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             damage(amount) {
 165                 super.damage(amount);
 166                 if (this.alive) { game.add.tween(this).to({ x: this.x + (Math.random() - 0.5) * 10 }, 10, Phaser.Easing.Sinusoidal.InOut, true, 0, 8, true); }
 167             }
 168
 169             kill() {
 170                 super.kill();
 171                 player.loveUp();
 172             }
 173
 174             overlap_player(player) {
 175                 player.damage(10);
 176                 player.switchmode(MODE_DETERMINATION);
 177             }
 178
 179             update() {
 180                 super.update();
 181                 if (this.alive && player.alive && (game.time.now > this.nexttime_shoot))
 182                 {
 183                     this.weapon.fireAtSprite(player);
 184                     this.nexttime_shoot = game.time.now + (WAIT_MONSTERSHOOT / 2) + (Math.random() * WAIT_MONSTERSHOOT);
 185                 }
 186                 game.physics.arcade.overlap(player, this.weapon.bullets, function(p,b) { b.overlap_player(p); });
 187             }
 188         }
 189
 190         class Determination extends Phaser.Sprite {
 191             constructor(x, y) {
 192                 super(game, x, y, 'determination');
 193                 this.anchor.setTo(0.5, 0.5);
 194             }
 195
 196             enablePhysics() {
 197                 game.physics.arcade.enable(this);
 198             }
 199         }
 200
 201         class Justice extends Phaser.Bullet {
 202             constructor(game, x, y, key, frame) {
 203                 super(game, x, y, 'projectile');
 204                 this.anchor.setTo(0.5, 0.5);
 205             }
 206
 207             overlap_monster(entity) {
 208                 entity.damage(player.love);
 209                 this.kill();
 210             }
 211
 212             overlap_player(player) {
 213                 player.damage(player.love);
 214                 this.kill();
 215             }
 216         }
 217
 218         class JusticeBlaster extends Phaser.Weapon {
 219             constructor(game, parent) {
 220                 super(game, parent);
 221                 this.bulletClass = Justice;
 222                 this.multiFire = true;
 223                 this.createBullets(100, null);
 224             }
 225         }
 226
 227         class HealthBar {
 228             constructor(x, y) {
 229                 this.mhealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 230                 this.ahealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 231                 this.mhealth.anchor.setTo(0, 0.5);
 232                 this.ahealth.anchor.setTo(0, 0.5);
 233                 this.mhealth.tint = '0xff0000';
 234                 this.ahealth.tint = '0xffff00';
 235                 this.text_love = new Phaser.Text(game, x - 50, y + 2, null, { align: 'center', fill: 'white', font: 'Ubuntu Mono', fontSize: 16, fontWeight: 'bold' });
 236                 this.text_love.anchor.setTo(0, 0.5);
 237                 game.add.existing(this.text_love);
 238             }
 239
 240             update(love, mhealth, ahealth) {
 241                 this.mhealth.width = mhealth;
 242                 this.ahealth.width = ahealth;
 243                 this.text_love.text = "LV " + love;
 244             }
 245         }
 246
 247         function preload () {
 248
 249             game.load.image('wall', 'wall.png');
 250             game.load.image('player', 'player.png');
 251             game.load.image('monster', 'monster.png');
 252             game.load.image('determination', 'determination.png');
 253             game.load.image('projectile', 'projectile.png');
 254
 255         }
 256
 257         function create () {
 258
 259             game.world.setBounds(0, 0, 800, 600);
 260             game.stage.backgroundColor = '#000000';
 261             game.physics.startSystem(Phaser.Physics.ARCADE);
 262
 263             walls = game.add.group();
 264             walls.classType = Phaser.TileSprite;
 265             walls.enableBody = true;
 266
 267             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 268             walls.add(game.add.tileSprite(WALL_BORDER, game.world.height - WALL_THICKNESS - WALL_BORDERBOTTOM, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 269             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 270             walls.add(game.add.tileSprite(game.world.width - WALL_THICKNESS - WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 271             walls.children.forEach(function(wall) { wall.body.immovable = true; });
 272
 273             determinations = game.add.group();
 274             nexttime_determination = Math.random() * WAIT_DETERMINATION;
 275
 276             monsters = game.add.group();
 277             nexttime_monsterspawn = WAIT_MONSTERSPAWN / 4;
 278
 279             player = new Player(game.world.width / 2, game.world.height / 2);
 280             player.enablePhysics();
 281             game.add.existing(player);
 282             game.camera.follow(player);
 283             cursors = game.input.keyboard.createCursorKeys();
 284
 285         }
 286
 287         function update () {
 288
 289             game.physics.arcade.collide(player, walls);
 290             game.physics.arcade.overlap(player, determinations, function(p,d) { p.overlap_determination(d); });
 291             game.physics.arcade.overlap(player, monsters, function(p,m) { m.overlap_player(p); });
 292
 293             if (game.time.now > nexttime_determination)
 294             {
 295                 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));
 296                 determination.enablePhysics();
 297                 determinations.add(determination);
 298                 nexttime_determination = game.time.now + (WAIT_DETERMINATION / 2) + (Math.random() * WAIT_DETERMINATION);
 299             }
 300
 301             if (game.time.now > nexttime_monsterspawn)
 302             {
 303                 var monster = new Monster(Math.random() * game.world.width, Math.random() * game.world.height);
 304                 monster.enablePhysics();
 305                 monsters.add(monster);
 306                 var waittime = WAIT_MONSTERSPAWN - ((Math.random() * 2000) * player.love);
 307                 nexttime_monsterspawn = game.time.now + waittime;
 308                 console.log('Next monster in ' + waittime);
 309             }
 310
 311             if ((game.time.now - player.lastmovetime) > WAIT_KEY) player.body.velocity.x = player.body.velocity.y = 0;
 312
 313         }