Ben Evans / Mbed 2 deprecated Defender_Game

Ben Evans University Second Year Project. Game Called Defender.

Dependencies:   mbed

https://os.mbed.com/media/uploads/evanso/84bc1a30759fd6a1e3f1fd1fae3e97c2.png

Hello, soldier, you have been specially selected as the defender of planet earth.

Your mission, if you choose to accept it. Fly around the planet and pulverise invading alien ships for as long as you can. Stop the aliens abducting the innocent people on the ground. Be warned if an alien ship manages to abduct a person and take them to top of the screen, they will no longer move randomly and will begin to hunt you down. This sounds like a challenge you were trained for.

But don’t worry soldier you’re not going into battle empty-handed. Your ship is equipped with a state of the art laser beam that has unlimited ammo and four smart bombs that will destroy anything on the screen. The ship also has three lives so use them wisely.

As time goes on more alien ships will arrive on planet earth increasing the difficulty of your mission. And remember the landscape bellow loops around so if you continually fly in the same direction you go to your original position. Good luck soldier.

Alien/Alien.cpp

Committer:
evanso
Date:
2020-05-06
Revision:
22:053c11a202e1
Parent:
21:f7d7834e3af1
Child:
24:479da6ca0e7e

File content as of revision 22:053c11a202e1:

#include "Alien.h"

const int k_alien_sprite[6][7] = {
    { 0,0,1,1,1,1,0,},
    { 0,1,0,1,1,0,1,},
    { 0,1,0,1,1,0,1,},
    { 0,0,1,1,1,1,0,},
    { 0,1,0,1,0,1,0,},
    { 1,0,0,1,0,0,1,},
};

Alien::Alien() {

}
 
Alien::~Alien() {
    
}

void Alien::init() {
    position_x_alien_ = 10;
    position_y_alien_ = 22;
    alien_move_counter = 0;
}

void Alien::draw_alien(N5110 &lcd,Vector2D spaceship_pos,Direction d_) {
    //moves alien spaceship movemen 
    position_x_alien_ += calc_alien_movement(d_);
    
    //Alien moves on its own but at 3rd speed of spaceship 
    if (alien_move_counter%3 == 0) {
        move_alien(spaceship_pos);
    }
    alien_move_counter++;
    
    lcd.drawSprite(position_x_alien_, position_y_alien_, 6, 7, (int*)k_alien_sprite);
}

void Alien::move_alien(Vector2D spaceship_pos){
    if(spaceship_pos.x <= position_x_alien_){
       position_x_alien_ --;
    }else{
        position_x_alien_ ++;
    }
}

bool Alien::check_collision(Weapons bullet) {
    bool collision = false; 
    //printf ("Collision 1 = %d\n", collision);
    // checks collision if bullet is going in east direction 
    if(bullet.get_direction()){
        Vector2D bullet_pos_two = bullet.get_pos_two();
        //int bullet_pos_twox = bullet_pos_two.x;
        //int bullet_pos_twoy = bullet_pos_two.y;
        //printf ("alien x  = %d, bullet x = %d\n", position_x_alien_,bullet_pos_twox );
        //printf ("alien y  = %d, bullet y = %d\n", position_y_alien_,bullet_pos_twoy );
        if(bullet_pos_two.x >= position_x_alien_ && bullet_pos_two.x <= position_x_alien_ + 6 && position_y_alien_ <= bullet_pos_two.y <= position_y_alien_ + 7){
            collision = true;
        }
    //printf ("Collision 2 = %d\n", collision);    
    // checks collision if bullet is going in west direction 
    }else if(!bullet.get_direction()){
        Vector2D bullet_pos_one = bullet.get_pos_one();
        if(bullet_pos_one.x >= position_x_alien_  && bullet_pos_one.x <= position_x_alien_ + 6  && position_y_alien_ <= bullet_pos_one.y <= position_y_alien_ + 7){
            collision = true;
        }
     //printf ("Collision 3 = %d\n", collision);   
    }
    //printf ("Collision 4 = %d\n", collision);   
    return collision;
}

int Alien::calc_alien_movement(Direction d_){  
    // moves the alien in oposite direction to spaceship when it's position is at min and max x positions and joystick has direction     
    if (d_ == W || d_ == NW || d_ == SW){ 
        return 2;
    }else if (d_ == E || d_ == NE || d_ == SE){ 
        return -2; 
    }else {
        return 0;
    }
}

Vector2D Alien::get_pos(){
    Vector2D pos = {position_x_alien_,position_y_alien_};
    return pos;
}