added super fruit (closes #8)

Makefile

@@ -1,10 +1,12 @@
 .PHONY: all clean
 
 FIRE_ANIM = $(foreach angle, $(shell seq 0 6 359), build/fire$(angle).png)
+PEACH_DECAY_ANIM = $(foreach percent, $(shell seq 100 -1 0), build/peach-decay$(percent).png)
+PEACH_RAINBOW_ANIM = $(foreach percent, $(shell seq 100 2 299), build/peach-rainbow$(percent).png)
 
 IMAGES = $(foreach name, apple wall, public/assets/$(name)32.png)
 TILESETS = $(foreach name, hole, public/assets/$(name)-ts.png)
-ANIMATIONS = $(foreach name, fire, public/assets/$(name)-anim.png)
+ANIMATIONS = $(foreach name, fire peach-decay peach-rainbow, public/assets/$(name)-anim.png)
 JSON = $(foreach name, snake levelList config metaConfig, public/assets/$(name).json)
 ICON = public/assets/icon32.png public/assets/icon256.png public/favicon.ico
 CSS = public/css/snek.css
@@ -44,6 +46,18 @@ public/assets/fire-anim.png: $(FIRE_ANIM)
 build/fire%.png: assets/fire.png
 	convert $^ -distort ScaleRotateTranslate $(shell echo $@ | sed 's/[^0-9]*//g') -resize 32x $@
 
+public/assets/peach-decay-anim.png: $(PEACH_DECAY_ANIM)
+	convert $^ -append $@
+
+build/peach-decay%.png: assets/peach.png
+	convert $^ -modulate 100,$(shell echo $@ | sed 's/[^0-9]*//g') -resize 32x $@
+
+public/assets/peach-rainbow-anim.png: $(PEACH_RAINBOW_ANIM)
+	convert $^ -append $@
+
+build/peach-rainbow%.png: assets/peach.png
+	convert $^ -modulate 100,100,$(shell echo $@ | sed 's/[^0-9]*//g') -resize 32x $@
+
 public/assets/%.json: assets/%.json
 	cp $^ $@
 

levels/arcade-arcade.json

@@ -8,5 +8,8 @@
 		[16, 12],
 		[16, 11],
 		[16, 10]
-	]
+	],
+	"rules": {
+		"superFruitGrow": true
+	}
 }

src/js/assets.js

@@ -1,19 +1,21 @@
 const ProgressBar=require('progress');
 
 const assetSpecs=[
-	{ name: 'fruit',      filename: 'apple32.png',     type: 'image' },
-	{ name: 'wall',       filename: 'wall32.png',      type: 'image' },
-	{ name: 'hole',       filename: 'hole-ts.png',     type: 'image' },
-	{ name: 'fire',       filename: 'fire-anim.png',   type: 'image' },
-	{ name: 'snake',      filename: 'snake.json',      type: 'json'  },
-	{ name: 'levelList',  filename: 'levelList.json',  type: 'json'  },
-	{ name: 'config',     filename: 'config.json',     type: 'json'  },
-	{ name: 'metaConfig', filename: 'metaConfig.json', type: 'json'  }
+	{ name: 'fruit',      filename: 'apple32.png',            type: 'image' },
+	{ name: 'superFruit', filename: 'peach-rainbow-anim.png', type: 'image' },
+	{ name: 'wall',       filename: 'wall32.png',             type: 'image' },
+	{ name: 'hole',       filename: 'hole-ts.png',            type: 'image' },
+	{ name: 'fire',       filename: 'fire-anim.png',          type: 'image' },
+	{ name: 'snake',      filename: 'snake.json',             type: 'json'  },
+	{ name: 'levelList',  filename: 'levelList.json',         type: 'json'  },
+	{ name: 'config',     filename: 'config.json',            type: 'json'  },
+	{ name: 'metaConfig', filename: 'metaConfig.json',        type: 'json'  }
 ];
 
 const tasks=[
-	{ from: 'hole', type: 'tileset', tiles: ['base', 'ul', 'dr', 'dl', 'ur', 'l', 'r', 'd', 'u'], steps: 3 },
-	{ from: 'fire', type: 'animation', steps: 6 }
+	{ from: 'hole',       type: 'tileset',   steps: 3, tiles: ['base', 'ul', 'dr', 'dl', 'ur', 'l', 'r', 'd', 'u'] },
+	{ from: 'fire',       type: 'animation', steps: 6 },
+	{ from: 'superFruit', type: 'animation', steps: 5 }
 ];
 
 const cvs=document.createElement('canvas');

src/js/snek.js

@@ -1,4 +1,4 @@
-const [EMPTY, FOOD, WALL, FIRE, HOLE, HOLE_S, SNAKE]=Array(7).keys();
+const [EMPTY, FOOD, SUPER_FOOD, WALL, FIRE, HOLE, HOLE_S, SNAKE]=Array(7).keys();
 
 class SnekGame {
 	constructor(settings, canvas, rules) {
@@ -17,6 +17,7 @@ class SnekGame {
 						switch(settings.world[y][x]) {
 							case ' ': return EMPTY;
 							case 'f': return FOOD;
+							case 'F': return SUPER_FOOD;
 							case 'w': return WALL;
 							case 'o': return HOLE;
 							case 'i': return FIRE;
@@ -60,6 +61,9 @@ class SnekGame {
 			// add the food
 			settings.food.forEach(([x, y]) => this.world[x][y]=FOOD);
 			this.fruits=[...settings.food];
+
+			// add the super food
+			if(settings.superFood) settings.superFood.forEach(([x, y]) => this.world[x][y]=SUPER_FOOD);
 		}
 
 		// add the snake to the world
@@ -88,6 +92,7 @@ class SnekGame {
 		// load the custom rules
 		this.rules=Object.assign({
 			fruitRegrow: true,
+			superFruitGrow: false,
 			speedIncrease: true,
 			worldWrap: true,
 			winCondition: 'none',
@@ -145,6 +150,7 @@ class SnekGame {
 		const wall=assets.get('wall');
 		const hole=assets.get('hole');
 		const fire=assets.get('fire');
+		const superFruit=assets.get('superFruit');
 		const putTile=(x, y, tile) => this.ctx.drawImage(
 			tile,
 			offsetX+cellSize*x,
@@ -190,6 +196,10 @@ class SnekGame {
 						// technically, this works for all shapes
 						// however, the tileset only handles convex shapes
 					}
+
+					case SUPER_FOOD:
+						putTileAnim(x, y, superFruit);
+						break;
 				}
 			}
 		}
@@ -362,7 +372,12 @@ class SnekGame {
 				) return this.die();
 				break;
 
-			// you eat, you don't die
+			// you eat, you get a massive score boost
+			case SUPER_FOOD:
+				this.score+=10;
+				break;
+
+			// you eat, you grow
 			case FOOD:
 				// re-grow the snake
 				this.snake.push(tail);
@@ -377,9 +392,9 @@ class SnekGame {
 				// increase score
 				this.score++;
 
-				// custom rules
-				if(this.rules.fruitRegrow) {
-					const emptyCells=this.world
+				// list empty cells
+				const getEmptyCells=() =>
+					this.world
 						.map(
 							(l, x) => l
 								.map(
@@ -388,11 +403,24 @@ class SnekGame {
 									a => a
 								)
 						).flat();
+
+				// custom rules
+				if(this.rules.fruitRegrow) {
+					const emptyCells=getEmptyCells();
+
 					const cell=emptyCells[Math.floor(Math.random()*emptyCells.length)];
 					this.fruits.push(cell);
 					this.world[cell[0]][cell[1]]=FOOD;
 				}
 
+				if(this.rules.superFruitGrow) {
+					if(Math.random()<.1) { // 10% chance
+						const emptyCells=getEmptyCells();
+						const cell=emptyCells[Math.floor(Math.random()*emptyCells.length)];
+						this.world[cell[0]][cell[1]]=SUPER_FOOD;
+					}
+				}
+
 				if(this.rules.speedIncrease) {
 					this.delay*=this.rules.speedMultiplier;
 					if(this.delay<this.rules.speedCap) this.delay=this.rules.speedCap;