modules/world: add a way to get camera scale and view

gamecore/modules/world/camera.lua

@@ -101,4 +101,22 @@ function CameraSystem:detachView(id)
   end
 end
 
+function CameraSystem:getViewCoordinate(id)
+  local cam = self:getViewCam(id)
+
+  local camx, camy, camh, camw
+  camx = cam.x - (self.views.width/2)
+  camy = cam.y - (self.views.height/2)
+
+  camw = self.views.width
+  camh = self.views.height
+  return camx, camy, camh, camw
+end
+
+function CameraSystem:getViewScale(id)
+  local cam = self:getViewCam(id)
+
+  return cam.scale
+end
+
 return CameraSystem