if(whichpatchx>0&&whichpatchz>0&&whichpatchx<subdivision&&whichpatchz<subdivision)
if(terrain.patchobjectnum[whichpatchx][whichpatchz]){
for(j=0;j<terrain.patchobjectnum[whichpatchx][whichpatchz];j++){
if(whichpatchx>0&&whichpatchz>0&&whichpatchx<subdivision&&whichpatchz<subdivision)
if(terrain.patchobjectnum[whichpatchx][whichpatchz]){
for(j=0;j<terrain.patchobjectnum[whichpatchx][whichpatchz];j++){