sdl-2 相关问题

有关Simple DirectMedia Layer 2（SDL2）的问题和问题。如果您使用的是SDL 1.2，请使用标签[sdl-1.2]。如果您一般在质疑库，请使用标签[sdl]。

我正在使用 SDL2 和 SDL_TEXTUREACCESS_STREAMING，而不使用 OpenGL，我想将一些纹理从我的函数传输/组合到我的主循环。因此，我决定将我的访问类型从 STREAMING 更改为

c++ sdl-2 sdl-ttf

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无法打开源文件“SDL2/SDL.h”Microsoft Visual Studio

帮助！我安装了 SDL2 ，我在它的位置设置了所有方向并添加了 lib 但它说无法打开源文件“SDL2/SDL.h”我做了我能做的请帮忙 #包括帮助！我安装了 SDL2 ，我在它的位置设置了所有方向并添加了 lib 但它说无法打开源文件“SDL2/SDL.h”我做了我能做的请帮忙 #include <SDL2/SDL.h> 我安装了 SLD2 并在 Microsoft vs 中准备了所有方向，但仍然没有相同的问题所以是的，我修好了我忘了/设置方向所以 SDL2/SDL.h 意味着头文件在名为 SDL2 的文件夹中，而 SDL.h 头文件在 include 文件夹中，所以 SDL.h 是直接附加的，我所做的就是从头文件中删除 SDL2/ #include <*SDL2/*SDL.h>

c++ visual-studio visual-c++ sdl sdl-2

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SDL 窗口在尝试关闭窗口时无响应

我尝试了在 C 中打开一个简单窗口的代码：主程序： #包括 #undef 主要 #包括 #包括 int main(int argc, char* argv[]) {...

c sdl sdl-2

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SDL不会画矩形

绘制函数在 while 循环内的 for 循环中，就像 while(!windownotclose){ for(auto& e:somevecs){//code}} 一样。我在 visual studio 中设置了一个断点，看看 e 是否为 null 并且...

c++ graphics sdl-2

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分配 2 个向量 SDL_Rect c++ 导致垃圾值

在 Tilemap 类中，我使用矢量来保存每个 Tilemap 对象的平台位置和大小。在文件 Tilemap_data 中，我声明了我所有的 Tilemap 对象，包括 vector 在 Tilemap 类中，我使用矢量来保存每个 Tilemap 对象的平台位置和大小。在文件 Tilemap_data 中，我声明了我所有的 Tilemap 对象，包括它们附带的 vector。我有一个 present_tilemap_pos_x 变量来检查 Tilemap 对象是否在屏幕之外。在main.cpp中，如果程序运行正常，当正在显示的Tilemap对象（符号为“present_tilemap”）跑出屏幕，下一个Tilemap对象（符号为“next_tilemap”）正在显示时，程序会发生变化，使得present_tilemap 取 next_tilemap 的值，next_tilemap 的数据将从包含 SDL_Rect 对象的向量数组中随机获取。（在我上面提到的 Tilemap 对象的数据集中）。然而，虽然为 next_tilemap 分配新值工作正常，但为 present_tilemap 对象分配值是错误的，因为向量的 x、y 和 h 值分配正确，而 w 值是垃圾值。我将在这里发布我的代码，为了简化它，我将删除所有与我在问题中提出的问题无关的不相关部分。为了方便起见，我还会提供一个日志文件，记录每次迭代后的程序。文件 Tilemap.hpp: #pragma once #ifndef Tilemap_hpp #define Tilemap_hpp #include <iostream> #include <vector> #include <SDL2/SDL.h> using namespace std; class Tilemap { private: int tilemap_index; int tilemap[18][32]; int number_of_platform = 0; vector <SDL_Rect> platform_rects; public: Tilemap(); Tilemap(int index, int tilemap[18][32], int number, SDL_Rect platform[]); ~Tilemap(); int get_tilemap_index(); int get_tilemap(int x, int y); void set_tilemap_index(int index); void set_tilemap(int x, int y, int value); int get_number_of_platform(); void set_number_of_platform(int number_of_platform); void set_platform_rects(std::vector <SDL_Rect> platform_rects); std::vector <SDL_Rect> get_platform_rects() { return platform_rects; } vector <SDL_Rect> update_platform_rects(Tilemap& tilemap, int tilemap_pos_x); void create_platform_rects(int x, int y, int width, int height); void update_platform_rects(int tilemap_pos_x); }; #endif /* Tilemap_hpp */ 文件 Tilemap.cpp： #include "Tilemap.hpp" Tilemap::Tilemap() { } Tilemap::Tilemap(int index, int tilemap[18][32], int number, SDL_Rect platform[]) { tilemap_index = index; for (int i = 0; i < 18; i++) { for (int j = 0; j < 32; j++) { this->tilemap[i][j] = tilemap[i][j]; } } number_of_platform = number; for (int i = 0; i < number; i++) { platform_rects.push_back(platform[i]); } } Tilemap::~Tilemap() { } int Tilemap::get_tilemap_index() { return tilemap_index; } int Tilemap::get_tilemap(int x, int y) { return tilemap[x][y]; } void Tilemap::set_tilemap_index(int index) { tilemap_index = index; } void Tilemap::set_tilemap(int x, int y, int value) { tilemap[x][y] = value; } void Tilemap::create_platform_rects(int x, int y, int width, int height) { SDL_Rect platform_rect; platform_rect.x = x; platform_rect.y = y; platform_rect.w = width; platform_rect.h = height; platform_rects.push_back(platform_rect); } void Tilemap::update_platform_rects(int tilemap_pos_x) { // di chuyển các platform sang trái với tốc độ speed for (int i = 0; i < platform_rects.size(); i++) { platform_rects[i].x += tilemap_pos_x; } // xóa các platform ở phía bên trái màn hình while (!platform_rects.empty() && platform_rects[0].x + platform_rects[0].w < 0) { platform_rects.erase(platform_rects.begin()); } } int Tilemap::get_number_of_platform() { return number_of_platform; } void Tilemap::set_number_of_platform(int number_of_platform) { this->number_of_platform = number_of_platform; } void Tilemap::set_platform_rects(std::vector<SDL_Rect> platform_rects) { this->platform_rects = platform_rects; } vector <SDL_Rect> Tilemap::update_platform_rects(Tilemap& tilemap, int tilemap_pos_x) { for (int i = 0; i < platform_rects.size(); i++) { platform_rects[i].x += tilemap_pos_x; } return platform_rects; } 文件 Tilemap_data.hpp： ... SDL_Rect def_platform_0 = {240, 400, 1000, 80}; SDL_Rect array_of_platforms_0[1] = {def_platform_0}; Tilemap Default_tilemap(0, tile_map_default, 1, array_of_platforms_0); SDL_Rect tilemap1_platform_1 = {0, 280, 280, 40}; SDL_Rect tilemap1_platform_2 = {280, 240, 320, 40}; SDL_Rect tilemap1_platform_3 = {600, 360, 120, 40}; SDL_Rect tilemap1_platform_4 = {720, 560, 120, 40}; SDL_Rect tilemap1_platform_5 = {840, 480, 200, 40}; SDL_Rect tilemap1_platform_6 = {1040, 400, 240, 40}; SDL_Rect array_of_platforms_1[6] = {tilemap1_platform_1, tilemap1_platform_2, tilemap1_platform_3, tilemap1_platform_4, tilemap1_platform_5, tilemap1_platform_6}; Tilemap Tilemap_1(1, tile_map_1, 6, array_of_platforms_1) (16 more... To simplify, all 16 next Tilemap objects are copies of the Tilemap_1 object.) 文件main.cpp： // Using SDL and standard IO #include "Library.hpp" #include <fstream> // Screen dimension constants const int SCREEN_WIDTH = 1280; const int SCREEN_HEIGHT = 720; Game *game = nullptr; Player *player = nullptr; int main(int argc, char *args[]) { ofstream outfile; outfile.open("log.txt"); int const FPS = 60; int const frameDelay = 1000 / FPS; player = new Player(320, 0, 1, -10, 0.5, 70, 90, false, false); Texture_box player_texture(0, 0, player->get_width(), player->get_height(), player->get_x(), player->get_y(), player->get_width(), player->get_height()); Texture_box background(0, 0, 1280, 720, 0, 0, 1280, 720); Texture_box next_background(0, 0, 1280, 720, 1280, 0, 1280, 720); Texture_box sky(0, 0, 1280, 720, 0, 0, 1280, 720); Texture_box plains(0, 0, 1280, 720, 0, 0, 1280, 720); Texture_box next_plains(0, 0, 1280, 720, 1280, 0, 1280, 720); Texture_box mountain(0, 0, 1280, 720, 0, 0, 1280, 720); Texture_box next_mountain(0, 0, 1280, 720, 1280, 0, 1280, 720); Texture_box cloud(0, 0, 1280, 720, 0, 0, 1280, 720); Texture_box next_cloud(0, 0, 1280, 720, 1280, 0, 1280, 720); Texture_box cloud_front(0, 0, 1280, 720, 0, 0, 1280, 720); Texture_box next_cloud_front(0, 0, 1280, 720, 1280, 0, 1280, 720); Texture_box cloud_behind(0, 0, 1280, 720, 0, 0, 1280, 720); Texture_box next_cloud_behind(0, 0, 1280, 720, 1280, 0, 1280, 720); Uint32 frameStart; int frameTime; game = new Game(); game->init("Sky Runner", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, SCREEN_WIDTH, SCREEN_HEIGHT, false); SDL_Texture *texture[50]; enum texture_type { BACKGROUND_SKY, BACKGROUND_MOUNTAIN, BACKGROUND_PLAINS, BACKGROUND_CLOUD, BACKGROUND_CLOUD_BEHIND, BACKGROUND_CLOUD_FRONT, CHARACTER, MENU, NEW_GAME, INSTRUCTION, SETTING, QUIT, INSTRUCTION_MENU, }; game->loadTexture(texture[BACKGROUND_SKY], game->getRenderer(), "Image/Background/Sky.png"); game->loadTexture(texture[BACKGROUND_MOUNTAIN], game->getRenderer(), "Image/Background/mountain.png"); game->loadTexture(texture[BACKGROUND_PLAINS], game->getRenderer(), "Image/Background/plains_ground.png"); game->loadTexture(texture[BACKGROUND_CLOUD], game->getRenderer(), "Image/Background/cloud_1.png"); game->loadTexture(texture[BACKGROUND_CLOUD_BEHIND], game->getRenderer(), "Image/Background/cloud_behind.png"); game->loadTexture(texture[BACKGROUND_CLOUD_FRONT], game->getRenderer(), "Image/Background/cloud_front.png"); game->loadTexture(texture[CHARACTER], game->getRenderer(), "Image/Character/Character.png"); game->loadTexture(texture[MENU], game->getRenderer(), "Image/Menu/Menu/menu.png"); game->loadTexture(texture[NEW_GAME], game->getRenderer(), "Image/Menu/Menu/selected_start_button.png"); game->loadTexture(texture[INSTRUCTION], game->getRenderer(), "Image/Menu/Menu/selected_instruction_button.png"); game->loadTexture(texture[SETTING], game->getRenderer(), "Image/Menu/Menu/selected_setting_button.png"); game->loadTexture(texture[QUIT], game->getRenderer(), "Image/Menu/Menu/selected_quit_button.png"); Texture_box tilemap_texture(0, 0, 40, 40, 0, 0, 40, 40); SDL_Texture *pT; game->loadTexture(pT, game->getRenderer(), "Image/Background/test.png"); int present_tilemap_pos_x = 0; int next_tilemap_pos_x = 1280; const int speed = 5; bool is_first_tilemap = true; int present_tilemap_index = 0; int next_tilemap_index = game->random_tilemap(18, game->getScore()); vector<SDL_Rect> present_platform_rects = platform_rects[0]; vector<SDL_Rect> next_platform_rects = platform_rects[next_tilemap_index]; Tilemap present_tilemap = array_of_tilemap[present_tilemap_index]; Tilemap next_tilemap = array_of_tilemap[next_tilemap_index]; present_platform_rects = array_of_tilemap[present_tilemap_index].update_platform_rects(present_tilemap, present_tilemap_pos_x); next_platform_rects = next_tilemap.update_platform_rects(next_tilemap, next_tilemap_pos_x); int count = 0; game->render(game->getRenderer(), texture[BACKGROUND_SKY], sky.get_sourceRect(), sky.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD], cloud.get_sourceRect(), cloud.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD_BEHIND], cloud_behind.get_sourceRect(), cloud_behind.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD_FRONT], cloud_front.get_sourceRect(), cloud_front.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_MOUNTAIN], mountain.get_sourceRect(), mountain.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_PLAINS], plains.get_sourceRect(), plains.get_destinationRect()); game->render(game->getRenderer(), texture[MENU], main_menu_screen_box.get_sourceRect(), main_menu_screen_box.get_destinationRect()); SDL_RenderPresent(game->getRenderer()); while (game->menu()) { SDL_Event event; SDL_PollEvent(&event); switch (event.type) { case SDL_QUIT: game->setRunning(false); break; case SDL_MOUSEMOTION: int mouseX, mouseY; SDL_GetMouseState(&mouseX, &mouseY); if (isMouseInside(mouseX, mouseY, new_game_button)) { game->render(game->getRenderer(), texture[NEW_GAME], main_menu_screen_box.get_sourceRect(), main_menu_screen_box.get_destinationRect()); SDL_RenderPresent(game->getRenderer()); } else if (isMouseInside(mouseX, mouseY, quit_button)) { game->render(game->getRenderer(), texture[QUIT], main_menu_screen_box.get_sourceRect(), main_menu_screen_box.get_destinationRect()); SDL_RenderPresent(game->getRenderer()); } else if (isMouseInside(mouseX, mouseY, setting_button)) { game->render(game->getRenderer(), texture[SETTING], main_menu_screen_box.get_sourceRect(), main_menu_screen_box.get_destinationRect()); SDL_RenderPresent(game->getRenderer()); } else if (isMouseInside(mouseX, mouseY, instruction_button)) { game->render(game->getRenderer(), texture[INSTRUCTION], main_menu_screen_box.get_sourceRect(), main_menu_screen_box.get_destinationRect()); SDL_RenderPresent(game->getRenderer()); } else { game->render(game->getRenderer(), texture[MENU], main_menu_screen_box.get_sourceRect(), main_menu_screen_box.get_destinationRect()); SDL_RenderPresent(game->getRenderer()); } break; case SDL_MOUSEBUTTONDOWN: // Kiểm tra xem người dùng đã click chuột vào nút nào SDL_GetMouseState(&mouseX, &mouseY); if (isMouseInside(mouseX, mouseY, new_game_button)) { game->setPlaying(true); game->setMenu(false); } if (isMouseInside(mouseX, mouseY, quit_button)) { game->setMenu(false); game->setRunning(false); } break; } } while (game->playing()) { frameStart = SDL_GetTicks64(); SDL_Event event; SDL_PollEvent(&event); switch (event.type) { case SDL_QUIT: game->setPlaying(false); game->setRunning(false); break; case SDL_KEYDOWN: switch (event.key.keysym.sym) { case SDLK_ESCAPE: game->setPlaying(false); game->setRunning(false); break; case SDLK_UP: player->set_jumping(true); break; case SDLK_RIGHT: break; } default: count++; game->setScore(count / 10); outfile << "Number of key event: " << count << endl; outfile << "Your score: " << game->getScore() << endl; present_platform_rects = present_tilemap.update_platform_rects(present_tilemap, -speed); next_platform_rects = next_tilemap.update_platform_rects(next_tilemap, -speed); player->player_jumping(*player); player->set_falling(player->is_falling(*player, present_platform_rects, next_platform_rects)); player->player_falling(*player); player_texture.set_destinationRect(player->get_x(), player->get_y(), player->get_width(), player->get_height()); present_tilemap_pos_x -= speed; next_tilemap_pos_x -= speed; break; } /* game->Moving_background(texture[BACKGROUND_CLOUD], cloud, next_cloud, game->getRenderer(), speed - 4); game->Moving_background(texture[BACKGROUND_CLOUD_BEHIND], cloud_behind, next_cloud_behind, game->getRenderer(), speed - 3); game->Moving_background(texture[BACKGROUND_CLOUD_FRONT], cloud_front, next_cloud_front, game->getRenderer(), speed - 2); game->Moving_background(texture[BACKGROUND_MOUNTAIN], mountain, next_mountain, game->getRenderer(), speed - 1); game->Moving_background(texture[BACKGROUND_PLAINS], plains, next_plains, game->getRenderer(), speed); */ // Background render game->render(game->getRenderer(), texture[BACKGROUND_SKY], sky.get_sourceRect(), sky.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD], cloud.get_sourceRect(), cloud.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD], next_cloud.get_sourceRect(), next_cloud.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD_BEHIND], cloud_behind.get_sourceRect(), cloud_behind.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD_BEHIND], next_cloud_behind.get_sourceRect(), next_cloud_behind.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD_FRONT], cloud_front.get_sourceRect(), cloud_front.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_CLOUD_FRONT], next_cloud_front.get_sourceRect(), next_cloud_front.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_MOUNTAIN], mountain.get_sourceRect(), mountain.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_MOUNTAIN], next_mountain.get_sourceRect(), next_mountain.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_PLAINS], plains.get_sourceRect(), plains.get_destinationRect()); game->render(game->getRenderer(), texture[BACKGROUND_PLAINS], next_plains.get_sourceRect(), next_plains.get_destinationRect()); game->render(game->getRenderer(), texture[CHARACTER], player_texture.get_sourceRect(), player_texture.get_destinationRect()); // Tilemap render if (is_first_tilemap || present_tilemap_pos_x <= -1280) { if (is_first_tilemap) { game->infinite_tilemap(array_of_tilemap, 18, tilemap_texture, pT, 0, next_tilemap_index, present_tilemap_pos_x, next_tilemap_pos_x, speed); // present_platform_rects = platform_rects[present_tilemap_index]; if (present_tilemap_pos_x == -1280) { is_first_tilemap = false; } } else { present_tilemap_index = next_tilemap_index; next_tilemap_index = game->random_tilemap(18, game->getScore()); present_tilemap = array_of_tilemap[present_tilemap_index]; next_tilemap = array_of_tilemap[next_tilemap_index]; present_platform_rects.clear(); next_platform_rects.clear(); present_platform_rects.assign(platform_rects[present_tilemap_index].begin(), platform_rects[present_tilemap_index].end()); next_platform_rects = platform_rects[next_tilemap_index]; present_tilemap_pos_x = 0; next_tilemap_pos_x = 1280; present_platform_rects = present_tilemap.update_platform_rects(present_tilemap, present_tilemap_pos_x); next_platform_rects = next_tilemap.update_platform_rects(next_tilemap, next_tilemap_pos_x); } } game->drawing_tilemap(array_of_tilemap[present_tilemap_index], tilemap_texture, pT, present_tilemap_pos_x); game->drawing_tilemap(array_of_tilemap[next_tilemap_index], tilemap_texture, pT, next_tilemap_pos_x); SDL_RenderPresent(game->getRenderer()); frameTime = SDL_GetTicks64() - frameStart; if (frameDelay > frameTime) { SDL_Delay(frameDelay - frameTime); } game->death_message(*player); } game->clean(); return 0; } 文件log.txt文件： Game start! --------------------------------------------- Number of key event: 0 Present_tilemap_index: [0] platform[0]_rect: 240 400 1000 80 Next_tilemap_index: [2] next_platform[0]_rect: 1280 280 280 40 next_platform[1]_rect: 1560 240 320 40 next_platform[2]_rect: 1880 360 120 40 next_platform[3]_rect: 2000 560 120 40 next_platform[4]_rect: 2120 480 200 40 next_platform[5]_rect: 2320 400 240 40 --------------------------------------------- Number of key event: 1 Present_tilemap_index: [0] platform[0]_rect: 235 400 1000 80 Next_tilemap_index: [2] next_platform[0]_rect: 1275 280 280 40 next_platform[1]_rect: 1555 240 320 40 next_platform[2]_rect: 1875 360 120 40 next_platform[3]_rect: 1995 560 120 40 next_platform[4]_rect: 2115 480 200 40 next_platform[5]_rect: 2315 400 240 40 --------------------------------------------- Number of key event: 2 Present_tilemap_index: [0] platform[0]_rect: 230 400 1000 80 Next_tilemap_index: [2] next_platform[0]_rect: 1270 280 280 40 next_platform[1]_rect: 1550 240 320 40 next_platform[2]_rect: 1870 360 120 40 next_platform[3]_rect: 1990 560 120 40 next_platform[4]_rect: 2110 480 200 40 next_platform[5]_rect: 2310 400 240 40 --------------------------------------------- ... --------------------------------------------- Number of key event: 256 Present_tilemap_index: [0] platform[0]_rect: -1040 400 1000 80 Next_tilemap_index: [2] next_platform[0]_rect: 0 280 280 40 next_platform[1]_rect: 280 240 320 40 next_platform[2]_rect: 600 360 120 40 next_platform[3]_rect: 720 560 120 40 next_platform[4]_rect: 840 480 200 40 next_platform[5]_rect: 1040 400 240 40 --------------------------------------------- Number of key event: 257 Present_tilemap_index: [0] platform[0]_rect: -1045 400 1000 80 Next_tilemap_index: [2] next_platform[0]_rect: -5 280 280 40 next_platform[1]_rect: 275 240 320 40 next_platform[2]_rect: 595 360 120 40 next_platform[3]_rect: 715 560 120 40 next_platform[4]_rect: 835 480 200 40 next_platform[5]_rect: 1035 400 240 40 --------------------------------------------- //My note: after "keyevent 257, the condition for assigning the Tilemap objects (that I mentioned above) is satisfied. --------------------------------------------- My note 2: If it works directly, the log must be: Present_tilemap_index_after_update: [2] platform[0]_rect: 0 280 280 40 platform[1]_rect: 280 240 320 40 platform[2]_rect: 600 360 120 40 platform[3]_rect: 720 560 120 40 platform[4]_rect: 840 480 200 40 platform[5]_rect: 1040 400 240 40 --------------------------------------------- The real result: Present_tilemap_index_after_update: [2] platform[0]_rect: 0 280 1000 40 platform[1]_rect: 280 240 -131965695 40 platform[2]_rect: 600 360 -1769019472 40 platform[3]_rect: 720 560 -131310329 40 platform[4]_rect: 840 480 5111881 40 platform[5]_rect: 1040 400 -131179259 40 --------------------------------------------- Number of key event: 258 Your score: 25 Player: 320 150 70 90 Player max height: 0 Falling: 0 Jumping: 0 Present_tilemap_index: [2] platform[0]_rect: -5 280 1000 40 platform[1]_rect: 275 240 -131965695 40 platform[2]_rect: 595 360 -1769019472 40 platform[3]_rect: 715 560 -131310329 40 platform[4]_rect: 835 480 5111881 40 platform[5]_rect: 1035 400 -131179259 40 Next_tilemap_index: [13] next_platform[0]_rect: 1275 280 280 40 next_platform[1]_rect: 1555 240 320 40 next_platform[2]_rect: 1875 360 120 40 next_platform[3]_rect: 1995 560 120 40 next_platform[4]_rect: 2115 480 200 40 next_platform[5]_rect: 2315 400 240 40 --------------------------------------------- ... 我尝试了各种不同的方法，但结果还是一样。我哪里做错了？请帮我。如果您需要任何其他信息，我会提供。

c++ sdl-2

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