feat(helpers): add levels

src/gameobjects/enemy.ts

@@ -5,20 +5,13 @@ import { getChildBubble, hurtPlayer } from '.'
 import { incrementScore } from './score'
 
 export function addEnemy() {
-  const sprites = [
-    Sprite.Bubbie,
-    Sprite.Gooba,
-    Sprite.Shellie,
-    Sprite.Spiny,
-    Sprite.Pokey,
-  ]
-
   const damage = randi(1, 10)
   const hp = randi(20, 100) * gameState.enemyHealthMultiplier
   const speed = randi(100, 300) * gameState.enemySpeedMultiplier
+  const { enemySprites } = gameState
 
   const enemy = add([
-    sprite(sprites[randi(sprites.length)]),
+    sprite(enemySprites[randi(enemySprites.length)]),
     pos(outsideCoordinates()),
     anchor('center'),
     health(hp, hp),

src/helpers/gameState.ts

@@ -10,14 +10,7 @@ class GameState {
     this.enemyDamageMultiplier = 1
     this.enemyHealthMultiplier = 1
     this.enemySpeedMultiplier = 1
-
-    this.enemySprites = [
-      Sprite.Bubbie,
-      Sprite.Gooba,
-      Sprite.Shellie,
-      Sprite.Spiny,
-      Sprite.Pokey,
-    ]
+    this.enemySprites = []
   }
 }
 

src/helpers/index.ts

@@ -2,4 +2,5 @@ export * from './chance'
 export * from './coordinates'
 export * from './direction'
 export * from './gameState'
+export * from './levels'
 export * from './time'

src/helpers/levels.ts

@@ -0,0 +1,123 @@
+import { Sprite } from '../constants'
+
+const MINUTE = 60
+
+export const levels = [
+  // 0 - 0.5
+  {
+    start: 0,
+    end: 0.5 * MINUTE,
+    loop: {
+      enemy: 4,
+      drain: 10,
+    },
+    enemies: [Sprite.Shellie, Sprite.Spiny],
+    multiplier: {
+      damage: 1,
+      health: 1,
+      speed: 1,
+    },
+  },
+
+  // 0.5 - 1
+  {
+    start: 0.5 * MINUTE,
+    end: 2 * MINUTE,
+    loop: {
+      enemy: 3,
+      drain: 10,
+    },
+    enemies: [Sprite.Gooba],
+    multiplier: {
+      damage: 1,
+      health: 1,
+      speed: 1,
+    },
+  },
+
+  // 1 - 2
+  {
+    start: 1 * MINUTE,
+    end: 2 * MINUTE,
+    loop: {
+      enemy: 3,
+      drain: 10,
+    },
+    enemies: [Sprite.Gooba, Sprite.Shellie, Sprite.Spiny],
+    multiplier: {
+      damage: 1,
+      health: 1,
+      speed: 1,
+    },
+  },
+
+  // 2 - 3
+  {
+    start: 2 * MINUTE,
+    end: 3 * MINUTE,
+    loop: {
+      enemy: 3,
+      drain: 15,
+    },
+    enemies: [Sprite.Bubbie],
+    multiplier: {
+      damage: 1,
+      health: 1,
+      speed: 1,
+    },
+  },
+
+  // 3 - 4
+  {
+    start: 3 * MINUTE,
+    end: 4 * MINUTE,
+    loop: {
+      enemy: 3,
+      drain: 15,
+    },
+    enemies: [Sprite.Pokey],
+    multiplier: {
+      damage: 1.5,
+      health: 1.5,
+      speed: 1.5,
+    },
+  },
+
+  // 4 - 5
+  {
+    start: 4 * MINUTE,
+    end: 5 * MINUTE,
+    loop: {
+      enemy: 3,
+      drain: 20,
+    },
+    enemies: [Sprite.Gooba, Sprite.Bubbie, Sprite.Pokey],
+    multiplier: {
+      damage: 1.5,
+      health: 1.5,
+      speed: 1.5,
+    },
+  },
+
+  // 5 - ∞
+  {
+    start: 5 * MINUTE,
+    end: undefined,
+    loop: {
+      enemy: 1,
+      drain: 30,
+    },
+    enemies: [
+      Sprite.Bubbie,
+      Sprite.Gooba,
+      Sprite.Shellie,
+      Sprite.Spiny,
+      Sprite.Pokey,
+    ],
+    multiplier: {
+      damage: 2,
+      health: 2,
+      speed: 2,
+    },
+  },
+]

src/scenes/game.ts

@@ -7,9 +7,7 @@ import {
   addScore,
   playMusic,
 } from '../gameobjects'
-import { gameState } from '../helpers'
-
-const MINUTE = 60
+import { gameState, levels } from '../helpers'
 
 scene(Scene.Game, () => {
   gameState.init()
@@ -33,35 +31,27 @@ scene(Scene.Game, () => {
   const player = addPlayer()
   addHealth(player)
 
-  // 0-1
-  wait(0, () => {
-    const level = MINUTE
-    const enemy = 5
-    const drain = 10
-    loop(enemy, addEnemy, level / enemy, true)
-    loop(drain, addDrain, level / drain, true)
-  })
-
-  // 1-3
-  wait(MINUTE, () => {
-    gameState.enemyDamageMultiplier = 1.5
-    gameState.enemyHealthMultiplier = 1.5
-    gameState.enemySpeedMultiplier = 1.5
-
-    const level = 3 * MINUTE
-    const enemy = 3
-    const drain = 15
-    loop(enemy, addEnemy, level / enemy, true)
-    loop(drain, addDrain, level / drain, true)
-  })
-
-  // 3-∞
-  wait(3 * MINUTE, () => {
-    gameState.enemyDamageMultiplier = 2
-    gameState.enemyHealthMultiplier = 2
-    gameState.enemySpeedMultiplier = 2
-
-    loop(1, addEnemy, undefined, true)
-    loop(20, addDrain, undefined, true)
+  levels.forEach((level) => {
+    wait(level.start, () => {
+      gameState.enemyDamageMultiplier = level.multiplier.damage
+      gameState.enemyHealthMultiplier = level.multiplier.health
+      gameState.enemySpeedMultiplier = level.multiplier.speed
+      gameState.enemySprites = level.enemies
+      const duration = level.end && level.end - level.start
+
+      loop(
+        level.loop.enemy,
+        addEnemy,
+        duration && duration / level.loop.enemy,
+        true,
+      )
+
+      loop(
+        level.loop.enemy,
+        addDrain,
+        duration && duration / level.loop.drain,
+        true,
+      )
+    })
   })
 })