chore: put automove in physics mixin

Fixes #54

birb/modules/world/actors/actor2D.lua

@@ -61,21 +61,10 @@ end
 -- PHYSICS FUNCTIONS
 -- Handle movement and collisions.
 
-function Actor2D:autoMove(dt)
-  self:updateHitboxes()
-  self.onGround = false
-  self:applyGravity(dt)
-
+function Actor2D:moveToFuturePosition(dt)
   local dx, dy = self:getFuturePosition(dt)
-  local newx, newy, cols, colNumber = self:move(dx, dy)
-
-  -- apply after the movement the friction, until the player stop
-  -- note: the friction is applied according to the delta time,
-  -- thus the friction should be how much speed is substracted in 1 second
-
-  self:solveAllCollisions(cols)
-
-  self:applyFriction(dt)
+  local _, _, cols, colNumber = self:move(dx, dy)
+  return cols, colNumber
 end
 
 function Actor2D:changeSpeedToCollisionNormal(normal)

birb/modules/world/actors/actor3D.lua

@@ -71,21 +71,10 @@ end
 -- PHYSICS FUNCTIONS
 -- Handle movement and collisions.
 
-function Actor3D:autoMove(dt)
-  self:updateHitboxes()
-  self.onGround = false
-  self:applyGravity(dt)
-
+function Actor3D:moveToFuturePosition(dt)
   local dx, dy, dz = self:getFuturePosition(dt)
-  local newx, newy, newz, cols, colNumber = self:move(dx, dy, dz)
-
-  -- apply after the movement the friction, until the player stop
-  -- note: the friction is applied according to the delta time,
-  -- thus the friction should be how much speed is substracted in 1 second
-
-  self:solveAllCollisions(cols)
-
-  self:applyFriction(dt)
+  local _, _, _, cols, colNumber = self:move(dx, dy, dz)
+  return cols, colNumber
 end
 
 function Actor3D:changeSpeedToCollisionNormal(normal)

birb/modules/world/actors/mixins/physics.lua

@@ -127,9 +127,19 @@ function PhysicalActor:checkGround()
 end
 
 function PhysicalActor:autoMove(dt)
-    -- The base actor don't have coordinate
-    -- so the autoMove is only usefull to its
-    -- 2D and 3D childrens
+    self:updateHitboxes()
+    self.onGround = false
+    self:applyGravity(dt)
+
+    local cols, colNumber = self:moveToFuturePosition(dt)
+
+    -- apply after the movement the friction, until the player stop
+    -- note: the friction is applied according to the delta time,
+    -- thus the friction should be how much speed is substracted in 1 second
+
+    self:solveAllCollisions(cols)
+
+    self:applyFriction(dt)
 end
 
 -- HITBOX FUNCTIONS