mirror of
https://github.com/coding-horror/basic-computer-games.git
synced 2025-12-22 15:16:33 -08:00
Removed spaces from top-level directory names.
Spaces tend to cause annoyances in a Unix-style shell environment. This change fixes that.
This commit is contained in:
Chris Reuter
157
86_Target/javascript/target.js
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157
86_Target/javascript/target.js
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// TARGET
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//
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// Converted from BASIC to Javascript by Oscar Toledo G. (nanochess)
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//
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function print(str)
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{
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document.getElementById("output").appendChild(document.createTextNode(str));
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}
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function input()
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{
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var input_element;
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var input_str;
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return new Promise(function (resolve) {
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input_element = document.createElement("INPUT");
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print("? ");
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input_element.setAttribute("type", "text");
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input_element.setAttribute("length", "50");
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document.getElementById("output").appendChild(input_element);
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input_element.focus();
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input_str = undefined;
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input_element.addEventListener("keydown", function (event) {
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if (event.keyCode == 13) {
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input_str = input_element.value;
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document.getElementById("output").removeChild(input_element);
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print(input_str);
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print("\n");
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resolve(input_str);
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}
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});
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});
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}
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function tab(space)
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{
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var str = "";
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while (space-- > 0)
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str += " ";
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return str;
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}
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// Main program
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async function main()
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{
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print(tab(33) + "TARGET\n");
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print(tab(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY\n");
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print("\n");
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print("\n");
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print("\n");
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r = 0; // 1 in original
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r1 = 57.296;
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p = Math.PI;
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print("YOU ARE THE WEAPONS OFFICER ON THE STARSHIP ENTERPRISE\n");
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print("AND THIS IS A TEST TO SEE HOW ACCURATE A SHOT YOU\n");
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print("ARE IN A THREE-DIMENSIONAL RANGE. YOU WILL BE TOLD\n");
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print("THE RADIAN OFFSET FOR THE X AND Z AXES, THE LOCATION\n");
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print("OF THE TARGET IN THREE DIMENSIONAL RECTANGULAR COORDINATES,\n");
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print("THE APPROXIMATE NUMBER OF DEGREES FROM THE X AND Z\n");
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print("AXES, AND THE APPROXIMATE DISTANCE TO THE TARGET.\n");
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print("YOU WILL THEN PROCEEED TO SHOOT AT THE TARGET UNTIL IT IS\n");
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print("DESTROYED!\n");
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print("\n");
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print("GOOD LUCK!!\n");
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print("\n");
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print("\n");
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while (1) {
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a = Math.random() * 2 * p;
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b = Math.random() * 2 * p;
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q = Math.floor(a * r1);
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w = Math.floor(b * r1);
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print("RADIANS FROM X AXIS = " + a + " FROM Z AXIS = " + b + "\n");
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p1 = 100000 * Math.random() + Math.random();
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x = Math.sin(b) * Math.cos(a) * p1;
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y = Math.sin(b) * Math.sin(a) * p1;
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z = Math.cos(b) * p1;
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print("TARGET SIGHTED: APPROXIMATE COORDINATES: X=" + x + " Y=" + y + " Z=" + z + "\n");
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while (1) {
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r++;
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switch (r) {
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case 1:
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p3 = Math.floor(p1 * 0.05) * 20;
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break;
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case 2:
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p3 = Math.floor(p1 * 0.1) * 10;
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break;
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case 3:
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p3 = Math.floor(p1 * 0.5) * 2;
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break;
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case 4:
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p3 = Math.floor(p1);
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break;
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case 5:
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p3 = p1;
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break;
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}
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print(" ESTIMATED DISTANCE: " + p3 + "\n");
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print("\n");
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print("INPUT ANGLE DEVIATION FROM X, DEVIATION FROM Z, DISTANCE");
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str = await input();
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a1 = parseInt(str);
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b1 = parseInt(str.substr(str.indexOf(",") + 1));
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p2 = parseInt(str.substr(str.lastIndexOf(",") + 1));
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print("\n");
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if (p2 < 20) {
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print("YOU BLEW YOURSELF UP!!\n");
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break;
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}
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a1 /= r1;
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b1 /= r1;
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print("RADIANS FROM X AXIS = " + a1 + " ");
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print("FROM Z AXIS = " + b1 + "\n");
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x1 = p2 * Math.sin(b1) * Math.cos(a1);
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y1 = p2 * Math.sin(b1) * Math.sin(a1);
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z1 = p2 * Math.cos(b1);
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d = Math.sqrt((x1 - x) * (x1 - x) + (y1 - y) * (y1 - y) + (z1 - z) * (z1 - z));
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if (d <= 20) {
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print("\n");
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print(" * * * HIT * * * TARGET IS NON-FUNCTIONAL\n");
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print("\n");
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print("DISTANCE OF EXPLOSION FROM TARGET WAS " + d + " KILOMETERS.");
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print("\n");
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print("MISSION ACCOMPLISHED IN " + r + " SHOTS.\n");
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r = 0;
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for (i = 1; i <= 5; i++)
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print("\n");
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print("NEXT TARGET...\n");
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print("\n");
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break;
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}
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x2 = x1 - x;
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y2 = y1 - y;
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z2 = z1 - z;
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if (x2 >= 0)
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print("SHOT IN FRONT OF TARGET " + x2 + " KILOMETERS.\n");
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else
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print("SHOT BEHIND TARGET " + -x2 + " KILOMETERS.\n");
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if (y2 >= 0)
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print("SHOT TO LEFT OF TARGET " + y2 + " KILOMETERS.\n");
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else
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print("SHOT TO RIGHT OF TARGET " + -y2 + " KILOMETERS.\n");
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if (z2 >= 0)
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print("SHOT ABOVE TARGET " + z2 + " KILOMETERS.\n");
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else
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print("SHOT BELOW TARGET " + -z2 + " KILOMETERS.\n");
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print("APPROX POSITION OF EXPLOSION: X=" + x1 + " Y=" + y1 + " Z=" + z1 + "\n");
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print(" DISTANCE FROM TARGET = " + d + "\n");
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print("\n");
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print("\n");
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print("\n");
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}
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}
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}
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main();
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