function to improve entities moving on collisions and fixed accordingly

made math.round()
changed vector() and fixed accordingly

code/entities/fairy.lua

@@ -34,7 +34,6 @@ function Fairy:new(x,y)
 end
 
 function Fairy:doLogic()
-
 	if self:checkVisionLine(main_player,self.vision_range) then
 
 		self.target.x = main_player.pos.x + main_player.target_offset.x
@@ -63,31 +62,19 @@ function Fairy:doLogic()
 
 	local distance_x = self.target.x - self.pos.x
 	local distance_y = self.target.y - self.pos.y
-	local angle = getAngleFromVector(distance_x,distance_y)
+	local angle = getAngleFromVector(vector(distance_x,distance_y))
 	local distance = math.sqrt(distance_x ^ 2 + distance_y ^ 2)
 
 	if distance < self.range then
-		self.vel.x = self.vel.x * 0.9
-		self.vel.y = self.vel.y * 0.9
+		local random_x = math.random(-1, 1)
+		local random_y = math.random(-1, 1)
+		self.vel.x = self.vel.x * 0.9 + random_x/10
+		self.vel.y = self.vel.y * 0.9 + random_y/10
 	else
-		self.vel.x = math.cos(angle)*self.speed
-		self.vel.y = math.sin(angle)*self.speed
-	end
-	self.particle_timer = self.particle_timer + 1
-	if self.particle_timer >= self.particle_time then
-		self.particle_timer = 0
-
-		local particle_data = {
-			animation = animation.particle.simple,
-			animation_speed = 1,
-			sprite_tint = hex2rgb("#fed100"),
-			sprite_alpha_fade = true,
-			direction = angle-math.rad(180+math.random(60)-30),
-			speed = 0.8*(distance/50),
-			speed_increase = -0.01,
-			time = 0.75
-		}
-		Particle:new(self.pos.x,self.pos.y,particle_data)
+		local random_x = math.random(-6, 6)
+		local random_y = math.random(-6, 6)
+		self.vel.x = math.cos(angle)*self.speed + random_x/10
+		self.vel.y = math.sin(angle)*self.speed + random_y/10
 	end
 end
 
@@ -95,19 +82,42 @@ function Fairy:handleAnimation()
 	self.body:animate()
 	--if self:isCollidingWith(main_player) then self.sprite_tint = {1,0,0} else self.sprite_tint = {1,1,1} end
 	self:draw(self.body)
+
+	self.particle_timer = self.particle_timer + 1
+	if self.particle_timer >= self.particle_time then
+		local vector = vector(self.vel.x,self.vel.y)
+		local angle = getAngleFromVector(vector)
+		self.particle_timer = 0
+		local particle_data = {
+			animation = animation.particle.simple,
+			animation_speed = 1,
+			sprite_tint = hex2rgb("#fed100"),
+			sprite_alpha_fade = true,
+			direction = angle-math.rad(180+math.random(60)-30),
+			speed = 1,
+			speed_increase = -0.01,
+			time = 0.75
+		}
+		Particle:new(self.pos.x,self.pos.y,particle_data)
+	end
 end
 
 function Fairy:doPhysics()
-	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
-
-	self:moveWithCollision()
-	self.vel.x = 0
-	self.vel.y = 0
-
+	-- horizontal collision
+	self:moveX(
+		self.vel.x,
+		function()
+			self.vel.x = 0
+		end
+	)
+	-- vertical collision
+	self:moveY(
+		self.vel.y,
+		function()
+			self.vel.y = 0
+		end
+	)
+	-- final position
 	self:adjustLight()
 end