/**
* Animates a teleportation between hexes.
*
* @param a The starting hex.
* @param b The ending hex.
* @param temp_unit The unit to animate (historically, a temporary unit).
* @param disp The game display. Assumed neither locked nor faked.
*/
static void teleport_unit_between(const map_location& a, const map_location& b,
unit& temp_unit, display& disp)
{
if ( disp.fogged(a) && disp.fogged(b) ) {
return;
}
temp_unit.set_location(a);
if ( !disp.fogged(a) ) { // teleport
disp.invalidate(a);
temp_unit.set_facing(a.get_relative_dir(b));
disp.scroll_to_tiles(a, b, game_display::ONSCREEN, true, 0.0, false);
unit_animator animator;
animator.add_animation(&temp_unit,"pre_teleport",a);
animator.start_animations();
animator.wait_for_end();
}
temp_unit.set_location(b);
if ( !disp.fogged(b) ) { // teleport
disp.invalidate(b);
temp_unit.set_facing(a.get_relative_dir(b));
disp.scroll_to_tiles(b, a, game_display::ONSCREEN, true, 0.0, false);
unit_animator animator;
animator.add_animation(&temp_unit,"post_teleport",b);
animator.start_animations();
animator.wait_for_end();
}
temp_unit.anim_comp().set_standing();
disp.update_display();
events::pump();
}
/**
* Animates a single step between hexes.
* This will return before the animation actually finishes, allowing other
* processing to occur during the animation.
*
* @param a The starting hex.
* @param b The ending hex.
* @param temp_unit The unit to animate (historically, a temporary unit).
* @param step_num The number of steps taken so far (used to pick an animation).
* @param step_left The number of steps remaining (used to pick an animation).
* @param animator The unit_animator to use. This is assumed clear when we start,
* but will likely not be clear when we return.
* @param disp The game display. Assumed neither locked nor faked.
* @returns The animation potential until this animation will finish.
* INT_MIN indicates that no animation is pending.
*/
static int move_unit_between(const map_location& a, const map_location& b,
unit_ptr temp_unit, unsigned int step_num,
unsigned int step_left, unit_animator & animator,
display& disp)
{
if ( disp.fogged(a) && disp.fogged(b) ) {
return INT_MIN;
}
temp_unit->set_location(a);
disp.invalidate(a);
temp_unit->set_facing(a.get_relative_dir(b));
animator.replace_anim_if_invalid(temp_unit.get(),"movement",a,b,step_num,
false,"",0,unit_animation::hit_type::INVALID,nullptr,nullptr,step_left);
animator.start_animations();
animator.pause_animation();
disp.scroll_to_tiles(a, b, game_display::ONSCREEN, true, 0.0, false);
animator.restart_animation();
// useless now, previous short draw() just did one
// new_animation_frame();
int target_time = animator.get_animation_time_potential();
// target_time must be short to avoid jumpy move
// std::cout << "target time: " << target_time << "\n";
// we round it to the next multiple of 200
target_time += 200;
target_time -= target_time%200;
// This code causes backwards teleport because the time > 200 causes offset > 1.0
// which will not match with the following -1.0
// if( target_time - animator.get_animation_time_potential() < 100 ) target_time +=200;
return target_time;
}
void positional_source::update_positions(unsigned int time, const display &disp)
{
int distance_volume = DISTANCE_SILENT;
for(std::vector<map_location>::iterator i = locations_.begin(); i != locations_.end(); ++i) {
if(disp.shrouded(*i) || (check_fogged_ && disp.fogged(*i)))
continue;
int v = calculate_volume(*i, disp);
if(v < distance_volume) {
distance_volume = v;
}
}
if(sound::is_sound_playing(id_)) {
sound::reposition_sound(id_, distance_volume);
} else {
update(time, disp);
}
}
int positional_source::calculate_volume(const map_location &loc, const display &disp)
{
assert(range_ > 0);
assert(faderange_ > 0);
if((check_shrouded_ && disp.shrouded(loc)) || (check_fogged_ && disp.fogged(loc)))
return DISTANCE_SILENT;
SDL_Rect area = disp.map_area();
map_location center = disp.hex_clicked_on(area.x + area.w / 2, area.y + area.h / 2);
int distance = distance_between(loc, center);
if(distance <= range_) {
return 0;
}
return static_cast<int>((((distance - range_)
/ static_cast<double>(faderange_)) * DISTANCE_SILENT));
}
/// Rather simple test for a hex being fogged.
/// This only exists because is_shrouded() does. (The code looks nicer if
/// the test for being fogged looks similar to the test for being shrouded.)
inline bool is_fogged(const display& disp, const map_location& loc)
{
return disp.fogged(loc);
}