Mobs: Refactor distance calculation
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@ -31,7 +31,6 @@ end
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-- localize math functions
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local pi = math.pi
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local square = math.sqrt
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local sin = math.sin
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local cos = math.cos
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local abs = math.abs
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@ -260,15 +259,6 @@ function mobs:set_animation(self, anim)
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end
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-- calculate distance
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local get_distance = function(a, b)
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local x, y, z = a.x - b.x, a.y - b.y, a.z - b.z
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return square(x * x + y * y + z * z)
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end
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-- check line of sight (BrunoMine)
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local line_of_sight = function(self, pos1, pos2, stepsize)
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@ -293,7 +283,7 @@ local line_of_sight = function(self, pos1, pos2, stepsize)
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local nn = minetest.get_node(pos).name
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-- Target Distance (td) to travel
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local td = get_distance(pos1, pos2)
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local td = vector.distance(pos1, pos2)
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-- Actual Distance (ad) traveled
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local ad = 0
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@ -309,7 +299,7 @@ local line_of_sight = function(self, pos1, pos2, stepsize)
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end
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-- Moves the analyzed pos
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local d = get_distance(pos1, pos2)
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local d = vector.distance(pos1, pos2)
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npos1.x = ((pos2.x - pos1.x) / d * stepsize) + pos1.x
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npos1.y = ((pos2.y - pos1.y) / d * stepsize) + pos1.y
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@ -980,7 +970,7 @@ local entity_physics = function(pos, radius)
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obj_pos = objs[n]:get_pos()
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dist = get_distance(pos, obj_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 = floor((4 / dist) * radius)
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@ -1531,7 +1521,7 @@ local monster_attack = function(self)
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p = player:get_pos()
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sp = s
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dist = get_distance(p, 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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@ -1577,7 +1567,7 @@ local npc_attack = function(self)
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p = obj.object:get_pos()
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sp = s
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local dist = get_distance(p, 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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@ -1665,7 +1655,7 @@ local runaway_from = function(self)
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p.y = p.y + 1
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sp.y = sp.y + 1
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dist = get_distance(p, s)
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dist = vector.distance(p, s)
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-- choose closest player/mpb to runaway from
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@ -1715,7 +1705,7 @@ local follow_flop = function(self)
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for n = 1, #players do
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if get_distance(players[n]:get_pos(), s) < self.view_range
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if vector.distance(players[n]:get_pos(), s) < self.view_range
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and not mobs.invis[ players[n]:get_player_name() ] then
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self.following = players[n]
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@ -1763,7 +1753,7 @@ local follow_flop = function(self)
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if p then
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local dist = get_distance(p, s)
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local dist = vector.distance(p, s)
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-- dont follow if out of range
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if dist > self.view_range then
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@ -2022,7 +2012,7 @@ local do_states = function(self, dtime)
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-- calculate distance from mob and enemy
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local s = self.object:get_pos()
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local p = self.attack:get_pos() or s
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local dist = get_distance(p, s)
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local dist = vector.distance(p, s)
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-- stop attacking if player invisible or out of range
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if dist > self.view_range
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@ -2331,7 +2321,7 @@ local do_states = function(self, dtime)
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p.y = p.y - .5
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s.y = s.y + .5
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local dist = get_distance(p, s)
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local dist = vector.distance(p, s)
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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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