how to prevent objects disappearing when they move outside of the room.

[Wabbajackalope]

ok this is a question i asked in a different thread but thought deserved its own.

when an object moves outside of a room it stops being drawn, under normal circumstances this is perfectly normal but if you alter the prospective using d3d_set_projection_ext this will make it possible to see outside the normal 2d boundries and, as a result objects start randomly disappearing.

in the previous thread it mentioned to alter the view of the room, which i have attempted to do using view, border, and port, none of which have proven effective.

does anyone know a work around so that objects will remain visible even once they go off the edge of the screen?

thank you.

 

[flerpyderp]

I don't know how to do what you're trying to achieve, but I'm curious about why your attempts at altering the view did not prove effective. The first thing I wanted to ask was why you need things to leave the room and not just the "edge of the screen".

 

[TheouAegis]

Do the objects just not draw or are they actually getting set to invisible? Can you check that? LOL. In the Predraw event, set visible to !visible?

If there is a function in the manual, I don't know what criteria to search for.

 

[flyingsaucerinvasion]

You should be able to fix this by doing the following...

1) enable a view.
2) set the view (view, not port) size and position to fully encompass everything you want to be visible.
note: you won't actually be using the view to draw anything, because you will be setting a different view and projection using d3d_set_projection_ext.

Alternatively, you could draw your sprites with a 3d model or vertex buffer or by using d3d_draw_floor/wall. These things will not be auto-culled by gamemaker when you draw them outside of the (2d) view.