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klotski
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remove: some legacy code

legacy
Dnomd343 2 years ago
parent
46d1ec2a64
commit
825abf8d7b
5 changed files with 0 additions and 224 deletions
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  1. 9
      include/case.h
  2. 9
      include/common.h
  3. 131
      src-legacy/case.cc
  4. 20
      src-legacy/common.cc
  5. 55
      src-legacy/klotski.cc

9
include/case.h
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@ -1,9 +0,0 @@
#ifndef _CASE_H_
#define _CASE_H_
#include <cstdint>
#include <vector>
void find_all_case(std::vector<uint64_t> *all_case);
#endif

9
include/common.h
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@ -1,9 +0,0 @@
#ifndef _COMMON_H_
#define _COMMON_H_
#include <cstdint>
void binary_reverse(uint32_t &range);
void binary_to_str(uint64_t binary, char *string);
#endif

131
src-legacy/case.cc
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@ -1,131 +0,0 @@
#include "case.h"
#include "common.h"
#include <algorithm>
bool check_case(int head, uint32_t range);
void build_base_range(std::vector<uint32_t> &base_range);
void gen_range(std::vector<uint32_t> &release, int n1, int n2, int n3, int n4);
inline int binary_num(uint32_t binary, int length) { // get number of non-zero bit
int num = 0;
for (int i = 0; i < length; ++i) {
num += int((binary >> i) & 0x1);
}
return num;
}
void find_all_case(std::vector<uint64_t> *all_case) {
all_case->clear();
std::vector<uint32_t> base_range;
build_base_range(base_range);
for (int head = 0; head < 16; ++head) { // address for 2x2 block
if (head % 4 != 3) {
uint64_t prefix = int64_t(head) << 32;
for (auto range : base_range) { // combine 2x2 address and range
if (check_case(head, range)) {
binary_reverse(range);
all_case->emplace_back(prefix | range);
}
}
}
}
}
void build_base_range(std::vector<uint32_t> &base_range) {
for (int n = 0; n <= 7; ++n) { // number of 1x2 and 2x1 block -> 0 ~ (20 - 4 - 2) / 2
for (int n_2x1 = 0; n_2x1 <= n; ++n_2x1) { // number of 1x2 block
for (int n_1x1 = 0; n_1x1 <= (14 - n * 2); ++n_1x1) { // number of 1x1 block
gen_range(base_range, (16 - n * 2 - n_1x1), (n - n_2x1), n_2x1, n_1x1);
}
}
}
for (auto &bin : base_range) {
binary_reverse(bin);
}
std::sort(base_range.begin(), base_range.end());
for (auto &bin : base_range) {
binary_reverse(bin);
}
}
void gen_range(std::vector<uint32_t> &release, int n1, int n2, int n3, int n4) {
std::vector<uint32_t> cache_1, cache_2;
int length = n1 + n2;
for (uint32_t bin = 0; bin < (0x1 << length); ++bin) {
if (binary_num(bin, length) == n2) { // match binary with `n2` non-zero bit
uint32_t range = 0;
for (int i = 0; i < length; ++i) { // generate range base on binary value
(range <<= 2) |= ((bin >> i) & 0x1);
}
cache_1.emplace_back(range); // insert into cache level 1
}
}
length = n1 + n2 + n3;
for (uint32_t bin = 0; bin < (0x1 << length); ++bin) {
if (binary_num(bin, length) == n3) { // match binary with `n3` non-zero bit
for (auto base : cache_1) { // traverse cache level 1
uint32_t range = 0;
for (int i = 0; i < length; ++i) { // generate range base on binary value
if ((bin >> i) & 1) { // non-zero bit
(range <<= 2) |= 0x2;
} else { // zero bit
(range <<= 2) |= (base & 0x3);
base >>= 2;
}
}
cache_2.emplace_back(range); // insert into cache level 2
}
}
}
length = n1 + n2 + n3 + n4;
for (uint32_t bin = 0; bin < (0x1 << length); ++bin) {
if (binary_num(bin, length) == n4) { // match binary with `n4` non-zero bit
for (auto base : cache_2) { // traverse cache level 2
uint32_t range = 0;
for (int i = 0; i < length; ++i) { // generate range base on binary value
if ((bin >> i) & 1) { // non-zero bit
(range <<= 2) |= 0x3;
} else { // zero bit
(range <<= 2) |= (base & 0x3);
base >>= 2;
}
}
release.emplace_back(range); // insert into release
}
}
}
}
bool check_case(int head, uint32_t range) { // whether case is valid
uint32_t status = 0x33 << head;
for (int addr = 0; range; range >>= 2) {
while (status >> addr & 0x1) {
++addr;
}
switch (range & 0x3) {
case 0x0: // space
case 0x3: // 1x1
if (addr > 19) {
return false;
}
status |= 0x1 << addr;
break;
case 0x1: // 1x2
if (addr % 4 == 3 || addr > 18 || status >> (addr + 1) & 0x1) {
return false;
}
status |= 0x3 << addr;
break;
case 0x2: // 2x1
if (addr > 15 || status >> (addr + 4) & 0x1) {
return false;
}
status |= 0x11 << addr;
break;
}
}
return true;
}

20
src-legacy/common.cc
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@ -1,20 +0,0 @@
#include "common.h"
void binary_reverse(uint32_t &range) { // reverse binary every 2 bits
range = ((range << 16) & 0xFFFF0000) | ((range >> 16) & 0x0000FFFF);
range = ((range << 8) & 0xFF00FF00) | ((range >> 8) & 0x00FF00FF);
range = ((range << 4) & 0xF0F0F0F0) | ((range >> 4) & 0x0F0F0F0F);
range = ((range << 2) & 0xCCCCCCCC) | ((range >> 2) & 0x33333333);
}
void binary_to_str(uint64_t binary, char *string) {
for (int i = 0; i < 9; ++i, ++string) { // only read low 9 * 4 bits
*string = int8_t(binary >> (8 - i) * 4 & 0xF);
if (*string < 10) {
*string += 48; // 0 -> 48
} else {
*string += 55; // A -> 65
}
}
string[9] = 0x0; // string ending
}

55
src-legacy/klotski.cc
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@ -1,55 +0,0 @@
#include "common.h"
#include "klotski.h"
uint64_t compact_code(uint64_t code) {
int block_num = 0;
uint64_t ret = 0;
uint32_t range = 0;
for (int addr = 0; code; ++addr, code >>= 3) {
switch (code & 0x7) {
case B_space:
range <<= 2;
break;
case B_1x2:
(range <<= 2) |= 0x1;
break;
case B_2x1:
(range <<= 2) |= 0x2;
break;
case B_1x1:
(range <<= 2) |= 0x3;
break;
case B_2x2:
ret |= uint64_t(addr) << 32;
default:
continue;
}
++block_num;
}
return ret | range << (16 - block_num) * 2;
}
uint64_t extract_code(uint64_t code) {
uint64_t ret = C_2x2 << (code >> 32) * 3;
auto range = uint32_t(code);
binary_reverse(range);
for (int addr = 0; range; range >>= 2) {
while (0x7 & ret >> addr) {
addr += 3;
}
switch (range & 0x3) {
case 0x1:
ret |= C_1x2 << addr;
break;
case 0x2:
ret |= C_2x1 << addr;
break;
case 0x3:
ret |= C_1x1 << addr;
break;
case 0x0:
addr += 3;
}
}
return ret;
}
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