Integrate goblins and mobs.

goblin_digger.lua

@@ -0,0 +1,216 @@
+-- goblins_digger.lua
+--
+
+-- He destroys everything diggable in his path. It's too much trouble
+--  to fudge around with particulars. Besides, I don't want them to
+--  mine for me.
+local diggable_nodes = {"group:stone", "group:sand", "group:soil", "group:plant"}
+
+-- This translates yaw into vectors.
+local cardinals = {{x=0,y=0,z=0.75}, {x=-0.75,y=0,z=0}, {x=0,y=0,z=-0.75}, {x=0.75,y=0,z=0}}
+
+fun_caves.goblin_tunneling = function(self, type)
+	-- Types are available for fine-tuning.
+	if type == nil then
+		type = "digger"
+	end
+
+	local pos = self.object:getpos()
+
+	if self.state == "tunnel" then
+		-- Yaw is stored as one of the four cardinal directions.
+		if not self.digging_dir then
+			self.digging_dir = math.random(0,3)
+		end
+
+		-- Turn him roughly in the right direction.
+		-- self.object:setyaw(self.digging_dir * math.pi * 0.5 + math.random() * 0.5 - 0.25)
+		self.object:setyaw(self.digging_dir * math.pi * 0.5)
+
+		-- Get a pair of coordinates that should cover what's in front of him.
+		local p = vector.add(pos, cardinals[self.digging_dir+1])
+		p.y = p.y - 0.5  -- What's this about?
+		local p1 = vector.add(p, -0.3)
+		local p2 = vector.add(p, 0.3)
+
+		-- Get any diggable nodes in that area.
+		local np_list = minetest.find_nodes_in_area(p1, p2, diggable_nodes)
+
+		if #np_list > 0 then
+			-- Dig it.
+			for _, np in pairs(np_list) do
+				if np.name ~= "default:cobble" then
+					minetest.remove_node(np)
+				end
+			end
+		end
+
+		if math.random() < 0.2 then
+			local d = {-1,1}
+			self.digging_dir = (self.digging_dir + d[math.random(2)]) % 4
+		end
+
+		set_animation(self, "walk")
+		set_velocity(self, self.walk_velocity)
+	elseif self.state == "room" then  -- Dig a room.
+		if not self.room_radius then
+			self.room_radius = 1
+		end
+
+		set_animation(self, "stand")
+		set_velocity(self, 0)
+
+		-- Work from the inside, out.
+		for r = 1,self.room_radius do
+			-- Get a pair of coordinates that form a room.
+			local p1 = vector.add(pos, -r)
+			local p2 = vector.add(pos, r)
+			-- But not below him.
+			p1.y = pos.y
+
+			local np_list = minetest.find_nodes_in_area(p1, p2, diggable_nodes)
+
+			-- I wanted to leave the outer layer incomplete, but this
+			--  actually tends to make it look worse.
+			if r >= self.room_radius and #np_list == 0 then
+				self.room_radius = math.random(1,2) + math.random(0,1)
+				self.state = "stand"
+				break
+			end
+
+			if #np_list > 0 then
+				-- Dig it.
+				minetest.remove_node(np_list[math.random(#np_list)])
+				break
+			end
+		end
+	end
+
+	if self.state == "stand" and math.random() < 0.05 then
+		self.state = "tunnel"
+	elseif self.state == "tunnel" and math.random() < 0.05 then
+		self.state = "room"
+	elseif self.state == "tunnel" and math.random() < 0.1 then
+		self.state = "stand"
+	end
+end
+
+mobs:register_mob("fun_caves:goblin_digger", {
+	description = "Digger Goblin",
+	type = "animal",
+	passive = false,
+	damage = 1,
+	attack_type = "dogfight",
+	attacks_monsters = true,
+	hp_min = 5,
+	hp_max = 10,
+	armor = 100,
+	collisionbox = {-0.35,-1,-0.35, 0.35,-.1,0.35},
+	visual = "mesh",
+	mesh = "goblins_goblin.b3d",
+	drawtype = "front",
+		textures = {
+			{"goblins_goblin_digger.png"},
+		},
+	makes_footstep_sound = true,
+	sounds = {
+		random = "goblins_goblin_ambient",
+		warcry = "goblins_goblin_attack",
+		attack = "goblins_goblin_attack",
+		damage = "goblins_goblin_damage",
+		death = "goblins_goblin_death",
+		distance = 15,
+	},
+	walk_velocity = 2,
+	run_velocity = 3,
+	jump = true,
+	drops = {
+		{name = "default:mossycobble",
+		chance = 1, min = 1, max = 3},
+		{name = "fun_caves:mushroom_steak",
+		chance = 2, min = 1, max = 2},
+		{name = "default:torch",
+		chance = 3, min = 1, max = 10},
+	},
+	water_damage = 0,
+	lava_damage = 2,
+	light_damage = 0,
+	lifetimer = 360,
+	follow = {"default:diamond"},
+	view_range = 10,
+	owner = "",
+	order = "follow",
+	animation = {
+		speed_normal = 30,
+		speed_run = 30,
+		stand_start = 0,
+		stand_end = 79,
+		walk_start = 168,
+		walk_end = 187,
+		run_start = 168,
+		run_end = 187,
+		punch_start = 200,
+		punch_end = 219,
+	},
+	on_rightclick = function(self, clicker)
+		local item = clicker:get_wielded_item()
+		local name = clicker:get_player_name()
+
+		-- feed to heal goblin
+		if item:get_name() == "default:apple"
+		or item:get_name() == "farming:bread" then
+
+			local hp = self.object:get_hp()
+			-- return if full health
+			if hp >= self.hp_max then
+				minetest.chat_send_player(name, "goblin at full health.")
+				return
+			end
+			hp = hp + 4
+			if hp > self.hp_max then hp = self.hp_max end
+			self.object:set_hp(hp)
+			-- take item
+			if not minetest.setting_getbool("creative_mode") then
+				item:take_item()
+				clicker:set_wielded_item(item)
+			end
+
+		-- right clicking with gold lump drops random item from fun_caves.goblin_drops
+		elseif item:get_name() == "default:gold_lump" then
+			if not minetest.setting_getbool("creative_mode") then
+				item:take_item()
+				clicker:set_wielded_item(item)
+			end
+			local pos = self.object:getpos()
+			pos.y = pos.y + 0.5
+			minetest.add_item(pos, {name = fun_caves.goblin_drops[math.random(1, #fun_caves.goblin_drops)]})
+
+		else
+			-- if owner switch between follow and stand
+			if self.owner and self.owner == clicker:get_player_name() then
+				if self.order == "follow" then
+					self.order = "stand"
+				else
+					self.order = "follow"
+				end
+--			else
+--				self.owner = clicker:get_player_name()
+			end
+		end
+
+		mobs:capture_mob(self, clicker, 0, 5, 80, false, nil)
+	end,
+
+	do_custom = function(self)
+		fun_caves.goblin_tunneling(self, "digger")
+
+		fun_caves.search_replace(self.object:getpos(), 5, {"default:torch"}, "air")
+		fun_caves.search_replace(self.object:getpos(), 10, {"default:stone"}, "default:mossycobble")
+		fun_caves.search_replace(self.object:getpos(), 50, {"default:mossycobble"}, "fun_caves:mossycobble_trap")
+	end,
+})
+
+mobs:register_egg("fun_caves:goblin_digger", "Goblin Egg (digger)", "default_mossycobble.png", 1)
+mobs:register_spawn("fun_caves:goblin_digger", {"group:stone"}, 100, 0, 20 * fun_caves.goblin_spawn_frequency, 3, 31000)
+mobs:register_spawn("fun_caves:goblin_digger", {"default:mossycobble"}, 100, 0, 1 * fun_caves.goblin_spawn_frequency, 3, 31000)
+