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Merge pull request #233 from nanochess/main

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Ported LEM and LUNAR to Javascript
This commit is contained in:
Jeff Atwood
2021-03-13 16:12:21 -08:00
committed by GitHub
parent 7dbf0133ec e8ebdb3b84
commit 28615b9067
4 changed files with 535 additions and 0 deletions
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9
59 Lunar LEM Rocket/javascript/lem.html Normal file
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<html>
<head>
<title>LEM</title>
</head>
<body>
<pre id="output" style="font-size: 12pt;"></pre>
<script src="lem.js"></script>
</body>
</html>

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59 Lunar LEM Rocket/javascript/lem.js Normal file
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// LEM
//
// Converted from BASIC to Javascript by Oscar Toledo G. (nanochess)
//
function print(str)
{
document.getElementById("output").appendChild(document.createTextNode(str));
}
function input()
{
var input_element;
var input_str;
return new Promise(function (resolve) {
input_element = document.createElement("INPUT");
print("? ");
input_element.setAttribute("type", "text");
input_element.setAttribute("length", "50");
document.getElementById("output").appendChild(input_element);
input_element.focus();
input_str = undefined;
input_element.addEventListener("keydown", function (event) {
if (event.keyCode == 13) {
input_str = input_element.value;
document.getElementById("output").removeChild(input_element);
print(input_str);
print("\n");
resolve(input_str);
}
});
});
}
function tab(space)
{
var str = "";
while (space-- > 0)
str += " ";
return str;
}
// Main program
async function main()
{
print(tab(34) + "LEM\n");
print(tab(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY\n");
// ROCKT2 is an interactive game that simulates a lunar
// landing is similar to that of the Apollo program.
// There is absolutely no chance involved
zs = "GO";
b1 = 1;
while (1) {
m = 17.95;
f1 = 5.25;
n = 7.5;
r0 = 926;
v0 = 1.29;
t = 0;
h0 = 60;
r = r0 + h0;
a = -3,425;
r1 = 0;
a1 = 8.84361e-4;
r3 = 0;
a3 = 0;
m1 = 7.45;
m0 = m1;
b = 750;
t1 = 0;
f = 0;
p = 0;
n = 1;
m2 = 0;
s = 0;
c = 0;
if (zs == "YES") {
print("\n");
print("OK, DO YOU WANT THE COMPLETE INSTRUCTIONS OR THE INPUT -\n");
print("OUTPUT STATEMENTS?\n");
while (1) {
print("1=COMPLETE INSTRUCTIONS\n");
print("2=INPUT-OUTPUT STATEMENTS\n");
print("3=NEITHER\n");
b1 = parseInt(await input());
qs = "NO";
if (b1 == 1)
break;
qs = "YES";
if (b1 == 2 || b1 == 3)
break;
}
} else {
print("\n");
print("LUNAR LANDING SIMULATION\n");
print("\n");
print("HAVE YOU FLOWN AN APOLLO/LEM MISSION BEFORE");
while (1) {
print(" (YES OR NO)");
qs = await input();
if (qs == "YES" || qs == "NO")
break;
print("JUST ANSWER THE QUESTION, PLEASE, ");
}
}
if (qs == "YES") {
print("\n");
print("INPUT MEASUREMENT OPTION NUMBER");
} else {
print("\n");
print("WHICH SYSTEM OF MEASUREMENT DO YOU PREFER?\n");
print(" 1=METRIC 0=ENGLISH\n");
print("ENTER THE APPROPIATE NUMBER");
}
while (1) {
k = parseInt(await input());
if (k == 0 || k == 1)
break;
print("ENTER THE APPROPIATE NUMBER");
}
if (k == 1) {
z = 1852.8;
ms = "METERS";
g3 = 3.6;
ns = " KILOMETERS";
g5 = 1000;
} else {
z = 6080;
ms = "FEET";
g3 = 0.592;
ns = "N.MILES";
g5 = z;
}
if (b1 != 3) {
if (qs != "YES") {
print("\n");
print(" YOU ARE ON A LUNAR LANDING MISSION. AS THE PILOT OF\n");
print("THE LUNAR EXCURSION MODULE, YOU WILL BE EXPECTED TO\n");
print("GIVE CERTAIN COMMANDS TO THE MODULE NAVIGATION SYSTEM.\n");
print("THE ON-BOARD COMPUTER WILL GIVE A RUNNING ACCOUNT\n");
print("OF INFORMATION NEEDED TO NAVIGATE THE SHIP.\n");
print("\n");
print("\n");
print("THE ATTITUDE ANGLE CALLED FOR IS DESCRIBED AS FOLLOWS.\n");
print("+ OR -180 DEGREES IS DIRECTLY AWAY FROM THE MOON\n");
print("-90 DEGREES IS ON A TANGENT IN THE DIRECTION OF ORBIT\n");
print("+90 DEGREES IS ON A TANGENT FROM THE DIRECTION OF ORBIT\n");
print("0 (ZERO) DEGREES IS DIRECTLY TOWARD THE MOON\n");
print("\n");
print(tab(30) + "-180|+180\n");
print(tab(34) + "^\n");
print(tab(27) + "-90 < -+- > +90\n");
print(tab(34) + "!\n");
print(tab(34) + "0\n");
print(tab(21) + "<<<< DIRECTION OF ORBIT <<<<\n");
print("\n");
print(tab(20) + "------ SURFACE OF MOON ------\n");
print("\n");
print("\n");
print("ALL ANGLES BETWEEN -180 AND +180 DEGREES ARE ACCEPTED.\n");
print("\n");
print("1 FUEL UNIT = 1 SEC. AT MAX THRUST\n");
print("ANY DISCREPANCIES ARE ACCOUNTED FOR IN THE USE OF FUEL\n");
print("FOR AN ATTITUDE CHANGE.\n");
print("AVAILABLE ENGINE POWER: 0 (ZERO) AND ANY VALUE BETWEEN\n");
print("10 AND 100 PERCENT.\n");
print("\n");
print("NEGATIVE THRUST OR TIME IS PROHIBITED.\n");
print("\n");
}
print("\n");
print("INPUT: TIME INTERVAL IN SECONDS ------ (T)\n");
print(" PERCENTAGE OF THRUST ---------- (P)\n");
print(" ATTITUDE ANGLE IN DEGREES ----- (A)\n");
print("\n");
if (qs != "YES") {
print("FOR EXAMPLE:\n");
print("T,P,A? 10,65,-60\n");
print("TO ABORT THE MISSION AT ANY TIME, ENTER 0,0,0\n");
print("\n");
}
print("OUTPUT: TOTAL TIME IN ELAPSED SECONDS\n");
print(" HEIGHT IN " + ms + "\n");
print(" DISTANCE FROM LANDING SITE IN " + ms + "\n");
print(" VERTICAL VELOCITY IN " + ms + "/SECOND\n");
print(" HORIZONTAL VELOCITY IN " + ms + "/SECOND\n");
print(" FUEL UNITS REMAINING\n");
print("\n");
}
while (1) {
for (i = 1; i <= n; i++) {
if (m1 != 0) {
m1 -= m2;
if (m1 <= 0) {
f = f * (1 + m1 / m2);
m2 = m1 + m2;
print("YOU ARE OUT OF FUEL.\n");
m1 = 0;
}
} else {
f = 0;
m2 = 0;
}
m = m - 0.5 * m2;
r4 = r3;
r3 = -0.5 * r0 * Math.pow(v0 / r, 2) + r * a1 * a1;
r2 = (3 * r3 - r4) / 2 + 0.00526 * f1 * f * c / m;
a4 = a3;
a3 = -2 * r1 * a1 / r;
a2 = (3 * a3 - a4) / 2 + 0.0056 * f1 * f * s / (m * r);
x = r1 * t1 + 0.5 * r2 * t1 * t1;
r = r + x;
h0 = h0 + x;
r1 = r1 + r2 * t1;
a = a + a1 * t1 + 0.5 * a2 * t1 * t1;
a1 = a1 + a2 * t1;
m = m - 0.5 * m2;
t = t + t1;
if (h0 < 3.287828e-4)
break;
}
h = h0 * z;
h1 = r1 * z;
d = r0 * a * z;
d1 = r * a1 * z;
t2 = m1 * b / m0;
print(" " + t + "\t" + h + "\t" + d + "\t" + h1 + "\t" + d1 + "\t" + t2 + "\n");
if (h0 < 3.287828e-4) {
if (r1 < -8.21957e-4 || Math.abs(r * a1) > 4.93174e-4 || h0 < -3.287828e-4) {
print("\n");
print("CRASH !!!!!!!!!!!!!!!!\n");
print("YOUR IMPACT CREATED A CRATER " + Math.abs(h) + " " + ms + " DEEP.\n");
x1 = Math.sqrt(d1 * d1 + h1 * h1) * g3;
print("AT CONTACT YOU WERE TRAVELING " + x1 + " " + ns + "/HR\n");
break;
}
if (Math.abs(d) > 10 * z) {
print("YOU ARE DOWN SAFELY - \n");
print("\n");
print("BUT MISSED THE LANDING SITE BY " + Math.abs(d / g5) + " " + ns + ".\n");
break;
}
print("\n");
print("TRANQUILITY BASE HERE -- THE EAGLE HAS LANDED.\n");
print("CONGRATULATIONS -- THERE WAS NO SPACECRAFT DAMAGE.\n");
print("YOU MAY NOW PROCEED WITH SURFACE EXPLORATION.\n");
break;
}
if (r0 * a > 164.474) {
print("\n");
print("YOU HAVE BEEN LOST IN SPACE WITH NO HOPE OF RECOVERY.\n");
break;
}
if (m1 > 0) {
while (1) {
print("T,P,A");
str = await input();
t1 = parseFloat(str);
f = parseFloat(str.substr(str.indexOf(",") + 1));
p = parseFloat(str.substr(str.lastIndexOf(",") + 1));
f = f / 100;
if (t1 < 0) {
print("\n");
print("THIS SPACECRAFT IS NOT ABLE TO VIOLATE THE SPACE-");
print("TIME CONTINUUM.\n");
print("\n");
} else if (t1 == 0) {
break;
} else if (Math.abs(f - 0.05) > 1 || Math.abs(f - 0.05) < 0.05) {
print("IMPOSSIBLE THRUST VALUE ");
if (f < 0) {
print("NEGATIVE\n");
} else if (f - 0.05 < 0.05) {
print("TOO SMALL\n");
} else {
print("TOO LARGE\n");
}
print("\n");
} else if (Math.abs(p) > 180) {
print("\n");
print("IF YOU WANT TO SPIN AROUND, GO OUTSIDE THE MODULE\n");
print("FOR AN E.V.A.\n");
print("\n");
} else {
break;
}
}
if (t1 == 0) {
print("\n");
print("MISSION ABENDED\n");
break;
}
} else {
t1 = 20;
f = 0;
p = 0;
}
n = 20;
if (t1 >= 400)
n = t1 / 20;
t1 = t1 / n;
p = p * 3.14159 / 180;
s = Math.sin(p);
c = Math.cos(p);
m2 = m0 * t1 * f / b;
r3 = -0.5 * r0 * Math.pow(v0 / r, 2) + r * a1 * a1;
a3 = -2 * r1 * a1 / r;
}
print("\n");
while (1) {
print("DO YOU WANT TO TRY IT AGAIN (YES/NO)?\n");
zs = await input();
if (zs == "YES" || zs == "NO")
break;
}
if (zs != "YES")
break;
}
print("\n");
print("TOO BAD, THE SPACE PROGRAM HATES TO LOSE EXPERIENCED\n");
print("ASTRONAUTS.\n");
}
main();

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59 Lunar LEM Rocket/javascript/lunar.html Normal file
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<html>
<head>
<title>LUNAR</title>
</head>
<body>
<pre id="output" style="font-size: 12pt;"></pre>
<script src="lunar.js"></script>
</body>
</html>

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// LUNAR
//
// Converted from BASIC to Javascript by Oscar Toledo G. (nanochess)
//
function print(str)
{
document.getElementById("output").appendChild(document.createTextNode(str));
}
function input()
{
var input_element;
var input_str;
return new Promise(function (resolve) {
input_element = document.createElement("INPUT");
print("? ");
input_element.setAttribute("type", "text");
input_element.setAttribute("length", "50");
document.getElementById("output").appendChild(input_element);
input_element.focus();
input_str = undefined;
input_element.addEventListener("keydown", function (event) {
if (event.keyCode == 13) {
input_str = input_element.value;
document.getElementById("output").removeChild(input_element);
print(input_str);
print("\n");
resolve(input_str);
}
});
});
}
function tab(space)
{
var str = "";
while (space-- > 0)
str += " ";
return str;
}
var l;
var t;
var m;
var s;
var k;
var a;
var v;
var i;
var j;
var q;
var g;
var z;
var d;
function formula_set_1()
{
l = l + s;
t = t - s;
m = m - s * k;
a = i;
v = j;
}
function formula_set_2()
{
q = s * k / m;
j = v + g * s + z * (-q - q * q / 2 - Math.pow(q, 3) / 3 - Math.pow(q, 4) / 4 - Math.pow(q, 5) / 5);
i = a - g * s * s / 2 - v * s + z * s * (q / 2 + Math.pow(q, 2) / 6 + Math.pow(q, 3) / 12 + Math.pow(q, 4) / 20 + Math.pow(q, 5) / 30);
}
function formula_set_3()
{
while (s >= 5e-3) {
d = v + Math.sqrt(v * v + 2 * a * (g - z * k / m));
s = 2 * a / d;
formula_set_2();
formula_set_1();
}
}
// Main program
async function main()
{
print(tab(33) + "LUNAR\n");
print(tab(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY\n");
print("\n");
print("\n");
print("\n");
print("THIS IS A COMPUTER SIMULATION OF AN APOLLO LUNAR\n");
print("LANDING CAPSULE.\n");
print("\n");
print("\n");
print("THE ON-BOARD COMPUTER HAS FAILED (IT WAS MADE BY\n");
print("XEROX) SO YOU HAVE TO LAND THE CAPSULE MANUALLY.\n");
while (1) {
print("\n");
print("SET BURN RATE OF RETRO ROCKETS TO ANY VALUE BETWEEN\n");
print("0 (FREE FALL) AND 200 (MAXIMUM BURN) POUNDS PER SECOND.\n");
print("SET NEW BURN RATE EVERY 10 SECONDS.\n");
print("\n");
print("CAPSULE WEIGHT 32,500 LBS; FUEL WEIGHT 16,500 LBS.\n");
print("\n");
print("\n");
print("\n");
print("GOOD LUCK\n");
l = 0;
print("\n");
print("SEC\tMI + FT\t\tMPH\tLB FUEL\tBURN RATE\n");
print("\n");
a = 120;
v = 1;
m = 33000;
n = 16500;
g = 1e-3;
z = 1.8;
while (1) {
print(l + "\t" + Math.floor(a) + " + " + Math.floor(5280 * (a - Math.floor(a))) + " \t" + Math.floor(3600 * v * 100) / 100 + "\t" + (m - n) + "\t");
k = parseFloat(await input());
t = 10;
should_exit = false;
while (1) {
if (m - n < 1e-3)
break;
if (t < 1e-3)
break;
s = t;
if (m < n + s * k)
s = (m - n) / k;
formula_set_2();
if (i <= 0) {
formula_set_3();
should_exit = true;
break;
}
if (v > 0) {
if (j < 0) {
do {
w = (1 - m * g / (z * k)) / 2;
s = m * v / (z * k * (w + Math.sqrt(w * w + v / z))) + 0.05;
formula_set_2();
if (i <= 0) {
formula_set_3();
should_exit = true;
break;
}
formula_set_1();
if (j > 0)
break;
} while (v > 0) ;
if (should_exit)
break;
continue;
}
}
formula_set_1();
}
if (should_exit)
break;
if (m - n < 1e-3) {
print("FUEL OUT AT " + l + " SECOND\n");
s = (-v * Math.sqrt(v * v + 2 * a * g)) / g;
v = v + g * s;
l = l + s;
break;
}
}
w = 3600 * v;
print("ON MOON AT " + l + " SECONDS - IMPACT VELOCITY " + w + " MPH\n");
if (w <= 1.2) {
print("PERFECT LANDING!\n");
} else if (w <= 10) {
print("GOOD LANDING (COULD BE BETTER)\n");
} else if (w <= 60) {
print("CRAFT DAMAGE... YOU'RE STRANDED HERE UNTIL A RESCUE\n");
print("PARTY ARRIVES. HOPE YOU HAVE ENOUGH OXYGEN!\n");
} else {
print("SORRY THERE WERE NO SURVIVORS. YOU BLEW IT!\n");
print("IN FACT, YOU BLASTED A NEW LUNAR CRATER " + (w * 0.227) + " FEET DEEP!\n");
}
print("\n");
print("\n");
print("\n");
print("TRY AGAIN??\n");
}
}
main();