first draft to use SDL_ttf to display texts

Author: petitlapin

.github/workflows/c-cpp.yml

@@ -13,7 +13,7 @@ jobs:
             - name: Install Conan
               uses: turtlebrowser/get-conan@main
               with:
-                version: 2.8.1
+                version: 2.25.2
             - name: Configure conan
               run: conan profile detect
             - name: Install deps
@@ -39,7 +39,7 @@ jobs:
             - name: Get Conan
               uses: turtlebrowser/get-conan@main
               with:
-                version: 2.8.1
+                version: 2.25.2
             - name: Configure conan
               run: conan profile detect
             - name: Install deps
@@ -63,7 +63,7 @@ jobs:
             - name: Install Conan
               uses: turtlebrowser/get-conan@main
               with:
-                version: 2.8.1
+                version: 2.25.2
 
             - name: Configure conan
               run: conan profile detect

CMakeLists.txt

@@ -25,9 +25,10 @@ option(USE_CONAN
 if(USE_CONAN)
   find_package(SDL2 REQUIRED CONFIG)
   find_package(SDL2_mixer REQUIRED CONFIG)
+  find_package(SDL2_ttf REQUIRED CONFIG)
 else()
   find_package(PkgConfig REQUIRED)
-  pkg_check_modules(SDL2 REQUIRED sdl2 SDL2_mixer)
+  pkg_check_modules(SDL2 REQUIRED sdl2 SDL2_mixer SDL2_ttf)
 endif()
 
 set(CMAKE_CXX_STANDARD 11)
@@ -80,7 +81,7 @@ if(LINUX)
 endif()
 
 if(USE_CONAN)
-  target_link_libraries(${LIRI_EXECUTABLE_NAME} PRIVATE SDL2::SDL2 SDL2_mixer::SDL2_mixer)
+  target_link_libraries(${LIRI_EXECUTABLE_NAME} PRIVATE SDL2::SDL2 SDL2_mixer::SDL2_mixer sdl_ttf::sdl_ttf)
 else()
   target_include_directories(${LIRI_EXECUTABLE_NAME} PUBLIC ${SDL2_INCLUDE_DIRS})
   target_link_libraries(${LIRI_EXECUTABLE_NAME} PRIVATE ${SDL2_LINK_LIBRARIES})

conanfile.py

@@ -3,7 +3,8 @@
 
 class LiRi(ConanFile):
     settings = "os", "compiler", "build_type", "arch"
-    requires = "sdl/[~2.28.5]", "sdl_mixer/[~2.8.0]", "openssl/1.1.1w"
+    requires = "sdl/2.32.10", "sdl_mixer/2.8.1", "sdl_ttf/2.24.0", "openssl/1.1.1w"
+    tool_requires = "cmake/4.2.1"
 
     def layout(self):
         cmake_layout(self)

data/Andika-R.ttf

@@ -32,6 +32,7 @@
 #include <SDL2/SDL_video.h> // for SDL_CreateWindow, SDL_DestroyWindow
 #include <SDL2/SDL.h>
 #include <SDL2/SDL_mixer.h>
+#include <SDL2/SDL_ttf.h>
 
 #include "config.h"
 #include "preference.h"
@@ -106,6 +107,8 @@ int main(int narg, char *argv[])
     // Close the program properly when quitting
     atexit(SDL_Quit);
 
+    TTF_Init();
+
     // Set resolution
     int vOption = SDL_WINDOW_RESIZABLE;
     if (Pref.FullScreen) {
@@ -119,6 +122,8 @@ int main(int narg, char *argv[])
 
     SDL_ShowCursor(0); // Hide cursor
 
+    Ec.Init();
+
     Audio audio;
     audio.Init();
     if (LoadSprites() == false) {
@@ -197,10 +202,13 @@ int main(int narg, char *argv[])
     }
     delete[] Sprites;
 
+    Ec.Delete();
+
     Utils::SavePref();
     SDL_DestroyRenderer(sdlRenderer);
     SDL_DestroyWindow(sdlWindow);
 
+    TTF_Quit();
     Mix_Quit();
     SDL_Quit();
     return 0;

src/main.cc

@@ -122,6 +122,7 @@ eMenu Menu::SDLMain()
         Sprites[menu].Draw(400, 340, 0, Sprites[fmenu].Image[0]);
         Sprites[title].Draw(400, 65, 0, Sprites[fmenu].Image[0]);
         Sprites[copyright].Draw(400, 587, 0, Sprites[fmenu].Image[0]);
+        Ec.PrintText("Copyright é", 400, 587);
 
         DrawText(400, 229, T_play, Sprites[fmenu].Image[0]);
         AddButton(0, T_play, 400, 229);

src/menu.cc

@@ -24,10 +24,29 @@
 #include "preference.h"
 #include "sprite.h"
 #include "screen.h"
+#include "utils.h"
 
 /*** Variables globales ***/
 /**************************/
 extern Sprite *Sprites;
+extern SDL_Renderer *sdlRenderer;
+
+void Screen::Init()
+{
+    char fontPath[512];
+    strcpy(fontPath, "Andika-R.ttf");
+    Utils::GetPath(fontPath);
+
+    m_font = TTF_OpenFont(fontPath, 28);
+}
+
+void Screen::Delete()
+{
+    for (auto &texture: cachedString) {
+        SDL_DestroyTexture(texture.second);
+    }
+    TTF_CloseFont(m_font);
+}
 
 /*** Affiche un Sprite ***/
 /*************************/
@@ -42,6 +61,29 @@ void Screen::PrintCable(int dx, int dy, int fx, int fy)
     Sprites[rope].PrintRope(dx, dy, fx, fy);
 }
 
+void Screen::PrintText(const std::string &Text, int x, int y)
+{
+    SDL_Texture *texture = nullptr;
+    if (cachedString.count(Text) > 0) {
+        texture = cachedString[Text];
+    }
+    else {
+        SDL_Color fgColor = { 255, 255, 255, 255 };
+        SDL_Surface *surf = TTF_RenderText_Blended(m_font, Text.c_str(), fgColor);
+        texture = SDL_CreateTextureFromSurface(sdlRenderer, surf);
+        SDL_FreeSurface(surf);
+        cachedString.insert({ Text, texture });
+    }
+
+    SDL_Rect Position;
+
+    SDL_QueryTexture(texture, NULL, NULL, &Position.w, &Position.h);
+    Position.x = x - Position.w;
+    Position.y = y - Position.h;
+
+    SDL_RenderCopy(sdlRenderer, texture, nullptr, &Position);
+}
+
 /*** Affiche un text ***/
 /***********************/
 void Screen::PrintText(e_Sprite Text, int x, int y)

src/screen.cc

@@ -27,21 +27,32 @@
 #include "sprite.h"
 #include "preference.h"
 
+#include <SDL2/SDL_ttf.h>
+
+#include <string>
+#include <unordered_map>
+
 class Screen
 {
 public:
     Screen() = default;
     ~Screen() = default;
 
+    void Init();
+    void Delete();
+
     void PrintSprite(e_Sprite NumSpr, int Num, int x, int y); // Affiche un sprite
     void PrintCable(int dx, int dy, int fx, int fy); // Affiche un cable
+    void PrintText(const std::string &Text, int x, int y);
     void PrintText(e_Sprite Text, int x, int y); // Affiche un text à l'ecran
     void PrintOptions(int NVies, int NScore); // Affiche les options sur le coté
     void CleanSpriteAndScreen(e_Sprite NumSpriteFondEcran); // Efface l'ecran avec l'image de fond
 
 private:
-    /*** Variables ***/
+    TTF_Font *m_font;
     int Score { -1 }; // Mémorise le score affiché
+
+    std::unordered_map<std::string, SDL_Texture *> cachedString;
 };
 
 #endif