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"use strict"
function set_has(set, item) {
let a = 0
let b = set.length - 1
while (a <= b) {
let m = (a + b) >> 1
let x = set[m]
if (item < x)
b = m - 1
else if (item > x)
a = m + 1
else
return true
}
return false
}
function set_add(set, item) {
let a = 0
let b = set.length - 1
while (a <= b) {
let m = (a + b) >> 1
let x = set[m]
if (item < x)
b = m - 1
else if (item > x)
a = m + 1
else
return
}
array_insert(set, a, item)
}
function array_insert(array, index, item) {
for (let i = array.length; i > index; --i)
array[i] = array[i - 1]
array[index] = item
}
function calc_distance(a, b) {
let ac = a % 100
let bc = b % 100
let ay = a / 100 | 0
let by = b / 100 | 0
let ax = ac - (ay >> 1)
let bx = bc - (by >> 1)
let az = -ax - ay
let bz = -bx - by
return max(abs(bx-ax), abs(by-ay), abs(bz-az))
}
function for_each_adjacent(hex, fn) {
if (hex / 100 & 1) {
fn(hex - 100)
fn(hex - 99)
fn(hex - 1)
fn(hex + 1)
fn(hex + 100)
fn(hex + 101)
} else {
fn(hex - 101)
fn(hex - 100)
fn(hex - 1)
fn(hex + 1)
fn(hex + 99)
fn(hex + 100)
}
}
function search2(list, a, max) {
for_each_adjacent(a, (b) => {
set_add(list, b)
for_each_adjacent(b, (c) => {
set_add(list, c)
for_each_adjacent(c, (d) => {
set_add(list, d)
})
})
})
}
function search(list, start, max) {
let seen = [ start ]
let queue = [ start << 8 ]
while (queue.length > 0) {
let item = queue.shift()
let here = (item >> 8)
let cost = (item & 255) + 1
for_each_adjacent(here, next => {
if (!set_has(seen, next)) {
set_add(seen, next)
set_add(list, next)
if (cost < max)
queue.push(next << 8 | cost)
}
})
}
}
function mklist(search,n) {
let a, b
search(a=[], 2050, n)
a=a.map(x=>x-2050)
search(b=[], 2150, n)
b=b.map(x=>x-2150)
console.log("const ADJACENT_X" + n + " = [")
console.log("\t" + JSON.stringify(a) + ",")
console.log("\t" + JSON.stringify(b))
console.log("]")
}
mklist(search, 1)
mklist(search, 2)
mklist(search, 3)
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