#include <math.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "cab202_graphics.h"
#include "cab202_timers.h"
#include "cab202_sprites.h"



sprite_id alien[10];
sprite_id player;
timer_id tim;
timer_id drop;
sprite_id bullet;
sprite_id bomb[4];
int spot;
int life = 3;
int SCORE = 0;
int quit = 0;
bool shoot = false;
int count = 0;
void info() {
	int x = screen_width()/2;
	draw_string(x - 5, screen_height() -1, "Level: 1" );
	draw_string(0, screen_height()-2, "Georgina Hine (n8872597)");
	draw_string(screen_width() - 11, screen_height() - 2, "Lives:");
	draw_string(screen_width()-22, screen_height() - 2, "Score:");
	draw_line(0, screen_height() - 3, screen_width(), screen_height() - 3, '-');
	draw_int(screen_width() - 4, screen_height() - 2, life);
	draw_int(screen_width() - 15, screen_height() - 2, SCORE);


	show_screen();
}

void setup() {
	setup_screen();
	player = create_sprite(screen_width()/2, screen_height() - 5, 1, 1, "S");
	player->dy = 0;
	player->dx = 0;

	bullet = create_sprite(-1, -1, 1, 1, "*");
	bullet->dy = 0;
	bullet->dx = 0;

for (int b = 0; b< 4; b++){
		bomb[b] = create_sprite(8, 9, 1, 1, "&");
		bomb[b]->dx = 0;
		bomb[b]->dy = 0;
		bomb[b]->is_visible = false;

			}

for (int i = 0; i < 3; i++) {
		alien[i] = create_sprite(4+4*i, 0, 1, 1, "@");

			}
for (int j = 0; j < 4; j++) {
		alien[j+3] = create_sprite(2+4*j, 3, 1, 1, "@");

			}
for (int k = 0; k < 3; k++) {
		alien[k+7] = create_sprite(4+4*k, 6, 1, 1, "@");

			}
for (int r = 0; r < 10; r++) {
	alien[r]->dx = 0.1;
	alien[r]->dy = 0;

		}


	tim = create_timer(25);
	drop = create_timer(3000);
	srand(time(NULL));
}

void draws() {

	clear_screen();
	draw_sprite(bullet);
	draw_sprite(player);
		for (int i = 0; i < 10; i++) {
			draw_sprite(alien[i]);

			}
	for(int j = 0; j < 4; j++) {
		draw_sprite(bomb[j]);
		}
	show_screen();
}

void check_input() {
	int key = get_char();



	if (key == 'a'){
		player->dx = -1;

	}
	else if (key == 'd'){
		player->dx = 1;

	}
	else if (key == 'q'){
		quit = 1;
	}
	else if (key == 's'){
		if(shoot == false) {
		bullet->y = screen_height() - 5;
		bullet->dy = -1;
		spot = player->x;
		shoot = true;
	}
	}
	else {
		player->dx = 0;
		player->dy = 0;

	}



	while (get_char() != -1) {

	}


}

void update_state() {

	//Check if we've hit the boundaries
	if (player->x + player->dx < 0 || player->x + player->dx >= screen_width()){
		player->dx = 0;
		player->dy = 0;
	}

	//Move player
	player->x += player->dx;
	player->y +=player->dy;

	//Reset move vector
	player->dx = 0;
	player->dy = 0;


	if (shoot == true) {
		bullet->y += bullet->dy;
		bullet->x = spot;

	}
	else {
		bullet->dy = 0;
		bullet->x = -1;
		bullet->y = -1;
	}

	if (bullet->y < 0) {
		shoot = false;
	}

	for (int i = 0; i < 10; i++) {
		if (alien[i]->x + alien[i]->dx > screen_width() - 1) {
			alien[i]->x = -1;
		}
	}

	for (int r = 0; r < 10; r++) {
		alien[r]->x += alien[r]->dx ;
		alien[r]->y += alien[r]->dy;
	}

	for (int l = 0; l<10; l++) {
		if (round(bullet->x) == round(alien[l]->x) && round(bullet->y) + round(bullet->dy) == round(alien[l]->y)) {
			alien[l]->x = -1;
			alien[l]->y = -3;
			alien[l]->dy= 0;
			alien[l]->dx = 0;
			SCORE = SCORE + 30;
			shoot = false;
			count = count + 1;
		}
	}

	for(int z = 0; z < 4; z++) {
		if(round(bomb[z]->x) == round(player->x) && round(bomb[z]->y) + round(bomb[z]->dy) == round(player->y)) {
			life = life - 1;
			bomb[z]->is_visible = false;
		}
	}



	for(int f = 0; f < 4; f++) {
		if(bomb[f]->x == player->x + player->dx && bomb[f]->y == player->dy + player->y) {
			bomb[f]->is_visible = false;
		}
	}

	for(int z = 0; z < 4; z++) {
		if(bomb[z]->y > screen_height() - 4) {
			bomb[z]->is_visible = false;
		}
	}

	if (timer_expired(drop)) { //make the random number smaller as the number of aliens decreases
		int c = rand() %10;
		int h = rand() %4;
		if (bomb[h]->is_visible == false) {
			bomb[h]->dy = 0.3;
			bomb[h]->x = alien[c]->x + bomb[h]->dx;
			bomb[h]->y = alien[c]->y + bomb[h]->dy;
			bomb[h]->is_visible = true;

		}

			reset_timer(drop);
	}
	for(int z = 0; z < 4; z++) {
		if(bomb[z]->is_visible == true) {
			bomb[z]->y += bomb[z]->dy;
		}

		else {
			bomb[z]->dy = 0;
			bomb[z]->x = -3;
			bomb[z]->y = -4;
		}


	}
	int no = 10;

	if(count == no) {

		for (int r = 0; r < 10; r++) {
			alien[r]->dx = 0.1;
			alien[r]->dy = 0;
		}

		for (int i = 0; i < 3; i++) {
			alien[i]->x = 4+4*1;
			alien[i]->y = 0; //= create_sprite(4+4*i, 0, 1, 1, "@");
		}
		for (int j = 0; j < 4; j++) {
			alien[j+3]->x = 2+4*j;
			alien[j+3]->y = 3; //= create_sprite(2+4*j, 3, 1, 1, "@");
		}
		for (int k = 0; k < 3; k++) {
			alien[k+7]->x = 4+4*k;
			alien[k+7]->y = 6; //= create_sprite(4+4*k, 6, 1, 1, "@");
		}

	no = no + 10;
	}





}