ld40.js

   1         var game = new Phaser.Game(800, 600, Phaser.AUTO, '', { preload: preload, create: create, update: update });
   2         var player;
   3         var walls;
   4         var determinations;             // I know it's grammatically incorrect. :P
   5         var monsters;
   6         var nexttime_monsterspawn;
   7         var nexttime_determination;
   8
   9         const WAIT_KEY                  =    200;
  10         const WAIT_SHOOT                =    200;
  11         const WAIT_INVINCIBILITY        =    800;
  12         const WAIT_SOULMODE             =  10000;
  13         const WAIT_MONSTERSHOOT         =    500;
  14         const WAIT_MONSTERSPAWN         =  20000;
  15         const WAIT_DETERMINATION        =   4000;
  16         const WALL_THICKNESS            =     16;
  17         const WALL_BORDER               =      8;
  18         const WALL_BORDERBOTTOM         =     48;
  19         const HB_THICKNESS              =     20;
  20         const MAX_HEALTH                =     20;
  21         const MONSTER_HEALTH            =     20;
  22         const MODE_DETERMINATION        =      0;
  23         const MODE_JUSTICE              =      1;
  24         const SPEED_PLAYER              =    150;
  25         const SPEED_PPROJECTILE         =    500;
  26         const SPEED_MPROJECTILE         =    200;
  27
  28         window.addEventListener("keydown", function(e) {
  29             // Prevent default browser action for arrows and spacebar
  30             if([32, 37, 38, 39, 40].indexOf(e.keyCode) > -1) {
  31             e.preventDefault();
  32             }
  33         }, false);
  34
  35
  36         class Player extends Phaser.Text {
  37             constructor(x, y) {
  38                 super(game, x, y, "♥️", { align: 'center', fill: 'red', font: 'Ubuntu Mono', fontSize: 32, fontWeight: 'bold' });
  39                 this.anchor.setTo(0.5, 0.5);
  40                 this.maxHealth = MAX_HEALTH;
  41                 this.health = this.maxHealth;
  42                 this.love = 1;
  43                 this.lastmovetime = 0;
  44                 this.lasttime_shoot = 0;
  45                 this.lasttime_mode = 0;
  46                 this.lasttime_damage = 0;
  47                 this.speed = SPEED_PLAYER;
  48                 this.switchmode(MODE_DETERMINATION);
  49                 this.weapon = new JusticeBlaster(game, this);
  50                 this.weapon.bulletSpeed = SPEED_PPROJECTILE;
  51                 this.healthBar = new HealthBar(60, game.world.height - (WALL_BORDERBOTTOM / 2));
  52             }
  53
  54             enablePhysics() {
  55                 game.physics.arcade.enable(this);
  56                 this.body.bounce.y = 0.2;
  57                 this.body.bounce.x = 0.2;
  58                 this.body.collideWorldBounds = true;
  59             }
  60
  61             overlap_determination(determination) {
  62                 determination.kill();
  63                 this.heal(2);
  64                 this.speed += 50;
  65                 this.switchmode(MODE_JUSTICE);
  66             }
  67
  68             damage(amount) {
  69                 if ((game.time.now - this.lasttime_damage) > WAIT_INVINCIBILITY)
  70                 {
  71                     super.damage(amount);
  72                     this.lasttime_damage = game.time.now;
  73                 }
  74             }
  75
  76             kill() {
  77                 this.health = 0;
  78                 this.healthBar.update(this.love, this.maxHealth, this.health);
  79                 super.kill();
  80             }
  81
  82             loveUp() {
  83                 this.love++
  84                 this.maxHealth += this.love;
  85                 this.heal(this.love);
  86             }
  87
  88             control() {
  89                 if (this.alive)
  90                 {
  91                     if (cursors.left.isDown)
  92                     {
  93                         player.body.velocity.x = -player.speed;
  94                         player.lastmovetime = game.time.now;
  95                     }
  96                     else if (cursors.right.isDown)
  97                     {
  98                         player.body.velocity.x = player.speed;
  99                         player.lastmovetime = game.time.now;
 100                     }
 101                     if (cursors.up.isDown)
 102                     {
 103                         player.body.velocity.y = -player.speed;
 104                         player.lastmovetime = game.time.now;
 105                     }
 106                     else if (cursors.down.isDown)
 107                     {
 108                         player.body.velocity.y = player.speed;
 109                         player.lastmovetime = game.time.now;
 110                     }
 111                     if ((this.mode == MODE_JUSTICE) && game.input.keyboard.isDown(Phaser.Keyboard.SPACEBAR) && ((game.time.now - this.lasttime_shoot) > WAIT_SHOOT))
 112                     {
 113                         this.shoot();
 114                     }
 115                 }
 116             }
 117
 118             switchmode(soulmode) {
 119                 switch(soulmode)
 120                 {
 121                     case MODE_DETERMINATION:
 122                         this.addColor('red', 0);
 123                         break;
 124                     case MODE_JUSTICE:
 125                         this.addColor('yellow', 0);
 126                         this.lasttime_mode = game.time.now;
 127                         break;
 128                 }
 129                 this.mode = soulmode;
 130             }
 131
 132             shoot() {
 133                 this.weapon.fire(this, 0, this.y);
 134                 this.weapon.fire(this, this.x, 0);
 135                 this.weapon.fire(this, this.x, game.world.height);
 136                 this.weapon.fire(this, game.world.width, this.y);
 137                 this.lasttime_shoot = game.time.now;
 138             }
 139
 140             update() {
 141                 super.update();
 142                 this.control();
 143                 this.healthBar.update(this.love, this.maxHealth, this.health);
 144                 game.physics.arcade.overlap(monsters, this.weapon.bullets, function(m,b) { b.overlap_monster(m); });
 145                 if ((game.time.now - this.lasttime_mode) > WAIT_SOULMODE) { this.switchmode(MODE_DETERMINATION); }
 146             }
 147         }
 148
 149         class Monster extends Phaser.Sprite {
 150             constructor(x, y) {
 151                 super(game, x, y, 'monster');
 152                 this.anchor.setTo(0.5, 0.5);
 153                 this.health = MONSTER_HEALTH;
 154                 this.nexttime_shoot = game.time.now;
 155                 this.weapon = new JusticeBlaster(game, this);
 156                 this.weapon.bulletSpeed = SPEED_MPROJECTILE;
 157                 this.weapon.trackSprite(this);
 158             }
 159
 160             enablePhysics() {
 161                 game.physics.arcade.enable(this);
 162             }
 163
 164             kill() {
 165                 super.kill();
 166                 player.loveUp();
 167             }
 168
 169             overlap_player(player) {
 170                 player.damage(10);
 171                 player.switchmode(MODE_DETERMINATION);
 172             }
 173
 174             update() {
 175                 super.update();
 176                 if (this.alive && player.alive && (game.time.now > this.nexttime_shoot))
 177                 {
 178                     this.weapon.fireAtSprite(player);
 179                     this.nexttime_shoot = game.time.now + (WAIT_MONSTERSHOOT / 2) + (Math.random() * WAIT_MONSTERSHOOT);
 180                 }
 181                 game.physics.arcade.overlap(player, this.weapon.bullets, function(p,b) { b.overlap_player(p); });
 182             }
 183         }
 184
 185         class Determination extends Phaser.Sprite {
 186             constructor(x, y) {
 187                 super(game, x, y, 'determination');
 188                 this.anchor.setTo(0.5, 0.5);
 189             }
 190
 191             enablePhysics() {
 192                 game.physics.arcade.enable(this);
 193             }
 194         }
 195
 196         class Justice extends Phaser.Bullet {
 197             constructor(game, x, y, key, frame) {
 198                 super(game, x, y, 'projectile');
 199                 this.anchor.setTo(0.5, 0.5);
 200             }
 201
 202             overlap_monster(entity) {
 203                 entity.damage(player.love);
 204                 this.kill();
 205             }
 206
 207             overlap_player(player) {
 208                 player.damage(player.love);
 209                 this.kill();
 210             }
 211         }
 212
 213         class JusticeBlaster extends Phaser.Weapon {
 214             constructor(game, parent) {
 215                 super(game, parent);
 216                 this.bulletClass = Justice;
 217                 this.multiFire = true;
 218                 this.createBullets(100, null);
 219             }
 220         }
 221
 222         class HealthBar {
 223             constructor(x, y) {
 224                 this.mhealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 225                 this.ahealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 226                 this.mhealth.anchor.setTo(0, 0.5);
 227                 this.ahealth.anchor.setTo(0, 0.5);
 228                 this.mhealth.tint = '0xff0000';
 229                 this.ahealth.tint = '0xffff00';
 230                 this.text_love = new Phaser.Text(game, x - 50, y + 2, null, { align: 'center', fill: 'white', font: 'Ubuntu Mono', fontSize: 16, fontWeight: 'bold' });
 231                 this.text_love.anchor.setTo(0, 0.5);
 232                 game.add.existing(this.text_love);
 233             }
 234
 235             update(love, mhealth, ahealth) {
 236                 this.mhealth.width = mhealth;
 237                 this.ahealth.width = ahealth;
 238                 this.text_love.text = "LV " + love;
 239             }
 240         }
 241
 242         function preload () {
 243
 244             game.load.image('wall', 'wall.png');
 245             game.load.image('player', 'player.png');
 246             game.load.image('monster', 'monster.png');
 247             game.load.image('determination', 'determination.png');
 248             game.load.image('projectile', 'projectile.png');
 249
 250         }
 251
 252         function create () {
 253
 254             game.world.setBounds(0, 0, 800, 600);
 255             game.stage.backgroundColor = '#000000';
 256             game.physics.startSystem(Phaser.Physics.ARCADE);
 257
 258             walls = game.add.group();
 259             walls.classType = Phaser.TileSprite;
 260             walls.enableBody = true;
 261
 262             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 263             walls.add(game.add.tileSprite(WALL_BORDER, game.world.height - WALL_THICKNESS - WALL_BORDERBOTTOM, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 264             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 265             walls.add(game.add.tileSprite(game.world.width - WALL_THICKNESS - WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 266             walls.children.forEach(function(wall) { wall.body.immovable = true; });
 267
 268             determinations = game.add.group();
 269             nexttime_determination = Math.random() * WAIT_DETERMINATION;
 270
 271             monsters = game.add.group();
 272             nexttime_monsterspawn = WAIT_MONSTERSPAWN / 4;
 273
 274             player = new Player(game.world.width / 2, game.world.height / 2);
 275             player.enablePhysics();
 276             game.add.existing(player);
 277             game.camera.follow(player);
 278             cursors = game.input.keyboard.createCursorKeys();
 279
 280         }
 281
 282         function update () {
 283
 284             game.physics.arcade.collide(player, walls);
 285             game.physics.arcade.overlap(player, determinations, function(p,d) { p.overlap_determination(d); });
 286             game.physics.arcade.overlap(player, monsters, function(p,m) { m.overlap_player(p); });
 287
 288             if (game.time.now > nexttime_determination)
 289             {
 290                 var determination = new Determination((Math.random() * (game.world.width - ((WALL_THICKNESS + WALL_BORDER) * 4))) + ((WALL_THICKNESS + WALL_BORDER) * 2), (Math.random() * (game.world.height - ((WALL_THICKNESS + WALL_BORDER) * 4) - WALL_BORDERBOTTOM)) + ((WALL_THICKNESS + WALL_BORDER) * 2));
 291                 determination.enablePhysics();
 292                 determinations.add(determination);
 293                 nexttime_determination = game.time.now + (WAIT_DETERMINATION / 2) + (Math.random() * WAIT_DETERMINATION);
 294             }
 295
 296             if (game.time.now > nexttime_monsterspawn)
 297             {
 298                 var monster = new Monster(Math.random() * game.world.width, Math.random() * game.world.height);
 299                 monster.enablePhysics();
 300                 monsters.add(monster);
 301                 var waittime = WAIT_MONSTERSPAWN - ((Math.random() * 2000) * player.love);
 302                 nexttime_monsterspawn = game.time.now + waittime;
 303                 console.log('Next monster in ' + waittime);
 304             }
 305
 306             if ((game.time.now - player.lastmovetime) > WAIT_KEY) player.body.velocity.x = player.body.velocity.y = 0;
 307
 308         }