air" then
 395                 return
 396         end
 397         for _=1, number do
 398                 minetest.add_entity(pos,"tsm_pyramids:mummy")
 399         end
 400 end
 401
 402 local spawnersounds
 403 if default.node_sound_metal_defaults then
 404         spawnersounds = default.node_sound_metal_defaults()
 405 else
 406         spawnersounds = default.node_sound_stone_defaults()
 407 end
 408
 409 minetest.register_node("tsm_pyramids:spawner_mummy", {
 410         description = S("Mummy Spawner"),
 411         _doc_items_longdesc = S("A mummy spawner causes hostile mummies to appear in its vicinity as long it exists."),
 412         paramtype = "light",
 413         tiles = {"tsm_pyramids_spawner.png"},
 414         is_ground_content = false,
 415         drawtype = "allfaces",
 416         groups = {cracky=1,level=1},
 417         drop = "",
 418         on_construct = function(pos)
 419                 pos.y = pos.y - 0.28
 420                 minetest.add_entity(pos,"tsm_pyramids:mummy_spawner")
 421         end,
 422         on_destruct = function(pos)
 423                 for  _,obj in ipairs(minetest.get_objects_inside_radius(pos, 1)) do
 424                         if not obj:is_player() then
 425                                 if obj ~= nil and obj:get_luaentity().name == "tsm_pyramids:mummy_spawner" then
 426                                         obj:remove()
 427                                 end
 428                         end
 429                 end
 430         end,
 431         sounds = spawnersounds,
 432 })
 433
 434 -- Attempt to spawn a mummy at a random appropriate position around pos.
 435 -- Criteria:
 436 -- * Must be close to pos
 437 -- * Not in sunlight
 438 -- * Must be air on top of a non-air block
 439 -- * No more than 6 mummies in area
 440 -- * Player must be near is player_near_required is true
 441 function tsm_pyramids.attempt_mummy_spawn(pos, player_near_required)
 442         local player_near = false
 443         local mobs = 0
 444         for  _,obj in ipairs(minetest.get_objects_inside_radius(pos, spawner_check_range)) do
 445                 if obj:is_player() then
 446                         player_near = true
 447                 else
 448                         if obj:get_luaentity() and obj:get_luaentity().name == "tsm_pyramids:mummy" then
 449                                 mobs = mobs + 1
 450                         end
 451                 end
 452         end
 453         if player_near or (not player_near_required) then
 454                 if mobs < spawner_max_mobs then
 455                         local offset = {x=5,y=2,z=5}
 456                         local nposses = minetest.find_nodes_in_area(vector.subtract(pos, offset), vector.add(pos,offset), "air")
 457                         local tries = math.min(6, #nposses)
 458                         for i=1, tries do
 459                                 local r = math.random(1, #nposses)
 460                                 local npos = nposses[r]
 461                                 -- Check if mummy has 2 nodes of free space
 462                                 local two_space = false
 463                                 -- Check if mummy has something to walk on
 464                                 local footing = false
 465                                 -- Find the lowest node
 466                                 for y=-1, -5, -1 do
 467                                         npos.y = npos.y - 1
 468                                         local below = minetest.get_node(npos)
 469                                         if minetest.registered_items[below.name].liquidtype ~= "none" then
 470                                                 break
 471                                         end
 472                                         if below.name ~= "air" then
 473                                                 if y < -1 then
 474                                                         two_space = true
 475                                                 end
 476                                                 npos.y = npos.y + 1
 477                                                 footing = true
 478                                                 break
 479                                         end
 480                                 end
 481                                 local light = minetest.get_node_light(npos, 0.5)
 482                                 if not two_space then
 483                                         local above = minetest.get_node({x=npos.x, y=npos.y+1, z=npos.z})
 484                                         if above.name == "air" then
 485                                                 two_space = true
 486                                         end
 487                                 end
 488                                 if footing and two_space and light < 15 then
 489                                         tsm_pyramids.spawn_mummy_at(npos, 1)
 490                                         break
 491                                 else
 492                                         table.remove(nposses, r)
 493                                 end
 494                         end
 495                 end
 496         end
 497 end
 498
 499 if not minetest.settings:get_bool("only_peaceful_mobs") then
 500         minetest.register_abm({
 501                 nodenames = {"tsm_pyramids:spawner_mummy"},
 502                 interval = 2.0,
 503                 chance = 20,
 504                 action = function(pos, node, active_object_count, active_object_count_wider)
 505                         tsm_pyramids.attempt_mummy_spawn(pos, true)
 506                 end,
 507         })
 508 end
 509
 510 if minetest.get_modpath("awards") then
 511         awards.register_achievement("tsm_pyramids_no_mummy_spawner", {
 512                 title = S("No more mummies!"),
 513                 description = S("Destroy a mummy spawner by digging."),
 514                 secret = true,
 515                 icon = "tsm_pyramids_spawner.png",
 516                 trigger = {
 517                         type = "dig",
 518                         node = "tsm_pyramids:spawner_mummy",
 519                         target = 1
 520                 }
 521         })
 522 end