113 lines
3.0 KiB
C++
113 lines
3.0 KiB
C++
#include <iostream>
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#include "SDL2/SDL.h"
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#define SCREEN_X 100
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#define SCREEN_Y 100
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#define SCREEN_WIDTH 640
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#define SCREEN_HEIGHT 480
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#define PAD_WIDTH 200
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#define PAD_HEIGHT 20
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#define KEY_MOVE_STEP 5
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#define BG_COLOR 0, 0, 0, 255
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#define PAD_COLOR 0, 0, 255, 255
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int main(int argc, char const *argv[]) {
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if (SDL_Init(SDL_INIT_VIDEO) != 0) {
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std::cout << "SDL_Init Error: " << SDL_GetError() << std::endl;
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return 1;
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}
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SDL_Window *window = SDL_CreateWindow(
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"Breakout",
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SCREEN_X, SCREEN_Y,
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SCREEN_WIDTH, SCREEN_HEIGHT,
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SDL_WINDOW_SHOWN
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);
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if (window == nullptr) {
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std::cout << "SDL_CreateWindow Error: " << SDL_GetError() << std::endl;
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SDL_Quit();
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return 1;
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}
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SDL_Renderer *renderer = SDL_CreateRenderer(
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window, // Window
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-1, // Video driver. -1 means "any compatible"
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SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC // Options
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);
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if (renderer == nullptr) {
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SDL_DestroyWindow(window);
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std::cout << "SDL_CreateRenderer Error: " << SDL_GetError() << std::endl;
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SDL_Quit();
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return 1;
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}
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// Setting background color to black
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SDL_SetRenderDrawColor(renderer, BG_COLOR);
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SDL_RenderClear(renderer);
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// Creat a rect at pos ( 50, 50 ) that's 50 pixels wide and 50 pixels high.
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SDL_Rect platform = {
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.x = (SCREEN_WIDTH - PAD_WIDTH) / 2,
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.y = (SCREEN_HEIGHT - PAD_HEIGHT),
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.w = PAD_WIDTH,
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.h = PAD_HEIGHT
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};
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// Set render color to blue ( rect will be rendered in this color )
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SDL_SetRenderDrawColor(renderer, PAD_COLOR);
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// Render rect
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SDL_RenderFillRect(renderer, &platform);
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// Render the rect to the screen
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SDL_RenderPresent(renderer);
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SDL_Event e;
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bool quit = false;
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while (!quit) {
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while (SDL_PollEvent(&e)) {
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if (e.type == SDL_QUIT) {
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quit = true;
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}
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if (e.type == SDL_KEYDOWN) {
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switch (e.key.keysym.sym) {
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case SDLK_q:
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quit = true;
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break;
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case SDLK_LEFT:
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platform.x -= KEY_MOVE_STEP;
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break;
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case SDLK_RIGHT:
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platform.x += KEY_MOVE_STEP;
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break;
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}
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}
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if (e.type == SDL_MOUSEMOTION) {
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platform.x = e.motion.x - PAD_WIDTH / 2;
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}
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if (platform.x < 0) {
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platform.x = 0;
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} else if (platform.x > SCREEN_WIDTH - PAD_WIDTH) {
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platform.x = SCREEN_WIDTH - PAD_WIDTH;
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}
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}
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// Re-rendering
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SDL_SetRenderDrawColor(renderer, BG_COLOR);
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SDL_RenderClear(renderer);
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SDL_SetRenderDrawColor(renderer, PAD_COLOR);
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SDL_RenderFillRect(renderer, &platform);
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SDL_RenderPresent(renderer);
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SDL_Delay(1);
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}
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SDL_DestroyWindow(window);
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SDL_Quit();
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std::cout << "Exiting nicely" << std::endl;
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return 0;
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}
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