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Maze generation: Difference between revisions
→{{header|JavaScript}}
Walterpachl (talk | contribs) (add PL/I) |
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Line 2,355:
var n=x*y-1;
if (n<0) {alert("illegal maze dimensions");return;}
var horiz =[]; for (var j= 0; j<x+1; j++) horiz[j]= []
for (var j = 0; j<x+2; j++) {
unvisited[j] = [];
for (var k= 0; k<y+1; k++)
unvisited[j].push(j>0 && j<x+1 && k>0 && (j != here[0]+1 || k != here[1]+1));
}
while (0<n) {
var potential = [[here[0]+1, here[1]], [here[0],here[1]+1],
[here[0]-1, here[1]], [here[0],here[1]-1]];
var neighbors = [];
for (var j = 0; j < 4; j++)
if (unvisited[potential[j][0]+1][potential[j][1]+1])
neighbors.push(potential[j]);
if (neighbors.length) {
n = n-1;
next= neighbors[Math.floor(Math.random()*neighbors.length)];
unvisited[next[0]+1][next[1]+1]= false;
Line 2,380:
else
verti[(next[0]+here[0]-1)/2][next[1]]= true;
path.push(here = next);
} else
here = path.pop();
}
return
}
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