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update mobs mod (add pathfinding) https://github.com/MinetestForFun/server-minetestforfun/issues/393
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@ -28,6 +28,7 @@ This mod contains the following additions:
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Changelog:
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1.26- Pathfinding feature added thanks to rnd, when monsters attack they become scary smart in finding you :)
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1.25- Mobs no longer spawn within 12 blocks of player or despawn within same range, spawners now have player detection, Code tidy and tweak.
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1.24- Added feature where certain animals run away when punched (runaway = true in mob definition)
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1.23- Added mob spawner block for admin to setup spawners in-game (place and right click to enter settings)
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@ -1,4 +1,4 @@
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-- Mobs Api (2nd February 2016)
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-- Mobs Api (8th February 2016)
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mobs = {}
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mobs.mod = "redo"
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@ -10,6 +10,11 @@ local creative = minetest.setting_getbool("creative_mode")
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local spawn_protected = tonumber(minetest.setting_get("mobs_spawn_protected")) or 1
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local remove_far = minetest.setting_getbool("remove_far_mobs")
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-- pathfinding settings
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local enable_pathfinding = true
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local stuck_timeout = 5 -- how long before mob gets stuck in place and starts searching
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local stuck_path_timeout = 15 -- how long will mob follow path before giving up
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-- internal functions
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local pi = math.pi
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@ -1453,6 +1458,32 @@ minetest.register_entity(name, {
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end
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-- rnd: new movement direction
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if self.path.stuck
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and self.path.way then
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-- no paths longer than 50
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if #self.path.way > 50 then
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self.path.stuck = false
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return
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end
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local p1 = self.path.way[1]
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if not p1 then
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self.path.stuck = false
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return
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end
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if math.abs(p1.x-s.x) + math.abs(p1.z - s.z) < 0.75 then
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-- reached waypoint, remove it from queue
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table.remove(self.path.way, 1)
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end
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-- set new temporary target
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p = {x = p1.x, y = p1.y, z = p1.z}
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end
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local vec = {
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x = p.x - s.x,
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y = p.y - s.y,
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@ -1474,6 +1505,86 @@ minetest.register_entity(name, {
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-- move towards enemy if beyond mob reach
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if dist > self.reach then
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-- PATH FINDING by rnd
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if enable_pathfinding then
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local s1 = self.path.lastpos
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if math.abs(s1.x - s.x) + math.abs(s1.z - s.z) < 2 then
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-- rnd: almost standing still, to do: insert path finding here
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self.path.stuck_timer = self.path.stuck_timer + dtime
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else
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self.path.stuck_timer = 0
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end
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self.path.lastpos = {x = s.x, y = s.y, z = s.z}
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if (self.path.stuck_timer > stuck_timeout and not self.path.stuck)
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or (self.path.stuck_timer > stuck_path_timeout and self.path.stuck) then
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-- im stuck, search for path
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self.path.stuck = true
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local sheight = self.collisionbox[5] - self.collisionbox[2]
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-- round position to center of node to avoid stuck in walls,
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-- also adjust height for player models!
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s.x = math.floor(s.x + 0.5)
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s.y = math.floor(s.y + 0.5) - sheight
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s.z = math.floor(s.z + 0.5)
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local ssight, sground
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ssight, sground = minetest.line_of_sight(s,
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{x = s.x, y = s. y - 4, z = s.z}, 1)
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-- determine node above ground
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if not ssight then
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s.y = sground.y + 1
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end
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--minetest.chat_send_all("stuck at " .. s.x .." " .. s.y .. " " .. s.z .. ", calculating path")
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local p1 = self.attack:getpos()
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p1.x = math.floor(p1.x + 0.5)
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p1.y = math.floor(p1.y + 0.5)
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p1.z = math.floor(p1.z + 0.5)
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--minetest.find_path(pos1, pos2, searchdistance, max_jump, max_drop, algorithm)
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self.path.way = minetest.find_path(s, p1, 16, 2, 6, "A*_noprefetch")
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if not self.path.way then
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self.path.stuck = false
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-- can't find path, play sound
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if self.sounds.random then
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minetest.sound_play(self.sounds.random, {
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object = self.object,
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max_hear_distance = self.sounds.distance
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})
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end
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else
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-- found path, play sound
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if self.sounds.attack then
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minetest.sound_play(self.sounds.attack, {
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object = self.object,
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max_hear_distance = self.sounds.distance
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})
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end
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--minetest.chat_send_all("found path with length " .. #self.path.way);
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end
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self.path.stuck_timer = 0
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end -- END if pathfinding enabled
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end
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-- END PATH FINDING
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-- jump attack
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if (self.jump
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and get_velocity(self) <= 0.5
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@ -1519,6 +1630,9 @@ minetest.register_entity(name, {
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})
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end
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-- rnd: not stuck
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self.path.stuck = false
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-- punch player
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self.attack:punch(self.object, 1.0, {
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full_punch_interval = 1.0,
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@ -1650,10 +1764,16 @@ minetest.register_entity(name, {
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local v = self.object:getvelocity()
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local r = 1.4 - math.min(punch_interval, 1.4)
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local kb = r * 5
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local up = 2
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-- if already in air then dont go up anymore when hit
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if v.y > 0 then
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up = 0
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end
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self.object:setvelocity({
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x = (dir.x or 0) * kb,
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y = 2,
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y = up,
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z = (dir.z or 0) * kb
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})
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@ -1689,15 +1809,16 @@ minetest.register_entity(name, {
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self.following = nil
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end
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-- attack puncher and call other mobs for help
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if self.passive == false
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and self.child == false
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and hitter:get_player_name() ~= self.owner then
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if self.state ~= "attack" then
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--if self.state ~= "attack" then
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-- attack whoever punched mob
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self.state = ""
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do_attack(self, hitter)
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end
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--end
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-- alert others to the attack
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local obj = nil
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@ -1791,6 +1912,14 @@ minetest.register_entity(name, {
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self.health = math.random (self.hp_min, self.hp_max)
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end
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-- rnd: pathfinding init
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self.path = {}
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self.path.way = {} -- path to follow, table of positions
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self.path.lastpos = {x = 0, y = 0, z = 0}
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self.path.stuck = false
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self.path.stuck_timer = 0 -- if stuck for too long search for path
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-- end init
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self.object:set_hp(self.health)
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self.object:set_armor_groups({fleshy = self.armor})
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self.old_y = self.object:getpos().y
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@ -2108,7 +2237,8 @@ function mobs:register_arrow(name, def)
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local node = node_ok(pos).name
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if minetest.registered_nodes[node].walkable then
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--if minetest.registered_nodes[node].walkable then
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if node ~= "air" then
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self.hit_node(self, pos, node)
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