[Из песочницы] Roguelike/RPG на JavaScript (30 строк кода)

(function(elid, wi, he, exp, pot, gld, hp, lvl, cur_e, e_sz){
    var hit = function(){ evs[cur_e][8]-=lvl*4+6; if(evs[cur_e][8]<=0) {
        alert("Monster defeated and you got "+evs[cur_e][10]+"EXP and $"+evs[cur_e][11]);
        exp+=evs[cur_e][10];gld+=evs[cur_e][11]; while(exp>=lvl*10){exp-=lvl*10;lvl++;alert("Level Up!")}
        cur_e++; if(cur_e==e_sz) alert("Victory!") } else {
        hp-=Math.max(0,evs[cur_e][9]-lvl*2-1); if(hp<=0) alert("Game Over!") } }
    var use = function(){ if (pot>0){pot--;hp+=10;if(hp>100)hp=100} }
    var nxt = function(){ cur_e++ }, battle = ["Attack","Use Potion +10HP","Skip Battle",hit,use,nxt],
    canvas=document.querySelector(elid), ctx=canvas.getContext("2d"), evs=[], e_tp=[
    ["Shop", "Wizard provides his services", "Buy Potion $20", "Full Heal $100", "Leave",
     function(){ if(gld>=20){gld-=20;pot++} }, function(){ if(gld>=100){gld-=100;hp=100} }, nxt ],
    ["Skeleton", "A terrible skeleton on your way"].concat(battle,70,15,25,100),
    ["Goblin", "Green goblin wants to get your money"].concat(battle,50,10,15,70),
    ["Slime", "What the strange jelly monster?"].concat(battle,20,6,7,30),
    ["Dragon", "Omg! It is evil Dragon!","Attack","Use Potion +10HP","-",hit,use,,300,25,100,1000 ] ],
        q=e_tp.length-1; canvas.width=wi; canvas.height=he; for (var i=0;i<e_sz-1;i++)
     evs.push( e_tp[Math.floor(Math.random()*q)].slice(0) ); evs.push( e_tp[q].slice(0) );
    var game = setInterval(function(){ ctx.clearRect(0,0,wi,he);
        ctx.fillText("NanoRPG in 30 lines of JavaScript by ripatti",10,15);
        ctx.fillText("LVL "+lvl+"  HP "+hp+"/100  EXP "+exp+"/"+lvl*10+"  ATK "+(lvl*4+6)+
         "  DEF "+(lvl*2+1)+"  Gold $"+gld+"  Potions "+pot,10,30);
        for (var i=0;i<e_sz;i++) ctx.fillText((i==e_sz-1||i<=cur_e)?evs[i][0]:"??",i*50+15,70);
        ctx.fillText("@",cur_e*50+25,60); ctx.fillText(evs[cur_e][1],20,100);
        if (evs[cur_e].length>8) ctx.fillText("Enemy HP "+evs[cur_e][8],250,100);
        for (var i=0;i<3;i++) { ctx.strokeRect(i*120+5,120,110,20);
            ctx.fillText(evs[cur_e][i+2],i*120+10,133); } }, 100);
    document.addEventListener('click', function(e){ for (var i=0;i<3;i++)
        if (i*120+5<=e.pageX && e.pageX<i*120+115 && 120<=e.pageY && e.pageY<140)
            if (hp>0) evs[cur_e][i+5]() }, false);
})("#canvas",365,150,0,3,100,100,1,0,7);

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