Merge pull request 'Fix wolves and make chickens slow fall' (#1614) from jordan4ibanez/MineClone2:mineclone5 into mineclone5

Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/1614

mods/ENTITIES/mcl_mobs/api/api.lua

@@ -355,6 +355,7 @@ function mobs:register_mob(name, def)
 		hostile_cooldown = def.hostile_cooldown or 15,
 		tilt_fly = def.tilt_fly,
 		tilt_swim = def.tilt_swim,
+		fall_slow = def.fall_slow,
 		-- End of MCL2 extensions
 
 		on_spawn = def.on_spawn,

mods/ENTITIES/mcl_mobs/api/mob_functions/ai.lua

@@ -1,5 +1,7 @@
 local math_random = math.random
 local math_pi     = math.pi
+local math_floor  = math.floor
+local math_round  = math.round
 
 local vector_multiply = vector.multiply
 local vector_add      = vector.add
@@ -22,6 +24,12 @@ local quick_rotate = function(self,dtime)
 	end
 end
 
+--a simple helper function for rounding
+--http://lua-users.org/wiki/SimpleRound
+function round2(num, numDecimalPlaces)
+	return tonumber(string.format("%." .. (numDecimalPlaces or 0) .. "f", num))
+end
+
 
 --[[
  _                     _ 
@@ -89,6 +97,21 @@ local land_state_execution = function(self,dtime)
 		float_now = true
 	end
 
+	--make slow falling mobs fall slow
+	if self.fall_slow then
+		if self.object:get_velocity().y < 0 then
+			--lua is acting really weird so we have to help it
+			if round2(self.object:get_acceleration().y, 1) == -self.gravity then
+				self.object:set_acceleration(vector_new(0,0,0))
+				mobs.mob_fall_slow(self)
+			end
+		else
+			if round2(self.object:get_acceleration().y, 1) == 0 then
+				self.object:set_acceleration(vector_new(0,-self.gravity,0))
+			end
+		end
+	end
+
 	if self.state == "stand" then
 
 		--do animation
@@ -102,6 +125,8 @@ local land_state_execution = function(self,dtime)
 			mobs.reverse_explosion_animation(self,dtime)
 		end
 
+		mobs.lock_yaw(self)
+
 	elseif self.state == "walk" then
 
 		self.walk_timer = self.walk_timer - dtime
@@ -275,6 +300,8 @@ local swim_state_execution = function(self,dtime)
 				mobs.set_static_pitch(self)
 			end
 
+			mobs.lock_yaw(self)
+
 		elseif self.state == "swim" then
 
 			self.walk_timer = self.walk_timer - dtime
@@ -307,6 +334,9 @@ local swim_state_execution = function(self,dtime)
 			if self.tilt_swim then
 				mobs.set_dynamic_pitch(self)
 			end
+
+			--enable rotation locking
+			mobs.movement_rotation_lock(self)
 		end
 	--flop around if not inside swim node
 	else
@@ -415,6 +445,8 @@ local fly_state_execution = function(self,dtime)
 				mobs.set_static_pitch(self)
 			end
 
+			mobs.lock_yaw(self)
+
 		elseif self.state == "fly" then
 
 			self.walk_timer = self.walk_timer - dtime
@@ -446,6 +478,10 @@ local fly_state_execution = function(self,dtime)
 			end
 
 			mobs.set_fly_velocity(self,self.walk_velocity)
+
+			--enable rotation locking
+			mobs.movement_rotation_lock(self)
+
 		elseif self.state == "attack" then
 		
 			--execute mob attack type
@@ -544,6 +580,8 @@ local jump_state_execution = function(self,dtime)
 		--set the velocity of the mob
 		mobs.set_velocity(self,0)
 
+		mobs.lock_yaw(self)
+
 	elseif self.state == "jump" then
 
 		self.walk_timer = self.walk_timer - dtime

mods/ENTITIES/mcl_mobs/api/mob_functions/animation.lua

@@ -136,6 +136,20 @@ mobs.set_yaw_while_attacking = function(self)
 	self.yaw = new_yaw
 end
 
+--this is used to unlock a mob's yaw after attacking
+mobs.unlock_yaw = function(self)
+	if self.object:get_properties().automatic_face_movement_dir == false then
+		self.object:set_properties{automatic_face_movement_dir = self.rotate}
+	end
+end
+
+--this is used to lock a mob's yaw when they're standing
+mobs.lock_yaw = function(self)
+	if self.object:get_properties().automatic_face_movement_dir then
+		self.object:set_properties{automatic_face_movement_dir = false}
+	end
+end
+
 
 local calculate_pitch = function(self)
 	local pos  = self.object:get_pos()

mods/ENTITIES/mcl_mobs/api/mob_functions/environment.lua

@@ -129,7 +129,14 @@ end
 mobs.group_attack_initialization = function(self)
 
 	--get basic data
-	local friends_list = table_copy(self.group_attack)
+	local friends_list
+
+	if self.group_attack == true then
+		friends_list = {self.name}
+	else
+		friends_list = table_copy(self.group_attack)
+	end
+
 	local objects_in_area = minetest_get_objects_inside_radius(self.object:get_pos(), self.view_range)
 
 	--get the player's name
@@ -146,8 +153,8 @@ mobs.group_attack_initialization = function(self)
 			if detected_mob._cmi_is_mob and detected_mob.state ~= "attack" and detected_mob.owner ~= name then
 				if detected_mob.name == self.name then
 					turn_hostile(self,detected_mob)
-				elseif type(detected_mob.group_attack) == "table" then
-					for _,id in pairs(self.group_attack) do
+				else
+					for _,id in pairs(friends_list) do
 						if detected_mob.name == id then
 							turn_hostile(self,detected_mob)
 							break

mods/ENTITIES/mcl_mobs/api/mob_functions/movement.lua

@@ -113,8 +113,36 @@ mobs.jump = function(self, velocity)
     self.object:add_velocity(vector_new(0,velocity,0))    
 end
 
+--make mobs fall slowly
+mobs.mob_fall_slow = function(self)
+
+	local current_velocity = self.object:get_velocity()
+
+	local goal_velocity = {
+		x = 0,
+		y = -2,
+		z = 0,
+	}
 
 
+	local new_velocity_addition = vector.subtract(goal_velocity,current_velocity)
+
+	new_velocity_addition.x = 0
+	new_velocity_addition.z = 0
+
+	if vector_length(new_velocity_addition) > vector_length(goal_velocity) then
+		vector.multiply(new_velocity_addition, (vector_length(goal_velocity) / vector_length(new_velocity_addition)))
+	end
+
+	new_velocity_addition.x = 0
+	new_velocity_addition.z = 0
+
+	--smooths out mobs a bit
+	if vector_length(new_velocity_addition) >= 0.0001 then
+		self.object:add_velocity(new_velocity_addition)
+	end
+
+end
 
 
 --[[

mods/ENTITIES/mobs_mc/chicken.lua

@@ -18,6 +18,7 @@ mobs:register_mob("mobs_mc:chicken", {
 	xp_max = 3,
 	collisionbox = {-0.2, -0.01, -0.2, 0.2, 0.69, 0.2},
 	runaway = true,
+	fall_slow = true,
 	floats = 1,
 	visual = "mesh",
 	mesh = "mobs_mc_chicken.b3d",

mods/ENTITIES/mobs_mc/ender_dragon.lua

@@ -7,14 +7,22 @@ local S = minetest.get_translator("mobs_mc")
 mobs:register_mob("mobs_mc:enderdragon", {
 	type = "monster",
 	spawn_class = "hostile",
-	pathfinding = 1,
 	attacks_animals = true,
 	walk_chance = 100,
+	rotate = 270,
+	tilt_fly = true,
+	hostile = true,
+	shoot_arrow = function(self, pos, dir)
+		-- 2-4 damage per arrow
+		local dmg = math.random(2,4)
+		mcl_bows.shoot_arrow("mobs_mc:dragon_fireball", pos, dir, self.object:get_yaw(), self.object, nil, dmg)		
+	end,
 	hp_max = 200,
 	hp_min = 200,
 	xp_min = 500,
 	xp_max = 500,
-	collisionbox = {-2, 3, -2, 2, 5, 2},
+	collisionbox = {-2, 0, -2, 2, 2, 2},
+	eye_height = 1,
 	physical = false,
 	visual = "mesh",
 	mesh = "mobs_mc_dragon.b3d",
@@ -23,6 +31,7 @@ mobs:register_mob("mobs_mc:enderdragon", {
 	},
 	visual_size = {x=3, y=3},
 	view_range = 35,
+	reach = 20,
 	walk_velocity = 6,
 	run_velocity = 6,
 	can_despawn = false,
@@ -132,10 +141,11 @@ mobs:register_arrow("mobs_mc:dragon_fireball", {
 
 	-- node hit, explode
 	hit_node = function(self, pos, node)
-		mobs:boom(self, pos, 2)
+		--mobs:boom(self, pos, 2)
+		mcl_explosions.explode(self.object:get_pos(), 2,{ drop_chance = 1.0 })
 	end
 })
 
 mobs:register_egg("mobs_mc:enderdragon", S("Ender Dragon"), "mobs_mc_spawn_icon_dragon.png", 0, true)
 
-mcl_wip.register_wip_item("mobs_mc:enderdragon")
+--mcl_wip.register_wip_item("mobs_mc:enderdragon")

mods/ENTITIES/mobs_mc/ghast.lua

@@ -114,7 +114,7 @@ mobs:register_arrow("mobs_mc:fireball", {
 		}, nil)
 		]]--
 		--mobs:boom(self, self.object:get_pos(), 1, true)
-		mcl_explosions.explode(self.object:get_pos(), 3,{ drop_chance = 1.0 })
+		mcl_explosions.explode(self.object:get_pos(), 1,{ drop_chance = 1.0 })
 	end,
 
 	hit_mob = function(self, mob)
@@ -123,12 +123,12 @@ mobs:register_arrow("mobs_mc:fireball", {
 			damage_groups = {fleshy = 6},
 		}, nil)
 		--mobs:boom(self, self.object:get_pos(), 1, true)
-		mcl_explosions.explode(self.object:get_pos(), 3,{ drop_chance = 1.0 })
+		mcl_explosions.explode(self.object:get_pos(), 1,{ drop_chance = 1.0 })
 	end,
 
 	hit_node = function(self, pos, node)
 		--mobs:boom(self, pos, 1, true)
-		mcl_explosions.explode(self.object:get_pos(), 3,{ drop_chance = 1.0 })
+		mcl_explosions.explode(self.object:get_pos(), 1,{ drop_chance = 1.0 })
 	end
 })
 

mods/ENTITIES/mobs_mc/wolf.lua

@@ -22,13 +22,15 @@ local wolf = {
 	type = "animal",
 	spawn_class = "passive",
 	can_despawn = true,
+	neutral = true,
 	hp_min = 8,
 	hp_max = 8,
 	xp_min = 1,
 	xp_max = 3,
+	rotate = 270,
 	passive = false,
 	group_attack = true,
-	collisionbox = {-0.3, -0.01, -0.3, 0.3, 0.84, 0.3},
+	collisionbox = {-0.3, -0.00, -0.3, 0.3, 0.85, 0.3},
 	visual = "mesh",
 	mesh = "mobs_mc_wolf.b3d",
 	textures = {
@@ -52,7 +54,7 @@ local wolf = {
 	run_velocity = 3,
 	damage = 4,
 	reach = 2,
-	attack_type = "dogfight",
+	attack_type = "punch",
 	fear_height = 4,
 	follow = mobs_mc.follow.wolf,
 	on_rightclick = function(self, clicker)