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             loveUp() {
  77                 this.love++
  78                 this.maxHealth += this.love;
  79                 this.heal(this.love);
  80             }
  81
  82             control() {
  83                 if (this.alive)
  84                 {
  85                     if (cursors.left.isDown)
  86                     {
  87                         player.body.velocity.x = -player.speed;
  88                         player.lastmovetime = game.time.now;
  89                     }
  90                     else if (cursors.right.isDown)
  91                     {
  92                         player.body.velocity.x = player.speed;
  93                         player.lastmovetime = game.time.now;
  94                     }
  95                     if (cursors.up.isDown)
  96                     {
  97                         player.body.velocity.y = -player.speed;
  98                         player.lastmovetime = game.time.now;
  99                     }
 100                     else if (cursors.down.isDown)
 101                     {
 102                         player.body.velocity.y = player.speed;
 103                         player.lastmovetime = game.time.now;
 104                     }
 105                     if ((this.mode == MODE_JUSTICE) && game.input.keyboard.isDown(Phaser.Keyboard.SPACEBAR) && ((game.time.now - this.lasttime_shoot) > WAIT_SHOOT))
 106                     {
 107                         this.shoot();
 108                     }
 109                 }
 110             }
 111
 112             switchmode(soulmode) {
 113                 switch(soulmode)
 114                 {
 115                     case MODE_DETERMINATION:
 116                         this.addColor('red', 0);
 117                         break;
 118                     case MODE_JUSTICE:
 119                         this.addColor('yellow', 0);
 120                         this.lasttime_mode = game.time.now;
 121                         break;
 122                 }
 123                 this.mode = soulmode;
 124             }
 125
 126             shoot() {
 127                 this.weapon.fire(this, 0, this.y);
 128                 this.weapon.fire(this, this.x, 0);
 129                 this.weapon.fire(this, this.x, game.world.height);
 130                 this.weapon.fire(this, game.world.width, this.y);
 131                 this.lasttime_shoot = game.time.now;
 132             }
 133
 134             update() {
 135                 super.update();
 136                 this.control();
 137                 this.healthBar.update(this.love, this.maxHealth, this.health);
 138                 game.physics.arcade.overlap(monsters, this.weapon.bullets, function(m,b) { b.overlap_monster(m); });
 139                 if ((game.time.now - this.lasttime_mode) > WAIT_SOULMODE) { this.switchmode(MODE_DETERMINATION); }
 140             }
 141         }
 142
 143         class Monster extends Phaser.Sprite {
 144             constructor(x, y) {
 145                 super(game, x, y, 'monster');
 146                 this.anchor.setTo(0.5, 0.5);
 147                 this.health = MONSTER_HEALTH;
 148                 this.nexttime_shoot = game.time.now;
 149                 this.weapon = new JusticeBlaster(game, this);
 150                 this.weapon.bulletSpeed = SPEED_MPROJECTILE;
 151                 this.weapon.trackSprite(this);
 152             }
 153
 154             enablePhysics() {
 155                 game.physics.arcade.enable(this);
 156             }
 157
 158             kill() {
 159                 super.kill();
 160                 player.loveUp();
 161             }
 162
 163             overlap_player(player) {
 164                 player.damage(10);
 165                 player.switchmode(MODE_DETERMINATION);
 166             }
 167
 168             update() {
 169                 super.update();
 170                 if (this.alive && player.alive && (game.time.now > this.nexttime_shoot))
 171                 {
 172                     this.weapon.fireAtSprite(player);
 173                     this.nexttime_shoot = game.time.now + (WAIT_MONSTERSHOOT / 2) + (Math.random() * WAIT_MONSTERSHOOT);
 174                 }
 175                 game.physics.arcade.overlap(player, this.weapon.bullets, function(p,b) { b.overlap_player(p); });
 176             }
 177         }
 178
 179         class Determination extends Phaser.Sprite {
 180             constructor(x, y) {
 181                 super(game, x, y, 'determination');
 182                 this.anchor.setTo(0.5, 0.5);
 183             }
 184
 185             enablePhysics() {
 186                 game.physics.arcade.enable(this);
 187             }
 188         }
 189
 190         class Justice extends Phaser.Bullet {
 191             constructor(game, x, y, key, frame) {
 192                 super(game, x, y, 'projectile');
 193                 this.anchor.setTo(0.5, 0.5);
 194             }
 195
 196             overlap_monster(entity) {
 197                 entity.damage(player.love);
 198                 this.kill();
 199             }
 200
 201             overlap_player(player) {
 202                 player.damage(player.love);
 203                 this.kill();
 204             }
 205         }
 206
 207         class JusticeBlaster extends Phaser.Weapon {
 208             constructor(game, parent) {
 209                 super(game, parent);
 210                 this.bulletClass = Justice;
 211                 this.multiFire = true;
 212                 this.createBullets(100, null);
 213             }
 214         }
 215
 216         class HealthBar {
 217             constructor(x, y) {
 218                 this.mhealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 219                 this.ahealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 220                 this.mhealth.anchor.setTo(0, 0.5);
 221                 this.ahealth.anchor.setTo(0, 0.5);
 222                 this.mhealth.tint = '0xff0000';
 223                 this.ahealth.tint = '0xffff00';
 224                 this.text_love = new Phaser.Text(game, x - 50, y + 2, null, { align: 'center', fill: 'white', font: 'Ubuntu Mono', fontSize: 16, fontWeight: 'bold' });
 225                 this.text_love.anchor.setTo(0, 0.5);
 226                 game.add.existing(this.text_love);
 227             }
 228
 229             update(love, mhealth, ahealth) {
 230                 this.mhealth.width = mhealth;
 231                 this.ahealth.width = ahealth;
 232                 this.text_love.text = "LV " + love;
 233             }
 234         }
 235
 236         function preload () {
 237
 238             game.load.image('wall', 'wall.png');
 239             game.load.image('player', 'player.png');
 240             game.load.image('monster', 'monster.png');
 241             game.load.image('determination', 'determination.png');
 242             game.load.image('projectile', 'projectile.png');
 243
 244         }
 245
 246         function create () {
 247
 248             game.world.setBounds(0, 0, 800, 600);
 249             game.stage.backgroundColor = '#000000';
 250             game.physics.startSystem(Phaser.Physics.ARCADE);
 251
 252             walls = game.add.group();
 253             walls.classType = Phaser.TileSprite;
 254             walls.enableBody = true;
 255
 256             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 257             walls.add(game.add.tileSprite(WALL_BORDER, game.world.height - WALL_THICKNESS - WALL_BORDERBOTTOM, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 258             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 259             walls.add(game.add.tileSprite(game.world.width - WALL_THICKNESS - WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 260             walls.children.forEach(function(wall) { wall.body.immovable = true; });
 261
 262             determinations = game.add.group();
 263             nexttime_determination = Math.random() * WAIT_DETERMINATION;
 264
 265             monsters = game.add.group();
 266             nexttime_monsterspawn = WAIT_MONSTERSPAWN / 4;
 267
 268             player = new Player(game.world.width / 2, game.world.height / 2);
 269             player.enablePhysics();
 270             game.add.existing(player);
 271             game.camera.follow(player);
 272             cursors = game.input.keyboard.createCursorKeys();
 273
 274         }
 275
 276         function update () {
 277
 278             game.physics.arcade.collide(player, walls);
 279             game.physics.arcade.overlap(player, determinations, function(p,d) { p.overlap_determination(d); });
 280             game.physics.arcade.overlap(player, monsters, function(p,m) { m.overlap_player(p); });
 281
 282             if (game.time.now > nexttime_determination)
 283             {
 284                 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));
 285                 determination.enablePhysics();
 286                 determinations.add(determination);
 287                 nexttime_determination = game.time.now + (WAIT_DETERMINATION / 2) + (Math.random() * WAIT_DETERMINATION);
 288             }
 289
 290             if (game.time.now > nexttime_monsterspawn)
 291             {
 292                 var monster = new Monster(Math.random() * game.world.width, Math.random() * game.world.height);
 293                 monster.enablePhysics();
 294                 monsters.add(monster);
 295                 var waittime = WAIT_MONSTERSPAWN - ((Math.random() * 2000) * player.love);
 296                 nexttime_monsterspawn = game.time.now + waittime;
 297                 console.log('Next monster in ' + waittime);
 298             }
 299
 300             if ((game.time.now - player.lastmovetime) > WAIT_KEY) player.body.velocity.x = player.body.velocity.y = 0;
 301
 302         }