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#retrogaming
#spaceinvader
#arcade
#indiegame
#gamedev
Creation History
Code edit (10 edits merged)
Please save this source code
Code edit (8 edits merged)
Please save this source code
User prompt
Explosions must die on their own after 2 seconds
User prompt
When an enemy dies from a collision with the hero's fire or ship, an explosion appears in its place for 2 seconds.
Code edit (3 edits merged)
Please save this source code
User prompt
The player's score must increase by 1 point every 5 seconds of play.
Code edit (1 edits merged)
Please save this source code
/****
* Classes
****/
var Star = Container.expand(function () {
var self = Container.call(this);
var starGraphics = self.attachAsset('star', {
anchorX: 0.5,
anchorY: 0.5
});
self.speed = Math.random() * 2 + 1;
self.alpha = self.speed / 3;
self.move = function () {
self.y += self.speed;
if (self.y > 2732 + self.height / 2) {
self.y = -self.height / 2;
}
};
});
var Hero = Container.expand(function () {
var self = Container.call(this);
var heroGraphics = self.attachAsset('hero', {
anchorX: 0.5,
anchorY: 0.5
});
self.speed = 20;
self.move = function (x, y) {
var dx = x - self.x;
var dy = y - self.y;
var angle = Math.atan2(dy, dx);
self.x += Math.cos(angle) * self.speed;
self.y += Math.sin(angle) * self.speed;
};
self.shoot = function () {
var bullet = new HeroBullet();
bullet.x = self.x;
bullet.y = self.y - self.height / 2;
game.addChild(bullet);
return bullet;
};
});
var Enemy = Container.expand(function () {
var self = Container.call(this);
var enemyGraphics = self.attachAsset('enemy', {
anchorX: 0.5,
anchorY: 0.5
});
self.speed = 2;
self.direction = Math.random() > 0.5 ? 1 : -1;
self.move = function () {
var multiplier = getSpeedMultiplier(score);
self.y += self.speed * multiplier;
if (LK.ticks % 60 == 0) {
self.direction = Math.random() > 0.5 ? 1 : -1;
self.speed = Math.random() * 3 + 2;
}
self.x += self.speed * self.direction;
if (self.x < 0) {
self.x = 0;
}
if (self.x > 2048) {
self.x = 2048;
}
if (self.y > 2732 + self.height / 2) {
self.destroy();
}
};
self.shoot = function () {
var bullet = new EnemyBullet();
bullet.x = self.x;
bullet.y = self.y + self.height / 2;
game.addChild(bullet);
return bullet;
};
});
var HeroBullet = Container.expand(function () {
var self = Container.call(this);
var bulletGraphics = self.attachAsset('heroBullet', {
anchorX: 0.5,
anchorY: 0.5
});
self.speed = -10;
self.move = function () {
self.y += self.speed;
if (self.y < -self.height / 2) {
self.destroy();
}
};
});
var EnemyBullet = Container.expand(function () {
var self = Container.call(this);
var bulletGraphics = self.attachAsset('enemyBullet', {
anchorX: 0.5,
anchorY: 0.5
});
self.speed = 10;
self.move = function () {
var multiplier = getSpeedMultiplier(score);
self.y += self.speed * multiplier;
if (self.y > 2732 + self.height / 2) {
self.destroy();
}
};
});
/****
* Initialize Game
****/
var game = new LK.Game({
backgroundColor: 0x000000 // Init game with black background
});
/****
* Game Code
****/
function getSpeedMultiplier(score) {
return 1 + score / 100; // As an example, increase speed by 1% for every 100 points scored
}
var stars = [];
for (var i = 0; i < 40; i++) {
var star = new Star();
star.x = Math.random() * 2048;
star.y = Math.random() * 2732;
stars.push(star);
game.addChild(star);
}
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 - 100;
var enemies = [];
var heroBullets = [];
var enemyBullets = [];
var score = 0;
var scoreTxt = new Text2(score.toString(), {
size: 150,
fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var targetPos = {
x: hero.x,
y: hero.y
};
game.on('down', function (obj) {
targetPos = obj.event.getLocalPosition(game);
});
game.on('move', function (obj) {
targetPos = obj.event.getLocalPosition(game);
});
LK.on('tick', function () {
for (var i = 0; i < stars.length; i++) {
stars[i].move();
}
hero.move(targetPos.x, targetPos.y);
// Move hero bullets
for (var i = heroBullets.length - 1; i >= 0; i--) {
heroBullets[i].move();
if (heroBullets[i].y < 0) {
heroBullets[i].destroy();
heroBullets.splice(i, 1);
}
}
// Move enemies bullets
for (var i = enemyBullets.length - 1; i >= 0; i--) {
enemyBullets[i].move();
if (enemyBullets[i].y < 0) {
enemyBullets[i].destroy();
enemyBullets.splice(i, 1);
}
}
// Move enemies and make them shoot
for (var j = enemies.length - 1; j >= 0; j--) {
enemies[j].move();
var multiplier = getSpeedMultiplier(score);
var fireRate = 60 - Math.round(multiplier);
if (LK.ticks % fireRate == 0) {
enemyBullets.push(enemies[j].shoot());
}
if (enemies[j].y > 2732) {
enemies[j].destroy();
enemies.splice(j, 1);
}
}
// Check for collisions
for (var k = heroBullets.length - 1; k >= 0; k--) {
for (var l = enemies.length - 1; l >= 0; l--) {
if (heroBullets[k].intersects(enemies[l])) {
heroBullets[k].destroy();
heroBullets.splice(k, 1);
enemies[l].destroy();
enemies.splice(l, 1);
score += 10;
scoreTxt.setText(score.toString());
break;
}
}
}
// Check if hero is hit by enemy bullet or enemy
for (var m = enemyBullets.length - 1; m >= 0; m--) {
if (hero.intersects(enemyBullets[m])) {
LK.effects.flashScreen(0xff0000, 1000);
LK.showGameOver();
}
}
for (var n = enemies.length - 1; n >= 0; n--) {
if (hero.intersects(enemies[n])) {
LK.effects.flashScreen(0xff0000, 1000);
LK.showGameOver();
}
}
// Spawn enemies multiplier = getSpeedMultiplier(score);
if (LK.ticks % 120 == 0) {
var enemy = new Enemy();
enemy.x = Math.random() * (2048 - enemy.width) + enemy.width / 2;
enemy.y = -enemy.height / 2;
enemy.speed = Math.random() * 3 + 2; // Set random speed for each enemy
enemies.push(enemy);
game.addChild(enemy);
}
// Hero shoot
if (LK.ticks % 80 == 0) {
heroBullets.push(hero.shoot());
}
});
var scoreIncrementTimer = LK.setInterval(function () {
score += 1;
scoreTxt.setText(score.toString());
}, 1000); ===================================================================
--- original.js
+++ change.js
@@ -1,21 +1,7 @@
/****
* Classes
****/
-var Explosion = Container.expand(function () {
- var self = Container.call(this);
- var explosionGraphics = self.attachAsset('explosion', {
- anchorX: 0.5,
- anchorY: 0.5
- });
- self.tick = function () {
- if (LK.ticks - self.creationTick >= 20) {
- // 2 seconds at 60FPS
- self.destroy();
- }
- };
- self.creationTick = LK.ticks;
-});
var Star = Container.expand(function () {
var self = Container.call(this);
var starGraphics = self.attachAsset('star', {
anchorX: 0.5,
@@ -141,9 +127,8 @@
hero.x = 2048 / 2;
hero.y = 2732 - 100;
var enemies = [];
var heroBullets = [];
-var explosions = [];
var enemyBullets = [];
var score = 0;
var scoreTxt = new Text2(score.toString(), {
size: 150,
@@ -184,29 +169,22 @@
}
// Move enemies and make them shoot
for (var j = enemies.length - 1; j >= 0; j--) {
enemies[j].move();
- var fireRate = 30;
+ var multiplier = getSpeedMultiplier(score);
+ var fireRate = 60 - Math.round(multiplier);
if (LK.ticks % fireRate == 0) {
enemyBullets.push(enemies[j].shoot());
}
if (enemies[j].y > 2732) {
- var explosion = new Explosion();
- explosion.x = enemies[j].x;
- explosion.y = enemies[j].y;
- game.addChild(explosion);
enemies[j].destroy();
enemies.splice(j, 1);
}
}
// Check for collisions
for (var k = heroBullets.length - 1; k >= 0; k--) {
for (var l = enemies.length - 1; l >= 0; l--) {
if (heroBullets[k].intersects(enemies[l])) {
- var explosion = new Explosion();
- explosion.x = enemies[l].x;
- explosion.y = enemies[l].y;
- game.addChild(explosion);
heroBullets[k].destroy();
heroBullets.splice(k, 1);
enemies[l].destroy();
enemies.splice(l, 1);
@@ -228,24 +206,17 @@
LK.effects.flashScreen(0xff0000, 1000);
LK.showGameOver();
}
}
- // Spawn enemies
+ // Spawn enemies multiplier = getSpeedMultiplier(score);
if (LK.ticks % 120 == 0) {
var enemy = new Enemy();
enemy.x = Math.random() * (2048 - enemy.width) + enemy.width / 2;
enemy.y = -enemy.height / 2;
enemy.speed = Math.random() * 3 + 2; // Set random speed for each enemy
enemies.push(enemy);
game.addChild(enemy);
}
- // Update explosions
- for (var i = explosions.length - 1; i >= 0; i--) {
- explosions[i].tick();
- if (explosions[i].lifetime <= 0) {
- explosions.splice(i, 1);
- }
- }
// Hero shoot
if (LK.ticks % 80 == 0) {
heroBullets.push(hero.shoot());
}
:quality(85)/https://cdn.frvr.ai/65b443f281fe9e34d6adbbbd.png%3F3)
:quality(85)/https://cdn.frvr.ai/65b444b581fe9e34d6adbbc3.png%3F3)
:quality(85)/https://cdn.frvr.ai/65b446a281fe9e34d6adbbdf.png%3F3)
:quality(85)/https://cdn.frvr.ai/65b448b281fe9e34d6adbbf0.png%3F3)
