arg/scriptcraft
Archived
3
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

Maze generation using Drone

Browse source 
Point at the ground. Try /js amazing(5,7)
This commit is contained in:
Robert Storlind 2014-03-10 14:10:54 +01:00
parent fae2b6aac7
commit 1a1837cc7e
1 changed files with 108 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

108
src/main/js/plugins/drone/contrib/mazegen.js Normal file
View file

@ -0,0 +1,108 @@
// Maze generation based on http://rosettacode.org/wiki/Maze_generation#JavaScript
var Drone = require('../drone').Drone;
function maze_make(x,y) {
var n=x*y-1;
if (n<0) {
echo("illegal maze dimensions");
return ({x: 0, y: 0});
}
var horiz=[]; for (var j= 0; j<x+1; j++) horiz[j]= [];
var verti=[]; for (var j= 0; j<y+1; j++) verti[j]= [];
var here= [Math.floor(Math.random()*x), Math.floor(Math.random()*y)];
var path= [here];
var unvisited= [];
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;
if (next[0] == here[0])
horiz[next[0]][(next[1]+here[1]-1)/2]= true;
else
verti[(next[0]+here[0]-1)/2][next[1]]= true;
path.push(here= next);
} else
here= path.pop();
}
return ({x: x, y: y, horiz: horiz, verti: verti});
}
function maze_display(m) {
var text= [];
for (var j= 0; j<m.x*2+1; j++) {
var line= [];
if (0 == j%2)
for (var k=0; k<m.y*4+1; k++)
if (0 == k%4)
line[k]= '+';
else
if (j>0 && m.verti[j/2-1][Math.floor(k/4)])
line[k]= ' ';
else
line[k]= '-';
else
for (var k=0; k<m.y*4+1; k++)
if (0 == k%4)
if (k>0 && m.horiz[(j-1)/2][k/4-1])
line[k]= ' ';
else
line[k]= '|';
else
line[k]= ' ';
if (0 == j) line[1]= line[2]= line[3]= ' ';
if (m.x*2-1 == j) line[4*m.y]= ' ';
text.push(line.join('')+' \r\n'); // TWEAKED: space added to get an even number of columns
}
return text.join('');
}
// ScriptCraft stuff starts here
// Helper function to parse the ASCII art into Drone actions
// You might also consider creating a new maze_display but for now this will do the work
function maze_draw(maze_string, d) {
// d is the Drone to use
d.up().chkpt('maze-start');
for (var j = 0; j < maze_string.length; j += 2) {
switch(maze_string.substr(j, 2)) {
case ' ':
d.box(0).fwd(); // Make sure to empty this position
break;
case '\r\n':
d.move('maze-start');
d.right().chkpt('maze-start');
break;
default: // '+ ', '+-', '--', '| '
if (j == 0) {
d.box(blocks.glowstone); // highlight the maze entry and exit
} else if (j == maze_string.length - 4) {
d.box(blocks.glass);
} else {
d.box(blocks.oak);
}
d.fwd();
}
}
}
// User-facing code starts here
// Example: Try /js amazing(5,7)
Drone.extend('amazing', function(size_x, size_y) {
m = maze_make(size_x, size_y);
if (m.x > 0 && m.y > 0) {
maze_draw(maze_display(m), this);
}
});