1. Assets 1. Ресурсы

2. Project Structure 2. Структура проекта

Create a project folder named ttf-pysdl3. You can keep your assets in an assets/fonts directory.

Создайте папку проекта с именем ttf-pysdl3. Вы можете хранить свои ресурсы в директории assets/fonts.

ttf-pysdl3/
├── assets/fonts/
│   └── LiberationSans-Regular.ttf
└── main.py

3. Python Implementation 3. Реализация на Python

PySDL3 relies on ctypes to interface with the underlying SDL3 C libraries. Use the following code in your main.py:

PySDL3 использует ctypes для взаимодействия с базовыми библиотеками SDL3 C. Используйте следующий код в вашем main.py:

import ctypes
import os

os.environ["SDL_MAIN_USE_CALLBACKS"] = "1"
os.environ["SDL_RENDER_DRIVER"] = "opengl"

import sdl3

renderer = ctypes.POINTER(sdl3.SDL_Renderer)()
window = ctypes.POINTER(sdl3.SDL_Window)()
textTexture = None

@sdl3.SDL_AppInit_func
def SDL_AppInit(appstate, argc, argv):
    global textTexture

    if not sdl3.SDL_Init(sdl3.SDL_INIT_VIDEO):
        sdl3.SDL_Log("Couldn't initialize SDL: %s".encode() % sdl3.SDL_GetError())
        return sdl3.SDL_APP_FAILURE

    if not sdl3.TTF_Init():
        sdl3.SDL_Log("Couldn't initialize TTF: %s".encode() % sdl3.SDL_GetError())
        return sdl3.SDL_APP_FAILURE

    if not sdl3.SDL_CreateWindowAndRenderer("PySDL3 TTF".encode(), 400, 200, 0, window, renderer):
        return sdl3.SDL_APP_FAILURE

    # Load font (Ensure the path is correct for your system)
    font = sdl3.TTF_OpenFont("assets/fonts/LiberationSans-Regular.ttf".encode(), 48)
    if not font:
        return sdl3.SDL_APP_FAILURE

    textColor = sdl3.SDL_Color(255, 255, 255, 255)
    surface = sdl3.TTF_RenderText_Blended(font, "Hello PySDL3!".encode(), 0, textColor)
    textTexture = sdl3.SDL_CreateTextureFromSurface(renderer, surface)
    sdl3.SDL_DestroySurface(surface)

    return sdl3.SDL_APP_CONTINUE

@sdl3.SDL_AppEvent_func
def SDL_AppEvent(appstate, event):
    if sdl3.SDL_DEREFERENCE(event).type == sdl3.SDL_EVENT_QUIT:
        return sdl3.SDL_APP_SUCCESS
    return sdl3.SDL_APP_CONTINUE

@sdl3.SDL_AppIterate_func
def SDL_AppIterate(appstate):
    sdl3.SDL_SetRenderDrawColor(renderer, 20, 20, 20, 255)
    sdl3.SDL_RenderClear(renderer)

    width, height = ctypes.c_float(), ctypes.c_float()
    sdl3.SDL_GetTextureSize(textTexture, ctypes.byref(width), ctypes.byref(height))
    destRect = sdl3.SDL_FRect(50.0, 75.0, width.value, height.value)
    
    sdl3.SDL_RenderTexture(renderer, textTexture, None, destRect)
    sdl3.SDL_RenderPresent(renderer)
    return sdl3.SDL_APP_CONTINUE

@sdl3.SDL_AppQuit_func
def SDL_AppQuit(appstate, result):
    global textTexture
    sdl3.SDL_DestroyTexture(textTexture)
    sdl3.TTF_Quit()

4. Running the Script 4. Запуск скрипта

Run the script via your terminal:

Запустите скрипт через терминал:

python main.py