modules/world: port all actor functions from IP

gamecore/modules/world/baseworld.lua

@@ -16,10 +16,44 @@ function BaseWorld:registerActor(actor)
   table.insert(self.actors, actor)
 end
 
+function World:removeActor(actor)
+  for i,v in ipairs(self.actors) do
+    if v == actor then
+      table.remove(self.actors, i)
+    end
+  end
+end
+
+function World:moveActor(actor, x, y, filter)
+  self.actors[actor].x = x
+  self.actors[actor].y = y
+  -- as the baseworld have no collision function, we return empty collision
+  -- datas, but from the same type than bump2D will return
+  return x, y, {}, 0
+end
+
+function World:queryRect(x, y, w, h)
+  local query = {}
+  local x2, y2 = x + w, y + h
+  for i,v in ipairs(self.actors) do
+    if (v.x >= x) and (v.x + v.w >= x1) and
+       (v.y >= y) and (v.y + v.h >= y1) then
+
+      table.insert(query, v)
+    end
+  end
+
+  return v
+end
+
 function BaseWorld:countActors()
   return #self.actors
 end
 
+function World:getActors()
+  return self.actors
+end
+
 -- UPDATE FUNCTIONS
 -- All update functions