518 lines
12 KiB
Lua
518 lines
12 KiB
Lua
local math, vector, minetest, mcl_mobs = math, vector, minetest, mcl_mobs
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local mob_class = mcl_mobs.mob_class
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-- pathfinding settings
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local enable_pathfinding = true
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local stuck_timeout = 3 -- how long before mob gets stuck in place and starts searching
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local stuck_path_timeout = 10 -- how long will mob follow path before giving up
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-- check if daytime and also if mob is docile during daylight hours
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function mob_class:day_docile()
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if self.docile_by_day == false then
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return false
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elseif self.docile_by_day == true
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and self.time_of_day > 0.2
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and self.time_of_day < 0.8 then
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return true
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end
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end
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-- attack player/mob
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function mob_class:do_attack(player)
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if self.state == "attack" or self.state == "die" then
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return
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end
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self.attack = player
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self.state = "attack"
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-- TODO: Implement war_cry sound without being annoying
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--if random(0, 100) < 90 then
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--self:mob_sound("war_cry", true)
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--end
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end
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-- blast damage to entities nearby
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local function entity_physics(pos,radius)
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radius = radius * 2
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local objs = minetest.get_objects_inside_radius(pos, radius)
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local obj_pos, dist
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for n = 1, #objs do
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obj_pos = objs[n]:get_pos()
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dist = vector.distance(pos, obj_pos)
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if dist < 1 then dist = 1 end
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local damage = math.floor((4 / dist) * radius)
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local ent = objs[n]:get_luaentity()
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-- punches work on entities AND players
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objs[n]:punch(objs[n], 1.0, {
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full_punch_interval = 1.0,
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damage_groups = {fleshy = damage},
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}, pos)
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end
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end
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function mob_class:entity_physics(self,pos,radius) return entity_physics(pos,radius) end
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local los_switcher = false
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local height_switcher = false
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-- path finding and smart mob routine by rnd, line_of_sight and other edits by Elkien3
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function mob_class:smart_mobs(s, p, dist, dtime)
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local s1 = self.path.lastpos
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local target_pos = self.attack:get_pos()
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-- is it becoming stuck?
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if math.abs(s1.x - s.x) + math.abs(s1.z - s.z) < .5 then
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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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local use_pathfind = false
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local has_lineofsight = minetest.line_of_sight(
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{x = s.x, y = (s.y) + .5, z = s.z},
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{x = target_pos.x, y = (target_pos.y) + 1.5, z = target_pos.z}, .2)
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-- im stuck, search for path
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if not has_lineofsight then
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if los_switcher == true then
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use_pathfind = true
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los_switcher = false
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end -- cannot see target!
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else
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if los_switcher == false then
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los_switcher = true
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use_pathfind = false
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minetest.after(1, function(self)
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if not self.object:get_luaentity() then
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return
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end
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if has_lineofsight then self.path.following = false end
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end, self)
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end -- can see target!
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end
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if (self.path.stuck_timer > stuck_timeout and not self.path.following) then
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use_pathfind = true
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self.path.stuck_timer = 0
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minetest.after(1, function(self)
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if not self.object:get_luaentity() then
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return
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end
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if has_lineofsight then self.path.following = false end
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end, self)
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end
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if (self.path.stuck_timer > stuck_path_timeout and self.path.following) then
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use_pathfind = true
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self.path.stuck_timer = 0
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minetest.after(1, function(self)
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if not self.object:get_luaentity() then
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return
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end
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if has_lineofsight then self.path.following = false end
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end, self)
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end
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if math.abs(vector.subtract(s,target_pos).y) > self.stepheight then
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if height_switcher then
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use_pathfind = true
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height_switcher = false
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end
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else
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if not height_switcher then
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use_pathfind = false
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height_switcher = true
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end
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end
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if use_pathfind then
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-- lets try find a path, first take care of positions
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-- since pathfinder is very sensitive
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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.z = math.floor(s.z + 0.5)
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local 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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local p1 = self.attack:get_pos()
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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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local dropheight = 12
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if self.fear_height ~= 0 then dropheight = self.fear_height end
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local jumpheight = 0
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if self.jump and self.jump_height >= 4 then
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jumpheight = math.min(math.ceil(self.jump_height / 4), 4)
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elseif self.stepheight > 0.5 then
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jumpheight = 1
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end
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self.path.way = minetest.find_path(s, p1, 16, jumpheight, dropheight, "A*_noprefetch")
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self.state = ""
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do_attack(self, self.attack)
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-- no path found, try something else
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if not self.path.way then
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self.path.following = false
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-- lets make way by digging/building if not accessible
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if self.pathfinding == 2 and mobs_griefing then
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-- is player higher than mob?
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if s.y < p1.y then
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-- build upwards
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if not minetest.is_protected(s, "") then
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local ndef1 = minetest.registered_nodes[self.standing_in]
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if ndef1 and (ndef1.buildable_to or ndef1.groups.liquid) then
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minetest.set_node(s, {name = mcl_mobs.fallback_node})
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end
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end
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local sheight = math.ceil(self.collisionbox[5]) + 1
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-- assume mob is 2 blocks high so it digs above its head
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s.y = s.y + sheight
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-- remove one block above to make room to jump
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if not minetest.is_protected(s, "") then
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local node1 = node_ok(s, "air").name
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local ndef1 = minetest.registered_nodes[node1]
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if node1 ~= "air"
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and node1 ~= "ignore"
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and ndef1
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and not ndef1.groups.level
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and not ndef1.groups.unbreakable
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and not ndef1.groups.liquid then
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minetest.set_node(s, {name = "air"})
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minetest.add_item(s, ItemStack(node1))
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end
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end
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s.y = s.y - sheight
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self.object:set_pos({x = s.x, y = s.y + 2, z = s.z})
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else -- dig 2 blocks to make door toward player direction
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local yaw1 = self.object:get_yaw() + math.pi / 2
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local p1 = {
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x = s.x + math.cos(yaw1),
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y = s.y,
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z = s.z + math.sin(yaw1)
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}
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if not minetest.is_protected(p1, "") then
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local node1 = node_ok(p1, "air").name
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local ndef1 = minetest.registered_nodes[node1]
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if node1 ~= "air"
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and node1 ~= "ignore"
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and ndef1
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and not ndef1.groups.level
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and not ndef1.groups.unbreakable
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and not ndef1.groups.liquid then
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minetest.add_item(p1, ItemStack(node1))
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minetest.set_node(p1, {name = "air"})
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end
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p1.y = p1.y + 1
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node1 = node_ok(p1, "air").name
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ndef1 = minetest.registered_nodes[node1]
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if node1 ~= "air"
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and node1 ~= "ignore"
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and ndef1
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and not ndef1.groups.level
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and not ndef1.groups.unbreakable
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and not ndef1.groups.liquid then
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minetest.add_item(p1, ItemStack(node1))
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minetest.set_node(p1, {name = "air"})
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end
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end
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end
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end
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-- will try again in 2 seconds
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self.path.stuck_timer = stuck_timeout - 2
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elseif s.y < p1.y and (not self.fly) then
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do_jump(self) --add jump to pathfinding
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self.path.following = true
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-- Yay, I found path!
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-- TODO: Implement war_cry sound without being annoying
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--self:mob_sound("war_cry", true)
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else
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self:set_velocity(self.walk_velocity)
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-- follow path now that it has it
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self.path.following = true
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end
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end
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end
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-- specific attacks
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local specific_attack = function(list, what)
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-- no list so attack default (player, animals etc.)
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if list == nil then
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return true
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end
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-- found entity on list to attack?
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for no = 1, #list do
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if list[no] == what then
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return true
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end
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end
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return false
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end
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-- find someone to attack
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function mob_class:monster_attack()
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if not damage_enabled
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or self.passive ~= false
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or self.state == "attack"
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or self:day_docile() then
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return
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end
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local s = self.object:get_pos()
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local p, sp, dist
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local player, obj, min_player
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local type, name = "", ""
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local min_dist = self.view_range + 1
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local objs = minetest.get_objects_inside_radius(s, self.view_range)
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local blacklist_attack = {}
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for n = 1, #objs do
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if not objs[n]:is_player() then
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obj = objs[n]:get_luaentity()
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if obj then
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player = obj.object
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name = obj.name or ""
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end
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if obj and obj.type == self.type and obj.passive == false and obj.state == "attack" and obj.attack then
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table.insert(blacklist_attack, obj.attack)
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end
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end
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end
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for n = 1, #objs do
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if objs[n]:is_player() then
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if mcl_mobs.invis[ objs[n]:get_player_name() ] or (not self:object_in_range(objs[n])) then
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type = ""
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elseif (self.type == "monster" or self._aggro) then
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player = objs[n]
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type = "player"
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name = "player"
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end
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else
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obj = objs[n]:get_luaentity()
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if obj then
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player = obj.object
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type = obj.type
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name = obj.name or ""
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end
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end
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-- find specific mob to attack, failing that attack player/npc/animal
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if specific_attack(self.specific_attack, name)
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and (type == "player" or ( type == "npc" and self.attack_npcs )
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or (type == "animal" and self.attack_animals == true)) then
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p = player:get_pos()
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sp = s
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dist = vector.distance(p, s)
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-- aim higher to make looking up hills more realistic
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p.y = p.y + 1
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sp.y = sp.y + 1
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local attacked_p = false
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for c=1, #blacklist_attack do
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if blacklist_attack[c] == player then
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attacked_p = true
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end
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end
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-- choose closest player to attack
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if dist < min_dist
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and not attacked_p
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and self:line_of_sight( sp, p, 2) == true then
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min_dist = dist
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min_player = player
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end
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end
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end
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if not min_player and #blacklist_attack > 0 then
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min_player=blacklist_attack[math.random(#blacklist_attack)]
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end
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-- attack player
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if min_player then
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self:do_attack(min_player)
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end
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end
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-- npc, find closest monster to attack
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function mob_class:npc_attack()
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if self.type ~= "npc"
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or not self.attacks_monsters
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or self.state == "attack" then
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return
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end
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local p, sp, obj, min_player
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local s = self.object:get_pos()
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local min_dist = self.view_range + 1
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local objs = minetest.get_objects_inside_radius(s, self.view_range)
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for n = 1, #objs do
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obj = objs[n]:get_luaentity()
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if obj and obj.type == "monster" then
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p = obj.object:get_pos()
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sp = s
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local dist = vector.distance(p, s)
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-- aim higher to make looking up hills more realistic
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p.y = p.y + 1
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sp.y = sp.y + 1
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if dist < min_dist
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and self:line_of_sight( sp, p, 2) == true then
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min_dist = dist
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min_player = obj.object
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end
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end
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end
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if min_player then
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self:do_attack(min_player)
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end
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end
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-- dogshoot attack switch and counter function
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function mob_class:dogswitch(dtime)
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-- switch mode not activated
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if not self.dogshoot_switch
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or not dtime then
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return 0
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end
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self.dogshoot_count = self.dogshoot_count + dtime
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if (self.dogshoot_switch == 1
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and self.dogshoot_count > self.dogshoot_count_max)
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or (self.dogshoot_switch == 2
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and self.dogshoot_count > self.dogshoot_count2_max) then
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self.dogshoot_count = 0
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if self.dogshoot_switch == 1 then
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self.dogshoot_switch = 2
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else
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self.dogshoot_switch = 1
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end
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end
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return self.dogshoot_switch
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end
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-- no damage to nodes explosion
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function mob_class:safe_boom(pos, strength)
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minetest.sound_play(self.sounds and self.sounds.explode or "tnt_explode", {
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pos = pos,
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gain = 1.0,
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max_hear_distance = self.sounds and self.sounds.distance or 32
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}, true)
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local radius = strength
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entity_physics(pos, radius)
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mcl_mobs.effect(pos, 32, "mcl_particles_smoke.png", radius * 3, radius * 5, radius, 1, 0)
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end
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-- make explosion with protection and tnt mod check
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function mob_class:boom(pos, strength, fire)
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if mobs_griefing and not minetest.is_protected(pos, "") then
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mcl_explosions.explode(pos, strength, { drop_chance = 1.0, fire = fire }, self.object)
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else
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mcl_mobs.mob_class.safe_boom(self, pos, strength) --need to call it this way bc self is the "arrow" object here
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end
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-- delete the object after it punched the player to avoid nil entities in e.g. mcl_shields!!
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self.object:remove()
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end
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function mob_class:check_aggro(dtime)
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if not self._aggro or not self.attack then return end
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if not self._check_aggro_timer or self._check_aggro_timer > 5 then
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self._check_aggro_timer = 0
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if not self.attack:get_pos() or vector.distance(self.attack:get_pos(),self.object:get_pos()) > 128 then
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self._aggro = nil
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self.attack = nil
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self.state = "stand"
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end
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end
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self._check_aggro_timer = self._check_aggro_timer + dtime
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end
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