Render grid via sdl for TTT

TTT/.gitignore

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TTT/.vscode/settings.json

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+{
+    "files.associations": {
+        "xstring": "cpp",
+        "xutility": "cpp",
+        "map": "cpp",
+        "vector": "cpp"
+    }
+}

TTT/.vscode/tasks.json

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+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: cl.exe build active file",
+            "command": "cl.exe",
+            "args": [
+                "/Zi",
+                "/EHsc",
+                "/nologo",
+                "/Fe${fileDirname}\\${fileBasenameNoExtension}.exe",
+                "${file}"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$msCompile"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "Task generated by Debugger."
+        }
+    ],
+    "version": "2.0.0"
+}

TTT/App.cpp

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+#include "App.hh"
+
+namespace TTT
+{
+
+App::App(int width, int height) : 
+    m_WindowHeight(height), m_WindowWidth(width), m_Close(0), m_GridHeight(5), m_GridWidth(5)
+{
+    // returns zero on success else non-zero
+    if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
+        SDL_LogCritical(0,"error initializing SDL: %s\n", SDL_GetError());
+    }
+    m_Window = SDL_CreateWindow("Tic-Tac-Toe", // creates a window
+                                       SDL_WINDOWPOS_CENTERED,
+                                       SDL_WINDOWPOS_CENTERED,
+                                       m_WindowHeight, m_WindowHeight, 0);
+
+    // Initialize grid. Look at this transposed.
+    auto pair = std::pair<SDL_Rect, TEXTURE>();
+    pair.second = WALL;
+    m_Grid = {
+        { pair, pair, pair, pair, pair },
+        { pair, pair, pair, pair, pair },
+        { pair, pair, pair, pair, pair },
+        { pair, pair, pair, pair, pair },
+        { pair, pair, pair, pair, pair }
+    };
+
+    m_Grid[0][0].second = NONE;
+
+
+    // triggers the program that controls
+    // your graphics hardware and sets flags
+    Uint32 render_flags = SDL_RENDERER_ACCELERATED;
+ 
+    // creates a renderer to render our images
+    m_Renderer = SDL_CreateRenderer(m_Window, -1, render_flags);
+ 
+    // please provide a path for your image
+    SDL_Surface* wall_surface = IMG_Load("./res/TTT_WALL.png");
+    SDL_Surface* symbol_x_surface = IMG_Load("./res/SYMBOL_X.png");
+    SDL_Surface* symbol_o_surface = IMG_Load("./res/SYMBOL_O.png");
+ 
+    // loads image to our graphics hardware memory.
+    m_Textures[TTT::WALL] = SDL_CreateTextureFromSurface(m_Renderer, wall_surface);
+    m_Textures[TTT::SYMBOL_X] = SDL_CreateTextureFromSurface(m_Renderer, symbol_x_surface);
+    m_Textures[TTT::SYMBOL_O] = SDL_CreateTextureFromSurface(m_Renderer, symbol_o_surface);
+    
+    // clears surfaces from main-memory.
+    SDL_FreeSurface(wall_surface);
+    SDL_FreeSurface(symbol_x_surface);
+    SDL_FreeSurface(symbol_o_surface);
+ 
+    // let us control our image position
+    // so that we can move it with our keyboard.
+    SDL_Rect dest;
+    SDL_Rect dest2;
+    // connects our texture with dest to control position
+    SDL_QueryTexture(m_Textures[TTT::WALL], NULL, NULL, &dest.w, &dest.h);
+    SDL_QueryTexture(m_Textures[TTT::SYMBOL_O], NULL, NULL, &dest2.w, &dest2.h);
+ 
+    // adjust height and width of our image box.
+    // dest.w /= 6;
+    // dest.h /= 6;
+ 
+    // sets initial x-position of object
+    dest.x = (m_WindowWidth - dest.w) / 2;
+    dest2.x = (m_WindowWidth - dest2.w) / 2;
+    // sets initial y-position of object
+    dest.y = (m_WindowHeight - dest.h) / 2;
+    dest2.y = (m_WindowHeight - dest2.h) / 2;
+ 
+    DrawGrid();
+
+    // speed of box
+    int speed = 300;
+ 
+    // animation loop
+    while (!m_Close) {
+        SDL_Event event;
+ 
+        // Events management
+        while (SDL_PollEvent(&event)) {
+            switch (event.type) {
+ 
+            case SDL_QUIT:
+                // handling of close button
+                m_Close = 1;
+                break;
+            case SDL_MOUSEBUTTONDOWN:
+                switch (event.button.button)
+                {
+                case SDL_BUTTON(SDL_BUTTON_LEFT):
+                    SDL_LogInfo(0, "LEFT CLICK (%d, %d)\n", event.motion.x, event.motion.y);
+                    break;
+                default:
+                    break;
+                }
+                break;
+            case SDL_KEYDOWN:
+                // keyboard API for key pressed
+                switch (event.key.keysym.scancode) {
+                case SDL_SCANCODE_ESCAPE:
+                    m_Close = 1;
+                    break;
+                case SDL_SCANCODE_W:
+                case SDL_SCANCODE_UP:
+                    dest.y -= speed / 30;
+                    break;
+                case SDL_SCANCODE_A:
+                case SDL_SCANCODE_LEFT:
+                    dest.x -= speed / 30;
+                    break;
+                case SDL_SCANCODE_S:
+                case SDL_SCANCODE_DOWN:
+                    dest.y += speed / 30;
+                    break;
+                case SDL_SCANCODE_D:
+                case SDL_SCANCODE_RIGHT:
+                    dest.x += speed / 30;
+                    break;
+                default:
+                    break;
+                }
+            }
+        }
+ 
+        // right boundary
+        if (dest.x + dest.w > 1000)
+            dest.x = 1000 - dest.w;
+ 
+        // left boundary
+        if (dest.x < 0)
+            dest.x = 0;
+ 
+        // bottom boundary
+        if (dest.y + dest.h > 1000)
+            dest.y = 1000 - dest.h;
+ 
+        // upper boundary
+        if (dest.y < 0)
+            dest.y = 0;
+ 
+        // clears the screen
+        SDL_RenderClear(m_Renderer);
+        SDL_RenderCopy(m_Renderer, m_Textures[TTT::WALL], NULL, &dest);
+        SDL_RenderCopy(m_Renderer, m_Textures[TTT::SYMBOL_O], NULL, &dest2);
+        GridRenderCopy();
+ 
+        // triggers the double buffers
+        // for multiple rendering
+        SDL_RenderPresent(m_Renderer);
+ 
+        // calculates to 60 fps
+        SDL_Delay(1000 / 60);
+    }
+ 
+    // destroy texture
+    SDL_DestroyTexture(m_Textures[TTT::SYMBOL_O]);
+}
+
+void App::DrawToGridCell(TEXTURE textureId, int x, int y)
+{
+
+}
+
+void App::DrawGrid()
+{
+    int CELL_WIDTH = 64;
+    int CELL_HEIGHT = 64;
+    
+
+    for (int i = 0; i <= m_GridWidth - 1; ++i)
+    {
+        for (int j = 0; j <= m_GridHeight - 1; ++j)
+        {
+            // connects our texture with dest to control position
+            SDL_QueryTexture(
+                m_Textures[m_Grid[i][j].second], NULL, NULL, 
+                &m_Grid[i][j].first.w, &m_Grid[i][j].first.h);
+
+            // m_Grid[i][j].first.x = (m_WindowWidth - m_Grid[i][j].first.w) / 2;
+            // m_Grid[i][j].first.y = (m_WindowHeight - m_Grid[i][j].first.h) / 2;
+
+            m_Grid[i][j].first.w = CELL_WIDTH;
+            m_Grid[i][j].first.h = CELL_HEIGHT;
+            m_Grid[i][j].first.x = m_Grid[i][j].first.w * i;
+            m_Grid[i][j].first.y = m_Grid[i][j].first.h * j;
+        }   
+    }
+    
+}
+
+void App::UpdateGridHover(int x, int y)
+{
+}
+
+void App::GridRenderCopy()
+{
+    for (int i = 0; i <= m_GridWidth - 1; ++i)
+    {
+        for (int j = 0; j <= m_GridHeight - 1; ++j)
+        {
+            SDL_RenderCopy(m_Renderer, m_Textures[m_Grid[i][j].second], NULL, &m_Grid[i][j].first);
+        }   
+    }    
+}
+
+App::~App()
+{
+    
+    // destroy renderer
+    SDL_DestroyRenderer(m_Renderer);
+    // destroy window
+    SDL_DestroyWindow(m_Window);
+    // close SDL
+    SDL_Quit();
+}
+
+
+} // namespace TTT

TTT/App.hh

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_timer.h>
+#include <SDL2/SDL2_gfxPrimitives.h>
+
+#include <map>
+#include <vector>
+
+namespace TTT
+{
+
+enum TEXTURE {
+    NONE,
+    WALL,
+    SYMBOL_X,
+    SYMBOL_O
+};
+
+class App
+{
+private:        
+    int                                                             m_WindowWidth;
+    int                                                             m_WindowHeight;
+    int                                                             m_Close;
+    int                                                             m_GridHeight;
+    int                                                             m_GridWidth;
+    SDL_Window*                                                     m_Window;
+    SDL_Renderer*                                                   m_Renderer;
+    SDL_Surface*                                                    m_Surface;
+    std::map<TEXTURE,SDL_Texture*>                                  m_Textures;
+    std::vector<std::vector<std::pair<SDL_Rect, TEXTURE>>>          m_Grid;
+    
+public:
+    App(int width, int height);
+    void DrawToGridCell(TEXTURE textureId, int x, int y);
+    void DrawGrid();
+    void UpdateGridHover(int x, int y);
+    void GridRenderCopy();
+    ~App();
+};
+
+} // namespace TTT
+
+
+

TTT/CMakeLists.txt

@@ -0,0 +1,23 @@
+cmake_minimum_required(VERSION 3.0.0)
+project(Tic-Tac-Toe VERSION 0.1.0)
+
+find_package(SDL2 CONFIG REQUIRED)
+find_package(SDL2_image CONFIG REQUIRED)
+find_package(sdl2-gfx CONFIG REQUIRED)
+    
+add_executable(Tic-Tac-Toe main.cpp App.cpp App.hh)
+
+target_link_libraries(Tic-Tac-Toe
+    PRIVATE
+    $<TARGET_NAME_IF_EXISTS:SDL2::SDL2main>
+    $<IF:$<TARGET_EXISTS:SDL2::SDL2>,SDL2::SDL2,SDL2::SDL2-static>
+)
+target_link_libraries(Tic-Tac-Toe 
+    PRIVATE 
+    $<IF:$<TARGET_EXISTS:SDL2_image::SDL2_image>,SDL2_image::SDL2_image,SDL2_image::SDL2_image-static>
+)
+target_link_libraries(Tic-Tac-Toe PRIVATE SDL2::SDL2_gfx)
+
+set(CPACK_PROJECT_NAME ${PROJECT_NAME})
+set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
+include(CPack)

TTT/main.cpp

@@ -0,0 +1,11 @@
+#include "App.hh"
+
+using namespace TTT;
+
+int main(int argc, char *argv[])
+{
+
+    App app = App(1000, 1000);
+ 
+    return 0;
+}