321 lines
9.6 KiB
JavaScript
321 lines
9.6 KiB
JavaScript
//bagian tempat main ama buat generate game 2d
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var canvas = document.getElementById("game");
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var content = canvas.getContext("2d");
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const Text = document.getElementById("text");
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// const GameoverText = document.getElementById("gameover");
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const UpDead = document.getElementById("gameover-overlay");
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const ScoreMain = document.getElementById("gameover-score");
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const PlayAgain = document.getElementById("ulangi");
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const Udahan = document.getElementById("keluar");
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//settingan awal
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var grid = 24;
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var count = 0;
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var speed = 10;
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var score = 0;
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var highscore = 0;
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var ArahUlar = 0;
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var GameOverTimer = 0;
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var GameStart = false;
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var ModeH = false;
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const persiapan = document.getElementById("start");
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//generate gambar external
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var KepalaUlarImage = new Image();
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KepalaUlarImage.src = "image/KepalaHorizontalKanan.png";
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var KepalAtas = new Image();
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KepalAtas.src = "image/KepalaVertikalAtas.png";
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var KepalaBawah = new Image();
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KepalaBawah.src = "image/KepalaVertikalBawah.png";
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var KepalaKiri = new Image();
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KepalaKiri.src = "image/KepalaHorizontalKiri.png";
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var KepalaKanan = new Image();
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KepalaKanan.src = "image/KepalaHorizontalKanan.png";
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// ↑ kepala ular
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var BadanUlarImage = new Image();
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BadanUlarImage.src = "image/BadanVertikal.png";
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// ↑ badan ular
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var ApelImage = new Image();
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ApelImage.src = "image/ApelLayer.png"; // Apel
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var TembokImage = new Image();
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TembokImage.src = "image/Tembok.png"; // Tembok Batagor
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//set posisi ular dan Apel
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var Ular = { x: 528, y: 240, dx: grid, dy: 0, cells: [], maxCells: 4 };
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var Apel = { x: 0, y: 0 };
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var Tembok = [];
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UpdateScore(0);
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RandomizeApel();
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//mastiin gambar external generate dulu sebelum game start
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KepalaUlarImage.onload = function () {
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function gameLoop() {}
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};
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//ngatur biar game ga langsung jalan
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function StartingGame(menantang) {
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ModeH = menantang;
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persiapan.style.display = "none";
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if (ModeH) {
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RandomSpawnWall();
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} else {
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Tembok = [];
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}
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GameStart = true;
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}
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//buat ngatur batu spwan apa ga nanti
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document
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.getElementById("mode-normal")
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.addEventListener("click", function () {
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StartingGame(false);
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});
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document
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.getElementById("mode-tambahan")
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.addEventListener("click", function () {
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StartingGame(true);
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});
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//play again pas gameover
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function resetGame() {
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Ular.x = 528;
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Ular.y = 240;
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Ular.cells = [];
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Ular.maxCells = 4;
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Ular.dx = grid;
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Ular.dy = 0;
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Tembok = [];
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RandomizeApel();
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UpdateScore(0);
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ModeH = false;
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GameStart = false;
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}
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//ngatur tombol pas gameover kemana abis di klik
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PlayAgain.addEventListener("click", function () {
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UpDead.style.display = "none";
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resetGame();
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persiapan.style.display = "flex";
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});
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Udahan.addEventListener("click", function () {
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UpDead.style.display = "none";
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resetGame();
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});
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//gameover terus ngatur ular ke setting awal
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function gameLoop() {
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if (!GameStart) {
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requestAnimationFrame(gameLoop);
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return;
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}
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ClearCanvas();
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Movement();
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IntiGame();
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requestAnimationFrame(gameLoop);
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}
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//random spawn Apel
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function RandomizeApel() {
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var pembataslebar = Math.floor(canvas.width / grid);
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var pembatastinggi = Math.floor(canvas.height / grid);
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Apel.x = Math.floor(Math.random() * pembataslebar) * grid;
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Apel.y = Math.floor(Math.random() * pembatastinggi) * grid;
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}
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//random spawn tembok
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function RandomSpawnWall() {
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var TembokX, TembokY;
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var kosong;
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var pembataslebar = Math.floor(canvas.width / grid);
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var pembatastinggi = Math.floor(canvas.height / grid);
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//create tembok
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do {
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kosong = true;
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TembokX = Math.floor(Math.random() * pembataslebar) * grid;
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TembokY = Math.floor(Math.random() * pembatastinggi) * grid;
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//cek untuk posisi yang mau di kasih tembok ada/tidak ada ularnya
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for (var i = 0; i < Ular.cells.length; i++) {
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if (Ular.cells[i].x === TembokX && Ular.cells[i].y === TembokY) {
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kosong = false;
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break;
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}
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}
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//tidak memperbolehkan tembok spawn sama dengan apel
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if (TembokX === Apel.x && TembokY === Apel.y) {
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kosong = false;
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}
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for (var i = 0; i < Tembok.length; i++) {
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if (Tembok[i].x === TembokX && Tembok[i].y === TembokY) {
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kosong = false;
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break;
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}
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}
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} while (kosong === false);
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Tembok.push({ x: TembokX, y: TembokY });
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}
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//nambah tembok tiap score kelipatan ... berapa enaknya ya? 😁
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function PenambahanTembok() {
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if (ModeH) {
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if (Tembok.length < Math.floor(score / 2)) {
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RandomSpawnWall();
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}
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}
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}
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//set dan update score
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function UpdateScore(amount) {
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score = amount > 0 ? score + amount : 0;
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highscore = score > highscore ? score : highscore;
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Text.innerHTML =
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"Score: " +
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score +
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"<br>Highscore: " +
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highscore +
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"<br>Speed: " +
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speed;
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PenambahanTembok();
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}
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//tampilin gameover
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function GameOver() {
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GameStart = false;
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ClearCanvas();
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// TAMPILKAN POP-UP GAME OVER
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ScoreMain.innerHTML = "Score: " + score;
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UpDead.style.display = "flex";
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}
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//reset isi canvas doang
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function ClearCanvas() {
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content.clearRect(0, 0, canvas.width, canvas.height);
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}
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//bagian utama:
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//ular makan dan mati pas ketemu badannya
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function IntiGame() {
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//buat gambarnya bisa keluar
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content.drawImage(ApelImage, Apel.x, Apel.y, grid, grid);
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Tembok.forEach(function (bata) {
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content.drawImage(TembokImage, bata.x, bata.y, grid, grid);
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});
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Ular.cells.forEach(function (cell, index) {
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if (index === 0) {
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// Logika Pemilihan Gambar Kepala Ular
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var posisiKepalaImage;
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if (Ular.dx === grid) {
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// KANAN
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posisiKepalaImage = KepalaKanan;
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} else if (Ular.dx === -grid) {
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// KIRI
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posisiKepalaImage = KepalaKiri;
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} else if (Ular.dy === -grid) {
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// ATAS
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posisiKepalaImage = KepalAtas;
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} else if (Ular.dy === grid) {
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// BAWAH
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posisiKepalaImage = KepalaBawah;
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} else {
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// Default, misalnya saat game baru mulai (dx=grid, dy=0, atau default awal)
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posisiKepalaImage = KepalaKanan;
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}
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content.drawImage(posisiKepalaImage, cell.x, cell.y, grid, grid);
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} else {
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content.drawImage(BadanUlarImage, cell.x, cell.y, grid, grid);
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}
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});
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//bagian generate ular
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Ular.cells.forEach(function (cell, index) {
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if (index === 0) {
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content.drawImage(KepalaUlarImage, cell.x, cell.y, grid, grid);
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} else {
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content.drawImage(BadanUlarImage, cell.x, cell.y, grid, grid);
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}
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//buat pas ular makan Apel
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if (cell.x === Apel.x && cell.y === Apel.y) {
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Ular.maxCells += 1;
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UpdateScore(1);
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RandomizeApel();
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}
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//tabrak tembok = mati
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if (index === 0) {
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Tembok.forEach(function (bata) {
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if (cell.x === bata.x && cell.y === bata.y) {
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GameOver();
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}
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});
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}
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//buat pas ular mati kena badan sendiri
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for (var i = index + 1; i < Ular.cells.length; i++)
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if (cell.x === Ular.cells[i].x && cell.y === Ular.cells[i].y)
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GameOver();
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});
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}
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function Movement() {
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if (++count < speed) return;
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if (ArahUlar > 0) ArahUlar--;
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count = 0;
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Ular.x += Ular.dx;
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Ular.y += Ular.dy;
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if (
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Ular.x < 0 ||
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Ular.x >= canvas.width ||
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Ular.y < 0 ||
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Ular.y >= canvas.height
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)
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GameOver();
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Ular.cells.unshift({ x: Ular.x, y: Ular.y });
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if (Ular.cells.length > Ular.maxCells) Ular.cells.pop();
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}
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//input keyboard buat jalan
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function InputKeyboard() {
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document.addEventListener("keydown", function (e) {
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if (!GameStart) return;
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if (
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ArahUlar == 0 &&
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((e.code == "KeyA" && Ular.dx === 0) ||
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(e.code == "KeyD" && Ular.dx === 0))
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) {
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ArahUlar = 1;
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Ular.dx = e.code === "KeyA" ? -grid : grid;
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Ular.dy = 0;
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} else if (
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ArahUlar == 0 &&
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((e.code === "KeyW" && Ular.dy === 0) ||
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(e.code == "KeyS" && Ular.dy === 0))
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) {
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ArahUlar = 1;
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Ular.dy = e.code == "KeyW" ? -grid : grid;
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Ular.dx = 0;
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}
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if (e.code === "KeyE" || e.code == "KeyQ")
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speed =
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e.code == "KeyE" && speed > 4
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? speed - 1
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: e.code == "KeyQ" && speed < 9
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? speed + 1
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: speed;
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});
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}
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InputKeyboard();
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gameLoop(); |