First commit

api.lua

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+slimes = {}
+function slimes:register_slime (name, def)
+	
+	local defbox = def.size/2
+	minetest.register_entity(name,{
+		initial_properties = {
+			name = name,
+			hp_max = def.max_hp,
+			visual_size = {x = def.size, y = def.size, z = def.size},
+			visual = "cube",
+			textures = def.textures, -- top, bottom, front, back, left, right
+			collisionbox = {-defbox, -defbox, -defbox, defbox, defbox, defbox},
+			physical = true,
+		},
+		alpha = 160,
+		timer = 6,
+		timer2 = 1,
+		timer3 = 0, --regularly check if slime touches ground and possibly set x/z velocity/acceleration to 0
+		yaw = 0,
+		direction = {},
+		status = 2, --1 = jump, 2 = rotate
+		found_target = false,
+
+		-- ON ACTIVATE --
+		on_activate = function(self)
+			self.object:setacceleration({x = 0, y = -def.gravity, z = 0})
+		end,
+
+		-- ON PUNCH --
+		on_punch = function(self)
+			local pos = self.object:getpos()
+			minetest.sound_play(def.sounds.damage.file, {pos = pos,gain = (def.sounds.damage.gain or 0.25)})
+			effect(pos, 20*math.random(), def.blood)
+			check_for_slime_death (self,def)
+		end,
+
+		-- ON STEP --
+		on_step = function(self, dtime)
+
+			self.timer2 = self.timer2 + dtime
+			local pos = self.object:getpos()
+
+			if self.status == 2 and (self.timer2 >= 0.5) then
+
+				self.timer2 = 1.2
+				self.status = 1
+
+				-- FIXME
+				if slime_lonely(pos) and not minetest.env:find_node_near(pos, 24, def.spawn) then
+					self.object:remove()
+				end
+
+				-- FIXME improve IA
+				local objs = minetest.env:get_objects_inside_radius(pos, 24)
+				local ppos = {}
+				self.found_target = false
+				self.yaw = math.random() * 360
+				for i, obj in ipairs(objs) do
+					if obj:is_player() and damage_enabled and not def.passive then self.found_target = obj break end
+					if self.found_target == false
+						and obj:get_luaentity()
+						and (obj:get_luaentity().name == "slimes:" .. def.class .. "biga" 
+						or obj:get_luaentity().name == "slimes:" .. def.class .. "medium") then
+							self.found_target = obj
+					end
+				end
+
+				if self.found_target  ~= false then
+					local target = self.found_target:getpos()
+					ppos = {x = target.x - pos.x, z = target.z - pos.z}
+					if ppos.x ~= 0 and ppos.z ~= 0 then --found itself as an object
+						self.yaw = math.abs(math.atan(ppos.x/ppos.z) - math.pi / 2)
+						if ppos.z < 0 then self.yaw = self.yaw + math.pi end
+						--self.found_target = true
+					end				
+				end
+
+				self.object:setyaw(self.yaw)
+				self.object:set_properties({automatic_rotate = 0})
+				self.direction = {x = math.cos(self.yaw)*2, y = 6, z = math.sin(self.yaw)*2}
+				minetest.sound_play(def.sounds.jump.file, {pos = pos,gain = (def.sounds.jump.gain or 0.25)})
+				self.object:set_properties({visual_size = {x = def.size, y = def.size - (def.size/8), z = def.size}})
+			end
+
+			self.timer = self.timer + dtime
+			self.timer3 = self.timer3 + dtime
+
+			if self.timer2 > 1.3 and self.object:getvelocity().y == 0 then
+
+				self.object:setvelocity(self.direction)
+				self.object:setacceleration({x = self.direction.x/5, y = -def.gravity, z = self.direction.z/5})
+				self.timer2 = 0
+				self.object:set_properties({visual_size = {x = def.size, y = def.size + (def.size/8), z = def.size}})
+
+			end
+
+			if (self.timer >= 6
+				or (self.timer >= 1 
+				and self.found_target ~= false))	
+				and self.object:getvelocity().y == 0 then
+
+				self.timer = 0
+				self.timer2 = 0
+				self.status = 2
+
+				if self.found_target == false then self.object:set_properties({automatic_rotate = math.pi * 8}) end
+
+				minetest.sound_play(def.sounds.land.file, {pos = pos,gain = (def.sounds.land.gain or 0.25)})
+
+				local n = minetest.get_node(pos)
+				if def.footprint 
+				and  minetest.get_item_group(n.name, "water") == 0
+				then minetest.set_node(pos, {name=def.footprint}) end
+				effect(pos, 20*math.random(), def.blood)
+				self.object:set_properties({visual_size = {x = def.size, y = def.size - (def.size/8), z = def.size}})
+
+				if damage_enabled then
+					
+					local tod = minetest.get_timeofday()
+
+					--FIXME water and lava damage detection is not working like it should.
+
+					-- sunlight damage
+					if def.light_damage and def.light_damage ~= 0
+					and minetest.get_item_group(n.name, "water") == 0 -- no sun damage in water
+					and pos.y > 0
+					and (minetest.get_node_light(pos) or 0) > 10 -- direct sunlight (was 4)
+					and tod > 0.2 and tod < 0.8 then
+						self.object:set_hp(self.object:get_hp()-def.light_damage)
+						effect(pos, 20*math.random(), "tnt_smoke.png")
+						minetest.chat_send_all("me derrito ".. (minetest.get_node_light(pos) or 0))
+					end
+
+					-- water damage
+					if def.water_damage and def.water_damage ~= 0
+					and minetest.get_item_group(n.name, "water") ~= 0 then
+						self.object:set_hp(self.object:get_hp()-def.water_damage)
+						effect(pos, 20*math.random(), "bubble.png")
+					end
+
+					-- lava damage
+					if def.lava_damage and def.lava_damage ~= 0
+					and minetest.get_item_group(n.name, "lava") ~= 0 then
+						self.object:set_hp(self.object:get_hp()-def.lava_damage)
+						effect(pos, 20*math.random(), "fire_basic_flame.png")
+					end
+
+					-- fall damage
+					if self.fall_damage == 1 and self.object:getvelocity().y == 0 then
+						local d = self.old_y - self.object:getpos().y
+						self.old_y = self.object:getpos().y
+						if d > 5 then
+							self.object:set_hp(self.object:get_hp() - math.floor(d - 5))
+						end
+					end
+
+					check_for_slime_death (self,def)
+
+					local objs = minetest.env:get_objects_inside_radius(pos, def.size*1.75)
+					for i, obj in ipairs(objs) do
+						if obj:is_player() and not def.passive then
+							obj:punch(self.object, 1.0, {full_punch_interval=1.0,damage_groups = {fleshy=def.damage}})
+							minetest.sound_play(def.sounds.attack.file, {pos = pos,gain = (def.sounds.attack.gain or 0.25)})
+						end
+					end
+				end
+			end
+
+			if self.timer3 > 0.07 then
+				local vel = self.object:getvelocity()
+				if vel.y == 0 and (vel.x ~= 0 or vel.z ~= 0) then
+					self.object:setvelocity({x = 0, y = 0, z = 0})
+					self.object:setacceleration({x = 0, y = -def.gravity, z = 0})
+					self.object:set_properties({visual_size = {x = def.size, y = def.size, z = def.size}})
+				end
+				self.timer3 = 0
+			end
+
+		end,
+	})
+end
+
+-- check if slime is alone
+function slime_lonely (pos)
+	local objs = minetest.env:get_objects_inside_radius(pos, 32)
+	for i, obj in pairs(objs) do
+		if obj:is_player() then return false end
+	end
+	return true
+end
+
+-- check for death
+function check_for_slime_death(self,def)
+
+	if self.object:get_hp() > 0 then return end
+
+	local pos = self.object:getpos()
+	pos.y = pos.y + 0.5
+
+	if (def.sounds.death.file ~= nil ) then minetest.sound_play(def.sounds.death.file, {pos = pos,gain = (def.sounds.death.gain or 0.25)}) end
+	self.object:remove()
+
+	local chance = def.drops.chance
+	if math.random(1, def.drops.chance+1) == 1 or def.drops.chance == 0 then
+		local min = def.drops.min
+		local max = def.drops.max
+		local num = math.floor(math.random(min, max+1))
+		if def.drops.type == "item" then
+			for i=1,num do	minetest.env:add_item(pos, def.drop) end
+		end
+		if def.drops.type == "entity" then
+			for i=1,num do	minetest.env:add_entity({x=pos.x, y=pos.y + (def.size*math.random()), z=pos.z + (def.size*math.random())}, def.drops.name)	end
+		end
+	end
+end
+
+-- particle effects
+function effect(pos, amount, texture)
+	minetest.add_particlespawner({
+		amount = amount,
+		time = 0.25,
+		minpos = pos,
+		maxpos = pos,
+		minvel = {x=-0, y=-2, z=-0},
+		maxvel = {x=2,  y=2,  z=2},
+		minacc = {x=-4, y=-4, z=-4},
+		maxacc = {x=4, y=4, z=4},
+		minexptime = 0.1,
+		maxexptime = 1,
+		minsize = 0.5,
+		maxsize = 1,
+		texture = texture,
+	})
+end
+
+-- spawn slimes
+slimes.spawn = {}
+function slimes:register_spawn(name, nodes, neighbors, max_light, min_light, chance, active_object_count, max_height)
+	slimes.spawn[name] = true	
+	minetest.register_abm({
+		nodenames = nodes,
+		neighbors = neighbors,
+		interval = 30,
+		chance = chance,
+		action = function(pos, node, _, active_object_count_wider)
+
+			-- do not spawn if too many active in area
+			if active_object_count_wider > active_object_count
+			or not pos then
+				return
+			end
+
+			-- mobs cannot spawn inside protected areas
+			if minetest.is_protected(pos, "") then
+				return
+			end
+
+			-- spawn above node
+			pos.y = pos.y + 1
+
+			-- check if light and height levels are ok to spawn
+			local light = minetest.get_node_light(pos)
+			if not light or light > max_light or light < min_light
+			or pos.y > max_height then
+				return
+			end
+
+			-- are we spawning inside a solid node?
+			local nod = minetest.get_node_or_nil(pos)
+			if not nod or not minetest.registered_nodes[nod.name]
+			or minetest.registered_nodes[nod.name].walkable == true then
+				return
+			end
+			pos.y = pos.y + 1
+			nod = minetest.get_node_or_nil(pos)
+			if not nod or not minetest.registered_nodes[nod.name]
+			or minetest.registered_nodes[nod.name].walkable == true then
+				return 
+			end
+
+			-- spawn mob half block higher
+			pos.y = pos.y - 0.5
+			minetest.add_entity(pos, name)
+
+		end
+	})
+end
+

depends.txt

@@ -0,0 +1,2 @@
+mesecons_materials
+default:tnt

greenslimes.lua

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+-- sounds
+local green_sounds = {
+	damage = { file = "green_slime_damage", gain = 0.25},
+	death = { file = "green_slime_death", gain = 0.25},
+	jump = { file = "green_slime_jump", gain = 0.25},
+	land = { file = "green_slime_land", gain = 0.25},
+	attack = { file = "green_slime_attack", gain = 0.25},
+	random = {}
+}
+-- textures: top, bottom, front, back, left, right
+local green_textures = {"green_slime_top.png", "green_slime_bottom.png", "green_slime_front.png", "green_slime_sides.png", "green_slime_sides.png", "green_slime_sides.png"}
+
+slimes:register_slime ("slimes:greenbig", {
+	name = "slimes:greenbig",
+	type = "monster",
+	class = "green",
+	passive = false,
+	size = 2,
+	textures = green_textures,
+	blood = "green_slime_blood.png",
+	gravity = 9.8,
+	min_hp = 4,
+	max_hp = 6,
+	damage = 2,
+	sounds = green_sounds,
+	drops = {	
+		type = "entity",
+		name = "slimes:greenmedium",
+		chance = 0, min = 1, max = 2},
+	-- damage by
+	water_damage = 0,
+	lava_damage = 10,
+	light_damage = 0,
+	fall_damage = 0,
+	-- spawn block
+	spawn = "default:junglegrass"
+})
+slimes:register_slime ("slimes:greenmedium", {
+	name = "slimes:greenmedium",
+	type = "monster",
+	class ="green",
+	passive = false,
+	size = 1,
+	min_hp = 3,
+	max_hp = 4,
+	damage = 1,
+	sounds = green_sounds,
+	textures = green_textures,
+	blood = "green_slime_blood.png",
+	gravity = 9.8,
+	drop = "",
+	drops = {
+		type = "entity",
+		name = "slimes:greensmall",
+		chance = 0, min = 2, max = 4},
+	-- damage by
+	water_damage = 0,
+	lava_damage = 10,
+	light_damage = 0,
+	fall_damage = 0,
+	spawn = "default:junglegrass"
+})
+slimes:register_slime ("slimes:greensmall", {
+	name = "slimes:greensmall",
+	type = "monster",
+	class ="green",
+	passive = false,
+	size = 0.5,
+	min_hp = 1,
+	max_hp = 2,
+	damage = 1,
+	sounds = green_sounds,
+	textures = green_textures,
+	blood = "green_slime_blood.png",
+	gravity = 9.8,
+	drop = "mesecons_materials:glue 1",
+	drops = {
+		type = "item",
+		name = "mesecons_materials:glue 1",
+		chance = 4, min = 1, max = 2},
+	-- damage by
+	water_damage = 0,
+	lava_damage = 10,
+	light_damage = 0,
+	fall_damage = 0,
+	spawn = "default:junglegrass"
+})
+
+slimes:register_spawn("slimes:greenbig", {"default:junglegrass"},{"air","default:junglegrass"}, 20, 4, 5000, 8, 32000)
+slimes:register_spawn("slimes:greenmedium", {"default:junglegrass"},{"air","default:junglegrass"}, 20, 4, 10000, 8, 32000)
+slimes:register_spawn("slimes:greensmall", {"default:junglegrass"},{"air","default:junglegrass"}, 20, 4, 15000, 8, 32000)
+slimes:register_spawn("slimes:greenmedium", {"default:mossycobble"},{"air"}, 20, 4, 10000, 8, 32000)
+slimes:register_spawn("slimes:greensmall", {"default:mossycobble"},{"air"}, 20, 4, 10000, 8, 32000)
+

init.lua

@@ -0,0 +1,11 @@
+-- API
+dofile(minetest.get_modpath("slimes").."/api.lua")
+
+-- SLIMES
+dofile(minetest.get_modpath("slimes").."/greenslimes.lua")
+dofile(minetest.get_modpath("slimes").."/lavaslimes.lua")
+--dofile(minetest.get_modpath("slimes").."/waterslimes.lua")
+
+if minetest.setting_get("log_mods") then minetest.log("action", "Slimes loaded") end
+damage_enabled = minetest.setting_getbool("enable_damage")
+

lavaslimes.lua

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+-- sounds
+local lava_sounds = {
+		damage = { file = "lava_slime_damage", gain = 0.25},
+		death = { file = "lava_slime_death", gain = 0.25},
+		jump = { file = "lava_slime_jump", gain = 0.25},
+		--land = { file = "default_cool_lava.3", gain = 5},
+		land = { file = "lava_slime_land", gain = 0.25},
+		attack = { file = "lava_slime_attack", gain = 0.25},
+		random = {}
+}
+-- textures : top, bottom, front, back, left, right
+local lava_textures = {"lava_slime_top.png", "lava_slime_bottom.png", "lava_slime_front.png", "lava_slime_sides.png", "lava_slime_sides.png", "lava_slime_sides.png"}
+
+slimes:register_slime ("slimes:lavabig", {
+	type = "monster",
+	class ="lava",
+	name = "slimes:lavabig",
+	passive = false,
+	size = 2,
+	max_hp = 6,
+	damage = 3,
+	sounds = lava_sounds,
+	textures = lava_textures,
+	blood = "lava_slime_blood.png",
+	footprint = "fire:basic_flame",
+	gravity = 9.8,
+	drops = {
+		type = "entity",
+		name = "slimes:lavamedium",
+		chance = 0, min = 1, max = 2},
+	-- damage by
+	water_damage = 10,
+	lava_damage = 0,
+	light_damage = 0,
+	fall_damage = 0,
+	spawn = "default:lava_source"
+})
+slimes:register_slime ("slimes:lavamedium", {
+	type = "monster",
+	class ="lava",
+	name = "slimes:lavamedium",
+	passive = false,
+	size = 1,
+	max_hp = 4,
+	damage = 2,
+	sounds = lava_sounds,
+	textures = lava_textures,
+	blood = "lava_slime_blood.png",
+	footprint = "fire:basic_flame",
+	gravity = 9.8,
+	drops = {
+		type = "entity",
+		name = "slimes:lavasmall",
+		chance = 0, min = 1, max = 4},
+	-- damage by
+	water_damage = 10,
+	lava_damage = 0,
+	light_damage = 0,
+	fall_damage = 0,
+	spawn = "default:lava_source"
+})
+slimes:register_slime ("slimes:lavasmall", {
+	type = "monster",
+	class ="lava",
+	name = "slimes:lavasmall",
+	passive = false,
+	size = 0.5,
+	max_hp = 2,
+	damage = 1,
+	sounds = lava_sounds,
+	textures = lava_textures,
+	blood = "lava_slime_blood.png",
+	footprint = "fire:basic_flame",
+	gravity = 9.8,
+	drops = {
+		type = "item",
+		name = "tnt:gunpowder",
+		chance = 4, min = 1, max = 2},
+	-- damage by
+	water_damage = 10,
+	lava_damage = 0,
+	light_damage = 0,
+	fall_damage = 0,
+	spawn = "default:lava_source"
+})
+
+slimes:register_spawn("slimes:lavabig", {"default:lava_source"},{"default:lava_source","default:lava_flowing"}, 20, 4, 5000, 8, -64)
+slimes:register_spawn("slimes:lavamedium", {"default:lava_source"},{"default:lava_source","default:lava_flowing"}, 20, 4, 10000, 8, -64)
+slimes:register_spawn("slimes:lavasmall", {"default:lava_source"},{"default:lava_source","default:lava_flowing"}, 20, 4, 15000, 8, -64)
+

readme.txt

@@ -0,0 +1,93 @@
+
+"Slimes Redone" - Mod for Minetest (http://www.minetest.net/)
+
+Introduction
+==========================================================================================================================
+This mod adds two type of mobs in the world of Minetest: green slimes and lava slimes. They are hostile and will attack the
+players as soon as they see them. If they are defeated, the slimes maybe will reward the player with useful resources.
+
+Green slimes live in the tall grass of the jungles and in the ancient ruins of lost temples. And lava slimes live deep 
+underground near the lava pools.
+
+I've made this mod inspired by this other: https://forum.minetest.net/viewtopic.php?f=11&t=2979&hilit=slimes which adds friendly
+slimes. Thank you Jeija!
+
+Details
+==========================================================================================================================
+- Adds two new hostile mobs: green slimes and lava slimes.
+- They attack players and hurt them on touch. (i'm not sure if the amount of damage is enough or too much...:/)
+- The biger ones split in a random amout of smaller versions when defeated: big > medium > small.
+- They can get different enviromental damage: water, lava, sunlight and falling.
+- They use custom textures and sounds. (more work needs to be done here ;P)
+- Cartoonish animation (they deform a bit when landing and stretch out when jumping).
+- Effects (blood, smoke, bubbles, footprints,..).
+- API to add new slimes.
+
+Green slimes:
+  > spawn in jungle grass or in temples mossy cobble (default:mossycobble).
+  > on die, they drop a randomish amount of glue (from mesecon mod)
+  > Lava hurts them.
+
+Lava slimes:
+  > spawn in lava pools deep under ground.
+  > on die, they drop a randomish amount of gunpowder (from default tnt mod).
+  > water hurts them.
+  > when they jump they leave behind a footprint of fire. ^^
+
+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 world directory.
+For further information or help see: http://wiki.minetest.com/wiki/Installing_Mods
+
+How to use the mod:
+==========================================================================================================================
+Just install it an everything should work.
+
+Mod Information
+==========================================================================================================================
+Version: 0.1
+Required Minetest Version: >=0.4.12
+Dependencies: default, default:tnt, mesecon (https://forum.minetest.net/viewtopic.php?f=11&t=628&hilit=mesecon)
+Soft Dependencies: (none)
+Highly Recommended: (none)
+Craft Recipies: (none)
+Git Repo: https://github.com/TomasJLuis/mt-slimes-redone
+
+Modders/Developers
+=========================================================================================================================
+If you are a modder, you should know that I've never used LUA before. this is my first mod for Mintetest, and I've used 
+this mod to learn how to mod on Minetest. So may be you will find a code full of mistakes and bad practices... ;P
+If you spot someting that can/must be improved/changed/removed and want to help me to improve this mode and my knowledge,
+please tell me here: https://forum.minetest.net/viewtopic.php?f=9&t=11743&p=175186#p175186
+Thank you!
+
+Version history
+==========================================================================================================================
+0.1 - Initial release
+
+Copyright and Licensing
+==========================================================================================================================
+
+- Author: Tomas J. Luis
+
+- Original sound for slime damage by RandomationPictures under licence CC0 1.0.
+http://www.freesound.org/people/RandomationPictures/sounds/138481/
+
+- Original sounds for slime jump, land and death by Dr. Minky under licence CC BY 3.0.
+http://www.freesound.org/people/DrMinky/sounds/
+
+- Source code and images by Tomas J. Luis under WTFPL.
+
+         DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ 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
+