Something like this maybe ???

Code:

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  vec_set (temp, my.x); 
temp.z -= 10000; 
trace_mode = ignore_me + ignore_passable + use_box+activate_sonar; 		
my.skill30 = trace (my.x, temp)-5;
if(result <= 0 ) 

//place player on ground 
vec_set(VecFrom,my.x); 
vec_set(VecTo,my.x);
VecTo.z -= 30* time; // place player on floor 
						

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