adds player change support

src/level/def.js

@@ -1,5 +1,5 @@
 export const type = {
-  air: {type: 'air', hp: 0, walkable: true},
+  air: {type: 'air', hp: Infinity, walkable: true},
   grass: {type: 'grass', hp: 1, walkable: false},
 
   tree_top_left: {type: 'tree_top_left', hp: 5, walkable: true},
@@ -33,8 +33,7 @@ export const type = {
   stone_gravel: {type: 'stone_gravel', hp: 5, walkable: false},
   stone: {type: 'stone', hp: 10, walkable: false},
   bedrock: {type: 'bedrock', hp: 25, walkable: false},
-  cave: {type: 'cave', hp: 0, walkable: true},
-  player: {type: 'player', hp: 10, background: 'air'}
+  cave: {type: 'cave', hp: Infinity, walkable: true}
 }
 
 export const level = {

src/level/first-iteration.js

@@ -1,5 +1,3 @@
-import SeedRng from 'seedrandom'
-import FastSimplexNoise from 'fast-simplex-noise'
 import {type as T, level as L, probability as P} from './def'
 
 export default class BlockGen {

src/level/index.js

@@ -4,7 +4,7 @@ import FastSimplexNoise from 'fast-simplex-noise'
 import {type as T, level as L} from './def'
 import BlockGen from './first-iteration'
 import BlockExt from './second-iteration'
-import Player from './third-iteration'
+import PlayerChanges from './third-iteration'
 
 export default class Level {
   constructor (width, height, seed = 'super random seed') {
@@ -15,7 +15,14 @@ export default class Level {
     this._grid = new Array(this._h)
     this.blockGen = new BlockGen(noiseGen)
     this.blockExt = new BlockExt(noiseGen)
-    this.player = new Player(this._grid)
+    this.playerChanges = new PlayerChanges()
+  }
+
+  change (level, column, newBlock) {
+    if (newBlock.hp <= 0) {
+      newBlock = level > L.rock ? { ...T.cave } : { ...T.air }
+    }
+    this.playerChanges.apply(level, column, newBlock)
   }
 
   grid (x, y) {
@@ -23,14 +30,14 @@ export default class Level {
     return this._grid
   }
 
-  generate (x, y, w, h) {
-    for (let i = 0; i < h; i++) {
+  generate (column, y, width, height) {
+    for (let i = 0; i < height; i++) {
       const level = y + i
-      const column = x
-      const row = Array(w)
+      const row = Array(width)
       const previousRow = this._grid[i - 1] || Array()
       this.blockGen.level(level, column, row, previousRow)
       this.blockExt.level(level, column, row, previousRow)
+      this.playerChanges.level(level, column, row)
       this._grid[i] = row
     }
   }

src/level/third-iteration.js

@@ -1,8 +1,23 @@
-import {type as T} from './def'
+export default class PlayerChanges {
+  constructor () {
+    this.changes = {}
+  }
 
-export default class Player {
-  constructor (grid) {
-    this._player_changes = []
-    this._grid = grid
+  getKey (level, column) {
+    return `${column}.${level}`
+  }
+
+  apply (level, column, newBlock) {
+    const key = this.getKey(level, column)
+    this.changes[key] = newBlock
+    console.log('applied', level, column, newBlock, this.changes)
+  }
+
+  level (level, column, row) {
+    for (let i = 0; i < row.length; i++) {
+      const key = this.getKey(level - 1, column + i)
+      const change = this.changes[key]
+      if (change) row[i] = change
+    }
   }
 }