var camera_distance = 200; //How far away the initial distance is.
var temp;
VECTOR* tempV = {x=0;y=0;z=0;}
var fade_start = 90; //at what distance to start fading
var fade_end = 60; //at what distance to end the fading
var fade_toggle = 1; //0 = off; 1 = on
//////////////////////////////
//Stable/rigid camera collision
//////////////////////////////
function handle_camera()
{
camera_distance -= mickey.z * time_step; //middle mouse scroll
camera_distance = clamp(camera_distance, 0, 700); //put a clamp on the total camera distance for mouse scrolling
camera.pan -= (key_cul - key_cur) * 12 * time_step;
camera.tilt += (key_cud - key_cuu) * 8 * time_step;
camera.tilt = clamp(camera.tilt, -60, -10); //I like putting clamps on the amount of camera tilt also
temp = fcos(camera.tilt, -camera_distance);
vec_set(camera.x, vector(my.x + fcos(camera.pan, temp),my.y + fsin(camera.pan, temp),my.z + 35 + fsin(camera.tilt, -camera_distance)));
vec_diff(tempV.x, camera.x, my.x); //find the vector from the player to the camera
vec_normalize(tempV.x, 16); //get the magnitude of it's vector to 16 quants and store it in temp
vec_add(tempV.x, camera.x); //add the vector (from player to camera) of a magnitude of 16 quants and add it to the camera's position.
result = c_trace(my.x, tempV.x, IGNORE_ME|IGNORE_PASSABLE); //from the player trace to 16 quants behind the camera.
if(result > 0) //c_trace returns a 1 if polygon target is hit
{
vec_diff(tempV.x, my.x, target.x); //find the vector from the point the trace hit to the player
vec_normalize(tempV.x, 16); //get the magnitude of this vector to 16 quants and store in temp
vec_set(camera.x, target.x); //place the camera at the trace hit point
vec_add(camera.x, tempV.x); //move the camera away from the wall by the vector temp, 16 quants towards the player
} //start the alpha fade on the character for zooming in and out ***********************
if(fade_toggle == 1) {
vec_diff(tempV.x, my.x, camera.x); //get the difference between me and camera and copy it to tempV
if(fade_start > 0) {
tempV.x = vec_length(tempV.x); // distance from camera to target
if(tempV.x < fade_start) {
set(my, TRANSLUCENT); // fade to zero depending distance to fade end
reset(my, SHADOW);
//NOTE: use 1st max to avoid negative alpha
//use 2nd max to avoid dreaded divide by zero
my.alpha = 100 * maxv(0, ((tempV.x - fade_end) / maxv(1,(fade_start - fade_end))));
}
else {
reset(my, TRANSLUCENT);
set(my, SHADOW);
}
}//endif fade_start
}//endif fade_toggle == 1
}//endfunction
