i dont know what you did but you need to call the clip_it fucntion run it 1 time after a level_load and dont add stuff

and you need to add this to the grass action/function
i dont have a line "my.pan=sin(lv_sin)*lv_power" so if it still doesnt work post here you script

while(1)
{
if(vec_dist(my.x,camera.x) > clip_dist)
{my.flag1 = on;}
else{my.flag1 = off;}
wait(1);
}