Adding left, right, up, and down arrow keys
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7447bb52b2
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136
main.cpp
136
main.cpp
@ -1,43 +1,71 @@
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#define SDL_MAIN_HANDLED
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <SDL.h>
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#include <SDL_video.h>
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#include <SDL_image.h>
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#include <time.h>
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void draw_line(SDL_Point source, SDL_Point destination, SDL_Renderer * rend)
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{
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}
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void draw_maze(void)
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{
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}
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int main( int argc, const char* argv[] )
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{
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SDL_Renderer *renderer = NULL;
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SDL_Texture *texture = NULL;
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SDL_Surface *bitmapSurface = NULL;
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SDL_Window *win;
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SDL_Surface *image;
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SDL_Rect srcR, destR;
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Uint32 rmask, gmask, bmask, amask;
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const char name[] = "BLAH";
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const char name[] = "Game";
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if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
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{
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SDL_Log("Unable to initialize SDL: %s", SDL_GetError());
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return 1;
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}
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win = SDL_CreateWindow(name, 0, 0, 500, 300, SDL_WINDOW_RESIZABLE);
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if (win == NULL) {
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win = SDL_CreateWindow(name, 0, 0, 800, 800, SDL_WINDOW_RESIZABLE);
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if (win == NULL)
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{
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// In the case that the window could not be made...
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printf("Could not create window: %s\n", SDL_GetError());
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return 1;
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}
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renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
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SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
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SDL_Rect rectangle;
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image = SDL_GetWindowSurface(win);
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printf("Pixel Width: %d, Pixel Heigth: %d\n", image->w, image->h);
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// image = SDL_ConvertSurfaceFormat(image, SDL_PIXELFORMAT_RGB444, 0);
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//Update the surface
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Uint32 *pixels = (Uint32 *)image->pixels;
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SDL_UpdateWindowSurface( win );
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rectangle.x = 0;
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rectangle.y = 0;
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rectangle.w = 50;
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rectangle.h = 50;
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SDL_RenderFillRect(renderer, &rectangle);
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texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, 800, 800);
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srcR.h = 800;
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srcR.w = 800;
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destR.h = 800;
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destR.w = 800;
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srcR.x = 0;
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srcR.y = 0;
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destR.x = 0;
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destR.y = 0;
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bool run = true;
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while (run) {
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while (run)
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{
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clock_t start_t, end_t;
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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bool redraw = false;
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while (SDL_PollEvent(&event))
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{
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/* handle your event here */
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if (event.type == SDL_MOUSEBUTTONDOWN)
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{
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@ -47,28 +75,90 @@ int main( int argc, const char* argv[] )
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}
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else if (event.button.button == SDL_BUTTON_LEFT) // scroll up
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{
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//Update the surface
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SDL_LockSurface(image);
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for (size_t i = 0; i < (500*300); i++) {
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pixels[i] += 0xFF;
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rectangle.x += 50;
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rectangle.y += 0;
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redraw = true;
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}
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SDL_UnlockSurface(image);
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start_t = clock();
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SDL_UpdateWindowSurface(win);
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end_t = clock();
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printf("Time to draw a frame %f \n", ((double)(end_t - start_t)/(double)(CLOCKS_PER_SEC)));
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}
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else if (event.type == SDL_KEYDOWN)
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{
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if (event.key.keysym.sym == SDLK_UP)
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{
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rectangle.y -= 50;
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}
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else if (event.key.keysym.sym == SDLK_DOWN)
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{
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rectangle.y += 50;
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}
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else if (event.key.keysym.sym == SDLK_RIGHT)
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{
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rectangle.x += 50;
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}
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else if (event.key.keysym.sym == SDLK_LEFT)
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{
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rectangle.x -= 50;
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}
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else
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{
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/* Do nothing. */
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}
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redraw = true;
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}
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else if (event.type == SDL_QUIT)
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{
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run = false;
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}
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else if (event.type == SDL_WINDOWEVENT)
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{
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switch (event.window.event)
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{
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case SDL_WINDOWEVENT_ENTER:
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case SDL_WINDOWEVENT_SHOWN:
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case SDL_WINDOWEVENT_MOVED:
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case SDL_WINDOWEVENT_EXPOSED:
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case SDL_WINDOWEVENT_RESTORED:
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redraw = true;
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break;
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case SDL_WINDOWEVENT_RESIZED:
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case SDL_WINDOWEVENT_SIZE_CHANGED:
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case SDL_WINDOWEVENT_MAXIMIZED:
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redraw = true;
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SDL_GetWindowSize(win, &destR.w, &destR.h);
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SDL_Texture *texture_temp = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, destR.w, destR.h);
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srcR.h = destR.h;
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srcR.w = destR.w;
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SDL_RenderCopy(renderer, texture_temp, &srcR, &destR);
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SDL_DestroyTexture(texture);
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texture = texture_temp;
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break;
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}
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}
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else
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{
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/* Do nothing. */
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}
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}
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if (redraw)
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{
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SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0x00);
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SDL_RenderClear(renderer);
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SDL_SetRenderTarget(renderer, texture);
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SDL_RenderDrawRect(renderer, &rectangle);
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SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0x00);
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SDL_RenderFillRect(renderer, &rectangle);
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SDL_SetRenderTarget(renderer, NULL);
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SDL_RenderCopy(renderer, texture, &srcR, &destR);
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SDL_RenderPresent(renderer);
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}
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/* do some other stuff here -- draw your app, etc. */
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}
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SDL_FreeSurface(image);
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SDL_DestroyTexture(texture);
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SDL_DestroyRenderer(renderer);
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SDL_DestroyWindow(win);
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return 0;
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}
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//g++ main.cpp -o blah `sdl2-config --cflags --libs`
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/*
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g++ main.cpp -IC:\Users\Daniel\Documents\Projects\i686-w64-mingw32\include\SDL2 -LC:\Users\Daniel\Documents\Projects\i686-w64-mingw32\lib -w -Wl,-subsystem,windows -lmingw32 -lSDL2main -lSDL2 -o SDLMain
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*/
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