329 lines
11 KiB
JavaScript
329 lines
11 KiB
JavaScript
'use strict';
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import config from '../app/config.json'; // game configuration
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import gameData from '../app/gameData.json'; // game data
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import { getMousePos, isInside } from './buttons.js';
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import { clearContext, placeImage, getCenterH, getCenterV } from './draw.js';
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import { playMusic } from './music.js';
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import { imagePreloader, checkAnswer, shuffle, restartGame } from './game.js';
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// Engine variables -------------------------------------
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const DEBUG = config.debug;
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let canvas = null; // canvas id
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let context = null; // context id
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let cW = null; // canvas with
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let cH = null; // canvas height
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let landscape_orientation = null; // canvas orientation
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let game = {}; // main game variable
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let areas = { game: {}, finish: {} };
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let images = {};
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let buttons = {};
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let music = {};
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// Init -------------------------------------------------
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window.onload = function() {
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// init canvas id and sizes
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canvas = document.getElementById('game');
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context = canvas.getContext('2d');
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cW = canvas.width;
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cH = canvas.height;
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if (DEBUG)
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console.log(`Canvas size ${cW} x ${cH}`);
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// set screen orientation by carculate canvas width & height
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if (cW >= cH) { landscape_orientation = true; }
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else { landscape_orientation = false; }
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if (DEBUG)
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console.log(landscape_orientation ? "Canvas orientation set to landscape" : "Canvas orientation set to portrait");
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let imageLogo = new Image();
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imageLogo.src = "assets/logo.png";
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images.logo = imageLogo;
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let questImages = [];
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for (const [key, value] of Object.entries(gameData.questions)) {
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questImages.push(value.image);
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}
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imagePreloader(questImages, function() { game.loadedState = true; });
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music.music = new AudioContext() || new webkitAudioContext();
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playMusic(config, music.music);
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game.loadedState = false;
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game.finish = false;
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game.currentQuest = 0;
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shuffle(gameData.questions); // shuffle quests
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shuffle(gameData.questions[game.currentQuest].answer); // shuffle first quest answers
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// присваем всем квестам статус не выполнен
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gameData.questions.forEach(element => element.status = null);
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// set areas sizes
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if (!landscape_orientation) {
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areas.game = {
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// { x: 0, y: 0, w: 0, h: 0 }
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btnAnswer: { x: 10, y: cH - 340, w: cW - 20, h: 250 },
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labelQuestion: { x: 10, y: cH - 340 - 80, w: cW - 20, h: 70 },
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btnUi: { x: 10, y: cH - 80, w: cW - 20, h: 70 },
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questProgress: { x: 10, y: 10, w: cW - 20, h: 20 },
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}
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areas.game.questImage = { x: 10, y: areas.game.questProgress.y + areas.game.questProgress.h + 10,
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w: cW - 20, h: areas.game.labelQuestion.y - areas.game.questProgress.y - (areas.game.questProgress.h * 2) };
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let progressBarHeight = cH - (getCenterV(cH, images.logo.height) + images.logo.height) > 301 ?
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getCenterV(cH, images.logo.height) + images.logo.height + 70 : cH - 70;
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areas.splash = {
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border: { x: getCenterH(cW, config.loaderWidth), y: progressBarHeight, w: config.loaderWidth, h: 20 },
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pointer: { position: 0, direction: true },
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}
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areas.finish.labelFinishGameName = { x: 10, y: 60, w: cW - 20, h: 30 };
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areas.finish.labelTotalAnswerPercent = { x: 10, y: getCenterV(cH, 80), w: cW - 20, h: 80 };
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areas.finish.labelTotalAnswerRight = { x: 10, y: areas.finish.labelTotalAnswerPercent.y - 70, w: cW - 20, h: 60 };
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areas.finish.labelTotalInfo = { x: 10, y: areas.finish.labelTotalAnswerPercent.y + areas.finish.labelTotalAnswerPercent.h + 10, w: cW - 20, h: 90 };
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}
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else {
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// TODO: add areas for landscape mode
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}
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// click by buttons?!
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canvas.addEventListener('click', function(evt) {
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let mousePos = getMousePos(canvas, evt);
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for (const [key, value] of Object.entries(buttons)) {
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if (!game.finish && key != undefined) {
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if (isInside(mousePos, value)) {
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checkAnswer(gameData.questions[game.currentQuest], value.data);
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if (game.currentQuest < gameData.questions.length - 1) {
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game.currentQuest += 1;
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}
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else game.finish = true;
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}
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}
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}
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if (game.finish && buttons.btnRestart != undefined) {
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if (isInside(mousePos, buttons.btnRestart)) {
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restartGame(game, gameData.questions);
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delete buttons.btnRestart;
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}
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}
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}, false);
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window.requestAnimationFrame(gameLoop);
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};
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// GameLoop ---------------------------------------------
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function gameLoop(timeStamp) {
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update();
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draw();
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window.requestAnimationFrame(gameLoop);
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}
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// Game update func -------------------------------------
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function update() {
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if (!game.loadedState) {
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if (areas.splash.pointer.position < areas.splash.border.w - 50 && areas.splash.pointer.direction) {
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areas.splash.pointer.position += 1;
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}
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else areas.splash.pointer.direction = false;
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if (!areas.splash.pointer.direction) {
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if (areas.splash.pointer.position <= 0)
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areas.splash.pointer.direction = true;
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areas.splash.pointer.position -= 1;
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}
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}
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if (game.loadedState && !game.finish) {
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buttons.answerButton0 = { x: getCenterH(cW, cW / 1.5), y: 0, w: cW / 1.5, h: 50, data: null };
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buttons.answerButton1 = { x: getCenterH(cW, cW / 1.5), y: 0, w: cW / 1.5, h: 50, data: null };
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buttons.answerButton2 = { x: getCenterH(cW, cW / 1.5), y: 0, w: cW / 1.5, h: 50, data: null };
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buttons.answerButton3 = { x: getCenterH(cW, cW / 1.5), y: 0, w: cW / 1.5, h: 50, data: null };
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let answerButtonsArray = [buttons.answerButton0, buttons.answerButton1,
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buttons.answerButton2, buttons.answerButton3];
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answerButtonsArray.forEach(function callback(value, index, array) {
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if (index == 0)
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array[index].y = areas.game.btnAnswer.y;
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else
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array[index].y = array[index - 1].y + value.h + 15;
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});
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// Update answer buttons label
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answerButtonsArray.forEach(function callback(value, index) {
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value.data = gameData.questions[game.currentQuest].answer[index];
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});
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}
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if (game.finish) {
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delete buttons.answerButton0;
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delete buttons.answerButton1;
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delete buttons.answerButton2;
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delete buttons.answerButton3;
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buttons.btnRestart = { x: getCenterH(cW, cW / 1.5), y: areas.finish.labelTotalInfo.y + areas.finish.labelTotalInfo.h + 20, w: cW / 1.5, h: 70, data: "Ответить на вопросы заново" };
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}
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}
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// Draw to canvas func ----------------------------------
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function draw() {
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clearContext(canvas); // clean canvas
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// render splash screen -----------------------------
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if (!game.loadedState) {
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context.drawImage(images.logo, getCenterH(cW, images.logo.width), getCenterV(cH, images.logo.height));
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context.font = "32px Yanone Kaffeesatz";
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context.textAlign = "center";
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context.fillStyle = "white";
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context.fillRect(areas.splash.pointer.position + areas.splash.border.x, areas.splash.border.y, 50, areas.splash.border.h);
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context.strokeRect(areas.splash.border.x, areas.splash.border.y,
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areas.splash.border.w, areas.splash.border.h);
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context.strokeStyle = "black";
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context.lineWidth = 2;
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context.fillStyle = "yellow";
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}
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// render game --------------------------------------
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if (!game.finish && game.loadedState) {
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// draw progress bar
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let sizeProgressItem = areas.game.questProgress.w / gameData.questions.length;
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context.strokeStyle = "black";
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for (let i = 0; i < gameData.questions.length; i++) {
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// change progress item color by status answer
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switch (gameData.questions[i].status) {
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case null:
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context.fillStyle = "gray";
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break;
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case true:
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context.fillStyle = "green";
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break;
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case false:
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context.fillStyle = "red";
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break;
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}
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context.fillRect(10 + (i * sizeProgressItem), 10, sizeProgressItem, 20);
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context.strokeRect(10 + (i * sizeProgressItem), 10, sizeProgressItem, 20);
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}
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// draw quest image
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let i = new Image();
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i.src = `assets/images/${gameData.questions[game.currentQuest].image}`;
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placeImage(canvas, areas.game.questImage, i);
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// draw question label
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context.font = "32px Yanone Kaffeesatz";
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context.textAlign = "center";
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context.fillStyle = "white";
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context.fillText(gameData.questions[game.currentQuest].question, cW / 2, areas.game.labelQuestion.y + 30);
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// draw answer buttons
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context.fillStyle = "purple";
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context.strokeStyle = "navy";
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context.lineWidth = 2;
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let answerButtonsArray = [buttons.answerButton0, buttons.answerButton1,
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buttons.answerButton2, buttons.answerButton3];
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answerButtonsArray.forEach(function(btn) {
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context.fillRect(btn.x, btn.y, btn.w, btn.h);
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context.strokeRect(btn.x, btn.y, btn.w, btn.h);
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});
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// draw answer button label
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context.font = "32px Yanone Kaffeesatz";
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context.textAlign = "center";
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context.fillStyle = "white";
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answerButtonsArray.forEach(function callback(value) {
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context.fillText(value.data, cW / 2, value.y + 35);
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});
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}
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// render result game -------------------------------
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if (game.finish) {
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// draw game name label
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context.font = "32px Yanone Kaffeesatz";
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context.textAlign = "center";
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context.fillStyle = "white";
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context.fillText(config['gameName'], cW / 2, areas.finish.labelFinishGameName.y + 25);
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// draw labelTotalAnswerRight
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let rightAnswer = 0;
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gameData.questions.forEach(element => element.status ? rightAnswer += 1 : null);
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context.font = "50px Yanone Kaffeesatz";
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context.fillText(`Вы ответили правильно на ${rightAnswer} из ${gameData.questions.length} вопросов`, cW / 2, areas.finish.labelTotalAnswerRight.y + 45);
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// draw labelTotalAnswerPercent
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let rightAnswerPercentage = Math.ceil(rightAnswer / gameData.questions.length * 100);
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context.font = "75px Yanone Kaffeesatz";
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context.fillText(`${rightAnswerPercentage}%`, cW / 2, areas.finish.labelTotalAnswerPercent.y + 65);
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// labelTotalInfo
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context.font = "50px Yanone Kaffeesatz";
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let resultInfo = null;
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for (const [key, value] of Object.entries(gameData.answerResult)) {
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if (key <= rightAnswerPercentage) {
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resultInfo = value;
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}
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}
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context.fillText(resultInfo, cW / 2, areas.finish.labelTotalInfo.y + 55);
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// draw btnRestart
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context.fillStyle = "purple";
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context.strokeStyle = "navy";
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context.fillRect(buttons.btnRestart.x, buttons.btnRestart.y, buttons.btnRestart.w, buttons.btnRestart.h);
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context.strokeRect(buttons.btnRestart.x, buttons.btnRestart.y, buttons.btnRestart.w, buttons.btnRestart.h);
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context.font = "32px Yanone Kaffeesatz";
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context.textAlign = "center";
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context.fillStyle = "white";
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context.fillText(buttons.btnRestart.data, cW / 2, buttons.btnRestart.y + 43);
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}
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// draw game areas ----------------------------------
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if (DEBUG && !game.finish && game.loadedState) {
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context.strokeStyle = "red";
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context.lineWidth = 1;
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if (landscape_orientation)
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// TODO: draw areas by landscape
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console.log('TODO: draw answer buttons area by landscape');
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else
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for (const [key, value] of Object.entries(areas.game)) {
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context.strokeRect(value.x, value.y, value.w, value.h);
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}
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}
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else if (DEBUG && game.finish) {
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context.strokeStyle = "red";
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context.lineWidth = 1;
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if (landscape_orientation)
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// TODO: draw areas by landscape
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console.log('TODO: draw answer buttons area by landscape');
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else
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for (const [key, value] of Object.entries(areas.finish)) {
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context.strokeRect(value.x, value.y, value.w, value.h);
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}
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}
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}
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