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4.8 Kamikaze attackgit add .
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@moshix
moshix committed Feb 12, 2025
1 parent b4f2265 commit 94c4e77
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Showing 3 changed files with 176 additions and 51 deletions.
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227 changes: 176 additions & 51 deletions game.js
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Original file line number Diff line number Diff line change
Expand Up @@ -75,11 +75,14 @@
// 4.6.3 limit enemy firing rate in new levels to make game more playable
// 4.6.4 make bullets a bit bigger
// 4.7 various playability improvements (no bullets while player is hit)
// 4.8 kamikaze enemies!

const VERSION = "v4.7.1"; // version showing in index.html
const VERSION = "v4.8"; // version showing in index.html


document.getElementById('version-info').textContent = VERSION;
// Kamikaze enemy settings
const KAMIKAZE_MIN_TIME = 7000; // Min time between kamikaze launches (8 seconds)
const KAMIKAZE_MAX_TIME = 13000; // Max time between kamikaze launches (15 seconds)
const KAMIKAZE_SPEED = 200; // Kamikaze movement speed (pixels per second)

const GAME_WIDTH = 1024;
const GAME_HEIGHT = 576;
Expand Down Expand Up @@ -630,6 +633,41 @@ function moveEnemies(deltaTime) {
function detectCollisions() {
// Check bullet collisions with walls
bullets.forEach((bullet, bulletIndex) => {
// Add kamikaze-bullet collision detection
if (!bullet.isEnemyBullet) {
kamikazeEnemies.forEach((kamikaze, kIndex) => {
if (bullet.x < kamikaze.x + kamikaze.width &&
bullet.x + 5 > kamikaze.x &&
bullet.y < kamikaze.y + kamikaze.height &&
bullet.y + 10 > kamikaze.y) {
// Remove bullet
bullets.splice(bulletIndex, 1);

// Increment hit counter
kamikaze.hits++;

// Check if kamikaze is destroyed
if (kamikaze.hits >= KAMIKAZE_HITS_TO_DESTROY) {
// Create explosion
createExplosion(kamikaze.x, kamikaze.y);
// Remove kamikaze and add score
kamikazeEnemies.splice(kIndex, 1);
score += 1000; // 1000 points for destroying a kamikaze

// Play kamikaze explosion sound
if (!isMuted) {
kamikazeExplosionSound.currentTime = 0;
kamikazeExplosionSound.play().catch(error => {
console.log("Error playing kamikaze explosion sound:", error);
});
}
}
return;
}
});
}

// Existing wall collision check
walls.forEach((wall, wallIndex) => {
if (bullet.x < wall.x + wall.width &&
bullet.x + 5 > wall.x &&
Expand Down Expand Up @@ -659,27 +697,51 @@ function detectCollisions() {
});
});

// missile-player collision detection near the start of the function
if (!isPlayerHit) { // Only check if player isn't already hit
// Add kamikaze-player and kamikaze-wall collision detection here
if (!isPlayerHit) {
kamikazeEnemies.forEach((kamikaze, kIndex) => {
// Check wall collisions first
let hitWall = false;
walls.forEach((wall) => {
if (kamikaze.x < wall.x + wall.width &&
kamikaze.x + kamikaze.width > wall.x &&
kamikaze.y < wall.y + wall.height &&
kamikaze.y + kamikaze.height > wall.y) {
createExplosion(kamikaze.x, kamikaze.y);
kamikazeEnemies.splice(kIndex, 1);
hitWall = true;
return;
}
});

// If didn't hit wall, check player collision
if (!hitWall &&
kamikaze.x < player.x + player.width &&
kamikaze.x + kamikaze.width > player.x &&
kamikaze.y < player.y + player.height &&
kamikaze.y + kamikaze.height > player.y) {
kamikazeEnemies.splice(kIndex, 1);
handlePlayerHit();
createExplosion(kamikaze.x, kamikaze.y);
}
});
}

// missile-player collision detection
if (!isPlayerHit) {
homingMissiles.forEach((missile, mIndex) => {
// Calculate distance between missile center and player center
const dx = (missile.x) - (player.x + player.width / 2);
const dy = (missile.y) - (player.y + player.height / 2);
const distance = Math.sqrt(dx * dx + dy * dy);

// If distance is less than combined radii, we have a collision
if (distance < (player.width / 2 + missile.width / 4)) {
homingMissiles.splice(mIndex, 1);
handlePlayerHit();

// explosion animation and sound
isPlayerHit = true;
playerHitTimer = Date.now();
player.image = playerExplosionImage;
playerExplosionSound.currentTime = 0;
playerExplosionSound.play();

// Clear all enemy bullets and missiles
bullets = bullets.filter(b => !b.isEnemyBullet);
homingMissiles = [];

Expand Down Expand Up @@ -1010,6 +1072,10 @@ function restartGame() {
homingMissiles = [];
monster = null;

// Reset kamikaze-related variables
kamikazeEnemies = [];
nextKamikazeTime = 0;

// Start the game loop
requestAnimationFrame(gameLoop);
}
Expand Down Expand Up @@ -1143,7 +1209,6 @@ function gameLoop(currentTime) {
lastTime = currentTime;
}
const deltaTime = (currentTime - lastTime) / 1000;
//const deltaTime = Math.min((currentTime - lastTime) / 1000 * 0.85, 0.1); // Multiply by 0.85 to speed up by ~15%
lastTime = currentTime;

// Clear canvas
Expand All @@ -1165,12 +1230,39 @@ function gameLoop(currentTime) {
if (!gamePaused && !gameOverFlag) {
createMonster(currentTime);
moveMonster(deltaTime);

// Add kamikaze enemy creation
if (currentTime >= nextKamikazeTime) {
const enemy = getRandomEnemy();
if (enemy) {
// Remove the chosen enemy from the enemies array
enemies = enemies.filter(e => e !== enemy);

// Convert it to a kamikaze
kamikazeEnemies.push({
x: enemy.x,
y: enemy.y,
width: enemy.width,
height: enemy.height,
angle: 0,
time: 0,
hits: 0, // Add hit counter
image: enemy.image
});

// Set next kamikaze time
nextKamikazeTime = currentTime +
Math.random() * (KAMIKAZE_MAX_TIME - KAMIKAZE_MIN_TIME) +
KAMIKAZE_MIN_TIME;
}
}
}

// Draw everything
drawPlayer();
drawEnemies();
drawMonster(); // Draw monster after enemies
drawKamikazeEnemies();
drawMonster();
drawBullets();
drawMissiles();
drawMissileExplosions();
Expand All @@ -1193,6 +1285,7 @@ function gameLoop(currentTime) {
if (player.lives > 0) {
moveBullets(deltaTime);
moveEnemies(deltaTime);
moveKamikazeEnemies(deltaTime);
moveMissiles(deltaTime);
handleEnemyShooting(currentTime);
handleMissileLaunching(currentTime);
Expand All @@ -1209,7 +1302,7 @@ function gameLoop(currentTime) {
ctx.fillStyle = "cyan";
ctx.font = "35px Arial";
ctx.textAlign = "center";
ctx.fillText("press R to restart the game", canvas.width / 2, canvas.height / 2 + 150)
ctx.fillText("press R to restart the game", canvas.width / 2, canvas.height / 2 + 150);
}

requestAnimationFrame(gameLoop);
Expand Down Expand Up @@ -1305,7 +1398,8 @@ let machineGunSound = new Audio('mgun.mp3');
let spaceKeyPressTime = 0;
const MACHINE_GUN_THRESHOLD = 500; // 0.5 seconds in milliseconds


// Add near other sound declarations at the top
let kamikazeExplosionSound = new Audio('explode_kamikaze.mp3');

let currentLevel = 1;

Expand Down Expand Up @@ -1910,42 +2004,6 @@ function updateAutoPlay() {
keys.ArrowRight = true;
}
}
} else {
// Attack mode
const target = threats.find(t => t.type === 'enemy' || t.type === 'monster');
if (target) {
const targetX = target.x;
const tolerance = 8;

if (Math.abs(playerCenter - targetX) > tolerance) {
const moveLeft = targetX < playerCenter;
const newPos = moveLeft ?
playerCenter - PLAYER_SPEED / 30 :
playerCenter + PLAYER_SPEED / 30;

// Check movement safety
const movementSafe = !isUnderBullet(newPos);

if (movementSafe) {
if (moveLeft && player.x > 0) {
keys.ArrowLeft = true;
} else if (!moveLeft && player.x < canvas.width - player.width) {
keys.ArrowRight = true;
}
}
}

// Only shoot if no wall in the way
const wallBlocking = walls.some(wall =>
target.y > wall.y &&
targetX >= wall.x &&
targetX <= wall.x + wall.width
);

if (!wallBlocking) {
keys.Space = Math.abs(playerCenter - targetX) < tolerance * 1.5;
}
}
}
}
}
Expand All @@ -1960,3 +2018,70 @@ function drawAIStatus() {
ctx.restore();
}
}

// Add these state variables near the top with other state variables (after missileImage declaration):
let nextKamikazeTime = 0;
let kamikazeEnemies = [];

// Add these functions after createEnemies function
function getRandomEnemy() {
if (enemies.length === 0) return null;
return enemies[Math.floor(Math.random() * enemies.length)];
}

function moveKamikazeEnemies(deltaTime) {
kamikazeEnemies.forEach((kamikaze, index) => {
kamikaze.time += deltaTime;

// Calculate target direction
const dx = player.x + player.width / 2 - kamikaze.x;
const dy = player.y + player.height / 2 - kamikaze.y;

// Calculate angle
kamikaze.angle = Math.atan2(dy, dx);

// Add curved trajectory like missiles
const curve = Math.sin(kamikaze.time * 2) * 100;

// Move kamikaze enemy
kamikaze.x += Math.cos(kamikaze.angle) * KAMIKAZE_SPEED * deltaTime;
kamikaze.y += Math.sin(kamikaze.angle) * KAMIKAZE_SPEED * deltaTime;
kamikaze.x += Math.cos(kamikaze.angle + Math.PI / 2) * curve * deltaTime;

// Check wall collisions
walls.forEach((wall) => {
if (kamikaze.x < wall.x + wall.width &&
kamikaze.x + kamikaze.width > wall.x &&
kamikaze.y < wall.y + wall.height &&
kamikaze.y + kamikaze.height > wall.y) {
// Create explosion at collision point
createExplosion(kamikaze.x, kamikaze.y);
kamikazeEnemies.splice(index, 1);
}
});
});

// Remove kamikaze enemies that are off screen
kamikazeEnemies = kamikazeEnemies.filter(k =>
k.y < canvas.height && k.y > 0 && k.x > 0 && k.x < canvas.width
);
}

function drawKamikazeEnemies() {
kamikazeEnemies.forEach(kamikaze => {
ctx.save();
ctx.translate(kamikaze.x + kamikaze.width / 2, kamikaze.y + kamikaze.height / 2);
ctx.rotate(kamikaze.angle + Math.PI / 2);
ctx.drawImage(
kamikaze.image,
-kamikaze.width / 2,
-kamikaze.height / 2,
kamikaze.width,
kamikaze.height
);
ctx.restore();
});
}

// Add near the top with other constants
const KAMIKAZE_HITS_TO_DESTROY = 2; // Number of hits needed to destroy a kamikaze
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