Hi guys,
I am planning to have large world, possibly hundreds of thousands polygons in total. So, I believe I need to load/unload part of the world during runtime. Do you know any best way to support this? and how do I do this?

My plan is to use a predefined collision solids. Whenever you touch the collision solids, you will load some model and unload some model, i.e.

if (collision with collision sphere):
loadModel(“somePartOfTheWorld”)
prepareScene for the new loaded model
unloadModel(“someOtherPartOfTheWorld”)

Do you have better ideas/suggestion? Btw, is there any way that Panda can display the statistics of current number of polygons displayed on the screen?

Thanks in advance!

regards,
tep

first for the correct loading command

load

model = loader.loadModel(‘model.egg’)

unload

model.detachNode()

or

model.removeNode()

The way i have used in the jungle engine is to keep a list of models, which are loaded if the player is close to the position. (Actually the object positions are calculated procedurally in the jungle engine, but that isnt really a big difference)
Little object are only shown in a close range, larger objects are shown in a larger radius.

the calculate the number of polygons:

render.analyze()

you can also call that on any node you have, which only calculates the number of polygons below this node

mode.analyze()

Note that collision detection is way more time-consuming then other ways, like culling (near and far plane).

i hope this helps a bit

Thanks for the reply It is very insightful!

I am just wondering, instead of removing the node or detaching the node… can we just hide it and show it when needed?

Thanks a lot!

regards,
tep