Test.cpp
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Test.cpp
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	#pragma comment(linker, "/SUBSYSTEM:windows /ENTRY:mainCRTStartup") //no console window behind game window

	#include<allegro5\allegro.h>
	#include<allegro5\allegro_native_dialog.h>
	#include<allegro5\allegro_primitives.h>
	#include<allegro5\allegro_image.h>
	#include <allegro5\allegro_font.h>
	#include <allegro5\allegro_ttf.h>
	#include <allegro5\allegro_audio.h>
	#include <allegro5\allegro_acodec.h>
	#include <string>
	#include <string.h>
	#include <iostream>
	#include <fstream>

	#include "Enemy.h"
	#include "Spaceship.h"
	#include "Bullet.h"
	#include "Global.h"
	#include "BackGround.h"
	#include "Barrier.h"
	#include "Highscores.h"

	using namespace std;

	//GLOBALS
	enum KEYS { LEFT, RIGHT, SPACE };
	bool keys[5] = { false,false,false };
	int gameState = 1; //initial gamestate is menu
	extern int width;
	extern int height;
	int numAlive = NUM_COLUMNS*NUM_ROWS;
	int EnemyWaveCount = 0;
	int input = 0; //count variable to ensure action occurs only once
	int output = 0; //count variable to ensure action occurs only once
	int x = 20; //initial position of animated ship
	int score = 0;
	char *nameString;
	bool startAnim = false;
	bool isHighscore = false; //will be true if user's score is higher than lowest highscore
	int lowScore = 0; //value of lowest highscore
	const int FPS = 60;
	bool done = false;
	bool redraw = true;

	//METHODS
	void setEnemy();
	void gameRestart();
	void collideEnemy(int&);
	void collidePlayer();
	void moveDown(int&);
	void enemyShoot();
	void updateBullet();
	bool reachEnd();
	void InitBackground(BackGround &back, float x, float y, float velx, float vely, int width, int height, int dirX, int dirY, ALLEGRO_BITMAP *image);
	void UpdateBackground(BackGround &back);
	void DrawBackground(BackGround &back);
	void CollideBarrier();
	void Reactivate_Enemies();
	void DrawAnimation(ALLEGRO_BITMAP *pic, int &y);
	void writeScore();
	void readScores();

	void EnemyReachEnd();
	void BulletBarrierCollide();
	void InitBarriers();
	void Reactivate_Barriers();
	void updateEnemyCount();
	void UpdateBarrierImages(ALLEGRO_BITMAP *SpaceBarrier[]);

	//INITIALISE
	Spaceship player(width / 2, height * 4 / 5);
	Bullet playerBullet(player.x_pos, player.y_pos, 10, true);
	Bullet enemyBullet(0, 0, 10, false);
	Enemy arrEnem[NUM_COLUMNS][NUM_ROWS]; //array of objects
	Barrier redBarrier[3];
	Highscores arrScores[11];
	BackGround BG;
	BackGround MG;
	BackGround FG;
	BackGround MM;


	int main(void)
	{
	readScores(); //reads in scores from textfile
	setEnemy();
	enemyBullet.isFriendly = false;
	srand((unsigned)time(NULL));

	//variables


	if (!al_init())
	{
	al_show_native_message_box(NULL, NULL, NULL, "Could not initialize allegro", NULL, NULL);
	return -1;
	}

	//Allegro variables
	ALLEGRO_DISPLAY *DISPLAY = NULL;
	ALLEGRO_BITMAP *picHealth[7];
	ALLEGRO_BITMAP *picShip = NULL;
	ALLEGRO_BITMAP *picBullet = NULL;
	ALLEGRO_BITMAP *picGreenLazer = NULL;
	ALLEGRO_BITMAP *picEnemy = NULL;
	ALLEGRO_BITMAP *Game = NULL;
	ALLEGRO_BITMAP *MENU = NULL;
	ALLEGRO_BITMAP *bgImage = NULL;
	ALLEGRO_BITMAP *mgImage = NULL;
	ALLEGRO_BITMAP *fgImage = NULL;
	ALLEGRO_BITMAP *SpaceBarrier[5];
	ALLEGRO_BITMAP *animShip;
	ALLEGRO_BITMAP *logo;

	ALLEGRO_EVENT_QUEUE *TestQueue = NULL;
	ALLEGRO_TIMER *timer = NULL;
	ALLEGRO_FONT *font38 = NULL;
	ALLEGRO_FONT *starFont = NULL;
	ALLEGRO_FONT *fontName = NULL;
	ALLEGRO_SAMPLE *blaster = NULL;
	ALLEGRO_SAMPLE *explosion = NULL;
	ALLEGRO_SAMPLE *music = NULL;
	ALLEGRO_SAMPLE *startGame = NULL;
	ALLEGRO_SAMPLE *emperor1 = NULL;
	ALLEGRO_SAMPLE *emperor2 = NULL;
	ALLEGRO_SAMPLE *emperor3 = NULL;
	ALLEGRO_USTR* str = al_ustr_new("ENTER NAME");

	//Allegro Module Init
	al_init_image_addon();
	al_set_new_window_position(400, 200); //set pos of game window
	DISPLAY = al_create_display(width, height);
	al_hide_mouse_cursor(DISPLAY);
	al_init_primitives_addon();
	al_install_keyboard();
	al_init_font_addon();
	al_init_ttf_addon();
	al_install_audio();
	al_init_acodec_addon();

	if (!DISPLAY)
	{
	al_show_native_message_box(NULL, NULL, NULL, "Could not initialize display", NULL, NULL);
	return -1;
	}

	//load sounds
	al_reserve_samples(7);
	blaster = al_load_sample("Sounds/XWing-Laser.ogg");
	explosion = al_load_sample("Sounds/Blast.ogg");
	startGame = al_load_sample("Sounds/xwing.ogg");
	music = al_load_sample("Sounds/Star_Wars.ogg");
	emperor1 = al_load_sample("Sounds/Emperor1.ogg");
	emperor2 = al_load_sample("Sounds/Emperor2.ogg");
	emperor3 = al_load_sample("Sounds/Emperor3.ogg");

	//Load Pictures
	picBullet = al_load_bitmap("Pictures/Lazer.png");
	picGreenLazer = al_load_bitmap("Pictures/GreenLazer.png");
	picShip = al_load_bitmap("Pictures/player1.png");
	picEnemy = al_load_bitmap("Pictures/enemy.png");
	MENU = al_load_bitmap("Pictures/starBG.png");

	for (int i = 0; i < 5; i++)
	SpaceBarrier[i] = al_load_bitmap(Images[i]);

	for (int i = 0; i < 5; i++)
	al_convert_mask_to_alpha(SpaceBarrier[i], al_map_rgb(255, 255, 255));

	for (int i = 0; i < 3; i++)
	redBarrier[i].CurrentImage = SpaceBarrier[4];

	picHealth[0] = al_load_bitmap("Pictures/1.png");
	picHealth[1] = al_load_bitmap("Pictures/2.png");
	picHealth[2] = al_load_bitmap("Pictures/3.png");
	picHealth[3] = al_load_bitmap("Pictures/4.png");
	picHealth[4] = al_load_bitmap("Pictures/5.png");
	picHealth[5] = al_load_bitmap("Pictures/6.png");
	picHealth[6] = al_load_bitmap("Pictures/blank1.png");
	for (int i = 0; i < 7; i++)
	al_convert_mask_to_alpha(picHealth[i], al_map_rgb(0, 0, 0));

	bgImage = al_load_bitmap("Pictures/starBG.png");
	mgImage = al_load_bitmap("Pictures/starMG.jpg");
	fgImage = al_load_bitmap("Pictures/starFG.png");
	animShip = al_load_bitmap("Pictures/player2.png");
	logo = al_load_bitmap("Pictures/logo.png");

	al_convert_mask_to_alpha(picShip, al_map_rgb(0, 0, 0));
	al_convert_mask_to_alpha(picEnemy, al_map_rgb(0, 0, 0));
	al_convert_mask_to_alpha(picBullet, al_map_rgb(0, 0, 0));
	al_convert_mask_to_alpha(mgImage, al_map_rgb(0, 0, 0));
	al_convert_mask_to_alpha(animShip, al_map_rgb(0, 0, 0));

	InitBackground(BG, 0, 0, 1, 0, 800, 600, -1, 1, bgImage);
	InitBackground(MG, 0, 0, 3, 0, 2000, 768, -1, 1, mgImage);
	InitBackground(FG, 0, 0, 5, 0, 800, 600, -1, 1, fgImage);
	InitBackground(MM, 0, 0, 1, 0, 800, 600, -1, 1, MENU);
	InitBarriers();

	timer = al_create_timer(1.0 / FPS);

	al_set_display_icon(DISPLAY, picShip);
	al_play_sample(music, 1, 0, 1, ALLEGRO_PLAYMODE_LOOP, NULL);

	TestQueue = al_create_event_queue();
	al_register_event_source(TestQueue, al_get_keyboard_event_source());
	al_register_event_source(TestQueue, al_get_display_event_source(DISPLAY));
	al_register_event_source(TestQueue, al_get_timer_event_source(timer));

	al_start_timer(timer);

	int frameCount = 0;
	int pos = (int)al_ustr_size(str);
	font38 = al_load_font("Fonts/Legacy.ttf", 38, 0);
	starFont = al_load_font("Fonts/STARWARS.TTF", 80, 0);
	fontName = al_load_font("Fonts/Legacy.ttf", 38, 0);

	while (!done)
	{
	ALLEGRO_EVENT GETKEY;
	al_wait_for_event(TestQueue, &GETKEY);


	if (GETKEY.type == ALLEGRO_EVENT_DISPLAY_CLOSE) //will allow clicking X button to close program
	{
	done = true;
	}

	else if (GETKEY.type == ALLEGRO_EVENT_TIMER)
	{
	redraw = true;
	UpdateBackground(MM);
	frameCount++;
	if (keys[LEFT] && gameState == 2)
	player.MoveSpaceshipLeft();
	if (keys[RIGHT] && gameState == 2)
	player.MoveSpaceshipRight();
	if (keys[SPACE]) //Spacebar will fire
	{
	if (gameState == 1) {
	if (!startAnim)
	al_play_sample(startGame, 1, 0, 1, ALLEGRO_PLAYMODE_ONCE, NULL); //plays when spaceship flies across screen
	startAnim = true;
	}
	else if (gameState == 2)
	{
	if (playerBullet.status == 0)
	{
	al_play_sample(blaster, 1, 0, 1, ALLEGRO_PLAYMODE_ONCE, NULL);
	playerBullet.status = 1;
	}
	}

	}
	if (gameState == 2)
	{
	UpdateBackground(BG);
	UpdateBackground(MG);
	UpdateBackground(FG);
	collideEnemy(score);
	updateEnemyCount();
	CollideBarrier();
	collidePlayer();
	BulletBarrierCollide();
	EnemyReachEnd();
	enemyShoot();
	moveDown(frameCount);
	updateBullet();
	}
	}


	else if (GETKEY.type == ALLEGRO_EVENT_KEY_DOWN)
	{
	switch (GETKEY.keyboard.keycode)
	{
	case ALLEGRO_KEY_ESCAPE: //esc to end the game
	if (gameState == 2)
	gameState = 3;
	else if (gameState == 3)
	gameState = 4;
	else
	done = true;
	break;
	case ALLEGRO_KEY_RIGHT:
	keys[RIGHT] = true;
	break;
	case ALLEGRO_KEY_LEFT:
	keys[LEFT] = true;
	break;
	case ALLEGRO_KEY_SPACE:
	keys[SPACE] = true;
	break;
	case ALLEGRO_KEY_L:
	if (gameState == 1)
	gameState = 4;
	break;
	case ALLEGRO_KEY_BACKSPACE: //backspace for name input
	if (gameState == 3)
	if (al_ustr_prev(str, &pos))
	al_ustr_truncate(str, pos);
	break;
	case ALLEGRO_KEY_ENTER: //will display leaderboard once they press enter.
	if (gameState == 3)
	{
	gameState = 4;
	break;
	}

	if (gameState == 4)
	{
	gameRestart();
	al_ustr_free(str);
	str = al_ustr_new("ENTER NAME");
	break;
	}
	break;
	}
	}

	if (GETKEY.type == ALLEGRO_EVENT_KEY_UP)
	{
	switch (GETKEY.keyboard.keycode)
	{
	case ALLEGRO_KEY_RIGHT:
	keys[RIGHT] = false;
	break;
	case ALLEGRO_KEY_LEFT:
	keys[LEFT] = false;
	break;
	case ALLEGRO_KEY_SPACE:
	keys[SPACE] = false;
	break;
	}
	}

	else if (GETKEY.type == ALLEGRO_EVENT_KEY_CHAR && gameState == 3 && isHighscore)
	{
	if (GETKEY.keyboard.unichar >= 32)
	{
	if (input == 0)
	{
	al_ustr_remove_range(str, 0, al_ustr_length(str)); //clears 'ENTER NAME: '
	pos = 0;
	input = 1;
	}
	pos += al_ustr_append_chr(str, GETKEY.keyboard.unichar);
	}
	}

	if (redraw && al_is_event_queue_empty(TestQueue)) //rendering
	{
	redraw = false;
	if (gameState == 1) //menu
	{
	DrawBackground(MM);

	if (startAnim)
	{
	DrawAnimation(animShip, x);
	}

	al_draw_text(font38, al_map_rgb(255, 40, 78), width / 2, height - 750, ALLEGRO_ALIGN_CENTRE, "AMMST PRESENTS");
	al_draw_bitmap(logo, 140, (height)-690, 0);
	al_draw_text(font38, al_map_rgb(255, 40, 78), (width / 2), (height)-250, ALLEGRO_ALIGN_CENTRE, "PRESS SPACE TO START");
	al_draw_text(font38, al_map_rgb(255, 40, 78), (width / 2), (height - 200), ALLEGRO_ALIGN_CENTRE, "PRESS L TO VIEW HIGHSCORES");
	al_draw_text(font38, al_map_rgb(255, 40, 78), (width / 2), (height - 150), ALLEGRO_ALIGN_CENTRE, "PRESS ESC TO EXIT");
	}

	else if (gameState == 2) //main game
	{
	DrawBackground(BG);
	DrawBackground(MG);
	DrawBackground(FG);

	UpdateBarrierImages(SpaceBarrier);

	redBarrier[0].drawIfActive(50, 500);
	redBarrier[1].drawIfActive(435, 500);
	redBarrier[2].drawIfActive(820, 500);


	if (playerBullet.status == 1 && player.active) //if bullet still active
	{
	playerBullet.Increment(); //bullet will move pos
	al_draw_bitmap(picGreenLazer, playerBullet.x_pos, playerBullet.y_pos, 0); //redraw at new pos
	if (playerBullet.y_pos < 20)
	{
	playerBullet.status = 0;
	updateBullet();
	}
	}

	if (enemyBullet.status == 1)
	{
	enemyBullet.Increment(); //bullet will move pos
	al_draw_bitmap(picBullet, enemyBullet.x_pos, enemyBullet.y_pos, 0);
	}

	switch (player.health)
	{
	case 60:
	al_draw_bitmap(picHealth[0], 10, 40, 0);
	break;
	case 50:
	al_draw_bitmap(picHealth[1], 10, 40, 0);
	break;
	case 40:
	al_draw_bitmap(picHealth[2], 10, 40, 0);
	break;
	case 30:
	al_draw_bitmap(picHealth[3], 10, 40, 0);
	break;
	case 20:
	al_draw_bitmap(picHealth[4], 10, 40, 0);
	break;
	case 10:
	al_draw_bitmap(picHealth[5], 10, 40, 0);
	break;
	case 0:
	al_draw_bitmap(picHealth[6], 10, 40, 0);
	break;
	}

	if (player.health > 0)
	{
	al_draw_bitmap(picShip, player.x_pos - 45, player.y_pos, 0);
	}

	bool test = reachEnd();
	for (int i = 0; i < NUM_COLUMNS; i++)
	{


	for (int j = 0; j < NUM_ROWS; j++)
	{

	if (arrEnem[i][j].active)
	{
	arrEnem[i][j].Move(test);
	al_draw_bitmap(picEnemy, arrEnem[i][j].x_pos, arrEnem[i][j].y_pos, 0);
	}
	}

	}

	al_draw_textf(font38, al_map_rgb(255, 0, 0), 10, 0, 0, "SCORE: %i", score);
	}

	else if (gameState == 3) //end game
	{

	if (player.health == 0)
	{
	al_play_sample(explosion, 1, 0, 1, ALLEGRO_PLAYMODE_ONCE, NULL);
	if (frameCount % 7 == 0)
	al_play_sample(emperor3, 1, 0, 1, ALLEGRO_PLAYMODE_ONCE, NULL);
	else if (frameCount % 3 == 0)
	al_play_sample(emperor2, 1, 0, 1, ALLEGRO_PLAYMODE_ONCE, NULL);
	else
	al_play_sample(emperor1, 1, 0, 1, ALLEGRO_PLAYMODE_ONCE, NULL);

	player.health = 1; //will only sound once
	}

	//check to determine if he made a highscore
	if (score>lowScore)
	isHighscore = true;

	nameString = al_cstr_dup(str);
	al_draw_textf(starFont, al_map_rgb(255, 0, 0), width / 2, height / 2 - 200, ALLEGRO_ALIGN_CENTRE, "FINAL SCORE: %i", score);

	if (isHighscore)
	al_draw_text(fontName, al_map_rgb_f(1, 1, 1), width / 2, height / 2 - 100, ALLEGRO_ALIGN_CENTRE, nameString);
	}

	else if (gameState == 4) //highscores
	{

	if (isHighscore && output == 0)
	{
	writeScore();
	output = 1;
	}

	al_draw_textf(starFont, al_map_rgb(255, 0, 0), width / 2, 40, ALLEGRO_ALIGN_CENTRE, "HIGHSCORES");

	for (int i = 0; i < 10; i++)
	{
	al_draw_textf(font38, al_map_rgb(255, 0, 0), width / 2 - 80, 120 + i * 60, ALLEGRO_ALIGN_RIGHT, "%i", arrScores[i].score);
	al_draw_textf(font38, al_map_rgb(255, 0, 0), width / 2 + 80, 120 + i * 60, ALLEGRO_ALIGN_LEFT, "%s", arrScores[i].name.c_str());
	}

	}

	al_flip_display(); //flip display to show all drawn objects
	al_clear_to_color(al_map_rgb(0, 0, 0)); //background colour
	}
	}

	al_destroy_sample(blaster);
	al_destroy_sample(explosion);
	al_destroy_sample(startGame);
	al_destroy_sample(music);
	al_destroy_sample(emperor1);
	al_destroy_sample(emperor2);
	al_destroy_sample(emperor3);

	al_destroy_event_queue(TestQueue);
	al_destroy_timer(timer);
	al_destroy_display(DISPLAY);

	al_destroy_font(font38);
	al_destroy_font(starFont);
	al_destroy_font(fontName);

	al_destroy_bitmap(Game);
	al_destroy_bitmap(MENU);
	al_destroy_bitmap(picEnemy);
	al_destroy_bitmap(picShip);
	al_destroy_bitmap(picBullet);
	al_destroy_bitmap(picGreenLazer);
	al_destroy_bitmap(bgImage);
	al_destroy_bitmap(mgImage);
	al_destroy_bitmap(fgImage);
	al_destroy_bitmap(animShip);
	al_destroy_bitmap(logo);
	for (int i = 0; i < 7; i++)
	al_destroy_bitmap(picHealth[i]);
	for (int i = 0; i < 5; i++)
	al_destroy_bitmap(SpaceBarrier[i]);

	return 0;
	}

	void collidePlayer()
	{
	if (enemyBullet.status)
	{
	if (enemyBullet.y_pos < player.y_pos + player.boxheight //checks if within box
	&& enemyBullet.y_pos > player.y_pos - player.boxheight
	&& enemyBullet.x_pos < player.x_pos + player.boxright
	&& enemyBullet.x_pos > player.x_pos - player.boxleft)
	{
	enemyBullet.status = 0; //bullet set to not active
	player.health -= 10;
	}
	}

	if (player.health == 0)
	{
	player.active = false;
	gameState = 3;
	}
	}

	void setEnemy()
	{
	//row 1
	arrEnem[0][0].set(width / 2 - sp, 65); //left
	arrEnem[1][0].set(width / 2, 65); //middle
	arrEnem[2][0].set(width / 2 + sp, 65); //right
	arrEnem[3][0].set(width / 2 - 2 * sp, 65);
	arrEnem[4][0].set(width / 2 + 2 * sp, 65);
	arrEnem[5][0].set(width / 2 - 3 * sp, 65);
	arrEnem[6][0].set(width / 2 + 3 * sp, 65);
	arrEnem[7][0].set(width / 2 - 4 * sp, 65);

	//row 2
	arrEnem[0][1].set(width / 2 - sp, 130); //left
	arrEnem[1][1].set(width / 2, 130); //middle
	arrEnem[2][1].set(width / 2 + sp, 130); //right
	arrEnem[3][1].set(width / 2 - 2 * sp, 130);
	arrEnem[4][1].set(width / 2 + 2 * sp, 130);
	arrEnem[5][1].set(width / 2 - 3 * sp, 130);
	arrEnem[6][1].set(width / 2 + 3 * sp, 130);
	arrEnem[7][1].set(width / 2 - 4 * sp, 130);

	//row 3
	arrEnem[0][2].set(width / 2 - sp, 195); //left
	arrEnem[1][2].set(width / 2, 195); //middle
	arrEnem[2][2].set(width / 2 + sp, 195); //right
	arrEnem[3][2].set(width / 2 - 2 * sp, 195);
	arrEnem[4][2].set(width / 2 + 2 * sp, 195);
	arrEnem[5][2].set(width / 2 - 3 * sp, 195);
	arrEnem[6][2].set(width / 2 + 3 * sp, 195);
	arrEnem[7][2].set(width / 2 - 4 * sp, 195);

	//row 4
	arrEnem[0][3].set(width / 2 - sp, 260);
	arrEnem[1][3].set(width / 2, 260);
	arrEnem[2][3].set(width / 2 + sp, 260);
	arrEnem[3][3].set(width / 2 - 2 * sp, 260);
	arrEnem[4][3].set(width / 2 + 2 * sp, 260);
	arrEnem[5][3].set(width / 2 - 3 * sp, 260);
	arrEnem[6][3].set(width / 2 + 3 * sp, 260);
	arrEnem[7][3].set(width / 2 - 4 * sp, 260);

	}

	void collideEnemy(int &score)
	{
	if (playerBullet.status)
	{
	for (int i = 0; i < NUM_COLUMNS; i++)
	{
	for (int j = 0; j < NUM_ROWS; j++) //collision detection ahead. Proceed with caution
	{
	if (arrEnem[i][j].active) //checks if enemy active
	{
	if (playerBullet.y_pos - 25 < arrEnem[i][j].y_pos + arrEnem[i][j].boxheight //checks if within box of enemy
	&& playerBullet.y_pos > arrEnem[i][j].y_pos - arrEnem[i][j].boxheight
	&& playerBullet.x_pos < arrEnem[i][j].x_pos + arrEnem[i][j].boxright
	&& playerBullet.x_pos > arrEnem[i][j].x_pos - arrEnem[i][j].boxleft)
	{
	playerBullet.status = 0; //bullet set to not active
	arrEnem[i][j].active = false; //enemy set to not active

	switch (j)
	{
	case 0:
	score += 40;
	break;
	case 1:
	score += 20;
	break;
	case 2:
	score += 20;
	break;
	default:
	score += 10;
	break;
	}
	numAlive--;
	}
	}
	}
	}
	}
	}

	void moveDown(int &frameCount)
	{
	int interval = 60; //how long enemies take to move down depends on how many enemies left

	if (numAlive > 30)
	{
	interval = 360;
	}
	else if (30 > numAlive && numAlive > 15)
	{
	interval = 300;
	}
	else if (15 > numAlive && numAlive > 8)
	{
	interval = 240;
	}
	else if (8 > numAlive && numAlive > 2)
	{
	interval = 120;
	}
	else if (numAlive == 0)
	{
	gameState = 3;
	}

	if (frameCount % interval == 0)
	{
	for (int i = 0; i < NUM_COLUMNS; i++)
	{
	for (int j = 0; j < NUM_ROWS; j++)
	{
	arrEnem[i][j].y_pos += 20;
	}
	}
	}
	}

	void enemyShoot()
	{
	if (!enemyBullet.status)
	{
	for (int i = 0; i < NUM_COLUMNS; i++)
	{
	for (int j = 0; j < NUM_ROWS; j++)
	{
	if (arrEnem[i][j].active)
	{
	int randCol = rand() % NUM_COLUMNS;
	int randRow = rand() % NUM_ROWS;
	if (randCol == i && randRow == j)
	{
	enemyBullet.UpdatebulletPos(arrEnem[i][j]);
	enemyBullet.status = 1;
	break;
	}
	}
	}
	}
	}
	}

	void updateBullet()
	{
	if (playerBullet.status == 0) //while bullet not active sets pos of ship as initial bullet pos
	playerBullet.UpdateBulletPos(player);
	}

	bool reachEnd() //returns true if any enemy hits either of the sides
	{
	for (int i = 0; i < NUM_COLUMNS; i++)
	{
	for (int j = 0; j < NUM_ROWS; j++)
	{
	if (arrEnem[i][j].active) //checks if enemy active
	{
	if (width - 80 < arrEnem[i][j].x_pos && arrEnem[i][j].speed > 0) //if moving to the right and close to right wall
	{
	return true;
	break;
	}
	else if (10 > arrEnem[i][j].x_pos && arrEnem[i][j].speed < 0) //if moving to the left and close to left wall
	{
	return true;
	break;
	}
	}
	}
	}
	return false;
	}

	void InitBackground(BackGround &back, float x, float y, float velx, float vely, int width, int height, int dirX, int dirY, ALLEGRO_BITMAP *image)
	{
	back.x = x;
	back.y = y;
	back.velX = velx;
	back.velY = vely;
	back.WIDTH = width;
	back.HEIGHT = height;
	back.dirX = dirX;
	back.dirY = dirY;
	back.image = image;
	}

	void UpdateBackground(BackGround &back)
	{
	back.x += back.velX * back.dirX;

	if (back.WIDTH < 1024 && back.x + back.WIDTH <= 100)
	back.x = 0;
	else if (back.WIDTH > 1024 && back.x + back.WIDTH <= 0)
	back.x = 0;
	}

	void DrawBackground(BackGround &back)
	{
	al_draw_bitmap(back.image, back.x, back.y, 0);
	al_draw_bitmap(back.image, back.x + back.WIDTH, back.HEIGHT, 0);
	al_draw_bitmap(back.image, back.x, back.HEIGHT, 0);
	al_draw_bitmap(back.image, back.x + back.WIDTH, back.y, 0);
	}

	void InitBarriers()
	{
	redBarrier[0].SetBarrierpos(50, 500);
	redBarrier[1].SetBarrierpos(435, 500);
	redBarrier[2].SetBarrierpos(820, 500);

	for (int i = 0; i < 3; i++)
	{
	redBarrier[i].setLife(5);
	redBarrier[i].active = true;
	}
	}

	void Reactivate_Enemies()
	{
	for (int i = 0; i < NUM_COLUMNS; i++)
	{
	for (int j = 0; j < NUM_ROWS; j++)
	{
	arrEnem[i][j].active = true;
	}
	}
	}

	void CollideBarrier()
	{
	for (int i = 0; i < 3; i++)
	{
	if (redBarrier[i].active && enemyBullet.status == 1)
	{
	if (enemyBullet.x_pos >(redBarrier[i].x_pos - redBarrier[i].Bleft) && enemyBullet.x_pos<(redBarrier[i].x_pos + redBarrier[i].Bright)
	&& enemyBullet.y_pos>(redBarrier[i].y_pos - redBarrier[i].BHeight) && enemyBullet.y_pos < (redBarrier[i].y_pos + redBarrier[i].BHeight))
	{
	if (redBarrier[i].life_points != 0)
	{
	redBarrier[i].life_points--;
	if (redBarrier[i].life_points == 0)
	{
	redBarrier[i].active = false;
	}
	}
	enemyBullet.status = 0;
	}
	}
	}
	}

	void BulletBarrierCollide()
	{
	for (int i = 0; i < 3; i++)
	{
	if (redBarrier[i].active && playerBullet.status == 1)
	{
	if (playerBullet.x_pos >(redBarrier[i].x_pos - redBarrier[i].Bleft) && playerBullet.x_pos<(redBarrier[i].x_pos + redBarrier[i].Bright)
	&& playerBullet.y_pos>(redBarrier[i].y_pos - redBarrier[i].BHeight) && playerBullet.y_pos < (redBarrier[i].y_pos + redBarrier[i].BHeight))
	{
	playerBullet.status = 0;
	}
	}
	}
	}

	void updateEnemyCount()
	{
	if (numAlive == 0)
	{
	EnemyWaveCount++;
	numAlive = NUM_COLUMNS*NUM_ROWS;
	Reactivate_Enemies();
	Reactivate_Barriers();
	setEnemy();

	switch (player.health)
	{
	case 50:
	player.health += 10;
	break;
	case 40:
	player.health += 20;
	break;
	case 30:
	player.health += 20;
	break;
	case 20:
	player.health += 20;
	break;
	case 10:
	player.health += 20;
	break;
	}
	}
	}

	void EnemyReachEnd()
	{
	for (int i = 0; i < NUM_COLUMNS; i++)
	{
	for (int j = 0; j < NUM_ROWS; j++)
	{
	if (arrEnem[i][j].active == true)
	{
	if (arrEnem[i][j].y_pos > redBarrier[0].y_pos - redBarrier[0].BHeight)
	{
	gameState = 3;
	}
	}
	}
	}
	}

	void Reactivate_Barriers()
	{
	for (int b = 0; b < 3; b++)
	{
	redBarrier[b].life_points = 5;
	redBarrier[b].active = true;
	}
	}

	void UpdateBarrierImages(ALLEGRO_BITMAP *SpaceBarrier[])
	{
	for (int i = 0; i < 3; i++)
	{
	if (redBarrier[i].life_points != -1)
	{
	redBarrier[i].CurrentImage = SpaceBarrier[redBarrier[i].life_points];
	}

	if (redBarrier[i].life_points == 5)
	redBarrier[i].CurrentImage = SpaceBarrier[4];
	if (redBarrier[i].life_points == 4)
	redBarrier[i].CurrentImage = SpaceBarrier[3];
	if (redBarrier[i].life_points == 3)
	redBarrier[i].CurrentImage = SpaceBarrier[2];
	if (redBarrier[i].life_points == 2)
	redBarrier[i].CurrentImage = SpaceBarrier[1];
	if (redBarrier[i].life_points == 1)
	redBarrier[i].CurrentImage = SpaceBarrier[0];
	}
	}

	void DrawAnimation(ALLEGRO_BITMAP *pic, int &x)
	{
	al_draw_bitmap(pic, x, 350, 0);
	x = x + 6;

	if (x > width - 20)
	{
	gameState = 2;
	}
	}

	void readScores()
	{
	ifstream myfile("scores.txt");
	string line;
	Highscores temp;
	int count = 0;

	while (myfile.good())
	{
	getline(myfile, line);
	//now you must split the line. Easiest way to do it is like this:
	temp.score = stoi(line.substr(0, (int)line.find(' '))); //get substring from index 0 to space and convert it to integer
	temp.name = line.substr((int)line.find(' ') + 1); //get substring from space and to the end of the string

	arrScores[count].name = temp.name;
	arrScores[count].score = temp.score;
	count++;
	}

	myfile.close();
	lowScore = arrScores[9].score;
	}

	void writeScore()
	{
	int pos = 9 - 1;
	int i = 0;

	while (score > arrScores[pos].score && pos >= 0)
	{
	arrScores[pos + 1] = arrScores[pos];
	pos--;
	}
	arrScores[pos + 1].score = score;
	arrScores[pos + 1].name = nameString;

	ofstream OutputFile("scores.txt");
	for (i = 0; i < 9; i++)
	{
	if (arrScores[i].name == "")
	arrScores[i].name = "NAME";
	OutputFile << arrScores[i].score << " " << arrScores[i].name << endl;
	}

	if (arrScores[i].name == "")
	arrScores[i].name = "NAME";
	OutputFile << arrScores[i].score << " " << arrScores[i].name;

	OutputFile.close();
	}

	void gameRestart()
	{
	gameState = 1;
	readScores(); //reads in scores from textfile
	Reactivate_Enemies();
	Reactivate_Barriers();
	setEnemy();
	player.active = true;
	player.health = 60;
	score = 0;
	numAlive = NUM_COLUMNS*NUM_ROWS;
	EnemyWaveCount = 0;
	input = 0; //count variable to ensure action occurs only once
	output = 0; //count variable to ensure action occurs only once
	x = 20; //initial position of animated ship *nameString;
	startAnim = false;
	isHighscore = false; //will be true if user's score is higher than lowest highscore //value of lowest highscore
	}

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