Sorry. I swear a read key. Haha
Here is a version of the code working with two buttons to pause and unpause (bt_18 and bt_19). I only updated the beginning.
package
{
import flash.events.MouseEvent;
import flash.display.MovieClip;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.events.Event; //used for ENTER_FRAME event
public class Main extends MovieClip
{
//constants
const gravity: Number = 1.5; //gravity of the game
const dist_btw_obstacles: Number = 300; //distance between two obstacles
const ob_speed: Number = 8; //speed of the obstacle
const jump_force: Number = 15; //force with which it jumps
//variables
var player: Player = new Player();
var lastob: Obstacle = new Obstacle(); //varible to store the last obstacle in the obstacle array
var obstacles: Array = new Array(); //an array to store all the obstacles
var yspeed: Number = 0; //A variable representing the vertical speed of the bird
var score: Number = 0; //A variable representing the score
var paused:Boolean = false;
public function Main()
{
init();
}
function init(): void
{
//initialize all the variables
player = new Player();
lastob = new Obstacle();
obstacles = new Array();
yspeed = 0;
score = 0;
//add player to center of the stage the stage
player.x = stage.stageWidth / 2;
player.y = stage.stageHeight / 2;
addChild(player);
//create 3 obstacles ()
createObstacle();
createObstacle();
createObstacle();
//Add EnterFrame EventListeners (which is called every frame) and KeyBoard EventListeners
addEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
stage.addEventListener(KeyboardEvent.KEY_UP, key_up);
bt_18.addEventListener(MouseEvent.MOUSE_DOWN, mouseHandler);
bt_19.addEventListener(MouseEvent.MOUSE_DOWN, mouseHandler);
}
private function mouseHandler(event: MouseEvent)
{
if (!paused && event.currentTarget == bt_18)
{
paused = true;
removeEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
}
else if (paused && event.currentTarget == bt_19)
{
paused = false;
addEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
}
}
private function key_up(event: KeyboardEvent)
{
if (event.keyCode == Keyboard.SPACE)
{
if (!paused)
{
//If space is pressed then make the bird
yspeed = -jump_force;
}
}
}
function restart()
{
if (contains(player))
removeChild(player);
for (var i: int = 0; i < obstacles.length; ++i)
{
if (contains(obstacles) && obstacles != null)
removeChild(obstacles);
obstacles = null;
}
obstacles.slice(0);
init();
}
function onEnterFrameHandler(event: Event)
{
//update player
yspeed += gravity;
player.y += yspeed;
//restart if the player touches the ground
if (player.y + player.height / 2 > stage.stageHeight)
{
restart();
}
//Don't allow the bird to go above the screen
if (player.y - player.height / 2 < 0)
{
player.y = player.height / 2;
}
//update obstacles
for (var i: int = 0; i < obstacles.length; ++i)
{
updateObstacle(i);
}
//display the score
scoretxt.text = String(score);
}
//This functions update the obstacle
function updateObstacle(i: int)
{
var ob: Obstacle = obstacles;
if (ob == null)
return;
ob.x -= ob_speed;
if (ob.x < -ob.width)
{
//if an obstacle reaches left of the stage then change its position to the back of the last obstacle
changeObstacle(ob);
}
//If the bird hits an obstacle then restart the game
if (ob.hitTestPoint(player.x + player.width / 2, player.y + player.height / 2, true) || ob.hitTestPoint(player.x + player.width / 2, player.y - player.height / 2, true) || ob.hitTestPoint(player.x - player.width / 2, player.y + player.height / 2, true) || ob.hitTestPoint(player.x - player.width / 2, player.y - player.height / 2, true))
{
restart();
}
//If the bird got through the obstacle without hitting it then increase the score
if ((player.x - player.width / 2 > ob.x + ob.width / 2) && !ob.covered)
{
++score;
ob.covered = true;
}
}
//This function changes the position of the obstacle such that it will be the last obstacle and it also randomizes its y position
function changeObstacle(ob: Obstacle)
{
ob.x = lastob.x + dist_btw_obstacles;
ob.y = 100 + Math.random() * (stage.stageHeight - 200);
lastob = ob;
ob.covered = false;
}
//this function creates an obstacle
function createObstacle()
{
var ob: Obstacle = new Obstacle();
if (lastob.x == 0)
ob.x = 800;
else
ob.x = lastob.x + dist_btw_obstacles;
ob.y = 100 + Math.random() * (stage.stageHeight - 200);
addChild(ob);
obstacles.push(ob);
lastob = ob;
}
}
}
1 Correct answer
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