var game;
var gameOptions = {
gameWidth: 800,
floorStart: 1 / 8 * 5,
floorGap: 250,
playerGravity: 10000,
playerSpeed: 450,
climbSpeed: 450,
playerJump: 1800,
diamondRatio: 2,
doubleSpikeRatio: 1,
skyColor: 0xaaeaff,
safeRadius: 180,
localStorageName: "climbgame",
versionNumber: "1.0"
}
window.onload = function() {
var windowWidth = window.innerWidth;
var windowHeight = window.innerHeight;
if(windowWidth > windowHeight){
windowHeight = windowWidth * 1.8
}
game = new Phaser.Game(gameOptions.gameWidth, windowHeight * gameOptions.gameWidth / windowWidth);
game.state.add("PreloadGame", preloadGame);
game.state.add("PlayGame", playGame);
game.state.start("PreloadGame");
}
var preloadGame = function(game){}
preloadGame.prototype = {
preload: function(){
game.stage.backgroundColor = gameOptions.skyColor;
game.scale.scaleMode = Phaser.ScaleManager.SHOW_ALL;
game.scale.pageAlignHorizontally = true;
game.scale.pageAlignVertically = true;
game.stage.disableVisibilityChange = true;
game.load.image("floor", "floor.png");
game.load.image("hero", "hero.png");
game.load.image("ladder", "ladder.png");
game.load.image("diamond", "diamond.png");
game.load.image("diamondparticle", "diamondparticle.png");
game.load.image("spike", "spike.png");
game.load.image("cloud", "cloud.png");
game.load.image("tap", "tap.png");
game.load.bitmapFont("font", "font.png", "font.fnt");
},
create: function(){
game.state.start("PlayGame");
}
}
var playGame = function(game){}
playGame.prototype = {
create: function(){
this.savedData = localStorage.getItem(gameOptions.localStorageName) == null ? {score : 0} : JSON.parse(localStorage.getItem(gameOptions.localStorageName));
this.gameOver = false;
this.reachedFloor = 0;
this.collectedDiamonds = 0;
game.physics.startSystem(Phaser.Physics.ARCADE);
this.canJump = true;
this.isClimbing = false;
this.defineGroups();
this.emitter = game.add.emitter(0, 0, 80);
this.emitter.makeParticles("diamondparticle");
this.emitter.setAlpha(0.4, 0.6);
this.emitter.setScale(0.4, 0.6, 0.4, 0.6);
this.gameGroup.add(this.emitter);
this.drawLevel();
this.defineTweens();
this.createMenu();
this.createOverlay();
game.input.onTap.add(this.handleTap, this);
},
createOverlay: function(){
var cloud = game.add.sprite(0, game.height, "cloud");
cloud.anchor.set(0, 1);
cloud.tint = gameOptions.skyColor;
this.overlayGroup.add(cloud);
var highScoreText = game.add.bitmapText(game.width - 10, game.height - 10, "font", "Best Score: " + this.savedData.score.toString(), 30);
highScoreText.anchor.set(1, 1);
this.overlayGroup.add(highScoreText);
this.scoreText = game.add.bitmapText(10, game.height - 10, "font", "Score: 0", 30);
this.scoreText.anchor.set(0, 1);
this.overlayGroup.add(this.scoreText);
},
createMenu: function(){
var tap = game.add.sprite(game.width / 2, game.height - 150, "tap");
tap.anchor.set(0.5);
this.menuGroup.add(tap);
tapTween = game.add.tween(tap).to({
alpha: 0
}, 200, Phaser.Easing.Cubic.InOut, true, 0, -1, true);
var tapText = game.add.bitmapText(game.width / 2, tap.y - 120, "font", "Tap to jump", 45);
tapText.anchor.set(0.5);
this.menuGroup.add(tapText);
var titleText = game.add.bitmapText(game.width / 2, tap.y - 200, "font", "LADDERZ", 90);
titleText.anchor.set(0.5);
this.menuGroup.add(titleText);
},
drawLevel: function(){
this.currentFloor = 0;
this.highestFloorY = game.height * gameOptions.floorStart;
this.floorsBeforeDisappear = Math.ceil((game.height - game.height * (gameOptions.floorStart)) / gameOptions.floorGap) + 1;
this.floorPool = [];
this.ladderPool = [];
this.diamondPool = [];
this.spikePool = [];
while(this.highestFloorY > - 2 * gameOptions.floorGap){
this.addFloor();
if(this.currentFloor > 0){
this.addLadder();
this.addDiamond();
this.addSpike();
}
this.highestFloorY -= gameOptions.floorGap;
this.currentFloor ++;
}
this.highestFloorY += gameOptions.floorGap;
this.currentFloor = 0;
this.addHero();
},
addFloor: function(){
if(this.floorPool.length > 0){
var floor = this.floorPool.pop();
floor.y = this.highestFloorY;
floor.revive();
}
else{
var floor = game.add.sprite(0, this.highestFloorY, "floor");
this.floorGroup.add(floor);
game.physics.enable(floor, Phaser.Physics.ARCADE);
floor.body.immovable = true;
floor.body.checkCollision.down = false;
}
},
addLadder: function(){
var ladderXPosition = game.rnd.integerInRange(50, game.width - 50);
if(this.ladderPool.length > 0){
var ladder = this.ladderPool.pop();
ladder.x = ladderXPosition;
ladder.y = this.highestFloorY;
ladder.revive();
}
else{
var ladder = game.add.sprite(ladderXPosition, this.highestFloorY, "ladder");
this.ladderGroup.add(ladder);
ladder.anchor.set(0.5, 0);
game.physics.enable(ladder, Phaser.Physics.ARCADE);
ladder.body.immovable = true;
}
this.safeZone = [];
this.safeZone.length = 0;
this.safeZone .push({
start: ladderXPosition - gameOptions.safeRadius,
end: ladderXPosition + gameOptions.safeRadius
});
},
addDiamond: function(){
if(game.rnd.integerInRange(0, gameOptions.diamondRatio) != 0){
var diamondX = game.rnd.integerInRange(50, game.width - 50);
if(this.diamondPool.length > 0){
var diamond = this.diamondPool.pop();
diamond.x = diamondX;
diamond.y = this.highestFloorY - gameOptions.floorGap / 2;
diamond.revive();
}
else{
var diamond = game.add.sprite(diamondX, this.highestFloorY - gameOptions.floorGap / 2, "diamond");
diamond.anchor.set(0.5);
game.physics.enable(diamond, Phaser.Physics.ARCADE);
diamond.body.immovable = true;
this.diamondGroup.add(diamond);
}
}
},
addSpike: function(){
var spikes = 1;
if(game.rnd.integerInRange(0, gameOptions.doubleSpikeRatio) == 0){
spikes = 2;
}
for(var i = 1; i <= spikes; i++){
var spikeXPosition = this.findSpikePosition();
if(spikeXPosition){
if(this.spikePool.length > 0){
var spike = this.spikePool.pop();
spike.x = spikeXPosition;
spike.y = this.highestFloorY - 20;
spike.revive();
}
else{
var spike = game.add.sprite(spikeXPosition, this.highestFloorY - 20, "spike");
spike.anchor.set(0.5, 0);
game.physics.enable(spike, Phaser.Physics.ARCADE);
spike.body.immovable = true;
this.spikeGroup.add(spike);
}
}
}
},
findSpikePosition: function(){
var attempts = 0;
do{
attempts ++;
var posX = game.rnd.integerInRange(150, game.width - 150)
} while(!this.isSafe(posX) && attempts < 10);
if(this.isSafe(posX)){
this.safeZone.push({
start: posX - gameOptions.safeRadius,
end: posX + gameOptions.safeRadius
})
return posX;
}
return false;
},
isSafe: function(n){
for(var i = 0; i < this.safeZone.length; i++){
if(n > this.safeZone[i].start && n < this.safeZone[i].end){
return false;
}
}
return true;
},
addHero: function(){
this.hero = game.add.sprite(game.width / 2, game.height * gameOptions.floorStart - 40, "hero");
this.gameGroup.add(this.hero)
this.hero.anchor.set(0.5, 0);
game.physics.enable(this.hero, Phaser.Physics.ARCADE);
this.hero.body.collideWorldBounds = true;
this.hero.body.gravity.y = gameOptions.playerGravity;
this.hero.body.velocity.x = gameOptions.playerSpeed;
this.hero.body.onWorldBounds = new Phaser.Signal();
this.hero.body.onWorldBounds.add(function(sprite, up, down, left, right){
if(left){
this.hero.body.velocity.x = gameOptions.playerSpeed;
this.hero.scale.x = 1;
}
if(right){
this.hero.body.velocity.x = -gameOptions.playerSpeed;
this.hero.scale.x = -1;
}
if(down){
var score = this.reachedFloor * this.collectedDiamonds;
localStorage.setItem(gameOptions.localStorageName,JSON.stringify({
score: Math.max(score, this.savedData.score)
}));
game.state.start("PlayGame");
}
}, this)
},
defineTweens: function(){
this.tweensToGo = 0;
this.scrollTween = game.add.tween(this.gameGroup);
this.scrollTween.to({
y: gameOptions.floorGap
}, 500, Phaser.Easing.Cubic.Out);
this.scrollTween.onComplete.add(function(){
this.gameGroup.y = 0;
this.gameGroup.forEach(function(item){
if(item.length > 0){
item.forEach(function(subItem) {
subItem.y += gameOptions.floorGap;
if(subItem.y > game.height){
switch(subItem.key){
case "floor":
this.killFloor(subItem);
break;
case "ladder":
this.killLadder(subItem);
break;
case "diamond":
this.killDiamond(subItem);
break;
case "spike":
this.killSpike(subItem);
break;
}
}
}, this);
}
else{
item.y += gameOptions.floorGap;
}
}, this);
this.addFloor();
this.addLadder();
this.addDiamond();
this.addSpike();
if(this.tweensToGo > 0){
this.tweensToGo --;
this.scrollTween.start();
}
}, this);
},
defineGroups: function(){
this.gameGroup = game.add.group();
this.floorGroup = game.add.group();
this.ladderGroup = game.add.group();
this.diamondGroup = game.add.group();
this.spikeGroup = game.add.group();
this.overlayGroup = game.add.group();
this.menuGroup = game.add.group();
this.gameGroup.add(this.floorGroup);
this.gameGroup.add(this.ladderGroup);
this.gameGroup.add(this.diamondGroup);
this.gameGroup.add(this.spikeGroup);
},
handleTap: function(pointer, doubleTap){
if(this.menuGroup != null){
this.menuGroup.destroy();
}
if(this.canJump && !this.isClimbing && !this.gameOver){
this.hero.body.velocity.y = -gameOptions.playerJump;
this.canJump = false;
}
},
update: function(){
if(!this.gameOver){
this.checkFloorCollision();
this.checkLadderCollision();
this.checkDiamondCollision();
this.checkSpikeCollision();
}
},
checkFloorCollision: function(){
game.physics.arcade.collide(this.hero, this.floorGroup, function(){
this.canJump = true;
}, null, this);
},
checkLadderCollision: function(){
if(!this.isClimbing){
game.physics.arcade.overlap(this.hero, this.ladderGroup, function(player, ladder){
if(Math.abs(player.x - ladder.x) < 10){
this.ladderToClimb = ladder;
this.hero.body.velocity.x = 0;
this.hero.body.velocity.y = - gameOptions.climbSpeed;
this.hero.body.gravity.y = 0;
this.isClimbing = true;
if(this.scrollTween.isRunning){
this.tweensToGo ++;
}
else{
this.scrollTween.start();
}
}
}, null, this);
}
else{
if(this.hero.y < this.ladderToClimb.y - 40){
this.hero.body.gravity.y = gameOptions.playerGravity;
this.hero.body.velocity.x = gameOptions.playerSpeed * this.hero.scale.x;
this.hero.body.velocity.y = 0;
this.isClimbing = false;
this.reachedFloor ++;
this.scoreText.text = (this.collectedDiamonds * this.reachedFloor).toString();
}
}
},
checkDiamondCollision: function(){
game.physics.arcade.overlap(this.hero, this.diamondGroup, function(player, diamond){
this.emitter.x = diamond.x;
this.emitter.y = diamond.y;
this.emitter.start(true, 1000, null, 20);
this.collectedDiamonds ++;
this.scoreText.text = (this.collectedDiamonds * this.reachedFloor).toString();
this.killDiamond(diamond);
}, null, this);
},
checkSpikeCollision: function(){
game.physics.arcade.overlap(this.hero, this.spikeGroup, function(){
this.gameOver = true;
this.hero.body.velocity.x = game.rnd.integerInRange(-20, 20);
this.hero.body.velocity.y = -gameOptions.playerJump;
this.hero.body.gravity.y = gameOptions.playerGravity;
}, null, this);
},
killFloor: function(floor){
floor.kill();
this.floorPool.push(floor);
},
killLadder: function(ladder){
ladder.kill();
this.ladderPool.push(ladder);
},
killDiamond: function(diamond){
diamond.kill();
this.diamondPool.push(diamond);
},
killSpike: function(spike){
spike.kill();
this.spikePool.push(spike);
},
}
We have a complete game in less than 400 lines, but if you have some new features in mind, leave a comment and I’ll try to add them to the game. Also, download the source code and play with itPlay “Ladderz”, the complete HTML5 game based on “Mike Dangers” concept
Read all posts about "Mike Dangers" game
And finally we have a complete game to play. Without sounds, because well, just add them if you want, it’s not a commercial game.
The “Mike Dangers” series developed with Phaser ends with this game, which I called “Ladderz”, but I will port it to other engines.
Also, a more complete and polished version is coming to your screens, with a full “How to” guide, so stay tuned.
You know the game: climb ladders, collect diamonds and avoid spikes, score is determined multiplying the floor reached by the number of diamonds collected. Also, every floor can be played and it’s not “impossible”, so if you fail, don’t blame on the game.
I also tried to keep the code as clean as possible, if you have questions don’t hesitate to ask:
