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Alien_Attack.js
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Alien_Attack.js
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//
/*
@title: Alien_Attack
@author: whatware
*/
const player = "p"
const laser = "l"
const crash1 = "1"
const crash2 = "2"
const enemy = "e"
const background = "b"
const laserSFX = tune`
49.83388704318937: b5^49.83388704318937 + a5^49.83388704318937 + g5^49.83388704318937 + f5^49.83388704318937 + e5^49.83388704318937,
49.83388704318937: a5^49.83388704318937 + g5^49.83388704318937 + f5^49.83388704318937 + e5^49.83388704318937 + d5^49.83388704318937,
49.83388704318937: g5^49.83388704318937 + f5^49.83388704318937 + e5^49.83388704318937 + d5^49.83388704318937 + c5^49.83388704318937,
1445.1827242524917`
const crashSFX = tune`
54.54545454545455: b5-54.54545454545455 + g5-54.54545454545455 + e5-54.54545454545455 + g4-54.54545454545455 + e4-54.54545454545455,
54.54545454545455: d4-54.54545454545455 + a4-54.54545454545455 + e5-54.54545454545455 + g5-54.54545454545455 + a5-54.54545454545455,
54.54545454545455: d4-54.54545454545455 + g4-54.54545454545455 + f4-54.54545454545455 + d5-54.54545454545455 + g5-54.54545454545455,
54.54545454545455: g5-54.54545454545455 + e5-54.54545454545455 + b4-54.54545454545455 + f4-54.54545454545455 + d4-54.54545454545455,
1527.2727272727273`
const crashSFXold = tune`
71.42857142857143: a4-71.42857142857143 + b4-71.42857142857143 + c5-71.42857142857143 + d5-71.42857142857143 + e5-71.42857142857143,
71.42857142857143: b4-71.42857142857143 + c5-71.42857142857143 + d5-71.42857142857143 + e5-71.42857142857143 + f5-71.42857142857143,
71.42857142857143: c5-71.42857142857143 + d5-71.42857142857143 + e5-71.42857142857143 + f5-71.42857142857143 + g5-71.42857142857143,
71.42857142857143: d5-71.42857142857143 + e5-71.42857142857143 + f5-71.42857142857143 + g5-71.42857142857143 + a5-71.42857142857143,
71.42857142857143: e5-71.42857142857143 + f5-71.42857142857143 + g5-71.42857142857143 + a5-71.42857142857143 + b5-71.42857142857143,
1928.5714285714287`
const levelUpSFX = tune`
90.6344410876133: c5-90.6344410876133,
90.6344410876133: e5-90.6344410876133,
90.6344410876133: g5-90.6344410876133,
90.6344410876133: e5-90.6344410876133,
90.6344410876133: c5-90.6344410876133,
2447.129909365559`
const music = tune`
250: e5-250 + b4^250 + g5^250 + e4/250,
250,
250: e5-250 + g5^250 + e4/250,
250: d5-250 + c4/250,
250: e5-250 + g5^250 + b4^250,
250: g5-250 + a4^250 + c4/250,
250: a5-250,
250: c4/250,
250: e5-250 + b4^250 + g5^250 + e4/250,
250,
250: e5-250 + g5^250 + e4/250,
250: d5-250 + b4^250 + d4/250,
250: e5-250 + a4^250 + g5^250,
250: d5-250 + b4^250 + d4/250,
250: b4-250,
250: d5-250 + a4^250 + d4/250,
250: e5-250 + b4^250 + g5^250 + e4/250,
250,
250: e5-250 + g5^250 + e4/250,
250: d5-250 + c4/250,
250: e5-250 + b4^250 + g5^250,
250: g5-250 + c4/250,
250: a5-250,
250: c4/250,
250: b5-250 + a4^250 + d4/250,
250,
250: a5-250 + a4^250 + d4/250,
250: g5-250 + b4^250 + b5^250 + e4/250,
250: e5-250 + g5^250,
250,
250: d5-250 + a4^250,
250`
playTune(music, Infinity);
setLegend(
[ player, bitmap`
................
................
.......66.......
.......33.......
.......22.......
.......22.......
.......22.......
..6....22....6..
..3...7227...3..
..77..7227..77..
..27.772277.72..
..277722227772..
..222222222222..
..233332233332..
..33..3333..33..
..3....33....3..`],
[ laser, bitmap`
.......33.......
.......66.......
.......66.......
.......66.......
.......66.......
.......66.......
.......66.......
................
................
................
................
................
................
................
................
................`],
[ crash1, bitmap`
.........9......
..99.....9.....9
.9999.999999999.
...9999999999...
..999999999699..
..999933393669..
.9999333336669..
.9993663333669..
.99396333333399.
.99936333333369.
.99933333366396.
..9996333366696.
..9999933966699.
.99999..999999..
...99..99....99.
.99...99......9.`],
[ crash2, bitmap`
..............99
..9....9........
................
.......996699...
....9..9.99999..
.9..9999993999..
..999993333.99..
..9.9963333369..
....99933333399.
..999.633333399.
.....966666699..
...9..3999999...
................
.9..............
.......99....99.
.9....99......9.`],
[ enemy, bitmap`
..55........55..
.5555......5555.
555555....555555
555555.33.555555
555555.66.555555
.55555333355555.
.55556666665555.
..555333333555..
..555666666555..
..556666666655..
..556666666655..
...5633663365...
....63366336....
....66666666....
.....666666.....
......6666......`],
[ background, bitmap`
00000000F0000000
0000000000000000
0050000000002000
0000000000000000
0000000000000000
0000F00000000050
0000000000000000
0000000000000000
0000000000020000
0000000000000000
0000000500000000
0000000000000005
0000000000000000
0000200000000000
0000000000000000
0000000000000000`]
);
setBackground(background)
setSolids([]);
let level = 0;
const levels = [
map`
...........
...........
...........
...........
...........
...........
...........
...........
.....p.....`
];
setMap(levels[level]);
// main game vars
var laserAllowed = true
var shootingSpeed = 500
var enemyDelay = 1000
var enemyAllowed = true
var enemySpeed = 300
var enemyMovingAllowed = true
var score = 0
var hiScore = 0
var playerExploded = false
function reset() {
setMap(levels[0]);
laserAllowed = true
shootingSpeed = 500
enemyDelay = 1000
enemySpeed = 300
score = 0
playerExploded = false
clearText()
}
onInput("l", () => {
});
onInput("j", () => {
reset()
});
onInput("a", () => {
if (!playerExploded) {
getFirst(player).x -= 1
}
});
onInput("d", () => {
if (!playerExploded) {
getFirst(player).x += 1
}
});
onInput("i", () => {
if (!playerExploded && laserAllowed) {
laserAllowed = false
var laserTimer = setTimeout(function(){ laserAllowed = true }, shootingSpeed)
playTune(laserSFX)
playTune(laserSFX)
playTune(laserSFX)
addSprite(getFirst(player).x, 8, laser)
}
});
function checkELCollision() {
for (var i = 0; !playerExploded && i < tilesWith(enemy, laser).length; i++) {
score++
var storex = tilesWith(enemy, laser)[i][0].x
var storey = tilesWith(enemy, laser)[i][0].y
clearTile(storex, storey)
addSprite(storex, storey, crash1)
playTune(crashSFX)
playTune(crashSFX)
// check for level up
if (score >= 0 && score % 25 == 0) {
playTune(levelUpSFX)
playTune(levelUpSFX)
playTune(levelUpSFX)
enemySpeed -= 23
if (score >= 0 && score % 25 == 0) {
enemyDelay -= 60
}
}
}
}
// main game loop every 60ms
setInterval(function() {
// draw score at center of screen
addText("SCORE " + score + " HI " + hiScore, {
x: 10 - Math.round((("SCORE " + score + " HI " + hiScore).length) / 2),
y: 0,
color: color`2`
})
// remove enemies at bottom of screen
for (var i = 0; i < getAll(enemy).length; i++) {
if (getAll(enemy)[i].y > 7) {
getAll(enemy)[i].remove()
}
}
// game over animation and reset prompt
if (playerExploded) {
clearText()
addText(" Game Over!\n\nPress J (left)\n to restart", {
x: 3,
y: 6,
color: color`3`
})
}
// remove old crashes
for (var i = 0; i < getAll(crash2).length; i++) {
getAll(crash2)[i].remove()
}
// animate crash
for (var i = 0; i < getAll(crash1).length; i++) {
getAll(crash1)[i].type = crash2
}
// move laser, remove if at top of screen
for (var i = 0; i < getAll(laser).length; i++) {
if (getAll(laser)[i].y < 1) {
getAll(laser)[i].remove()
} else {
getAll(laser)[i].y -= 1
}
}
checkELCollision()
// move all enemies toward player
if (!playerExploded && enemyMovingAllowed) {
for (var i = 0; !playerExploded && i < getAll(enemy).length; i++) {
getAll(enemy)[i].y++;
var slope = ((getFirst(player).y - getAll(enemy)[i].y) / (getFirst(player).x - getAll(enemy)[i].x))
if (Math.round(1 / slope) > 0.8) {
getAll(enemy)[i].x++;
} else if (Math.round(1 / slope) < - 0.8) {
getAll(enemy)[i].x--;
}
}
var enemyTimer = setTimeout(function(){ enemyMovingAllowed = true }, enemySpeed)
enemyMovingAllowed = false
}
// check for player/enemy crash state
if (!playerExploded && tilesWith(player, enemy).length > 0) {
playerExploded = true
var storex = tilesWith(player, enemy)[0][0].x
var storey = tilesWith(player, enemy)[0][0].y
clearTile(storex, storey)
addSprite(storex, storey, crash1)
playTune(crashSFX)
playTune(crashSFX)
playTune(crashSFX)
playTune(crashSFX)
}
checkELCollision()
// add enemy if allowed at random position
if (!playerExploded && enemyAllowed) {
addSprite(Math.round(Math.random() * 10), 0, enemy)
enemyAllowed = false
setTimeout(function(){ enemyAllowed = true }, enemyDelay)
}
// update high score
if (score > hiScore) hiScore = score;
}, 60);