Movement and path finding improvements.

mods/ENTITIES/mcl_mobs/movement.lua

@@ -392,6 +392,7 @@ function mob_class:do_jump()
 	end
 
 	local pos = self.object:get_pos()
+	local v = self.object:get_velocity()
 	local cbox = self.collisionbox
 
 	local in_water = minetest.get_item_group(node_ok(pos).name, "water") > 0
@@ -406,15 +407,15 @@ function mob_class:do_jump()
 	local yaw = self.object:get_yaw()
 
 	-- where is front
-	local dir_x = -sin(yaw) * (cbox[4] + 0.5)
-	local dir_z =  cos(yaw) * (cbox[4] + 0.5)
+	local dir_x = -sin(yaw) * (cbox[4] + 0.5) + v.x * 0.25
+	local dir_z =  cos(yaw) * (cbox[4] + 0.5) + v.z * 0.25
 
 	-- what is in front of mob?
-	local nod = node_ok({ x = pos.x + dir_x, y = pos.y + 0.5, z = pos.z + dir_z })
+	local nod = node_ok(vector.new(pos.x + dir_x, pos.y + 0.5, pos.z + dir_z))
 
 	-- this is used to detect if there's a block on top of the block in front of the mob.
 	-- If there is, there is no point in jumping as we won't manage.
-	local nodTop = node_ok({ x = pos.x + dir_x, y = pos.y + 1.5, z = pos.z + dir_z }, "air")
+	local nodTop = node_ok(vector.new(pos.x + dir_x, pos.y + 1.5, pos.z + dir_z), "air")
 	-- TODO: also check above the mob itself?
 
 	-- we don't attempt to jump if there's a stack of blocks blocking, unless attacking
@@ -428,16 +429,17 @@ function mob_class:do_jump()
 	end
 
 	local ndef = minetest.registered_nodes[nod.name]
-	if self.walk_chance == 0 or ndef and ndef.walkable or self._can_jump_cliff then
-
-		if minetest.get_item_group(nod.name, "fence") == 0
-		and minetest.get_item_group(nod.name, "fence_gate") == 0
-		and minetest.get_item_group(nod.name, "wall") == 0 then
-
-			local v = self.object:get_velocity()
-
-			v.y = self.jump_height + 0.1 * 3
+	if self.walk_chance ~= 0 and not (ndef and ndef.walkable) and not self._can_jump_cliff then
+		return false
+	end
+	if minetest.get_item_group(nod.name, "fence") ~= 0
+	or minetest.get_item_group(nod.name, "fence_gate") ~= 0
+	or minetest.get_item_group(nod.name, "wall") ~= 0 then
+		self.facing_fence = true
+		return false
+	end
 
+	v.y = self.jump_height + 0.3
 	if in_water then
 		v=vector.multiply(v, vector.new(1.2,1.5,1.2))
 	elseif self._can_jump_cliff then
@@ -445,41 +447,38 @@ function mob_class:do_jump()
 	end
 
 	self:set_animation("jump") -- only when defined
-
 	self.object:set_velocity(v)
 
 	-- when in air move forward
-			minetest.after(0.3, function(self, v)
-				if (not self.object) or (not self.object:get_luaentity()) or (self.state == "die") then
+	local forward = function(self, v)
+		if not self.object or not self.object:get_luaentity() or self.state == "die" then
 			return
 		end
-				self.object:set_acceleration({
-					x = v.x * 2,
-					y = DEFAULT_FALL_SPEED,
-					z = v.z * 2,
-				})
-			end, self, v)
+		self.object:set_acceleration(vector.new(v.x * 2, DEFAULT_FALL_SPEED, v.z * 2))
+	end
+	-- trying multiple time helps mobs jump
+	minetest.after(0.1, forward, self, v)
+	minetest.after(0.2, forward, self, v)
+	minetest.after(0.3, forward, self, v)
 
 	if self.jump_sound_cooloff <= 0 then
 		self:mob_sound("jump")
 		self.jump_sound_cooloff = 0.5
 	end
-		else
-			self.facing_fence = true
-		end
 
 	-- if we jumped against a block/wall 4 times then turn
-		if self.object:get_velocity().x ~= 0 and self.object:get_velocity().z ~= 0 then
-			self.jump_count = (self.jump_count or 0) + 1
-			if self.jump_count == 4 then
-				self:turn_by(PI * (random() - 0.5), 8)
-				self.jump_count = 0
+	if (v.x * v.x + v.z * v.z) < 0.1 then
+		self._jump_count = (self._jump_count or 0) + 1
+		if self._jump_count == 4 then
+			self:turn_by(TWOPI * (random() - 0.5), 8)
+			self._jump_count = 0
+			return false
 		end
+	else
+		self._jump_count = 0
 	end
 	return true
 end
-	return false
-end
 
 -- should mob follow what I'm holding ?
 function mob_class:follow_holding(clicker)
@@ -753,15 +752,10 @@ end
 
 function mob_class:go_to_pos(b)
 	if not self then return end
+	if not b then return end
 	local s = self.object:get_pos()
-	if not b then
-		--self.state = "stand"
-		return end
-	if vector.distance(b,s) < 1 then
-		--self:set_velocity(0)
-		return true
-	end
-	self:turn_in_direction(b.x - s.x, b.z - s.z, 6)
+	if vector.distance(b,s) < 1 then return true end
+	self:turn_in_direction(b.x - s.x, b.z - s.z, 4)
 	self:set_velocity(self.follow_velocity)
 	self:set_animation("walk")
 end

mods/ENTITIES/mcl_mobs/pathfinding.lua

@@ -358,8 +358,8 @@ function mob_class:check_gowp(dtime)
 		self.current_target = nil
 		self.state = "stand"
 		self.order = "stand"
-		self.object:set_velocity({x = 0, y = 0, z = 0})
-		self.object:set_acceleration({x = 0, y = 0, z = 0})
+		self.object:set_velocity(vector.zero())
+		self.object:set_acceleration(vector.zero())
 		if self.callback_arrived then return self.callback_arrived(self) end
 		return true
 	elseif not self.current_target then
@@ -369,13 +369,15 @@ function mob_class:check_gowp(dtime)
 	-- More pathing to be done
 	local distance_to_current_target = 50
 	if self.current_target and self.current_target["pos"] then
-		distance_to_current_target = vector.distance(p,self.current_target["pos"])
+		local dx, dy, dz = self.current_target["pos"].x-p.x, self.current_target["pos"].y-p.y, self.current_target["pos"].z-p.z
+		distance_to_current_target = (dx*dx+dy*dy*0.25+dz*dz)^0.5 -- reduced weight on y
+		--distance_to_current_target = vector.distance(p,self.current_target["pos"])
 	end
 
 	-- 0.6 is working but too sensitive. sends villager back too frequently. 0.7 is quite good, but not with heights
 	-- 0.8 is optimal for 0.025 frequency checks and also 1... Actually. 0.8 is winning
 	-- 0.9 and 1.0 is also good. Stick with unless door open or closing issues
-	if self.waypoints and #self.waypoints > 0 and ( not self.current_target or not self.current_target["pos"] or distance_to_current_target < 0.9 ) then
+	if self.waypoints and #self.waypoints > 0 and ( not self.current_target or not self.current_target["pos"] or distance_to_current_target < 0.8 ) then
 		-- We have waypoints, and are at current_target or have no current target. We need a new current_target.
 		self:do_pathfind_action (self.current_target["action"])
 
@@ -383,6 +385,11 @@ function mob_class:check_gowp(dtime)
 		mcl_log("There after " .. failed_attempts .. " failed attempts. current target:".. minetest.pos_to_string(self.current_target["pos"]) .. ". Distance: " ..  distance_to_current_target)
 
 		self.current_target = table.remove(self.waypoints, 1)
+		-- use smoothing
+		if #self.waypoints > 0 then
+			local curwp, nextwp = self.current_target["pos"], self.waypoints[1]["pos"]
+			self:go_to_pos(vector.new(curwp.x*0.5+nextwp.x*0.5,curwp.y*0.5+nextwp.y*0.5,curwp.z*0.5+nextwp.z*0.5))
+		end
 		self:go_to_pos(self.current_target["pos"])
 		return
 	elseif self.current_target and self.current_target["pos"] then
@@ -397,8 +404,8 @@ function mob_class:check_gowp(dtime)
 			self.waypoints = nil
 			self._target = nil
 			self._pf_last_failed = os.time()
-			self.object:set_velocity({x = 0, y = 0, z = 0})
-			self.object:set_acceleration({x = 0, y = 0, z = 0})
+			self.object:set_velocity(vector.zero())
+			self.object:set_acceleration(vector.zero())
 			return
 		end
 

mods/ENTITIES/mcl_mobs/physics.lua

@@ -303,11 +303,11 @@ function mob_class:check_smooth_rotation(dtime)
 	if self.shaking then
 		yaw = yaw + (random() * 2 - 1) / 72 * dtime
 	end
-	if self.acc then
+	--[[ needed? if self.acc then
 		local change = yaw - initial_yaw
 		local si, co = math.sin(change), math.cos(change)
 		self.acc.x, self.acc.y = co * self.acc.x - si * self.acc.y, si * self.acc.x + co * self.acc.y
-	end
+	end ]]--
 	self.object:set_yaw(yaw)
 	self:update_roll()
 end
@@ -869,7 +869,6 @@ function mob_class:falling(pos, moveresult)
 	local v = self.object:get_velocity()
 	if v then
 		local new_acceleration
-
 		if v.y > 0 then
 			-- apply gravity when moving up
 			new_acceleration = vector.new(0, DEFAULT_FALL_SPEED, 0)