/**
* 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;
}
unit_map::umap_retval_pair_t unit_map::replace(const map_location& l, unit_ptr p)
{
self_check();
p->set_location(l);
erase(l);
return insert(p);
}