problems in 2.5d

Oke hire goes I am trying to make 2.5d game (isometric) i am using glOrtho because i dont need prespecive that object father apper smaller and so but my problem is that when i start Rotate/ Translate my world things disappear ( i think it has something to do with clipping panel )

but i need z axis for drawing image throw other stuff making appear part of the image is behind other image

i am noob in opengl so pleas help

THX

Make things simpler to understand i want use something line gluPrespectie and gluLookAt but with out that objects further apper smaller

Don’t use ortho, look up something called “parallel projection”.