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#include "puzzle.hpp"
#include "gameplay.hpp"
#include "image_converter/resources.hpp"
#include <algorithm>
#include <stdlib.h>
#include <string>
#include <string.h>
#include <FL/Fl.H>
#include <FL/Fl_PNG_Image.H>
#include <FL/fl_ask.H>
#include <utility>
#include <memory>
#include <filesystem>
#include <random>
GameParams* GameParams::instance = nullptr;
void GameParams::CalculateStandardPuzzlePos()
{
coordinates tmp;
int i, j, k = 0;
for(i = 0; i < puzzles_per_side; ++i)
for(j = 0; j < puzzles_per_side; ++j, ++k) {
tmp.x = i * (puzzle_size + spacing) + spacing;
tmp.y = j * (puzzle_size + spacing) + spacing + 30;
standard_puzzle_coordinates[k] = tmp;
}
}
void GameParams::ResetFreePuzzles()
{
for(int i = 0; i < puzzle_pieces; ++i)
free_puzzles[i] = 1;
}
static void find_path_to_picture(std::string& path,
const std::string& cur_directory, int number)
{
path =
cur_directory + std::to_string(number / puzzles_per_side) +
std::to_string(number % puzzles_per_side) + ".png";
}
Fl_PNG_Image *GameParams::LoadPictureParts(std::unique_ptr<Puzzle>& tmp_puzzle)
{
Fl_PNG_Image *img = nullptr;
/*
* if loading from Resources dir
*/
if(cur_directory.size()) {
find_path_to_picture(tmp_puzzle->path, cur_directory,
tmp_puzzle->sequence_number);
img = new Fl_PNG_Image(tmp_puzzle->path.c_str());
/*
* loading a standard image from RAM (image_converter/resources.cpp)
*/
} else {
int offset = 0;
for(int i = 0; i < tmp_puzzle->sequence_number; ++i)
offset += image_sizes[i];
unsigned char *image_buffer = image_data + offset;
img = new Fl_PNG_Image(nullptr, image_buffer,
image_sizes[tmp_puzzle->sequence_number]);
}
return img;
}
void GameParams::NextUntestedPuzzles()
{
int idx_random_puzzle;
std::unique_ptr<Puzzle> tmp_puzzle;
/*
* check if puzzles already were created
*/
if(puzzles.size() != 0) {
puzzles.clear();
Fl::do_widget_deletion();
}
/*
* ======== creating puzzles ===========
*/
win->begin();
for(int i = 0; i < puzzle_pieces; ++i) {
idx_random_puzzle =
0 + (int)((double)puzzle_pieces * rand()/(RAND_MAX + 1.0));
while(!free_puzzles[idx_random_puzzle])
idx_random_puzzle =
0 + (int)((double)puzzle_pieces * rand()/(RAND_MAX + 1.0));
free_puzzles[idx_random_puzzle] = 0;
/* empty puzzle */
if(idx_random_puzzle == puzzle_pieces-1) {
SetXYEmptyBox(standard_puzzle_coordinates[i].x,
standard_puzzle_coordinates[i].y);
continue;
}
/* common puzzle */
tmp_puzzle =
std::unique_ptr<Puzzle>(new Puzzle(standard_puzzle_coordinates[i].x,
standard_puzzle_coordinates[i].y));
tmp_puzzle->sequence_number = idx_random_puzzle;
Fl_PNG_Image *img = LoadPictureParts(tmp_puzzle);
switch (img->fail()) {
case Fl_Image::ERR_NO_IMAGE:
case Fl_Image::ERR_FILE_ACCESS:
fl_alert("%s: %s", tmp_puzzle->path.c_str(), strerror(errno));
exit(1);
case Fl_Image::ERR_FORMAT:
fl_alert("couldn't decode image");
exit(1);
}
tmp_puzzle->image(img);
tmp_puzzle->stored_img_pointer = img;
tmp_puzzle->callback(press_button_callback, this);
puzzles.push_back(std::move(tmp_puzzle));
}
ResetFreePuzzles();
/*
* Checking image shuffling
*/
bool shuffled_img = false;
for(int i = 0; i < puzzle_pieces-1; ++i)
if(puzzles[i]->sequence_number != i) {
shuffled_img = true;
break;
}
if(!shuffled_img)
NextUntestedPuzzles();
win->end();
}
bool GameParams::IsSolvability()
{
int counter = 0;
for(size_t i = 0; i < puzzles.size(); ++i)
for(size_t j = i+1; j < puzzles.size(); ++j)
if(puzzles[i]->sequence_number > puzzles[j]->sequence_number)
++counter;
return counter % 2 == 0;
}
void GameParams::CreateNewPuzzles()
{
do {
NextUntestedPuzzles();
} while(!IsSolvability());
}
void GameParams::SelectRandomPicture()
{
std::filesystem::path res_path = std::string("resources");
bool res_path_exists = std::filesystem::exists(res_path);
if(res_path_exists) {
std::vector<std::string> choices;
for (const auto& entry : std::filesystem::directory_iterator("resources"))
choices.emplace_back(entry.path().string());
choices.emplace_back("standard");
std::random_device rd;
std::mt19937 g(rd());
std::shuffle(choices.begin(), choices.end(), g);
if(choices[0] == "standard")
cur_directory.clear();
else {
cur_directory = choices[0];
#if defined(_WIN32)
cur_directory.append("\\");
#else
cur_directory.append("/");
#endif
}
}
}
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