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RandomDungeon.js
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RandomDungeon.js
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/*
* Random Dungeon Generator: http://donjon.bin.sh/
*
* Adapt by Christophe Matthieu
* https://github.com/Gorash
*
* Creative Commons Attribution-NonCommercial 3.0 Unported License
* http://creativecommons.org/licenses/by-nc/3.0/
*/
(function (module){ "use strict";
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// example : options
var dungeon = new RandomDungeon({
'seed' : 4, // int for randomize dungeon
'n_rows' : 28, // must be an odd number
'n_cols' : 28, // must be an odd number
'dungeon_layout' : 'Normal', // "U", "Box", "Cross" or Array of Array
'room_min' : 4, // minimum room size
'room_max' : 8, // maximum room size
'room_layout' : 'Scattered', // Packed, Scattered or int (number of try to add a room)
'corridor_layout' : 0, // Labyrinth: 0, Straight: 100
'remove_deadends' : 50, // percentage
'add_stairs' : 2, // number of stairs
'map_style' : { // "Standard", "Black" or object
'background': '#dddddd',
'wall': '#999999',
'fill': '#000000',
'open': '#FFFFFF',
'open_grid': '#CCCCCC',
'door': '#aaaaaa',
},
'cell_size' : 18, // pixels
});
console.log(dungeon);
dungeon.render(canvas, {
'hightlight': {
'room': 1,
'corridor': 2,
'grid': 'Hex',
},
'label': true // "Hex", "Square", false
});
*/
var gdLargeFont = "14px Arial";
var gdSmallFont = "12px Arial";
var gdTinyFont = "10px Arial";
var dungeon_layout = {
'U': [[1,0,1],[1,0,1],[1,1,1]],
'Box': [[1,1,1],[1,0,1],[1,1,1]],
'Cross': [[0,1,0],[1,1,1],[0,1,0]]
};
var map_style = {
'Standard': {
'background': '#dddddd',
'wall': '#999999',
'fill': '#000000',
'open': '#FFFFFF',
'open_grid': '#CCCCCC'
},
'Black': {
'background': '#000000',
'wall': '#000000',
'fill': '#000000',
'open': '#FFFFFF',
'open_grid': '#CCCCCC'
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// cell bits
var NOTHING = 0;
var BLOCKED = 1;
var ROOM = 1<<1;
var CORRIDOR = 1<<2;
var PERIMETER = 1<<3;
var ENTRANCE = 1<<4;
var DOOR = 1<<5;
var STAIR_DN = 1<<11;
var STAIR_UP = 1<<12;
var BETWEEN = 1<<13;
var _ROOM_ID = 15;
var OPENSPACE = ROOM | CORRIDOR | ENTRANCE;
var ESPACE = ENTRANCE | DOOR;
var STAIRS = STAIR_DN | STAIR_UP;
var BLOCK_ROOM = BLOCKED | ROOM;
var BLOCK_CORR = BLOCKED | PERIMETER | CORRIDOR | ROOM;
var BLOCK_DOOR = BLOCKED | DOOR;
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// directions
var di = { 'north': -1, 'south': 1, 'west': 0, 'east': 0 };
var dj = { 'north': 0, 'south': 0, 'west': -1, 'east': 1 };
var Dirs = ['north', 'south', 'west', 'east'];
var opposite = {
'north' : 'south',
'south' : 'north',
'west' : 'east',
'east' : 'west'
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// stairs
var stair_end = {
'north': {
'walled' : [[1,-1],[0,-1],[-1,-1],[-1,0],[-1,1],[0,1],[1,1]],
'corridor' : [[0,0],[1,0],[2,0]],
'stair' : [0,0],
'next' : [1,0]
},
'south': {
'walled' : [[-1,-1],[0,-1],[1,-1],[1,0],[1,1],[0,1],[-1,1]],
'corridor' : [[0,0],[-1,0],[-2,0]],
'stair' : [0,0],
'next' : [-1,0]
},
'west': {
'walled' : [[-1,1],[-1,0],[-1,-1],[0,-1],[1,-1],[1,0],[1,1]],
'corridor' : [[0,0],[0,1],[0,2]],
'stair' : [0,0],
'next' : [0,1]
},
'east': {
'walled' : [[-1,-1],[-1,0],[-1,1],[0,1],[1,1],[1,0],[1,-1]],
'corridor' : [[0,0],[0,-1],[0,-2]],
'stair' : [0,0],
'next' : [0,-1]
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// cleaning
var close_end = {
'north': {
'walled' : [[0,-1],[1,-1],[1,0],[1,1],[0,1]],
'close' : [[0,0]],
'recurse' : [-1,0]
},
'south': {
'walled' : [[0,-1],[-1,-1],[-1,0],[-1,1],[0,1]],
'close' : [[0,0]],
'recurse' : [1,0]
},
'west': {
'walled' : [[-1,0],[-1,1],[0,1],[1,1],[1,0]],
'close' : [[0,0]],
'recurse' : [0,-1]
},
'east': {
'walled' : [[-1,0],[-1,-1],[0,-1],[1,-1],[1,0]],
'close' : [[0,0]],
'recurse' : [0,1]
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// imaging
var color_chain = {
'open_grid' : 'wall',
'door' : 'fill',
'label' : 'fill',
'stair' : 'wall',
'wall' : 'fill',
'fill' : 'black'
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// create dungeon
var RandomDungeon = function RandomDungeon (opts) {
for (var k in opts) {
this.data[k] = opts[k];
}
this.data.maxDoor = this.data.maxDoor || 0;
this.data.seed = this.data.seed || 0;
this.data.n_i = this.data.n_rows >> 1;
this.data.n_j = this.data.n_cols >> 1;
this.data.n_rows = this.data.n_i << 1;
this.data.n_cols = this.data.n_j << 1;
this.data.max_row = this.data.n_rows - 1;
this.data.max_col = this.data.n_cols - 1;
this.data.n_rooms = 0;
var max = this.data.room_max;
var min = this.data.room_min;
this.data.room_base = (min + 1) >> 1;
this.data.room_radix = (max - min) >> 1;
this.init_cells();
this.emplace_rooms();
this.open_rooms();
this.corridors();
this.connect_corridors();
if (this.data.add_stairs) {
this.emplace_stairs();
}
this.clean_dungeon();
this.data_map();
};
RandomDungeon.prototype.data = {};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// generate random number
RandomDungeon.prototype.RNG = function () {
return (this.data.seed = (this.data.seed+1) * 16871 % 2147483647) / 2147483647;
};
RandomDungeon.prototype.RNGDouble = function(min,max) {
return min + (max - min) * this.RNG();
};
RandomDungeon.prototype.RNGInt = function(min,max) {
min -= 0.4999;
max += 0.4999;
return Math.round(min + (max - min) * this.RNG());
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// initialize cells
RandomDungeon.prototype.init_cells = function () {
this.cells = [];
for (var r = 0; r <= this.data.n_rows; r++) {
this.cells[r] = [];
for (var c = 0; c <= this.data.n_cols; c++) {
this.cells[r][c] = NOTHING;
}
}
var mask = this.data.dungeon_layout instanceof Array ?
this.data.dungeon_layout : dungeon_layout[this.data.dungeon_layout];
if (mask) {
this.mask_cells(mask);
} else if (this.data.dungeon_layout === 'Round') {
this.round_mask();
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// mask cells
RandomDungeon.prototype.mask_cells = function (mask) {
var r_x = (mask.length / this.data.n_rows);
var c_x = (mask[0].length / this.data.n_cols);
for (var r = 0; r < this.data.n_rows; r++) {
for (var c = 0; c < this.data.n_cols; c++) {
this.cells[r][c] = mask[Math.floor(r * r_x)][Math.floor(c * c_x)] ? NOTHING : BLOCKED;
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// round mask
RandomDungeon.prototype.round_mask = function () {
var center_r = Math.floor(this.data.n_rows / 2);
var center_c = Math.floor(this.data.n_cols / 2);
for (var r = 0; r <= this.data.n_rows; r++) {
for (var c = 0; c <= this.data.n_cols; c++) {
var d = Math.sqrt(Math.pow(r - center_r, 2) + Math.pow(c - center_c, 2));
if(d > center_c) {
this.cells[r][c] = BLOCKED;
}
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// emplace rooms
RandomDungeon.prototype.emplace_rooms = function () {
this.rooms = [];
this.doors = [];
if (this.data.room_layout == 'Packed') {
this.pack_rooms();
} else {
this.scatter_rooms();
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// pack rooms
RandomDungeon.prototype.pack_rooms = function () {
for (var i = 0; i < this.data.n_i; i++) {
var r = (i * 2) + 1;
for (var j = 0; j < this.data.n_j; j++) {
var c = (j * 2) + 1;
if ((this.cells[r][c] & ROOM) ||
((i == 0 || j == 0) && !this.RNGInt(0,3)))
continue;
var proto = { 'i': i, 'j': j };
this.emplace_room(proto);
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// scatter rooms
RandomDungeon.prototype.scatter_rooms = function () {
// allocate number of rooms
var n_rooms;
if (typeof this.data.room_layout === "number") {
n_rooms = this.data.room_layout;
} else {
var dungeon_area = this.data.n_cols * this.data.n_rows;
var room_area = this.data.room_max * this.data.room_max;
n_rooms = Math.floor(dungeon_area / room_area);
}
for (var i = 0; i < n_rooms; i++) {
this.emplace_room({});
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// emplace room
RandomDungeon.prototype.emplace_room = function (proto) {
if (this.data.n_rooms == 999) return;
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// room position and size
proto = this.set_room(proto);
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// room boundaries
var r1 = ( proto.i * 2) + 1;
var c1 = ( proto.j * 2) + 1;
var r2 = ((proto.i + proto.height) * 2) - 1;
var c2 = ((proto.j + proto.width ) * 2) - 1;
if (r1 < 1 || r2 > this.data.max_row) return;
if (c1 < 1 || c2 > this.data.max_col) return;
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// check for collisions with existing rooms
var hit_list = this.sound_room(r1,c1,r2,c2);
if (hit_list == null) return;
if (hit_list.length != 0) return;
var room_id = this.data.n_rooms || 0;
this.data.n_rooms++;
this.data.last_room_id = room_id;
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// emplace room
for (var r = r1; r <= r2; r++) {
for (var c = c1; c <= c2; c++) {
if (this.cells[r][c] & ENTRANCE) {
this.cells[r][c] &= ~ ESPACE;
} else if (this.cells[r][c] & PERIMETER) {
this.cells[r][c] &= ~ PERIMETER;
}
this.cells[r][c] |= ROOM | (room_id << _ROOM_ID);
}
}
var height = ((r2 - r1) + 1);
var width = ((c2 - c1) + 1);
var room_data = {
'id': room_id,
'row': r1,
'col': c1,
'north': r1,
'south': r2,
'west': c1,
'east': c2,
'height': height,
'width': width,
'area': (height * width),
'connect': [],
'door': {}
};
this.rooms[room_id] = room_data;
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// block corridors from room boundary
// check for door openings from adjacent rooms
for (var r = r1 - 1; r <= r2 + 1; r++) {
if (!(this.cells[r][c1 - 1] & (ROOM | ENTRANCE))) {
this.cells[r][c1 - 1] |= PERIMETER;
}
if (!(this.cells[r][c2 + 1] & (ROOM | ENTRANCE))) {
this.cells[r][c2 + 1] |= PERIMETER;
}
}
for (var c = c1 - 1; c <= c2 + 1; c++) {
if (!(this.cells[r1 - 1][c] & (ROOM | ENTRANCE))) {
this.cells[r1 - 1][c] |= PERIMETER;
}
if (!(this.cells[r2 + 1][c] & (ROOM | ENTRANCE))) {
this.cells[r2 + 1][c] |= PERIMETER;
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// room position and size
RandomDungeon.prototype.set_room = function (proto) {
var base = this.data.room_base;
var radix = this.data.room_radix;
if (proto.height == null) {
if (proto.i != null) {
var a = this.data.n_i - base - proto.i;
var r = (a < radix) ? a : radix;
proto.height = this.RNGInt(0,r) + base;
} else {
proto.height = this.RNGInt(0,radix) + base;
}
}
if (proto.width == null) {
if (proto.j != null) {
var a = this.data.n_j - base - proto.j;
if (a < 0) a = 0;
var r = (a < radix) ? a : radix;
proto.width = this.RNGInt(0,r) + base;
} else {
proto.width = this.RNGInt(0,radix) + base;
}
}
if (proto.i == null) {
proto.i = this.RNGInt(0,this.data.n_i - proto.height);
}
if (proto.j == null) {
proto.j = this.RNGInt(0,this.data.n_j - proto.width);
}
return proto;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// sound room
RandomDungeon.prototype.sound_room = function (r1,c1,r2,c2) {
var hit = [];
for (var r = r1; r <= r2; r++) {
for (var c = c1; c <= c2; c++) {
if (this.cells[r][c] & BLOCKED) {
return null;
}
if (this.cells[r][c] & ROOM) {
var id = this.cells[r][c] >> _ROOM_ID;
if (hit.indexOf(id) === -1) {
hit.push(id);
}
}
}
}
return hit;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// emplace openings for doors and corridors
RandomDungeon.prototype.open_rooms = function () {
for (var id = 0; id < this.data.n_rooms; id++) {
this.open_room(this.rooms[id]);
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// emplace openings for doors and corridors
RandomDungeon.prototype.open_room = function (room) {
var list = this.door_sills(room);
if (!list || !list.length) return;
var n_opens = this.alloc_opens(room);
for (var i = 0; i < n_opens; i++) {
var sill = list.splice(this.RNGInt(0,list.length-1),1)[0];
if (!sill) break;
var door_r = sill.door_r;
var door_c = sill.door_c;
var door_cell = this.cells[door_r][door_c];
if (door_cell & DOOR) continue;
var out_id = sill.out_id;
if (out_id != null) {
if (room.connect.indexOf(this.rooms[out_id].id) !== -1) continue;
room.connect.push(this.rooms[out_id].id);
if (this.rooms[out_id].connect.indexOf(room.id) !== -1) continue;
this.rooms[out_id].connect.push(room.id);
this.cells[door_r][door_c] |= BETWEEN;
}
var open_dir = sill.dir;
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// open door
var door = this.open_door(door_r, door_c, out_id, room.id);
for (var x = 0; x < 3; x++) {
var r = sill.sill_r + (di[open_dir] * x);
var c = sill.sill_c + (dj[open_dir] * x);
this.cells[r][c] &= ~ PERIMETER;
this.cells[r][c] |= ENTRANCE;
}
this.cells[door_r][door_c] |= DOOR;
if (out_id != null) {
if (this.rooms[out_id].door[opposite[open_dir]] == null)
this.rooms[out_id].door[opposite[open_dir]] = [];
this.rooms[out_id].door[opposite[open_dir]].push(door);
} else {
this.cells[door_r][door_c] |= CORRIDOR;
}
if (room.door[open_dir] == null)
room.door[open_dir] = [];
room.door[open_dir].push(door);
door.id = this.doors.length;
this.doors.push(door);
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// create door
RandomDungeon.prototype.open_door = function (row, col, out_id, in_id) {
return {
'row': row,
'col': col,
'out_id': out_id,
'in_id': in_id
};
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// allocate number of opens
RandomDungeon.prototype.alloc_opens = function (room) {
var room_h = ((room.south - room.north) / 2) + 1;
var room_w = ((room.east - room.west) / 2) + 1;
var flumph = Math.floor(Math.sqrt(room_w * room_h));
return flumph + this.RNGInt(0,flumph);
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// list available sills
RandomDungeon.prototype.door_sills = function (room) {
var list = [];
if (room.north >= 3) {
for (var c = room.west; c <= room.east; c += 2) {
var proto = this.check_sill(room,room.north,c,'north');
if (proto) list.push(proto);
}
}
if (room.south <= (this.data.n_rows - 3)) {
for (var c = room.west; c <= room.east; c += 2) {
var proto = this.check_sill(room,room.south,c,'south');
if (proto) list.push(proto);
}
}
if (room.west >= 3) {
for (var r = room.north; r <= room.south; r += 2) {
var proto = this.check_sill(room,r,room.west,'west');
if (proto) list.push(proto);
}
}
if (room.east <= (this.data.n_cols - 3)) {
for (var r = room.north; r <= room.south; r += 2) {
var proto = this.check_sill(room,r,room.east,'east');
if (proto) list.push(proto);
}
}
return this.shuffle(list);
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// check sill
RandomDungeon.prototype.check_sill = function (room, sill_r, sill_c, dir) {
var door_r = sill_r + di[dir];
var door_c = sill_c + dj[dir];
var door_cell = this.cells[door_r][door_c];
if (!(door_cell & PERIMETER)) return;
if (door_cell & BLOCK_DOOR) return;
var out_r = door_r + di[dir];
var out_c = door_c + dj[dir];
var out_cell = this.cells[out_r][out_c];
if (out_cell & BLOCKED) return;
var out_id;
if (out_cell & ROOM) {
out_id = out_cell >> _ROOM_ID;
if (out_id == room.id) return;
}
return {
'sill_r' : sill_r,
'sill_c' : sill_c,
'dir' : dir,
'door_r' : door_r,
'door_c' : door_c,
'out_id' : out_id,
};
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// shuffle list
RandomDungeon.prototype.shuffle = function (list) {
var nlist = [], item;
while (item = list.splice(this.RNGInt(0,list.length-1),1)[0]) {
nlist.push(item);
}
return nlist;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// generate corridors
RandomDungeon.prototype.corridors = function () {
for (var i = 1; i < this.data.n_i; i++) {
var r = (i * 2) + 1;
for (var j = 1; j < this.data.n_j; j++) {
var c = (j * 2) + 1;
if (this.cells[r][c] & CORRIDOR) continue;
this.tunnel(i,j);
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// recursively tunnel
RandomDungeon.prototype.tunnel = function (i,j,last_dir) {
var dirs = this.tunnel_dirs(last_dir);
for (var k=0,len=dirs.length; k<len; k++) {
var dir = dirs[k];
if (this.open_tunnel(i,j,dir)) {
var next_i = i + di[dir];
var next_j = j + dj[dir];
this.tunnel(next_i,next_j,dir);
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// tunnel directions
RandomDungeon.prototype.tunnel_dirs = function (last_dir) {
var p = this.data.corridor_layout;
var dirs = this.shuffle(Dirs.slice(0,Dirs.length));
if (last_dir && p) {
if (this.RNGInt(0,100) < p) {
dirs.unshift(last_dir);
}
}
return dirs;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// open tunnel
RandomDungeon.prototype.open_tunnel = function (i,j,dir) {
var this_r = (i * 2) + 1;
var this_c = (j * 2) + 1;
var next_r = ((i + di[dir]) * 2) + 1;
var next_c = ((j + dj[dir]) * 2) + 1;
var mid_r = (this_r + next_r) / 2;
var mid_c = (this_c + next_c) / 2;
var sound = this.sound_tunnel(mid_r,mid_c,next_r,next_c);
if (sound === 1) {
return this.delve_tunnel(this_r,this_c,next_r,next_c);
}
return 0;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// sound tunnel
// don't open blocked cells, room perimeters, or other corridors
RandomDungeon.prototype.sound_tunnel = function (mid_r,mid_c,next_r,next_c) {
if (next_r < 0 || next_r > this.data.n_rows) return 0;
if (next_c < 0 || next_c > this.data.n_cols) return 0;
var r1 = Math.min(mid_r,next_r);
var r2 = Math.max(mid_r,next_r);
var c1 = Math.min(mid_c,next_c);
var c2 = Math.max(mid_c,next_c);
for (var r = r1; r <= r2; r++) {
for (var c = c1; c <= c2; c++) {
if (this.cells[r][c] & BLOCK_CORR) {
return 0;
}
}
}
return 1;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// delve tunnel
RandomDungeon.prototype.delve_tunnel = function (this_r,this_c,next_r,next_c) {
var r1 = Math.min(this_r,next_r);
var r2 = Math.max(this_r,next_r);
var c1 = Math.min(this_c,next_c);
var c2 = Math.max(this_c,next_c);
for (var r = r1; r <= r2; r++) {
for (var c = c1; c <= c2; c++) {
this.cells[r][c] &= ~ ROOM;
this.cells[r][c] &= ~ ENTRANCE;
this.cells[r][c] |= CORRIDOR;
this.cells[r][c] &= ~ (this.cells[r][c] >> _ROOM_ID << _ROOM_ID);
}
}
return 1;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// emplace stairs
RandomDungeon.prototype.emplace_stairs = function () {
this.stairs = [];
var n = this.data.add_stairs;
if (n <= 0) return;
var list = this.stair_ends();
if (!list.length) return;
for (var i = 0; i < n; i++) {
var stair = list.splice(this.RNGInt(0,list.length-1),1)[0];
if (stair == null) return;
var r = stair.row;
var c = stair.col;
var type = (i < 2) ? i : this.RNGInt(0,2);
if (type === 0) {
this.cells[r][c] |= STAIR_DN;
stair.key = 'down';
} else {
this.cells[r][c] |= STAIR_UP;
stair.key = 'up';
}
stair.id = this.stairs.length;
this.stairs.push(stair);
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// list available ends
RandomDungeon.prototype.stair_ends = function () {
var list = [];
for (var i = 0; i < this.data.n_i; i++) {
var r = (i * 2) + 1;
for (var j = 0; j < this.data.n_j; j++) {
var c = (j * 2) + 1;
if (!(this.cells[r][c] & CORRIDOR)) continue;
if (this.cells[r][c] & STAIRS) continue;
for (var k in stair_end) {
var stair = stair_end[k];
if (this.check_tunnel(r,c,stair)) {
var end = { 'row': r, 'col': c };
var n = stair.next;
end.next_row = end.row + n[0];
end.next_col = end.col + n[1];
list.push(end);
}
}
}
}
return list;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// entrance corridors (entrance to corridor)
RandomDungeon.prototype.entrance_corridors = function (p,xc) {
for (var r = 0; r <= this.data.n_rows; r++) {
for (var c = 0; c <= this.data.n_cols; c++) {
if ((this.cells[r][c] & ENTRANCE) && !(this.cells[r][c] & (ROOM | DOOR))) {
this.cells[r][c] &= CORRIDOR;
}
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// collapse tunnels
RandomDungeon.prototype.collapse_tunnels = function (p,xc) {
if (p == null) return;
var all = (p == 100);
for (var i = 0; i < this.data.n_i; i++) {
var r = (i * 2) + 1;
for (var j = 0; j < this.data.n_j; j++) {
var c = (j * 2) + 1;
if (!(this.cells[r][c] & OPENSPACE)) continue;
if (this.cells[r][c] & STAIRS) continue;
if (!all && (this.RNGInt(0,100) >= p)) continue;
this.collapse(r,c,xc);
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// connect tunnels
RandomDungeon.prototype.connect_corridors = function () {
var id = 1;
this.corridors = [null];
for (var r = 0; r <= this.data.n_rows; r++) {
for (var c = 0; c <= this.data.n_cols; c++) {
if (this.cells[r][c] & CORRIDOR) {
var corridor = {'id': id};
corridor.cells = this.connect_corridor(r,c,id);
if (corridor.cells.length) {
var door = 0;
for (var i=0; i<corridor.cells.length; i++) {
var cell = this.cells[corridor.cells[i].row][corridor.cells[i].col];
if (cell & DOOR) {
door += (cell & BETWEEN) ? 2 : 1;
}
}
if (door !== 0) {
this.corridors.push(corridor);
id++;
} else {
for (var i=0; i<corridor.cells.length; i++) {
this.cells[corridor.cells[i].row][corridor.cells[i].col] = NOTHING;
}
}
}
}
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// connect tunnels
RandomDungeon.prototype.data_map = function () {
this.data_corridors();
this.map = [];
var data;
for (var r = 0; r < this.data.n_rows; r++) {
this.map[r] = [];
for (var c = 0; c < this.data.n_cols; c++) {
if (this.cells[r][c] && this.cells[r][c] != PERIMETER) {
this.map[r][c] = {'row': r, 'col': c};
if (this.cells[r][c] & ROOM) {
this.map[r][c].room = this.cells[r][c] >> _ROOM_ID;
}
if (this.cells[r][c] & CORRIDOR) {
this.map[r][c].corridor = this.cells[r][c] >> _ROOM_ID;
}
if (this.cells[r][c] & STAIRS) {
for (var i=0; i<this.stairs.length; i++) {
data = this.stairs[i];
if (data.row == r && data.col == c) this.map[r][c].stair = data.id;
}
}
if (this.cells[r][c] & DOOR) {
for (var i=0; i<this.doors.length; i++) {
data = this.doors[i];
if (data.row == r && data.col == c) this.map[r][c].door = data.id;
}
}
} else {
this.map[r][c] = null;
}
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// data corridors
RandomDungeon.prototype.data_corridors = function () {
var id = 1;
for (var k = 1; k < this.corridors.length; k++) {
var corridor = this.corridors[k];
for (var i=0; i<corridor.cells.length; i++) {
var tcell = corridor.cells[i];
var cell = this.cells[tcell.row][tcell.col];
if (cell & DOOR) {
if (corridor.doors == null) {
corridor.doors = [];
corridor.rooms = [];
}
for (var u=0; u<this.doors.length; u++) {
var door = this.doors[u];
if (door.row == tcell.row && door.col == tcell.col) {
corridor.doors.push(door.id);
if (corridor.rooms.indexOf(door.in_id) === -1) {
corridor.rooms.push(door.in_id);
}
if (door.out_id && corridor.rooms.indexOf(door.out_id) === -1) {
corridor.rooms.push(door.out_id);
}
break;
}
}
}
if (cell & STAIRS) {
if (corridor.stairs == null) corridor.stairs = [];
for (var u=0; u<this.stairs.length; u++) {
var stair = this.stairs[u];
if (stair.row == tcell.row && stair.col == tcell.col) {
corridor.stairs.push(stair.id);
break;
}
}
}
}
}
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// connect tunnel and add id to tunnels
RandomDungeon.prototype.connect_corridor = function (r,c,id) {
var cells = [];
var blacklist = [];
var list = [];
var dir;
var n_cols = this.data.n_cols + 1;
function add(r,c) {
var hash = r * n_cols + c;
if (blacklist[hash] == null) {
list.push([r,c]);
blacklist[hash] = true;
}
}
add(r,c);
while (dir = list.pop()) {
r = dir[0];
c = dir[1];
var cell = this.cells[r] && this.cells[r][c];
if (!cell) continue;
if (!((cell & CORRIDOR) || ((cell & ENTRANCE) && !(cell & ROOM)))) continue;
if (cell >> _ROOM_ID) continue;
this.cells[r][c] |= (id << _ROOM_ID) | CORRIDOR;
cells.push({'row': r, 'col': c});
add(r+1,c);
add(r-1,c);
add(r,c+1);
add(r,c-1);
}
return cells;
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// collapse
RandomDungeon.prototype.collapse = function (r,c,xc) {