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Added intial files for hindi translation
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6-space-game/6-end-condition/translations/.github/post-lecture-quiz.hi.md
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6-space-game/6-end-condition/translations/.github/post-lecture-quiz.hi.md
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*Complete this quiz after the lesson by checking one answer per question.*
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1. What is a good pattern to use when a game end condition has been met?
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- [ ] Display a suitable message
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- [ ] Quit the game
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- [ ] Display a suitable message, offer the player to restart, and display what key to hit for that action
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1. You should offer a restart only when the game has ended
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- [ ] true
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- [ ] false
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6-space-game/6-end-condition/translations/.github/pre-lecture-quiz.hi.md
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6-space-game/6-end-condition/translations/.github/pre-lecture-quiz.hi.md
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*A warm-up quiz about game development*
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Complete this quiz in class
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1. When is a good time to restart a game
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- [ ] when a player wins or loses
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- [ ] whenever
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2. When should a game end
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- [ ] when an enemy ship is destroyed
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- [ ] when a hero ship is destroyed
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- [ ] when points are collected
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6-space-game/6-end-condition/translations/README.hi.md
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6-space-game/6-end-condition/translations/README.hi.md
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# Build a Space Game Part 6: End and Restart
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## Pre-Lecture Quiz
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[Pre-lecture quiz](.github/pre-lecture-quiz.md)
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There are different ways to express and *end condition* in a game. It's up to you as the creator of the game to say why the game has ended. Here are some reasons, if we assume we are talking about the space game you have been building so far:
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- **`N` Enemy ships have been destroyed**: It's quite common if you divide up a game into different levels that you need to destroy `N` Enemy ships to complete a level
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- **Your ship has been destroyed**: There are definitely games where you lose the game if your ship is destroyed. Another common approach is that you have the concept of lives. Every time a your ship is destroyed it deducts a life. Once all lives have been lost then you lose the game.
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- **You've collected `N` points**: Another common end condition is for you to collect points. How you get points is up to you but it's quite common to assign points to various activities like destroying an enemy ship or maybe collect items that items *drop* when they are destroyed.
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- **Complete a level**: This might involve several conditions such as `X` enemy ships destroyed, `Y` points collected or maybe that a specific item has been collected.
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## Restarting
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If people enjoy your game they are likely to want to replay it. Once the game ends for whatever reason you should offer an alternative to restart.
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✅ Think a bit about under what conditions you find a game ends, and then how you are prompted to restart
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## What to build
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You will be adding these rules to your game:
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1. **Winning the game**. Once all enemy ships have been destroyed, you win the game. Additionally display some kind of victory message.
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1. **Restart**. Once all your lives are lost or the game is won, you should offer a way to restart the game. Remember! You will need to reinitialize the game and the previous game state should be cleared.
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## Recommended steps
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Locate the files that have been created for you in the `your-work` sub folder. It should contain the following:
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```bash
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-| assets
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-| enemyShip.png
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-| player.png
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-| laserRed.png
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-| life.png
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-| index.html
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-| app.js
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-| package.json
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```
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You start your project the `your_work` folder by typing:
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```bash
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cd your-work
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npm start
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```
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The above will start a HTTP Server on address `http://localhost:5000`. Open up a browser and input that address. Your game should be in a playable state.
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> tip: to avoid warnings in Visual Studio Code, edit the `window.onload` function to call `gameLoopId` as is (without `let`), and declare the gameLoopId at the top of the file, independently: `let gameLoopId;`
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### Add code
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1. **Track end condition**. Add code that keeps track of the number of enemies, or if the hero ship has been destroyedby adding these two functions:
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```javascript
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function isHeroDead() {
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return hero.life <= 0;
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}
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function isEnemiesDead() {
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const enemies = gameObjects.filter((go) => go.type === "Enemy" && !go.dead);
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return enemies.length === 0;
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}
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```
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1. **Add logic to message handlers**. Edit the `eventEmitter` to handle these conditions:
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```javascript
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eventEmitter.on(Messages.COLLISION_ENEMY_LASER, (_, { first, second }) => {
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first.dead = true;
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second.dead = true;
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hero.incrementPoints();
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if (isEnemiesDead()) {
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eventEmitter.emit(Messages.GAME_END_WIN);
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}
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});
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eventEmitter.on(Messages.COLLISION_ENEMY_HERO, (_, { enemy }) => {
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enemy.dead = true;
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hero.decrementLife();
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if (isHeroDead()) {
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eventEmitter.emit(Messages.GAME_END_LOSS);
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return; // loss before victory
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}
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if (isEnemiesDead()) {
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eventEmitter.emit(Messages.GAME_END_WIN);
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}
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});
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eventEmitter.on(Messages.GAME_END_WIN, () => {
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endGame(true);
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});
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eventEmitter.on(Messages.GAME_END_LOSS, () => {
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endGame(false);
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});
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```
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1. **Add new message types**. Add these Messages to the constants object:
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```javascript
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GAME_END_LOSS: "GAME_END_LOSS",
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GAME_END_WIN: "GAME_END_WIN",
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```
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2. **Add restart code** code that restarts the game at the press of a selected button.
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1. **Listen to key press `Enter`**. Edit your window's eventListener to listen for this press:
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```javascript
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else if(evt.key === "Enter") {
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eventEmitter.emit(Messages.KEY_EVENT_ENTER);
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}
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```
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1. **Add restart message**. Add this Message to your Messages constant:
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```javascript
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KEY_EVENT_ENTER: "KEY_EVENT_ENTER",
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```
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1. **Implement game rules**. Implement the following game rules:
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1. **Player win condition**. When all enemy ships are destroyed, display a victory message.
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1. First, create a `displayMessage()` function:
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```javascript
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function displayMessage(message, color = "red") {
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ctx.font = "30px Arial";
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ctx.fillStyle = color;
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ctx.textAlign = "center";
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ctx.fillText(message, canvas.width / 2, canvas.height / 2);
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}
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```
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1. Create an `endGame()` function:
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```javascript
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function endGame(win) {
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clearInterval(gameLoopId);
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// set a delay so we are sure any paints have finished
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setTimeout(() => {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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ctx.fillStyle = "black";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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if (win) {
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displayMessage(
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"Victory!!! Pew Pew... - Press [Enter] to start a new game Captain Pew Pew",
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"green"
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);
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} else {
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displayMessage(
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"You died !!! Press [Enter] to start a new game Captain Pew Pew"
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);
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}
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}, 200)
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}
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```
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1. **Restart logic**. When all lives are lost or the player won the game, display that the game can be restarted. Additionally restart the game when the *restart* key is hit (you can decide what key should be mapped to restart).
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1. Create the `resetGame()` function:
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```javascript
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function resetGame() {
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if (gameLoopId) {
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clearInterval(gameLoopId);
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eventEmitter.clear();
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initGame();
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gameLoopId = setInterval(() => {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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ctx.fillStyle = "black";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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drawPoints();
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drawLife();
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updateGameObjects();
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drawGameObjects(ctx);
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}, 100);
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}
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}
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```
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1. Add a call to the `eventEmitter` to reset the game in `initGame()`:
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```javascript
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eventEmitter.on(Messages.KEY_EVENT_ENTER, () => {
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resetGame();
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});
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```
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1. Add a `clear()` function to the EventEmitter:
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```javascript
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clear() {
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this.listeners = {};
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}
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```
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👽 💥 🚀 Congratulations, Captain! Your game is complete! Well done! 🚀 💥 👽
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---
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## 🚀 Challenge
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Add a sound! Can you add a sound to enhance your game play, maybe when there's a laser hit, or the hero dies or wins? Have a look at this [sandbox](https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_audio_play) to learn how to play sound using JavaScript
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## Post-Lecture Quiz
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[Post-lecture quiz](.github/post-lecture-quiz.md)
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## Review & Self Study
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Your assignment is to create a fresh sample game, so explore some of the interesting games out there to see what type of game you might build.
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## Assignment
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[Build a Sample Game](assignment.md)
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6-space-game/6-end-condition/translations/assignment.hi.md
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6-space-game/6-end-condition/translations/assignment.hi.md
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# Build a Sample Game
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## Instructions
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Try building a small game where you practice on different end conditions. Vary between getting a number of points, the hero loses all lives or all monsters are defeated. Build something simple like a console based adventure game. Use the below game flow as inspiration:
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```
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Hero> Strikes with broadsword - orc takes 3p damage
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Orc> Hits with club - hero takes 2p damage
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Hero> Kicks - orc takes 1p damage
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Game> Orc is defeated - Hero collects 2 coins
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Game> ****No more monsters, you have conquered the evil fortress****
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```
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## Rubric
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| Criteria | Exemplary | Adequate | Needs Improvement |
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| -------- | ---------------------- | --------------------------- | -------------------------- |
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| | full game is presented | game is partially presented | partial game contains bugs |
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