#include "../Game.h"

void Game::AlienSpeedUp(int delta) {
    if(AlienVariables::next_speed_up <= delta) {
        AlienVariables::next_speed_up += 10000 - delta; 
        AlienVariables::speed = std::min(AlienVariables::speed_up_factor * AlienVariables::speed, 400.f); 
        AlienVariables::speed_up_factor = std::min(AlienVariables::speed_up_factor + 0.25, 1.75);
        AlienVariables::laser_speed = std::min(AlienVariables::laser_speed + 3, 20); 
    } else {
        AlienVariables::next_speed_up -= delta; 
    }
}

void Game::AlienCountUp(int delta) {
    if(AlienVariables::next_maximum_up <= delta) {
        AlienVariables::max += AlienVariables::maximum_up; 
        AlienVariables::next_maximum_up += 10000 - delta; 
        AlienVariables::next_check_original = std::max(300, AlienVariables::next_check - 200);
    } else {
        AlienVariables::next_maximum_up -= delta; 
    }
}

void Game::AddAlien(int delta) {
    if(AlienVariables::next_check <= delta) {
        if(float(rand()) / RAND_MAX < (1.f - aliens.GetSize() / AlienVariables::max)) {
            aliens.AddNew(Point {rand() % 800 + 100, 0}, alien.CreateAnimation()); 
        }
        AlienVariables::next_check += AlienVariables::next_check_original - delta;
        return;
    }
    AlienVariables::next_check -= delta;
}

void Game::AlienMovement(int delta) {
    for(auto& a : aliens) {
        Gorgon::Geometry::Pointf vector = (a.target - a.location); 
        if(vector.Distance() > 10) {
            vector = vector.Normalize() * AlienVariables::speed * delta / 1000; 
        } else {
            aliens.Remove(a); 
        }
        a.location += vector; 
    }
}

void Game::AlienFireLaser(int delta) {
    for(auto& alien : aliens) {
        if(alien.next_laser <= delta) {
            alien_lasers.AddNew(Point {alien.location.X + alien.image.GetWidth() / 2, alien.location.Y + alien.image.GetHeight()}, alien_laser.CreateAnimation());
            alien.next_laser += AlienDefaults::next_laser - delta;
        } else {
            alien.next_laser -= delta;
        }
    }
}