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1 : -1),\n speed: BALL_SPEED_INITIAL\n },\n playerScore: 0,\n computerScore: 0,\n isRunning: false,\n keys: {},\n difficulty: 0.85 // AI difficulty (0-1)\n };\n }\n\n private setupEventListeners(): void {\n // Keyboard event listeners\n window.addEventListener('keydown', (e) => {\n this.state.keys[e.key] = true;\n \n // Start/restart game with spacebar\n if (e.key === ' ' && !this.state.isRunning) {\n this.startGame();\n }\n });\n \n window.addEventListener('keyup', (e) => {\n this.state.keys[e.key] = false;\n });\n }\n\n private startGame(): void {\n // Reset ball position and set random direction\n this.state.ball.x = this.canvas.width / 2;\n this.state.ball.y = this.canvas.height / 2;\n this.state.ball.speed = BALL_SPEED_INITIAL;\n \n // Random X direction (towards player or computer)\n this.state.ball.velocityX = BALL_SPEED_INITIAL * (Math.random() > 0.5 ? 1 : -1);\n \n // Random Y direction (up or down)\n this.state.ball.velocityY = BALL_SPEED_INITIAL * (Math.random() > 0.5 ? 1 : -1);\n \n // Start the game\n this.state.isRunning = true;\n this.hideMessage();\n }\n\n private resetGame(): void {\n this.state = this.getInitialState();\n this.updateScoreDisplay();\n this.showMessage('Press SPACE to start');\n }\n\n private showMessage(text: string): void {\n this.gameMessage.textContent = text;\n this.gameMessage.classList.remove('hidden');\n }\n\n private hideMessage(): void {\n this.gameMessage.classList.add('hidden');\n }\n\n private updateScoreDisplay(): void {\n this.scoreDisplay.textContent = `Player: ${this.state.playerScore} | Computer: ${this.state.computerScore}`;\n }\n\n private gameLoop(): void {\n // Clear canvas\n this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);\n \n // Update game state\n if (this.state.isRunning) {\n this.update();\n }\n \n // Render game objects\n this.render();\n \n // Continue game loop\n this.animationFrameId = requestAnimationFrame(() => this.gameLoop());\n }\n\n private update(): void {\n // Move player paddle based on keyboard input\n if (this.state.keys['ArrowUp']) {\n this.state.player.y = Math.max(0, this.state.player.y - this.state.player.speed);\n }\n \n if (this.state.keys['ArrowDown']) {\n this.state.player.y = Math.min(\n this.canvas.height - this.state.player.height,\n this.state.player.y + this.state.player.speed\n );\n }\n \n // Move computer paddle (simple AI)\n this.moveComputerPaddle();\n \n // Move ball\n this.state.ball.x += this.state.ball.velocityX;\n this.state.ball.y += this.state.ball.velocityY;\n \n // Ball collision with top and bottom walls\n if (\n this.state.ball.y + this.state.ball.radius > this.canvas.height ||\n this.state.ball.y - this.state.ball.radius < 0\n ) {\n this.state.ball.velocityY = -this.state.ball.velocityY;\n \n // Add a little randomness to the bounce\n this.state.ball.velocityY += (Math.random() * 2 - 1) * 0.2;\n }\n \n // Determine which paddle to check for collision\n const paddle = this.state.ball.velocityX < 0 ? this.state.player : this.state.computer;\n \n // Check for paddle collision\n if (this.checkPaddleCollision(paddle)) {\n // Reverse ball direction\n this.state.ball.velocityX = -this.state.ball.velocityX;\n \n // Increase ball speed\n this.state.ball.speed += BALL_SPEED_INCREMENT;\n \n // Calculate new velocity based on where the ball hit the paddle\n const collisionPoint = (this.state.ball.y - (paddle.y + paddle.height / 2)) / (paddle.height / 2);\n \n // Calculate angle and set new velocities\n const angle = collisionPoint * (Math.PI / 4); // Max 45 degree angle\n const direction = this.state.ball.velocityX > 0 ? -1 : 1;\n \n this.state.ball.velocityX = direction * this.state.ball.speed * Math.cos(angle);\n this.state.ball.velocityY = this.state.ball.speed * Math.sin(angle);\n }\n \n // Check if ball goes out of bounds (scoring)\n if (this.state.ball.x + this.state.ball.radius < 0) {\n // Computer scores\n this.state.computerScore++;\n this.updateScoreDisplay();\n this.checkWinCondition();\n } else if (this.state.ball.x - this.state.ball.radius > this.canvas.width) {\n // Player scores\n this.state.playerScore++;\n this.updateScoreDisplay();\n this.checkWinCondition();\n }\n }\n\n private checkPaddleCollision(paddle: Paddle): boolean {\n return (\n this.state.ball.x + this.state.ball.radius > paddle.x &&\n this.state.ball.x - this.state.ball.radius < paddle.x + paddle.width &&\n this.state.ball.y + this.state.ball.radius > paddle.y &&\n this.state.ball.y - this.state.ball.radius < paddle.y + paddle.height\n );\n }\n\n private moveComputerPaddle(): void {\n // Simple AI: Move towards the ball with some delay based on difficulty\n const computerCenter = this.state.computer.y + this.state.computer.height / 2;\n \n // Only move if the ball is moving towards the computer\n if (this.state.ball.velocityX > 0) {\n // Predict where the ball will be\n const predictedY = this.predictBallY();\n \n // Move towards the predicted position with some randomness\n if (computerCenter < predictedY - 10) {\n this.state.computer.y += this.state.computer.speed * this.state.difficulty;\n } else if (computerCenter > predictedY + 10) {\n this.state.computer.y -= this.state.computer.speed * this.state.difficulty;\n }\n \n // Ensure paddle stays within bounds\n this.state.computer.y = Math.max(\n 0,\n Math.min(this.canvas.height - this.state.computer.height, this.state.computer.y)\n );\n }\n }\n\n private predictBallY(): number {\n // Simple prediction of where the ball will be when it reaches the computer's x position\n if (this.state.ball.velocityX <= 0) return this.canvas.height / 2;\n \n // Calculate how many steps until the ball reaches the computer's x position\n const distanceX = this.state.computer.x - this.state.ball.x;\n const steps = distanceX / this.state.ball.velocityX;\n \n // Predict y position\n let predictedY = this.state.ball.y + this.state.ball.velocityY * steps;\n \n // Account for bounces\n const bounceHeight = this.canvas.height - this.state.ball.radius;\n \n // Simplistic bounce prediction\n while (predictedY < 0 || predictedY > bounceHeight) {\n if (predictedY < 0) {\n predictedY = -predictedY;\n } else if (predictedY > bounceHeight) {\n predictedY = 2 * bounceHeight - predictedY;\n }\n }\n \n return predictedY;\n }\n\n private checkWinCondition(): void {\n if (this.state.playerScore >= MAX_SCORE) {\n this.state.isRunning = false;\n this.showMessage('You Win! Press SPACE to restart');\n } else if (this.state.computerScore >= MAX_SCORE) {\n this.state.isRunning = false;\n this.showMessage('Computer Wins! Press SPACE to restart');\n } else {\n // Continue game with a new ball\n this.state.isRunning = false;\n this.showMessage('Press SPACE to continue');\n }\n }\n\n private render(): void {\n // Set canvas styling\n this.ctx.fillStyle = '#000';\n this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);\n \n // Draw center line\n this.ctx.beginPath();\n this.ctx.setLineDash([10, 15]);\n this.ctx.moveTo(this.canvas.width / 2, 0);\n this.ctx.lineTo(this.canvas.width / 2, this.canvas.height);\n this.ctx.strokeStyle = 'rgba(255, 255, 255, 0.5)';\n this.ctx.lineWidth = 2;\n this.ctx.stroke();\n this.ctx.setLineDash([]);\n \n // Draw paddles\n this.ctx.fillStyle = '#fff';\n \n // Player paddle\n this.ctx.fillRect(\n this.state.player.x,\n this.state.player.y,\n this.state.player.width,\n this.state.player.height\n );\n \n // Computer paddle\n this.ctx.fillRect(\n this.state.computer.x,\n this.state.computer.y,\n this.state.computer.width,\n this.state.computer.height\n );\n \n // Draw ball\n this.ctx.beginPath();\n this.ctx.arc(\n this.state.ball.x,\n this.state.ball.y,\n this.state.ball.radius,\n 0,\n Math.PI * 2\n );\n this.ctx.fill();\n }\n\n // Public method to clean up resources\n public destroy(): void {\n if (this.animationFrameId) {\n cancelAnimationFrame(this.animationFrameId);\n }\n \n // Remove event listeners if needed\n window.removeEventListener('keydown', () => {});\n window.removeEventListener('keyup', () => {});\n }\n}","createdAt",["D",1744612139519],"branchVersion","branchId","8947f0ee-18f9-11f0-9f8d-569c3dd06744","id","89479072-18f9-11f0-9f8d-569c3dd06744","testproj",["D",1744612047755],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","imageUrl","a8270e74-6479-475a-8025-9b69544ee0e7","pinnedFileId","cab33b74-18f9-11f0-9d00-569c3dd06744","pinPreview",true,"pinMigrated","screenshotVersion",16,"likeCount",0,"orgId","8319defa-6e1a-46d4-ba66-2114ffd3360b","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_96":95,"_103":99},"org",{"_96":95,"_97":-5,"_98":99,"_18":53,"_100":101,"_102":24},"branch",{"_13":85,"_31":86,"_42":41,"_87":43,"_88":-5,"_89":-5,"_90":-5,"_91":-5,"_92":-5,"_93":44,"_94":95},"isOwned",23,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","yawnxyz","handle","displayName","avatar","https://images.clerk.dev/oauth_github/img_2NnaHhpxNuH1xWRIRjQNoo16TVc.jpeg","tier","pro","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_42":43,"_31":44,"_37":186,"_46":-5,"_47":24,"_48":49,"_50":49,"_51":-5,"_52":-5,"_18":53,"_54":55,"_56":57,"_58":-5,"_59":60,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":-5,"_68":-5,"_69":70,"_71":70,"_72":73,"_74":73,"_75":73,"_76":70,"_77":70,"_78":187,"_80":188,"_82":189,"_84":24},"tree",[155,159],"files",[155,156,157,158,159],"counts",{"_145":62,"_146":132,"_147":132,"_148":149,"_150":151},"contents",[126,127],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_42":138,"_31":139,"_29":140,"_131":-5,"_40":41,"_39":141,"_133":57,"_37":142,"_13":62,"_33":143,"_35":-5,"_23":24,"_136":-5,"_26":144},{"_42":128,"_31":129,"_29":130,"_131":-5,"_40":41,"_39":132,"_133":57,"_37":134,"_13":62,"_33":20,"_35":135,"_23":24,"_136":-5,"_26":137},"9d2a93be-18f9-11f0-9e72-569c3dd06744","README.md","9d2a9490-18f9-11f0-9e72-569c3dd06744","parentId",1,"latest",["D",1744612081114],"# Pong Game\n\nA classic Pong game implementation for Val Town using HTML5 Canvas and TypeScript.\n\n## How to Play\n\n- Use the **Up** and **Down** arrow keys to move your paddle (left side)\n- Try to hit the ball past the computer's paddle (right side)\n- First player to reach 10 points wins\n\n## Project Structure\n\n- `frontend/index.html` - Main HTML file\n- `frontend/index.ts` - Game initialization\n- `frontend/game.ts` - Game logic and rendering\n- `frontend/style.css` - Basic styling\n\n## Implementation Details\n\nThis game uses:\n- HTML5 Canvas for rendering\n- TypeScript for game logic\n- Keyboard controls for player input\n- Simple AI for the computer opponent\n\n## View Source\n\nThis project was created on Val Town. View the source code to see how it works!","label",[129],"a2b2275c-18f9-11f0-8e03-569c3dd06744","frontend","778bddeb-06bf-482a-b5e2-c761f1ae537c",2,["D",1744612090390],"directory",[139],"pulls","branches","forks","envVars",{"_152":62,"_154":62},"connections",{"_152":62,"_153":62},"count","unfilledCount","emptyCount",{"_42":138,"_31":139,"_29":140,"_131":-5,"_40":41,"_39":141,"_133":57,"_37":183,"_13":62,"_33":143,"_35":-5,"_23":24,"_136":-5,"_161":184,"_26":185},{"_42":179,"_31":32,"_29":30,"_131":140,"_40":41,"_39":14,"_133":24,"_37":180,"_13":62,"_33":34,"_35":36,"_23":24,"_136":-5,"_161":181,"_26":182},{"_42":172,"_31":173,"_29":174,"_131":140,"_40":41,"_39":141,"_133":24,"_37":175,"_13":62,"_33":20,"_35":176,"_23":24,"_136":-5,"_161":177,"_26":178},{"_42":164,"_31":165,"_29":166,"_131":140,"_40":41,"_39":167,"_133":57,"_37":168,"_13":62,"_33":20,"_35":169,"_23":24,"_136":-5,"_161":170,"_26":171},{"_42":128,"_31":129,"_29":130,"_131":-5,"_40":41,"_39":132,"_133":57,"_37":160,"_13":62,"_33":20,"_35":135,"_23":24,"_136":-5,"_161":162,"_26":163},["D",1744612081114],"children",[],[129],"a5088e60-18f9-11f0-b916-569c3dd06744","style.css","a5088f28-18f9-11f0-b916-569c3dd06744",3,["D",1744612094315],"/* Additional styles beyond Tailwind */\nbody {\n margin: 0;\n padding: 0;\n overflow: hidden;\n}\n\n.game-container {\n position: relative;\n}\n\ncanvas {\n background-color: #000;\n display: block;\n}\n\n/* Game message animation */\n@keyframes pulse {\n 0% { opacity: 0.7; }\n 50% { opacity: 1; }\n 100% { opacity: 0.7; }\n}\n\n#gameMessage {\n animation: pulse 1.5s infinite;\n}",[],[139,165],"a2b21f3c-18f9-11f0-8e03-569c3dd06744","index.html","a2b22018-18f9-11f0-8e03-569c3dd06744",["D",1744612090390],"\n\n\n \n \n Pong Game\n \n \n \n \n \n\n\n

Pong Game

\n \n

\n Player: 0 | Computer: 0\n

\n \n

\n Press SPACE to start\n

\n \n

Use ↑ and ↓ arrow keys to move your paddle

Press SPACE to start/restart the game

\n \n \n\n",[],[139,173],"bffa5668-18f9-11f0-8f58-569c3dd06744",["D",1744612139519],[],[139,32],["D",1744612090390],[156,157,158],[139],["D",1744612047755],{"_96":95,"_103":99},{"_96":95,"_97":-5,"_98":99,"_18":53,"_100":101,"_102":24},{"_13":85,"_31":86,"_42":41,"_87":43,"_88":-5,"_89":-5,"_90":-5,"_91":-5,"_92":-5,"_93":44,"_94":95},"ctx",{"_78":-5,"_123":223,"_224":225,"_226":227,"_228":24,"_229":24,"_230":24,"_231":57,"_232":-5,"_233":-7,"_234":-7,"_235":62,"_236":24,"_237":24,"_238":-5,"_239":24,"_240":24,"_241":24,"_242":-5},"ENV",{"_194":195,"_196":197,"_198":86,"_199":200,"_201":202,"_203":204,"_205":206,"_207":208,"_209":210,"_211":212,"_213":214,"_215":216,"_217":218,"_219":220,"_221":222},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

Diff · v4