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