27 KiB
27 KiB
<html lang="uk">
<head>
<style>
body,
html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
Клавіатура
Геймпад
<script>
let controlType = "keyboard";
let bullets = [];
let explosionMarks = [];
document.querySelectorAll('input[name="controlType"]').forEach((elem) => {
elem.addEventListener("change", function (event) {
controlType = event.target.value;
});
});
const wallTexture = new Image();
wallTexture.src = "wall.png";
const obstacleTexture = new Image();
obstacleTexture.src = "obs.png";
const canvas = document.getElementById("gameCanvas");
const ctx = canvas.getContext("2d");
let canvasWidth, canvasHeight;
let tractor, leftTrail, rightTrail, obstacles, mudPattern;
function resizeCanvas() {
canvasWidth = window.innerWidth;
canvasHeight = window.innerHeight;
canvas.width = canvasWidth;
canvas.height = canvasHeight;
createMudTexture();
}
window.addEventListener("resize", resizeCanvas);
resizeCanvas();
let lastFireTime = 0;
const fireInterval = 100;
let lMut = false;
let rMut = false;
let explosions = [];
let audioContext;
let isSoundInitialized = false;
let engineOscillator;
let engineGainNode;
function initializeSound() {
if (!audioContext) {
audioContext = new (window.AudioContext ||
window.webkitAudioContext)();
isSoundInitialized = true;
initializeEngineSound();
}
}
function initializeEngineSound() {
if (!isSoundInitialized) return;
engineOscillator = audioContext.createOscillator();
engineGainNode = audioContext.createGain();
engineOscillator.type = "triangle";
engineOscillator.frequency.setValueAtTime(10, audioContext.currentTime);
engineGainNode.gain.setValueAtTime(0, audioContext.currentTime);
engineOscillator.connect(engineGainNode);
engineGainNode.connect(audioContext.destination);
engineOscillator.start();
}
function updateEngineSound() {
if (!engineOscillator) return;
const speed = Math.sqrt(
tractor.leftTrack * tractor.leftTrack +
tractor.rightTrack * tractor.rightTrack
);
const maxSpeed = tractor.speed * 2;
const minFreq = 20;
const maxFreq = 60;
const frequency = minFreq + (maxFreq - minFreq) * (speed / maxSpeed);
engineOscillator.frequency.setTargetAtTime(
frequency,
audioContext.currentTime,
0.1
);
const volume = speed / maxSpeed;
engineGainNode.gain.setTargetAtTime(
volume * 0.8,
audioContext.currentTime,
0.1
);
}
function playShootSound() {
if (!isSoundInitialized) return;
const oscillator = audioContext.createOscillator();
const gainNode = audioContext.createGain();
oscillator.type = "square";
oscillator.frequency.setValueAtTime(150, audioContext.currentTime);
oscillator.frequency.exponentialRampToValueAtTime(
0.01,
audioContext.currentTime + 0.2
);
gainNode.gain.setValueAtTime(1, audioContext.currentTime);
gainNode.gain.exponentialRampToValueAtTime(
0.01,
audioContext.currentTime + 0.2
);
oscillator.connect(gainNode);
gainNode.connect(audioContext.destination);
oscillator.start();
oscillator.stop(audioContext.currentTime + 0.1);
}
function playExplosionSound() {
if (!isSoundInitialized) return;
const oscillator = audioContext.createOscillator();
const gainNode = audioContext.createGain();
oscillator.type = "sawtooth";
oscillator.frequency.setValueAtTime(100, audioContext.currentTime);
oscillator.frequency.exponentialRampToValueAtTime(
0.01,
audioContext.currentTime + 0.5
);
gainNode.gain.setValueAtTime(1, audioContext.currentTime);
gainNode.gain.exponentialRampToValueAtTime(
0.01,
audioContext.currentTime + 0.5
);
oscillator.connect(gainNode);
gainNode.connect(audioContext.destination);
oscillator.start();
oscillator.stop(audioContext.currentTime + 0.5);
}
function stopEngineSound() {
if (engineOscillator) {
engineOscillator.stop();
engineOscillator = null;
}
}
function fireBullet() {
const currentTime = Date.now();
if (currentTime - lastFireTime < fireInterval) {
return;
}
const bulletSpeed = Math.random() * 5 + 5;
const bulletSize = 10;
bullets.push({
x: tractor.x + Math.sin(tractor.angle) * (tractor.height / 2),
y: tractor.y - Math.cos(tractor.angle) * (tractor.height / 2),
angle: tractor.angle,
speed: bulletSpeed,
size: bulletSize,
lifetime: 1000,
});
playShootSound();
lastFireTime = currentTime;
}
function updateAndDrawExplosions() {
explosions = explosions.filter((particle) => {
particle.x += particle.vx;
particle.y += particle.vy;
particle.lifetime--;
ctx.beginPath();
ctx.arc(particle.x, particle.y, particle.radius, 0, Math.PI * 2);
ctx.fillStyle = particle.color;
ctx.fill();
return particle.lifetime > 0;
});
}
function updateBullets() {
bullets = bullets.filter((bullet) => {
if (bullet.lifetime <= 0) {
createExplosion(bullet.x, bullet.y);
playExplosionSound();
return false;
}
bullet.x += Math.sin(bullet.angle) * bullet.speed;
bullet.y -= Math.cos(bullet.angle) * bullet.speed;
bullet.lifetime -= 25;
return (
bullet.x >= 0 &&
bullet.x <= canvasWidth &&
bullet.y >= 0 &&
bullet.y <= canvasHeight
);
});
}
function createExplosion(x, y) {
const particleCount = 10;
for (let i = 0; i < particleCount; i++) {
const angle = Math.random() * Math.PI * 1.2;
const speed = Math.random() * 2 + 1;
explosions.push({
x: x,
y: y,
vx: Math.cos(angle) * speed,
vy: Math.sin(angle) * speed,
radius: Math.random() * 3 + 1,
color: `hsl(${Math.random() * 60 + 15}, 100%, 50%)`,
lifetime: 10,
});
}
explosionMarks.push({
x: x,
y: y,
radius: Math.random() * 5 + 5,
color: `rgba(${Math.floor(Math.random() * 56) + 50}, ${
Math.floor(Math.random() * 56) + 50
}, ${Math.floor(Math.random() * 56) + 50}, 0.7)`,
});
}
function drawExplosionMarks() {
for (let mark of explosionMarks) {
ctx.beginPath();
ctx.arc(mark.x, mark.y, mark.radius, 0, Math.PI * 2);
ctx.fillStyle = mark.color;
ctx.fill();
}
}
function drawBullets() {
ctx.fillStyle = "#505070";
for (let bullet of bullets) {
ctx.fillRect(
bullet.x - bullet.size / 2,
bullet.y - bullet.size / 2,
bullet.size,
bullet.size
);
}
}
function createMudTexture() {
const textureCanvas = document.createElement("canvas");
textureCanvas.width = 500;
textureCanvas.height = 500;
const textureCtx = textureCanvas.getContext("2d");
textureCtx.fillStyle = "#8dff6c";
textureCtx.fillRect(0, 0, 500, 500);
for (let i = 0; i < 1000; i++) {
textureCtx.fillStyle = `rgba(${Math.random() * 20 + 20}, ${
Math.random() * 90 + 100
}, ${Math.random() * 20}, ${Math.random() * 0.5})`;
textureCtx.beginPath();
textureCtx.arc(
Math.random() * 500,
Math.random() * 500,
Math.random() * 2,
0,
Math.PI * 20
);
textureCtx.fill();
}
mudPattern = ctx.createPattern(textureCanvas, "repeat");
}
function initGame() {
tileSize = 64;
tractor = {
x: canvasWidth / 2,
y: canvasHeight / 2,
width: 60,
height: 80,
angle: 0,
leftTrack: 0,
rightTrack: 0,
speed: 1.5,
turnSpeed: 0.008,
friction: 0.92,
acceleration: 0.2,
braking: 0.4,
leftReverse: false,
rightReverse: false,
leftTrackOffset: 0,
rightTrackOffset: 0,
leftBrake: false,
rightBrake: false,
};
leftTrail = [];
explosionMarks = [];
rightTrail = [];
obstacles = [];
for (let i = 0; i < 10; i++) {
obstacles.push({
x: Math.random() * (canvasWidth - tileSize * 2 - 32) + tileSize,
y: Math.random() * (canvasHeight - tileSize * 2 - 46) + tileSize,
width: 32,
height: 46,
});
}
stopEngineSound();
initializeEngineSound();
createMudTexture();
}
initGame();
const maxTrailLength = 5000;
const trailLifetime = 50000;
const trailInterval = 4;
let frameCount = 0;
function drawTractor() {
ctx.save();
ctx.translate(tractor.x, tractor.y);
ctx.rotate(tractor.angle);
ctx.fillStyle = "#333";
ctx.fillRect(
-tractor.width / 2,
-tractor.height / 2,
tractor.width,
tractor.height
);
const trackHeight = tractor.height;
const trackWidth = 7;
const segmentHeight = 7;
ctx.globalAlpha = 0.8;
ctx.fillStyle = "#333";
for (let i = 0; i < trackHeight / segmentHeight; i++) {
const alpha = Math.max(
0.5,
1 -
Math.abs((tractor.rightTrackOffset + i * segmentHeight) % 20) / 10
);
ctx.globalAlpha = alpha;
ctx.fillRect(
-tractor.width / 2 - trackWidth,
-tractor.height / 2 + i * segmentHeight,
trackWidth,
segmentHeight - 2
);
}
ctx.fillStyle = "#333";
for (let i = 0; i < trackHeight / segmentHeight; i++) {
const alpha = Math.max(
0.5,
1 -
Math.abs((tractor.leftTrackOffset + i * segmentHeight) % 20) / 10
);
ctx.globalAlpha = alpha;
ctx.fillRect(
tractor.width / 2,
-tractor.height / 2 + i * segmentHeight,
trackWidth,
segmentHeight - 2
);
}
ctx.globalAlpha = 1;
ctx.fillStyle = "lightblue";
ctx.fillRect(
-tractor.width / 4,
-tractor.height / 4,
tractor.width / 2,
tractor.height / 2
);
ctx.beginPath();
ctx.moveTo(0, -tractor.height / 2 - 20);
ctx.lineTo(10, -tractor.height / 2 - 10);
ctx.lineTo(-10, -tractor.height / 2 - 10);
ctx.closePath();
ctx.fillStyle = "red";
ctx.fill();
ctx.restore();
}
const shadowCanvas = document.createElement("canvas");
shadowCanvas.width = 32;
shadowCanvas.height = 46;
const shadowCtx = shadowCanvas.getContext("2d");
obstacleTexture.onload = function () {
shadowCtx.drawImage(obstacleTexture, 0, 0);
};
function drawObstacles() {
const t = Date.now() * 0.002;
for (let obstacle of obstacles) {
const yOffset = Math.sin(t + obstacle.x * 0.1) * 2;
ctx.save();
ctx.shadowColor = "rgba(0, 0, 0, 0.3)";
ctx.shadowBlur = 10;
ctx.shadowOffsetX = 5;
ctx.shadowOffsetY = 5;
ctx.drawImage(
obstacleTexture,
obstacle.x,
obstacle.y - yOffset,
obstacle.width,
obstacle.height
);
ctx.restore();
}
}
function drawMud() {
ctx.fillStyle = mudPattern;
ctx.fillRect(0, 0, canvasWidth, canvasHeight);
}
function drawTrail() {
const currentTime = Date.now();
ctx.lineWidth = 10;
ctx.strokeStyle = "rgba(60, 30, 15, 0.5)";
for (let trail of [leftTrail, rightTrail]) {
ctx.beginPath();
for (let i = 0; i < trail.length; i++) {
const alpha = Math.max(
0,
1 - (currentTime - trail[i].time) / trailLifetime
);
if (alpha > 0) {
ctx.globalAlpha = alpha;
if (i === 0) {
ctx.moveTo(trail[i].x, trail[i].y);
} else {
ctx.lineTo(trail[i].x, trail[i].y);
}
}
}
ctx.stroke();
}
ctx.globalAlpha = 1;
const cutoffTime = currentTime - trailLifetime;
leftTrail = leftTrail.filter((point) => point.time > cutoffTime);
rightTrail = rightTrail.filter((point) => point.time > cutoffTime);
}
function updateTractor() {
const leftSpeed = tractor.leftTrack * (tractor.leftReverse ? -1 : 1);
const rightSpeed = tractor.rightTrack * (tractor.rightReverse ? -1 : 1);
const forwardSpeed = (leftSpeed + rightSpeed) / 2;
const turn = (rightSpeed - leftSpeed) * tractor.turnSpeed;
const newX = tractor.x + Math.sin(tractor.angle) * forwardSpeed;
const newY = tractor.y - Math.cos(tractor.angle) * forwardSpeed;
let collision = false;
for (let obstacle of obstacles) {
if (
newX - tractor.width / 2 < obstacle.x + obstacle.width &&
newX + tractor.width / 2 > obstacle.x &&
newY - tractor.height / 2 < obstacle.y + obstacle.height &&
newY + tractor.height / 2 > obstacle.y
) {
collision = true;
break;
}
}
if (!collision) {
tractor.x = newX;
tractor.y = newY;
tractor.angle += turn;
} else {
tractor.leftTrack = 0;
tractor.rightTrack = 0;
}
tractor.leftTrack *= tractor.friction;
tractor.rightTrack *= tractor.friction;
tractor.leftTrackOffset += leftSpeed;
tractor.rightTrackOffset += rightSpeed;
tractor.leftTrackOffset = tractor.leftTrackOffset % 20;
tractor.rightTrackOffset = tractor.rightTrackOffset % 20;
if (
(tractor.leftBrake === false && tractor.rightBrake === true) ||
(tractor.leftBrake === true && tractor.rightBrake === false)
) {
tractor.turnSpeed = 0.015;
} else {
tractor.turnSpeed = 0.008;
}
if (frameCount % trailInterval === 0) {
const currentTime = Date.now();
const leftTrackPos = {
x:
tractor.x +
(Math.sin(tractor.angle + Math.PI / 2) * tractor.width) / 2 +
Math.sin(tractor.angle) *
(tractor.leftReverse
? tractor.height / 2
: -tractor.height / 2),
y:
tractor.y -
(Math.cos(tractor.angle + Math.PI / 2) * tractor.width) / 2 -
Math.cos(tractor.angle) *
(tractor.leftReverse
? tractor.height / 2
: -tractor.height / 2),
time: currentTime,
};
const rightTrackPos = {
x:
tractor.x +
(Math.sin(tractor.angle - Math.PI / 2) * tractor.width) / 2 +
Math.sin(tractor.angle) *
(tractor.rightReverse
? tractor.height / 2
: -tractor.height / 2),
y:
tractor.y -
(Math.cos(tractor.angle - Math.PI / 2) * tractor.width) / 2 -
Math.cos(tractor.angle) *
(tractor.rightReverse
? tractor.height / 2
: -tractor.height / 2),
time: currentTime,
};
leftTrail.push(leftTrackPos);
rightTrail.push(rightTrackPos);
if (leftTrail.length > maxTrailLength) leftTrail.shift();
if (rightTrail.length > maxTrailLength) rightTrail.shift();
}
tractor.x = Math.max(
tractor.width / 2,
Math.min(canvasWidth - tractor.width / 2, tractor.x)
);
tractor.y = Math.max(
tractor.height / 2,
Math.min(canvasHeight - tractor.height / 2, tractor.y)
);
updateEngineSound();
}
const keys = {};
document.addEventListener("keydown", (event) => {
keys[event.key] = true;
if (event.key === "r" || event.key === "R") {
initGame();
}
if (event.key === " ") {
fireBullet();
}
});
document.addEventListener("keyup", (event) => {
keys[event.key] = false;
if (event.key === "e" || event.key === "E") {
lMut = false;
}
if (event.key === "q" || event.key === "Q") {
rMut = false;
}
});
function handleKeyboardInput() {
if (!keys["ArrowDown"]) {
tractor.leftBrake = false;
}
if (!keys["s"]) {
tractor.rightBrake = false;
}
if (keys["ArrowUp"]) {
tractor.leftBrake = false;
tractor.leftTrack = Math.min(
tractor.leftTrack + tractor.acceleration,
tractor.speed
);
} else if (keys["ArrowDown"]) {
tractor.leftBrake = true;
tractor.leftTrack = Math.max(tractor.leftTrack - tractor.braking, 0);
}
if (keys["w"]) {
tractor.rightBrake = false;
tractor.rightTrack = Math.min(
tractor.rightTrack + tractor.acceleration,
tractor.speed
);
} else if (keys["s"]) {
tractor.rightBrake = true;
tractor.rightTrack = Math.max(
tractor.rightTrack - tractor.braking,
0
);
}
if (keys["e"]) {
if (lMut == false) {
tractor.leftReverse = !tractor.leftReverse;
tractor.leftTrack = 0;
lMut = true;
}
}
if (keys["q"]) {
if (rMut == false) {
tractor.rightReverse = !tractor.rightReverse;
tractor.rightTrack = 0;
rMut = true;
}
}
}
function handleInput() {
if (controlType === "gamepad") {
handleGamepadInput();
} else {
handleKeyboardInput();
}
}
function drawStatus() {
ctx.font = "16px Arial";
ctx.fillStyle = "white";
ctx.fillText(
`Права вісь: ${
tractor.leftReverse ? "Реверс" : "Вперед"
} (${tractor.leftTrack.toFixed(2)})`,
10,
30
);
ctx.fillText(
`Ліва вісь: ${
tractor.rightReverse ? "Реверс" : "Вперед"
} (${tractor.rightTrack.toFixed(2)})`,
10,
60
);
}
function drawInstructions() {
ctx.font = "14px Arial";
ctx.fillStyle = "white";
ctx.fillText("Керування:", 10, canvasHeight - 180);
ctx.fillText("W - рух лівої гусениці", 10, canvasHeight - 160);
ctx.fillText("S - гальмування лівої гусениці", 10, canvasHeight - 140);
ctx.fillText("↑ - рух правої гусениці", 10, canvasHeight - 120);
ctx.fillText("↓ - гальмування правої гусениці", 10, canvasHeight - 100);
ctx.fillText("Q - реверс лівої гусениці", 10, canvasHeight - 80);
ctx.fillText("E - реверс правої гусениці", 10, canvasHeight - 60);
ctx.fillText("R - рестарт гри", 10, canvasHeight - 40);
ctx.fillText("Пробіл - стріляти", 10, canvasHeight - 200);
ctx.fillText(
"Джойстик: Ліва вісь - ліва гусениця, Права вісь - права гусениця",
10,
canvasHeight - 20
);
}
function drawFrame() {
const tileSize = 64;
for (let x = 0; x < canvasWidth; x += tileSize) {
ctx.drawImage(wallTexture, x, 0, tileSize, tileSize);
ctx.drawImage(
wallTexture,
x,
canvasHeight - tileSize,
tileSize,
tileSize
);
}
ctx.save();
ctx.translate(0, 0);
ctx.rotate(Math.PI / 2);
for (let y = 0; y < canvasHeight; y += tileSize) {
ctx.drawImage(wallTexture, y, -tileSize, tileSize, tileSize);
}
ctx.restore();
ctx.save();
ctx.translate(canvasWidth, 0);
ctx.rotate(Math.PI / 2);
for (let y = 0; y < canvasHeight; y += tileSize) {
ctx.drawImage(wallTexture, y, 0, tileSize, tileSize);
}
ctx.restore();
}
function limitExplosionMarks(maxMarks = 50) {
if (explosionMarks.length > maxMarks) {
explosionMarks = explosionMarks.slice(-maxMarks);
}
}
let lastTime = 0;
let fps = 0;
function gameLoop(currentTime) {
const deltaTime = currentTime - lastTime;
lastTime = currentTime;
fps = 1000 / deltaTime;
handleInput();
updateTractor();
updateBullets();
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
drawMud();
drawTrail();
drawExplosionMarks();
drawFrame();
drawObstacles();
drawTractor();
drawStatus();
drawInstructions();
drawBullets();
updateAndDrawExplosions();
ctx.font = "16px Arial";
ctx.fillStyle = "white";
ctx.fillText(`FPS: ${fps.toFixed(2)}`, 10, 90);
frameCount++;
limitExplosionMarks();
requestAnimationFrame(gameLoop);
}
let gamepad = null;
function updateGamepadState() {
const gamepads = navigator.getGamepads
? navigator.getGamepads()
: navigator.webkitGetGamepads
? navigator.webkitGetGamepads()
: [];
gamepad = gamepads[0];
}
function handleGamepadInput() {
if (!gamepad) return;
if (!gamepad.buttons[5].pressed) {
lMut = false;
}
if (!gamepad.buttons[4].pressed) {
rMut = false;
}
const leftAxisY = gamepad.axes[3];
const rightAxisY = gamepad.axes[1];
const deadzone = 0.1;
if (Math.abs(leftAxisY) > deadzone) {
if (leftAxisY < 0) {
tractor.leftTrack = Math.min(
tractor.leftTrack - leftAxisY * tractor.acceleration,
tractor.speed
);
tractor.leftBrake = false;
} else {
tractor.leftTrack = Math.max(
tractor.leftTrack - tractor.braking,
0
);
tractor.leftBrake = true;
}
} else {
//tractor.leftTrack = 0;
tractor.leftBrake = false;
}
if (Math.abs(rightAxisY) > deadzone) {
if (rightAxisY < 0) {
tractor.rightTrack = Math.min(
tractor.rightTrack - rightAxisY * tractor.acceleration,
tractor.speed
);
tractor.rightBrake = false;
} else {
tractor.rightTrack = Math.max(
tractor.rightTrack - tractor.braking,
0
);
tractor.rightBrake = true;
}
} else {
//tractor.rightTrack = 0;
tractor.rightBrake = false;
}
if (gamepad.buttons[9].pressed) {
initGame();
}
if (gamepad.buttons[5].pressed && !lMut) {
tractor.leftReverse = !tractor.leftReverse;
tractor.leftTrack = 0;
lMut = true;
}
if (gamepad.buttons[4].pressed && !rMut) {
tractor.rightReverse = !tractor.rightReverse;
tractor.rightTrack = 0;
rMut = true;
}
if (gamepad.buttons[7].pressed) {
fireBullet();
}
}
window.addEventListener("gamepadconnected", function (e) {
console.log("Gamepad connected:", e.gamepad.id);
gamepad = e.gamepad;
});
window.addEventListener("gamepaddisconnected", function (e) {
console.log("Gamepad disconnected:", e.gamepad.id);
gamepad = null;
});
requestAnimationFrame(gameLoop);
function stopEngineSound() {
if (engineOscillator) {
engineOscillator.stop();
engineOscillator = null;
}
}
document.addEventListener("click", function initAudio() {
if (!isSoundInitialized) {
initializeSound();
document.removeEventListener("click", initAudio);
}
});
setInterval(updateGamepadState, 100);
function showAudioPrompt() {
const promptDiv = document.createElement("div");
promptDiv.style.position = "absolute";
promptDiv.style.top = "50%";
promptDiv.style.left = "50%";
promptDiv.style.transform = "translate(-50%, -50%)";
promptDiv.style.background = "rgba(0, 0, 0, 0.7)";
promptDiv.style.color = "white";
promptDiv.style.fontFamily = "Arial, sans-serif";
promptDiv.style.padding = "20px";
promptDiv.style.borderRadius = "10px";
promptDiv.style.fontSize = "20px";
promptDiv.style.textAlign = "center";
promptDiv.innerHTML = "Клікніть будь-де для запуску звуку";
document.body.appendChild(promptDiv);
function removePrompt() {
document.body.removeChild(promptDiv);
document.removeEventListener("click", removePrompt);
}
document.addEventListener("click", removePrompt);
}
showAudioPrompt();
</script>
</html>