// draw a frame of the rotating lock triangles animation
void hud_draw_lock_triangles(int center_x, int center_y, float frametime)
{
if ( Lock_anim.first_frame == -1 ) {
hud_draw_lock_triangles_old(center_x, center_y, Lock_target_box_width[gr_screen.res]/2);
} else {
// render the anim
Lock_anim.sx = center_x - Lockspin_half_w[gr_screen.res];
Lock_anim.sy = center_y - Lockspin_half_h[gr_screen.res];
// if its still animating
if(Lock_anim.time_elapsed < Lock_anim.total_time){
hud_anim_render(&Lock_anim, frametime, 1, 0, 1);
} else {
// if the timestamp is unset or expired
if((Lock_gauge_draw_stamp < 0) || timestamp_elapsed(Lock_gauge_draw_stamp)){
// reset timestamp
Lock_gauge_draw_stamp = timestamp(1000 / (2 * LOCK_GAUGE_BLINK_RATE));
// switch between draw and dont-draw
Lock_gauge_draw = !Lock_gauge_draw;
}
// maybe draw the anim
Lock_gauge.time_elapsed = 0.0f;
if(Lock_gauge_draw){
hud_anim_render(&Lock_anim, frametime, 1, 0, 1);
}
}
}
}
// 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 HudGaugeLock::render(float frametime)
{
int target_objnum, sx, sy;
object *targetp;
vertex lock_point;
bool locked = Player_ai->current_target_is_locked ? true : false;
bool reset_timers = false;
if ( locked != Last_lock_status ) {
// check if player lock status has changed since the last frame.
reset_timers = true;
Last_lock_status = locked;
}
if (Player_ai->target_objnum == -1) {
return;
}
if (Player->target_is_dying) {
return;
}
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;
}
bool in_frame = g3_in_frame() > 0;
if(!in_frame)
g3_start_frame(0);
gr_set_screen_scale(base_w, base_h);
// 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_world_pos);
g3_project_vertex(&lock_point);
if (lock_point.codes & PF_OVERFLOW) {
gr_reset_screen_scale();
if(!in_frame)
g3_end_frame();
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.screen.xyw.x);
sy = fl2i(lock_point.screen.xyw.y);
gr_unsize_screen_pos(&sx, &sy);
// show the rotating triangles if target is locked
renderLockTriangles(sx, sy, frametime);
if ( reset_timers ) {
Lock_gauge.time_elapsed = 0.0f;
}
} else {
const float scaling_factor = (gr_screen.clip_center_x < gr_screen.clip_center_y) ? (gr_screen.clip_center_x / VIRTUAL_FRAME_HALF_WIDTH) : (gr_screen.clip_center_y / VIRTUAL_FRAME_HALF_HEIGHT);
sx = fl2i(lock_point.screen.xyw.x) - fl2i(i2fl(Player->current_target_sx - Players[Player_num].lock_indicator_x) * scaling_factor);
sy = fl2i(lock_point.screen.xyw.y) - fl2i(i2fl(Player->current_target_sy - Players[Player_num].lock_indicator_y) * scaling_factor);
gr_unsize_screen_pos(&sx, &sy);
if ( reset_timers ) {
Lock_gauge_draw_stamp = -1;
Lock_gauge_draw = 0;
Lock_anim.time_elapsed = 0.0f;
}
}
// show locked indicator
Lock_gauge.sx = sx - Lock_gauge_half_w;
Lock_gauge.sy = sy - Lock_gauge_half_h;
if (Player_ai->current_target_is_locked) {
hud_anim_render(&Lock_gauge, 0.0f, 1);
} else {
hud_anim_render(&Lock_gauge, frametime, 1);
}
gr_reset_screen_scale();
if(!in_frame)
g3_end_frame();
}
// 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);
}
}