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_PROJECTILE          =    500;
  26
  27         window.addEventListener("keydown", function(e) {
  28             // Prevent default browser action for arrows and spacebar
  29             if([32, 37, 38, 39, 40].indexOf(e.keyCode) > -1) {
  30             e.preventDefault();
  31             }
  32         }, false);
  33
  34
  35         class Player extends Phaser.Text {
  36             constructor(x, y) {
  37                 super(game, x, y, "♥️", { align: 'center', fill: 'red', font: 'Ubuntu Mono', fontSize: 32, fontWeight: 'bold' });
  38                 this.anchor.setTo(0.5, 0.5);
  39                 this.maxHealth = MAX_HEALTH;
  40                 this.health = this.maxHealth;
  41                 this.love = 1;
  42                 this.lastmovetime = 0;
  43                 this.lasttime_shoot = 0;
  44                 this.lasttime_mode = 0;
  45                 this.lasttime_damage = 0;
  46                 this.speed = 150;
  47                 this.switchmode(MODE_DETERMINATION);
  48                 this.weapon = new JusticeBlaster(game, this);
  49                 this.healthBar = new HealthBar(60, game.world.height - (WALL_BORDERBOTTOM / 2));
  50             }
  51
  52             enablePhysics() {
  53                 game.physics.arcade.enable(this);
  54                 this.body.bounce.y = 0.2;
  55                 this.body.bounce.x = 0.2;
  56                 this.body.collideWorldBounds = true;
  57             }
  58
  59             overlap_determination(determination) {
  60                 determination.kill();
  61                 this.heal(2);
  62                 this.speed += 50;
  63                 this.switchmode(MODE_JUSTICE);
  64             }
  65
  66             damage(amount) {
  67                 if ((game.time.now - this.lasttime_damage) > WAIT_INVINCIBILITY)
  68                 {
  69                     super.damage(amount);
  70                     this.lasttime_damage = game.time.now;
  71                 }
  72             }
  73
  74             loveUp() {
  75                 this.love++
  76                 this.maxHealth += this.love;
  77                 this.heal(this.love);
  78             }
  79
  80             control() {
  81                 if (this.alive)
  82                 {
  83                     if (cursors.left.isDown)
  84                     {
  85                         player.body.velocity.x = -player.speed;
  86                         player.lastmovetime = game.time.now;
  87                     }
  88                     else if (cursors.right.isDown)
  89                     {
  90                         player.body.velocity.x = player.speed;
  91                         player.lastmovetime = game.time.now;
  92                     }
  93                     if (cursors.up.isDown)
  94                     {
  95                         player.body.velocity.y = -player.speed;
  96                         player.lastmovetime = game.time.now;
  97                     }
  98                     else if (cursors.down.isDown)
  99                     {
 100                         player.body.velocity.y = player.speed;
 101                         player.lastmovetime = game.time.now;
 102                     }
 103                     if ((this.mode == MODE_JUSTICE) && game.input.keyboard.isDown(Phaser.Keyboard.SPACEBAR) && ((game.time.now - this.lasttime_shoot) > WAIT_SHOOT))
 104                     {
 105                         this.shoot();
 106                     }
 107                 }
 108             }
 109
 110             switchmode(soulmode) {
 111                 switch(soulmode)
 112                 {
 113                     case MODE_DETERMINATION:
 114                         this.addColor('red', 0);
 115                         break;
 116                     case MODE_JUSTICE:
 117                         this.addColor('yellow', 0);
 118                         this.lasttime_mode = game.time.now;
 119                         break;
 120                 }
 121                 this.mode = soulmode;
 122             }
 123
 124             shoot() {
 125                 this.weapon.fire(this, 0, this.y);
 126                 this.weapon.fire(this, this.x, 0);
 127                 this.weapon.fire(this, this.x, game.world.height);
 128                 this.weapon.fire(this, game.world.width, this.y);
 129                 this.lasttime_shoot = game.time.now;
 130             }
 131
 132             update() {
 133                 super.update();
 134                 this.control();
 135                 this.healthBar.update(this.love, this.maxHealth, this.health);
 136                 game.physics.arcade.overlap(monsters, this.weapon.bullets, function(m,b) { b.overlap_monster(m); });
 137                 if ((game.time.now - this.lasttime_mode) > WAIT_SOULMODE) { this.switchmode(MODE_DETERMINATION); }
 138             }
 139         }
 140
 141         class Monster extends Phaser.Sprite {
 142             constructor(x, y) {
 143                 super(game, x, y, 'monster');
 144                 this.anchor.setTo(0.5, 0.5);
 145                 this.health = MONSTER_HEALTH;
 146                 this.nexttime_shoot = game.time.now;
 147                 this.weapon = new Phaser.Weapon(game, this);
 148                 this.weapon.x = x;
 149                 this.weapon.y = y;
 150                 this.weapon.createBullets(20, 'projectile');
 151             }
 152
 153             enablePhysics() {
 154                 game.physics.arcade.enable(this);
 155             }
 156
 157             kill() {
 158                 super.kill();
 159                 player.loveUp();
 160             }
 161
 162             overlap_player(player) {
 163                 player.damage(10);
 164                 player.switchmode(MODE_DETERMINATION);
 165             }
 166
 167             update() {
 168                 super.update();
 169                 if (this.alive && player.alive && (game.time.now > this.nexttime_shoot))
 170                 {
 171                     this.weapon.fireAtSprite(player);
 172                     this.nexttime_shoot = game.time.now + (WAIT_MONSTERSHOOT / 2) + (Math.random() * WAIT_MONSTERSHOOT);
 173                 }
 174                 game.physics.arcade.overlap(player, this.weapon.bullets, function(p,b) { p.damage(p.love); });
 175             }
 176         }
 177
 178         class Determination extends Phaser.Sprite {
 179             constructor(x, y) {
 180                 super(game, x, y, 'determination');
 181                 this.anchor.setTo(0.5, 0.5);
 182             }
 183
 184             enablePhysics() {
 185                 game.physics.arcade.enable(this);
 186             }
 187         }
 188
 189         class Justice extends Phaser.Bullet {
 190             constructor(game, x, y, key, frame) {
 191                 super(game, x, y, 'projectile');
 192                 this.anchor.setTo(0.5, 0.5);
 193             }
 194
 195             overlap_monster(entity) {
 196                 entity.damage(player.love);
 197                 this.kill();
 198             }
 199         }
 200
 201         class JusticeBlaster extends Phaser.Weapon {
 202             constructor(game, parent) {
 203                 super(game, parent);
 204                 this.bulletClass = Justice;
 205                 this.bulletSpeed = SPEED_PROJECTILE;
 206                 this.multiFire = true;
 207                 this.createBullets(100, null);
 208             }
 209         }
 210
 211         class HealthBar {
 212             constructor(x, y) {
 213                 this.mhealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 214                 this.ahealth = game.add.tileSprite(x + 10, y, 0, HB_THICKNESS, 'wall');
 215                 this.mhealth.anchor.setTo(0, 0.5);
 216                 this.ahealth.anchor.setTo(0, 0.5);
 217                 this.mhealth.tint = '0xff0000';
 218                 this.ahealth.tint = '0xffff00';
 219                 this.text_love = new Phaser.Text(game, x - 50, y + 2, null, { align: 'center', fill: 'white', font: 'Ubuntu Mono', fontSize: 16, fontWeight: 'bold' });
 220                 this.text_love.anchor.setTo(0, 0.5);
 221                 game.add.existing(this.text_love);
 222             }
 223
 224             update(love, mhealth, ahealth) {
 225                 this.mhealth.width = mhealth;
 226                 this.ahealth.width = ahealth;
 227                 this.text_love.text = "LV " + love;
 228             }
 229         }
 230
 231         function preload () {
 232
 233             game.load.image('wall', 'wall.png');
 234             game.load.image('player', 'player.png');
 235             game.load.image('monster', 'monster.png');
 236             game.load.image('determination', 'determination.png');
 237             game.load.image('projectile', 'projectile.png');
 238
 239         }
 240
 241         function create () {
 242
 243             game.world.setBounds(0, 0, 800, 600);
 244             game.stage.backgroundColor = '#000000';
 245             game.physics.startSystem(Phaser.Physics.ARCADE);
 246
 247             walls = game.add.group();
 248             walls.classType = Phaser.TileSprite;
 249             walls.enableBody = true;
 250
 251             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 252             walls.add(game.add.tileSprite(WALL_BORDER, game.world.height - WALL_THICKNESS - WALL_BORDERBOTTOM, game.world.width - (WALL_BORDER * 2), WALL_THICKNESS, 'wall'));
 253             walls.add(game.add.tileSprite(WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 254             walls.add(game.add.tileSprite(game.world.width - WALL_THICKNESS - WALL_BORDER, WALL_BORDER, WALL_THICKNESS, game.world.height - WALL_BORDER - WALL_BORDERBOTTOM, 'wall'));
 255             walls.children.forEach(function(wall) { wall.body.immovable = true; });
 256
 257             determinations = game.add.group();
 258             nexttime_determination = Math.random() * WAIT_DETERMINATION;
 259
 260             monsters = game.add.group();
 261             monsters.add(new Monster(400, 500));
 262             monsters.children.forEach(function(monster) { monster.enablePhysics(); });
 263             nexttime_monsterspawn = WAIT_MONSTERSPAWN;
 264
 265             player = new Player(game.world.width / 2, game.world.height / 2);
 266             player.enablePhysics();
 267             game.add.existing(player);
 268             game.camera.follow(player);
 269             cursors = game.input.keyboard.createCursorKeys();
 270
 271             keyboard_handler = keyPress_default;
 272
 273         }
 274
 275         function update () {
 276
 277             game.physics.arcade.collide(player, walls);
 278             game.physics.arcade.overlap(player, determinations, function(p,d) { p.overlap_determination(d); });
 279             game.physics.arcade.overlap(player, monsters, function(p,m) { m.overlap_player(p); });
 280
 281             if (game.time.now > nexttime_determination)
 282             {
 283                 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));
 284                 determination.enablePhysics();
 285                 determinations.add(determination);
 286                 nexttime_determination = game.time.now + (WAIT_DETERMINATION / 2) + (Math.random() * WAIT_DETERMINATION);
 287             }
 288
 289             if (game.time.now > nexttime_monsterspawn)
 290             {
 291                 var monster = new Monster(Math.random() * game.world.width, Math.random() * game.world.height);
 292                 monster.enablePhysics();
 293                 monsters.add(monster);
 294                 nexttime_monsterspawn = game.time.now + (WAIT_MONSTERSPAWN / player.love) + (Math.random() * WAIT_MONSTERSPAWN);
 295             }
 296
 297             if ((game.time.now - player.lastmovetime) > WAIT_KEY) player.body.velocity.x = player.body.velocity.y = 0;
 298             if (keyboard_handler) keyboard_handler();
 299
 300         }
 301
 302         function keyPress_default() {
 303
 304             // Maybe needed later.
 305
 306         }