ctdl.d

// Compile Time D-man Locomotive
// https://qiita.com/dragoon2014/items/2217ab9578c875ecdf69

import std.meta;
import std.range;
import std.algorithm;

const int w = 70;
const int p = 10;
const int delay = 100;

string m1(string str){
    return "pragma(msg, \"\\x1b[\", max(0, w+p-i), `C`, `"~str~"`[min($, max(0, i-w-p))..min($, i)]);";
}

void main(){
    foreach (i; aliasSeqOf!(iota(w+p*2))){
        foreach(dmy; aliasSeqOf!(iota(delay+i))){
            //tacky busy loop
        }
        foreach(dmy; aliasSeqOf!(iota(delay-i))){
            //tacky busy loop
        }
        pragma(msg, "\x1b[2J\x1b[0;0H");
        mixin(m1(`  _   _`));
        mixin(m1(` (_) (_)`));
        mixin(m1(`/______ \`));
        mixin(m1(`\\(O(O \/`));
        mixin(m1(` | | | |`));
        mixin(m1(` | |_| |`));
        mixin(m1(`/______/`));
        static if(i/6%4 == 1){
            mixin(m1(` (_)  >`));
            mixin(m1(`     (_)`));
        }else static if(i/6%4 == 3){
            mixin(m1(`  <  (_)`));
            mixin(m1(` (_)    `));
        }else{
            mixin(m1(`  <   >`));
            mixin(m1(` (_) (_)`));
        }
    }
}