food!

example/src/App.tsx

@@ -3,7 +3,7 @@ import "@vimazing/vim-snake/game.css";
 import { useKeyBindings } from "./useKeyBindings";
 
 function App() {
-  const { containerRef, gameStatus, scoreManager, keyLog } = useGame(30, 20, useKeyBindings);
+  const { containerRef, gameStatus, scoreManager, keyLog, score } = useGame(30, 20, useKeyBindings);
 
   const formatTime = (ms: number) => {
     const seconds = Math.floor(ms / 1000);
@@ -20,6 +20,9 @@ function App() {
         <div className="px-3 py-1 bg-muted rounded">
           Time: {formatTime(scoreManager.timeValue)}
         </div>
+        <div className="px-3 py-1 bg-muted rounded">
+          Score: {score}
+        </div>
         <div className="px-3 py-1 bg-muted rounded">
           Keys: {keyLog.length}
         </div>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vimazing/vim-snake",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "Classic Snake reimagined with Vim controls — a lightweight, typed React hook library for building snake games with hjkl navigation.",
   "author": "André Padez <andre.padez@gmail.com>",
   "keywords": [

src/game.css

@@ -99,3 +99,24 @@
   border-radius: 2px 6px 6px 2px;
 }
 
+/* =========================================================
+   Food Rendering
+   ========================================================= */
+.snake-cell.food {
+  background-color: var(--chart-2, #c3e88d);
+  border-radius: 50%;
+  box-shadow: 
+    0 0 8px color-mix(in srgb, var(--chart-2, #c3e88d) 60%, transparent),
+    inset 0 0 4px color-mix(in srgb, var(--chart-2, #c3e88d) 80%, transparent);
+  position: relative;
+}
+
+.snake-cell.food::after {
+  content: "🍎";
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  font-size: 12px;
+}
+

src/useGame/useFood.ts

@@ -1,3 +1,96 @@
-export function useFood() {
+import { useState, useRef } from "react";
-  return {};
+import type { Position, SnakeBody } from "../types";
+import type { UseRendererType } from "./useRenderer";
+
+export function useFood(
+  cols: number,
+  rows: number,
+  rendererManager: UseRendererType
+) {
+  const { containerRef } = rendererManager;
+  const [foodPositions, setFoodPositions] = useState<Position[]>([]);
+  const foodPositionsRef = useRef<Position[]>([]);
+
+  const spawnFood = (snakeBody: SnakeBody, count: number = 1) => {
+    const occupiedPositions = new Set(
+      snakeBody.map((seg) => `${seg.r},${seg.c}`)
+    );
+
+    const availablePositions: Position[] = [];
+    for (let r = 0; r < rows; r++) {
+      for (let c = 0; c < cols; c++) {
+        const key = `${r},${c}`;
+        if (!occupiedPositions.has(key)) {
+          availablePositions.push({ r, c });
+        }
+      }
+    }
+
+    const newFood: Position[] = [];
+    for (let i = 0; i < count && availablePositions.length > 0; i++) {
+      const randomIndex = Math.floor(Math.random() * availablePositions.length);
+      const food = availablePositions.splice(randomIndex, 1)[0];
+      newFood.push(food);
+    }
+
+    setFoodPositions(newFood);
+    foodPositionsRef.current = newFood;
+    renderFood(newFood);
+  };
+
+  const clearFood = () => {
+    setFoodPositions([]);
+    foodPositionsRef.current = [];
+    const container = containerRef.current;
+    container?.querySelectorAll(".food").forEach((el) => {
+      el.classList.remove("food");
+    });
+  };
+
+  const renderFood = (positions: Position[]) => {
+    const container = containerRef.current;
+    if (!container) return;
+
+    container.querySelectorAll(".food").forEach((el) => {
+      el.classList.remove("food");
+    });
+
+    positions.forEach((pos) => {
+      const cell = container.querySelector(
+        `.snake-cell[data-r="${pos.r}"][data-c="${pos.c}"]`
+      );
+      if (cell) {
+        cell.classList.add("food");
+      }
+    });
+  };
+
+  const checkFoodCollision = (headPos: Position): boolean => {
+    const food = foodPositionsRef.current;
+    const collision = food.some(
+      (f) => f.r === headPos.r && f.c === headPos.c
+    );
+    return collision;
+  };
+
+  const removeFood = (pos: Position) => {
+    const newFood = foodPositionsRef.current.filter(
+      (f) => !(f.r === pos.r && f.c === pos.c)
+    );
+    setFoodPositions(newFood);
+    foodPositionsRef.current = newFood;
+    renderFood(newFood);
+  };
+
+  return {
+    foodPositions,
+    foodPositionsRef,
+    spawnFood,
+    clearFood,
+    checkFoodCollision,
+    removeFood,
+    renderFood,
+  };
 }
+
+export type UseFoodType = ReturnType<typeof useFood>;

src/useGame/useGame.ts

@@ -1,6 +1,7 @@
 import { useEffect } from "react";
 import { useRenderer } from "./useRenderer";
 import { useSnake } from "./useSnake";
+import { useFood } from "./useFood";
 import { useGameStatus } from "./useGameStatus";
 import { useKeyBindings, type UseKeyBindingsType } from "./useKeyBindings";
 import { useScore } from "../useScore";
@@ -12,8 +13,10 @@ export function useGame(cols: number, rows: number, platformHook?: unknown) {
   const snakeManager = useSnake(cols, rows, rendererManager);
   const { changeDirection } = snakeManager;
 
-  const gameManager = useGameStatus(rendererManager, snakeManager);
+  const foodManager = useFood(cols, rows, rendererManager);
-  const { gameStatus, startGame, stopGame } = gameManager;
+
+  const gameManager = useGameStatus(rendererManager, snakeManager, foodManager);
+  const { gameStatus, startGame, stopGame, score } = gameManager;
 
   useEffect(() => {
     renderBoard(cols, rows);
@@ -33,7 +36,9 @@ export function useGame(cols: number, rows: number, platformHook?: unknown) {
     gameStatus,
     startGame,
     stopGame,
+    score,
     ...snakeManager,
+    ...foodManager,
     ...keyBindings,
     scoreManager,
   };

src/useGame/useGameStatus.ts

@@ -2,32 +2,42 @@ import { useState, useEffect, useRef } from "react";
 import type { GameStatus } from "../types";
 import type { UseRendererType } from "./useRenderer";
 import type { UseSnakeType } from "./useSnake";
+import type { UseFoodType } from "./useFood";
 
-const INITIAL_SPEED = 200;
+const FRAMES_PER_SECOND = 5;
 
 export function useGameStatus(
   rendererManager: UseRendererType,
-  snakeManager: UseSnakeType
+  snakeManager: UseSnakeType,
+  foodManager: UseFoodType
 ) {
   const { containerRef } = rendererManager;
-  const { initSnake, clearSnake } = snakeManager;
+  const { initSnake, clearSnake, snakeBodyRef } = snakeManager;
+  const { spawnFood, clearFood } = foodManager;
   const [gameStatus, setGameStatus] = useState<GameStatus>("waiting");
-  const gameLoopRef = useRef<ReturnType<typeof setInterval> | null>(null);
+  const [score, setScore] = useState(0);
+  const gameLoopRef = useRef<number | null>(null);
+  const lastUpdateRef = useRef<number>(0);
   const snakeManagerRef = useRef(snakeManager);
+  const foodManagerRef = useRef(foodManager);
 
   snakeManagerRef.current = snakeManager;
+  foodManagerRef.current = foodManager;
 
   const startGame = () => {
     initSnake();
+    spawnFood(snakeBodyRef.current, 3);
+    setScore(0);
     setGameStatus("started");
   };
 
   const stopGame = () => {
     if (gameLoopRef.current) {
-      clearInterval(gameLoopRef.current);
+      cancelAnimationFrame(gameLoopRef.current);
       gameLoopRef.current = null;
     }
     clearSnake();
+    clearFood();
     setGameStatus("waiting");
     const container = containerRef.current;
     container?.querySelectorAll(".snake-head, .snake-body, .snake-tail").forEach((el) => {
@@ -39,20 +49,50 @@ export function useGameStatus(
     console.log("useGameStatus effect - gameStatus:", gameStatus);
     if (gameStatus === "started") {
       console.log("Starting game loop");
-      gameLoopRef.current = setInterval(() => {
+      
+      let shouldGrow = false;
+      const msPerFrame = 1000 / FRAMES_PER_SECOND;
+      lastUpdateRef.current = performance.now();
+
+      const gameLoop = (timestamp: number) => {
+        const elapsed = timestamp - lastUpdateRef.current;
+
+        if (elapsed >= msPerFrame) {
           console.log("Game loop tick");
-        const result = snakeManagerRef.current.moveSnake();
+          const result = snakeManagerRef.current.moveSnake(shouldGrow);
           console.log("Move result:", result);
           
+          shouldGrow = false;
+          
           if (result === "wall-collision") {
             setGameStatus("game-over");
+            return;
           }
-      }, INITIAL_SPEED);
+
+          const head = snakeManagerRef.current.snakeBodyRef.current[0];
+          if (head && foodManagerRef.current.checkFoodCollision(head)) {
+            console.log("Food eaten!");
+            foodManagerRef.current.removeFood(head);
+            shouldGrow = true;
+            setScore((prev) => prev + 1);
+            foodManagerRef.current.spawnFood(
+              snakeManagerRef.current.snakeBodyRef.current,
+              1
+            );
+          }
+
+          lastUpdateRef.current = timestamp;
+        }
+
+        gameLoopRef.current = requestAnimationFrame(gameLoop);
+      };
+
+      gameLoopRef.current = requestAnimationFrame(gameLoop);
 
       return () => {
         console.log("Cleaning up game loop");
         if (gameLoopRef.current) {
-          clearInterval(gameLoopRef.current);
+          cancelAnimationFrame(gameLoopRef.current);
           gameLoopRef.current = null;
         }
       };
@@ -62,7 +102,7 @@ export function useGameStatus(
   useEffect(() => {
     if (gameStatus === "game-over") {
       if (gameLoopRef.current) {
-        clearInterval(gameLoopRef.current);
+        cancelAnimationFrame(gameLoopRef.current);
         gameLoopRef.current = null;
       }
     }
@@ -73,6 +113,7 @@ export function useGameStatus(
     setGameStatus,
     startGame,
     stopGame,
+    score,
   };
 }
 

src/useGame/useSnake.ts

@@ -21,9 +21,6 @@ export function useSnake(
       { r: centerR, c: centerC },
       { r: centerR + 1, c: centerC },
       { r: centerR + 2, c: centerC },
-      { r: centerR + 3, c: centerC },
-      { r: centerR + 4, c: centerC },
-      { r: centerR + 5, c: centerC },
     ];
     
     setSnakeBody(initialBody);
@@ -109,7 +106,7 @@ export function useSnake(
     }
   };
 
-  const moveSnake = (): "continue" | "wall-collision" | "self-collision" => {
+  const moveSnake = (grow: boolean = false): "continue" | "wall-collision" | "self-collision" => {
     const body = snakeBodyRef.current;
     if (body.length === 0) return "continue";
 
@@ -139,7 +136,9 @@ export function useSnake(
     }
 
     const newHead = { r: newR, c: newC };
-    const newBody = [newHead, ...body.slice(0, -1)];
+    const newBody = grow 
+      ? [newHead, ...body]
+      : [newHead, ...body.slice(0, -1)];
 
     setSnakeBody(newBody);
     snakeBodyRef.current = newBody;