is the code below can convert into control like is 1st person shooting game?
like w and s to go forward and backward
a and d to go backwards
mouse to turn

Code:
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FUNCTION handle_movement() {
temp.x = -1000;
temp.y = 0;
my.moving = 0;
IF (key_w == 1 && key_s == 0 && key_a == 0 && key_d == 0) { temp.x = camera.pan; }
IF (key_s == 1 && key_w == 0 && key_a == 0 && key_d == 0) { temp.x = camera.pan + 180; }
IF (key_a == 1 && key_s == 0 && key_w == 0 && key_d == 0) { temp.x = camera.pan + 90; }
IF (key_d == 1 && key_s == 0 && key_a == 0 && key_w == 0) { temp.x = camera.pan - 90; }
IF (key_w == 1 && key_a == 1 && key_d == 0 && key_s == 0) { temp.x = camera.pan + 45; }
IF (key_w == 1 && key_d == 1 && key_a == 0 && key_s == 0) { temp.x = camera.pan - 45; }
IF (key_s == 1 && key_a == 1 && key_d == 0 && key_w == 0) { temp.x = camera.pan + 135; }
IF (key_s == 1 && key_d == 1 && key_a == 0 && key_w == 0) { temp.x = camera.pan - 135; }
IF (temp.x != -1000) {
my.moving = 1;
IF (key_shift == 1) { temp.y = 10 * time; } ELSE { temp.y = 15 * time; }
}

IF (my.movement_mode == 0) {
my.move_x = fcos(temp.x,temp.y);
my.move_y = fsin(temp.x,temp.y);
}
IF (my.movement_mode == 1 || my.movement_mode == 2) {
temp.y = fsin((my.animate * 1.2) + 45,15 * time);
my.move_x = fcos(my.pan,temp.y);
my.move_y = fsin(my.pan,temp.y);
temp.y = 0;
IF (temp.x != -1000)
{
temp.y = 1;
}
}

move_mode = ignore_passable | glide;
ent_move(nullvector,my.move_x);


result = trace(vector(my.x,my.y,my.z - my.z_offset),vector(my.x,my.y,my.z - 4000));
IF (result < 0)
{ my.z -= result;
my.velocity_z = 0;
}

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Dude, I can't even read that. If it was structured properly, either:

Code:

---

 
function myFunc()
{
   if(someCondition)
   {
        myVar += 2;
   }
}
 

---

or
Code:

---

 
function myFunc() {
   if(someCondition) {
       myVar += 2;
   }
} 

---

maybe I could read it and answer your question.

On a side note, I prefer the top format, but both are pretty readable.