Ok, I'll write it in here for you ^^

Code:
VECTOR targetpos;

function bullet()
{
VECTOR ziel;

vec_set(ziel,targetpos);	
vec_sub(ziel,my.x);
vec_to_angle(my.pan,ziel); //bullet looks at the target :)

while(my)
{
c_move(my,vector(30*time_step,0,0),nullvector,IGNORE_SPRITES + IGNORE_PASSABLE + IGNORE_ME); //and shoots

}}


function player()
{
while(my)
{

vec_set(my.skill7,vector(10000,0,0));
vec_rotate(my.skill7,camera.pan);
vec_add(my.skill7,camera.x);
my.skill6 = c_trace(camera.x,my.skill7,IGNORE_SPRITES + IGNORE_PASSABLE);
if(my.skill6==0)
vec_set(my.skill10,vector(10000,0,0));
else
vec_set(my.skill10,vector(my.skill6,0,0));
vec_rotate(my.skill10,camera.pan);
vec_add(my.skill10,camera.x); //my.skill10 is now the vector from the target

vec_set(targetpos,my.skill10); //targetpos is now the vector from the target

if(key_space) //if you press the space key
ent_create("bullet.mdl",my.x,bullet); //create bullet

wait(1);
}}


It's not tested (I changed it a bit for a better appreciation)
Hope you can work with it ^^

Hilf mir, dir zu helfen!