From 5a8fbddd93f3d3fb99ec3af5443963ff09977a48 Mon Sep 17 00:00:00 2001
From: NaiJi <naijiworld@protonmail.com>
Date: Sat, 19 Dec 2020 03:03:48 +0300
Subject: [PATCH] Add auto scaling

---
 application.cpp |  3 ---
 board.cpp       | 38 +++++++++++++++++++++++++++++++-------
 board.h         |  3 +++
 filepath_util.h |  4 ++--
 main.cpp        |  2 +-
 output_util.h   |  2 +-
 6 files changed, 38 insertions(+), 14 deletions(-)

diff --git a/application.cpp b/application.cpp
index 33258d6..dc1a944 100644
--- a/application.cpp
+++ b/application.cpp
@@ -2,8 +2,6 @@
 #include "application.h"
 
 // Hardcoded for now
-constexpr int SCREEN_WIDTH   = 1280;
-constexpr int SCREEN_HEIGHT  = 720;
 const sf::Time TIME_PER_SECOND = sf::seconds(1.f / 60.f);
 
 Application::Application() :
@@ -31,7 +29,6 @@ void Application::draw()
 {
     render_window.clear();
     board.draw(render_window);
-    render_window.setView(render_window.getDefaultView());
     render_window.display();
 }
 
diff --git a/board.cpp b/board.cpp
index 299090e..85c843f 100644
--- a/board.cpp
+++ b/board.cpp
@@ -164,13 +164,6 @@ bool Board::init(const std::string& path, int splitting)
     if (!global_texture.loadFromFile(path) )
         return false;
 
-    if (splitting <= 1) // If it's 1, the game is already over
-    {
-        sf::Sprite* sp = new sf::Sprite(global_texture);
-        vec_field.push_back(new Cell{0, 0, sp});
-        return true; // why not
-    }
-
     const int width  = global_texture.getSize().x;
     const int height = global_texture.getSize().y;
 
@@ -201,6 +194,37 @@ bool Board::init(const std::string& path, int splitting)
         }
     }
 
+    // SCALING //
+
+    float scaling = 0.;
+    if (width > height && width > SCREEN_WIDTH)
+        scaling = static_cast<float>(SCREEN_WIDTH) / static_cast<float>(width);
+    if (height > width && height > SCREEN_HEIGHT)
+        scaling = static_cast<float>(SCREEN_HEIGHT) / static_cast<float>(height);
+
+    if (scaling != 0.)
+    {
+        int old_side_length = Cell::side_length;
+        Cell::side_length = static_cast<int>(static_cast<float>(Cell::side_length) * scaling);
+        int shift = Cell::side_length - old_side_length;
+        float move_x = 0.f;
+        float move_y = 0.f;
+        for (Cells::size_type i = 0; i < vec_field.size(); ++i)
+        {
+            move_x = 0.f;
+            move_y = 0.f;
+            if (!(((i % cells_on_width == 0) && (i >= cells_on_width)) || i == 0))
+                move_x = static_cast<float>(shift) * static_cast<float>((i < cells_on_width) ? i : i % cells_on_width);
+            if (i >= cells_on_width)
+                move_y = static_cast<float>(shift) * static_cast<float>(i / cells_on_width);
+
+            vec_field[i]->sprite->scale(scaling, scaling);
+            vec_field[i]->sprite->move(move_x, move_y);
+        }
+
+    }
+
+
     // SHUFFLING //
 
     srand(static_cast<unsigned int>(time(nullptr)));
diff --git a/board.h b/board.h
index ff4c4b7..cd22b84 100644
--- a/board.h
+++ b/board.h
@@ -8,6 +8,9 @@
 
 using pos = std::pair<int, int>;
 
+constexpr int SCREEN_WIDTH   = 1600;
+constexpr int SCREEN_HEIGHT  = 900;
+
 enum class DIRECTION
 {
     UP,
diff --git a/filepath_util.h b/filepath_util.h
index 87f9ba6..f11f852 100644
--- a/filepath_util.h
+++ b/filepath_util.h
@@ -37,8 +37,8 @@ namespace filepath
         // Maybe user chose a specific image, not a folder
         if (std::filesystem::is_regular_file(path))
             return {EXIT_SUCCESS, path.string()};
-
-        // So... it is a folder
+                                                            // TO DO : I KNOW THIS PART IS BAD! I have never worked with ::filesystem before,
+        // So... it is a folder                                                            i will rewrite it when the prject works and is done
         // Creating a vector of everything in the given directory
         std::vector<std::tuple<std::filesystem::path, std::filesystem::file_status>> dir_items;
         std::transform(std::filesystem::directory_iterator(path), {}, std::back_inserter(dir_items), filepath::getFileInfo);
diff --git a/main.cpp b/main.cpp
index e224e35..fea8335 100644
--- a/main.cpp
+++ b/main.cpp
@@ -69,7 +69,7 @@ static std::tuple<int, int, std::string> parseInput(int argc, char **argv)
             if (std::isdigit(*argv[2]))
                 splitting = std::stoi(argv[2]);
 
-            if (splitting < 1)
+            if (splitting < 2)
                 return error(output::SPLITTING_MSG);
 
             const auto &[ret_code, ret_path] = filepath::parsePath(argc == MAX_ARGC ? argv[3] : DEFAULT_PATH);
diff --git a/output_util.h b/output_util.h
index 4577067..0088792 100644
--- a/output_util.h
+++ b/output_util.h
@@ -16,6 +16,6 @@ namespace output
                        "                by the smallest side of given source texture.\n"
                        "                Hence, if your image is square, the amount of tiles\n"
                        "                will be num * num.\n";
-    const char* SPLITTING_MSG = "-s should be given with a positive num as in [-s num].\n";
+    const char* SPLITTING_MSG = "-s should be given with a positive num >= 2 as in [-s num].\n";
     const char* IMG_FAIL_MSG  = "Couldn't load image from given path.\n";
 }