modules/world: scissor the view when attaching the camera

gamecore/modules/world/camera.lua

@@ -177,7 +177,9 @@ function CameraSystem:attachView(id)
   if (id ~= nil) then
     local cam = self:getViewCam(id)
 
+    local viewx, viewy, vieww, viewh = self:getOnScreenViewCoordinate(id)
     cam:attach()
+    love.graphics.setScissor(viewx, viewy, vieww, viewh)
   end
 end
 
@@ -185,6 +187,7 @@ function CameraSystem:detachView(id)
   if (id ~= nil) then
     local cam = self:getViewCam(id)
 
+    love.graphics.setScissor( )
     cam:detach()
   end
 end