// hud_show_lock_indicator() will display the lock indicator for homing missiles
void hud_show_lock_indicator(float frametime)
{
int target_objnum, sx, sy;
object *targetp;
if (!Players[Player_num].lock_indicator_visible){
return;
}
target_objnum = Player_ai->target_objnum;
Assert(target_objnum != -1);
targetp = &Objects[target_objnum];
// check to see if there are any missile to fire.. we don't want to show the
// lock indicator if there are missiles to fire.
if ( !ship_secondary_bank_has_ammo(Player_obj->instance) ) {
return;
}
hud_set_iff_color(targetp);
// nprintf(("Alan","lockx: %d, locky: %d TargetX: %d, TargetY: %d\n", Players[Player_num].lock_indicator_x, Players[Player_num].lock_indicator_y, Player->current_target_sx, Player->current_target_sy));
if (Player_ai->current_target_is_locked) {
sx = Player->current_target_sx;
sy = Player->current_target_sy;
// show the rotating triangles if target is locked
hud_draw_lock_triangles(sx, sy, frametime);
} else {
sx = Players[Player_num].lock_indicator_x;
sy = Players[Player_num].lock_indicator_y;
}
// show locked indicator
/*
if ( Lock_gauge.first_frame >= 0 ) {
gr_set_bitmap(Lock_gauge.first_frame);
gr_aabitmap(sx - Lock_gauge_half_w[gr_screen.res], sy - Lock_gauge_half_h[gr_screen.res]);
} else {
hud_draw_diamond(sx, sy, Lock_target_box_width[gr_screen.res], Lock_target_box_height[gr_screen.res]);
}
*/
Lock_gauge.sx = sx - Lock_gauge_half_w[gr_screen.res];
Lock_gauge.sy = sy - Lock_gauge_half_h[gr_screen.res];
if(Player_ai->current_target_is_locked){
Lock_gauge.time_elapsed = 0.0f;
hud_anim_render(&Lock_gauge, 0.0f, 1);
} else {
hud_anim_render(&Lock_gauge, frametime, 1);
}
}
// hud_show_lock_indicator() will display the lock indicator for homing missiles.
// lock_point_pos should be the world coordinates of the target being locked. Assuming all the
// necessary locking calculations are done for this frame, this function will compute
// where the indicator should be relative to the player's viewpoint and will render accordingly.
void hud_show_lock_indicator(float frametime, vec3d* lock_point_pos)
{
int target_objnum, sx, sy;
object* targetp;
vertex lock_point;
if (!Players[Player_num].lock_indicator_visible)
{
return;
}
target_objnum = Player_ai->target_objnum;
Assert(target_objnum != -1);
targetp = &Objects[target_objnum];
// check to see if there are any missile to fire.. we don't want to show the
// lock indicator if there are missiles to fire.
if (!ship_secondary_bank_has_ammo(Player_obj->instance))
{
return;
}
// Get the target's current position on the screen. If he's not on there,
// we're not going to draw the lock indicator even if he's in front
// of our ship, so bail out.
g3_rotate_vertex(&lock_point, lock_point_pos);
g3_project_vertex(&lock_point);
if (lock_point.codes & PF_OVERFLOW)
return;
hud_set_iff_color(targetp);
// nprintf(("Alan","lockx: %d, locky: %d TargetX: %d, TargetY: %d\n", Players[Player_num].lock_indicator_x, Players[Player_num].lock_indicator_y, Player->current_target_sx, Player->current_target_sy));
// We have the coordinates of the lock indicator relative to the target in our "virtual frame"
// so, we calculate where it should be drawn based on the player's viewpoint.
if (Player_ai->current_target_is_locked)
{
sx = fl2i(lock_point.sx);
sy = fl2i(lock_point.sy);
gr_unsize_screen_pos(&sx, &sy);
// show the rotating triangles if target is locked
hud_draw_lock_triangles(sx, sy, frametime);
}
else
{
sx = fl2i(lock_point.sx) - (Player->current_target_sx - Players[Player_num].lock_indicator_x);
sy = fl2i(lock_point.sy) - (Player->current_target_sy - Players[Player_num].lock_indicator_y);
gr_unsize_screen_pos(&sx, &sy);
}
// show locked indicator
/*
if ( Lock_gauge.first_frame >= 0 ) {
gr_set_bitmap(Lock_gauge.first_frame);
gr_aabitmap(sx - Lock_gauge_half_w[gr_screen.res], sy - Lock_gauge_half_h[gr_screen.res]);
} else {
hud_draw_diamond(sx, sy, Lock_target_box_width[gr_screen.res], Lock_target_box_height[gr_screen.res]);
}
*/
Lock_gauge.sx = sx - Lock_gauge_half_w[Hud_reticle_style][gr_screen.res];
Lock_gauge.sy = sy - Lock_gauge_half_h[gr_screen.res];
if (Player_ai->current_target_is_locked)
{
Lock_gauge.time_elapsed = 0.0f;
hud_anim_render(&Lock_gauge, 0.0f, 1);
}
else
{
hud_anim_render(&Lock_gauge, frametime, 1);
}
}
