Cleaned collisions.lua, objobjects.lua. Fixed level optimization typo. Added fairy FCS (altitude hold).

data/scripts/entities/fairy.lua

@@ -5,9 +5,11 @@ Fairy = Entity:New(x,y)
 
   -- behaviour
  	o.pos = {x = x, y = y}
-  o.speed = 1
+  o.speed = 1.4
   o.range = 20
+  o.vision_range = 120
   o.target = {x = x, y = y}
+  o.hover_distance = 60
 
   -- animations
   o.body = Animation:New(animation.fairy.flying)
@@ -32,9 +34,30 @@ Fairy = Entity:New(x,y)
 
 function Fairy:Smart()
 
-  if self:CheckVisionLine(main_Player) then
+  if self:CheckVisionLine(main_Player,self.vision_range) then
+
     self.target.x = main_Player.pos.x + main_Player.target_offset.x
     self.target.y = main_Player.pos.y + main_Player.target_offset.y
+
+    local below = 1
+    while not isThereObjectAt(
+      self.target.x,
+      self.target.y + below * game.scale,
+      LoadedObjects.Collisions
+    ) do
+      below = below + 1
+      if below >= self.hover_distance then break end
+    end
+    local top = 1
+    while not isThereObjectAt(
+      self.target.x,
+      self.target.y - top * game.scale,
+      LoadedObjects.Collisions
+    ) do
+      top = top + 1
+      if top >= self.hover_distance then break end
+    end
+    self.target.y = self.target.y - top + below
   end
 
   local distance_x = self.target.x - self.pos.x
@@ -55,16 +78,12 @@ function Fairy:Smart()
 
     local particle_data = {
       animation = animation.particle.simple,
-      sprite_tint = HEX2RGB("#fe00d1"),
+      sprite_tint = HEX2RGB("#fed100"),
       direction = angle-math.rad(180+math.random(60)-30),
       speed = 0.8*(distance/50),
       speed_increase = -0.01,
     }
-    Particle:New(
-      self.pos.x,
-      self.pos.y,
-      particle_data
-    )
+    Particle:New(self.pos.x,self.pos.y,particle_data)
   end
 end
 
@@ -75,17 +94,20 @@ function Fairy:HandleAnimation()
 end
 
 function Fairy:DoPhysics()
-  local random_x = math.random(-2, 2)/10
-  local random_y = math.random(-2, 2)/10
+  local random_x = math.random(-4, 4)/10
+  local random_y = math.random(-4, 4)/10
+
   self.vel.x = self.vel.x + random_x
   self.vel.y = self.vel.y + random_y
-  -- move
 
   self:CollisionMove()
+  self.vel.x = 0
+  self.vel.y = 0
+
   self:LightAdjust()
 end
 
 function Fairy:Debug()
   Entity.Debug(self)
-  self:CheckVisionLineDebug(main_Player)
+  self:CheckVisionLineDebug(main_Player,self.vision_range)
 end