I am beginning SDL programming in C. This simple program loops through rainbow colors and fills the window with them. (This is on Debian with Gnome if that helps.)
For some reason the program never registers the quit signal if I click to close the window. How can I fix the loop structure so that the program exits properly?
#include <SDL2/SDL.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
int main(void)
{
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Event event;
bool quit = false;
int i;
int rgb_rainbow[6][3] = { {255, 0, 0},
{255, 127, 0},
{255, 255, 0},
{0, 255, 0},
{0, 0, 255},
{75, 0, 130} };
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't initialize SDL: %s", SDL_GetError());
return(3);
}
if (SDL_CreateWindowAndRenderer(640,640,
SDL_WINDOW_RESIZABLE, &window, &renderer)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"Couldn't create window and renderer: %s", SDL_GetError());
return(3);
}
while (quit == false) {
for (i = 0; i < 6; ++i ) {
SDL_PollEvent(&event);
if (event.type == SDL_QUIT) {
quit = true;
break;
}
SDL_SetRenderDrawColor(renderer,
rgb_rainbow[i][0],
rgb_rainbow[i][1],
rgb_rainbow[i][2], 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Delay(500);
}
}
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return(0);
}
Window closing event is SDL_WINDOWEVENT with window.event set to SDL_WINDOWEVENT_CLOSE. You also getting only one event fron queue, and not even checking if queue had one. Check this out:
while (quit == false) {
for (i = 0; i < 6; ++i ) {
while(SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT ||
(event.type == SDL_WINDOWEVENT &&
event.window.event == SDL_WINDOWEVENT_CLOSE)) {
quit = true;
}
}
if(quit) { break; }
SDL_SetRenderDrawColor(renderer,
rgb_rainbow[i][0],
rgb_rainbow[i][1],
rgb_rainbow[i][2], 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Delay(500);
}
}
It is generally good practice to have your main loop render just one frame, not 6 (or any other number).
Related
I have this code that is setting up a window, along with the close button functionality.
#include <stdio.h>
#include <stdbool.h>
#include <SDL2/SDL.h>
int initialize();
void handle_input();
typedef struct {
SDL_Renderer *renderer;
SDL_Window *window;
bool running;
int FPS;
int width;
int height;
bool close_requested;
} Game;
Game game = {
.running = true,
.FPS = 60,
.width = 600,
.height = 600,
.close_requested = false,
};
int main(int argc, char* argv[]) {
initialize();
handle_input();
while(game.running) { //Game loop
SDL_SetRenderDrawColor(game.renderer, 255, 0, 0, 255);
SDL_RenderPresent(game.renderer);
SDL_Delay(1000/game.FPS);
} //End of game loop
SDL_DestroyRenderer(game.renderer);
SDL_DestroyWindow(game.window);
SDL_Quit();
return 0;
}
int initialize() {
if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) != 0) { //return 0 on success
printf("error initializing SDL: %s\n", SDL_GetError());
return 1;
}
SDL_Window* window = SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, game.width, game.height, 0); //creates window
if (!window) {
printf("error creating window: %s\n", SDL_GetError());
SDL_Quit();
return 1;
}
Uint32 render_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC; //creates a renderer
game.renderer = SDL_CreateRenderer(window, -1, render_flags);
if (!game.renderer) {
printf("error creating renderer: %s\n", SDL_GetError());
SDL_DestroyWindow(window);
SDL_Quit();
return 1;
}
}
void handle_input() {
SDL_Event event;
while (!game.close_requested) { //close button
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT) {
game.close_requested = true;
game.running = false;
}
}
}
}
However, whenever I try to run this program, the window won't even open and I'm getting 0 errors in the console, besides a warning that states control may reach end of non-void function at the initialize() function. What does that warning mean? What is going on with my code? What did I do wrong?
I see 2 issues here:
you call handle_input() in your main before you enter the main loop and it gets stuck there until you exit, so SDL_RenderPresent() is never called.
the initialize function doesn't return anything in case of success, this is why you see the warning.
Try with the following changes, in main() move your input handling inside the loop:
int main(int argc, char* argv[]) {
initialize();
while(game.running && !game.close_requested) {
handle_input(); // <-- move here
SDL_SetRenderDrawColor(game.renderer, 255, 0, 0, 255);
SDL_RenderPresent(game.renderer);
SDL_Delay(1000/game.FPS);
}
// the rest...
}
In initialize() add a return 0; at the end.
In handle_input() remove the outer loop:
void handle_input() {
SDL_Event event;
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT) {
game.close_requested = true;
game.running = false;
}
}
}
Situation
I am working on an SDL2 program and I want to remove the black terminal window that shows up everytime I fire the program,
its kinda annoying to have a black window randomly in my screen :/
What I've Tried
I've tried looking up in Google but nothing actually shows up that can fix my situation
Here's The Rest Of My Code
#include <stdio.h>
#include <SDL.h>
int main(int argc, char **args) {
// SDL Window Declaration
SDL_Surface* screen;
SDL_Window* window;
SDL_Rect plrBox;
SDL_Rect plrMot;
plrMot.x = 1;
plrMot.y = 1;
plrBox.x = 0;
plrBox.y = 0;
plrBox.w = 10;
plrBox.h = 10;
// SDL Initialization
if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
printf("Fail At SDL_Init()\n");
return 1;
}
// Window Creation
window = SDL_CreateWindow(
"Paint",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
400,
300,
SDL_WINDOW_SHOWN
);
if (!window) {
printf("Fail at SDL_CreateWindow\n");
}
// Surface Creation
screen = SDL_GetWindowSurface(window);
if (!screen) {
printf("Fail at Screen\n");
return 1;
}
int run = 1;
while (run) {
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 255, 255, 255));
SDL_FillRect(screen, &plrBox, SDL_MapRGB(screen->format, 0, 0, 0));
plrBox.x += plrMot.x;
plrBox.y += plrMot.y;
if (plrBox.y > 300) {
plrMot.y = -plrMot.y;
}
if (plrBox.x > 400) {
plrMot.x = -plrMot.x;
}
if (plrBox.y < 0) {
plrMot.y = -plrMot.y;
}
if (plrBox.x < 0) {
plrMot.x = -plrMot.x;
}
SDL_Event events;
while (SDL_PollEvent(&events)){
switch (events.type) {
case SDL_QUIT:
run = 0;
}
}
SDL_UpdateWindowSurface(window);
}
// Quit
window = NULL;
screen = NULL;
SDL_Quit();
return 0;
}
I use mingw for all the comments out there
Here is a simple code to control the movement a rectangle on the screen.
The platform is Windows 10 and mingw32 is used to compile the code.
The follwing cmake script is used to build the code.
cmake_minimum_required(VERSION 3.12)
project(main C)
set(CMAKE_C_STANDARD 11)
add_executable(main main.c)
target_link_libraries(main mingw32 SDL2main SDL2)
When ran the following output is generated.
Error in create_renderer Couldn't find matching render driver
Process finished with exit code 1
And the code is as follows.
// #define SDL_MAIN_HANDLED
#include <stdio.h>
#include <stdlib.h>
#include <SDL2/SDL.h>
void init() {
int error = SDL_Init(SDL_INIT_EVERYTHING);
if (error){
printf("Error in init: %s\n", SDL_GetError());
SDL_Quit();
exit(1);
}
}
SDL_Window* create_window(SDL_Point size, const char* title) {
SDL_Window *window = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, size.x, size.y, SDL_WINDOW_OPENGL);
if (window == NULL) {
printf("Error in create_window %s\n", SDL_GetError());
SDL_Quit();
exit(1);
}
return window;
}
SDL_Renderer* create_renderer(SDL_Window *window, SDL_Point size) {
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_SOFTWARE | SDL_RENDERER_ACCELERATED);
if (renderer == NULL) {
printf("Error in create_renderer %s\n", SDL_GetError());
SDL_DestroyWindow(window);
SDL_Quit();
exit(1);
}
SDL_RenderSetLogicalSize(renderer, size.x, size.y);
return renderer;
}
void clean_up(SDL_Renderer *renderer, SDL_Window *window) {
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
}
int main(int argc, char *argv[]) {
init();
SDL_Window *window;
SDL_Point window_size = {1280, 720};
window = create_window(window_size, "Window");
SDL_Renderer *renderer;
renderer = create_renderer(window, window_size);
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_Rect player = {100, 100, 20, 20};
int should_exit = 0;
while (!should_exit) {
SDL_Event event;
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT) {
should_exit = 1;
clean_up(renderer, window);
}
else if (event.type == SDL_KEYDOWN) {
switch (event.key.keysym.sym) {
case SDLK_RIGHT:
player.x++;
break;
case SDLK_LEFT:
player.x--;
break;
case SDLK_DOWN:
player.y++;
break;
case SDLK_UP:
player.y--;
break;
default:
break;
}
}
}
SDL_RenderClear(renderer);
SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
SDL_RenderFillRect(renderer, &player);
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_RenderPresent(renderer);
}
return 0;
}
I searched for duplicate questions and their solution was to update the graphics driver and check that the corresponding subsystems are initialized before calling SDL_CreateRenderer.
I have the latest nvidia drivers installed to no avail, and as you can see the initialization order is correct. Can you guide me as to find the reason why?
I have recently started learning game programming in C. I am using a virtual studio code on linux Ubuntu, and image star.png is not displaying on the screen, there are no errors or problems reported by vs code. I have tried reinstalling sdl2-dev and sdl2-image-dev libraries. Maybe it is a problem with SDL, or maybe with my code (it was written in 2013).
The code should draw a white ractangl, which i can move around, on a blue screen and place a star in upper left corner of a window. It does everything except placing a star.
The code: (doesn't show "Cannot dinf star.png!" so I guess it is not that)
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <stdio.h>
typedef struct
{
int x, y;
short life;
char *name;
}Man;
typedef struct
{
//players
Man man;
//image
SDL_Texture *star;
} GameState;
/////////////////////////////////////////////////////////////////////processEvents
int processEvents(SDL_Window *window , GameState *game)
{
SDL_Event event;
int done = 0;
//Check for events
while (SDL_PollEvent(&event))
{
switch (event.type)
{
case SDL_WINDOWEVENT_CLOSE:
{
if (window)
{
SDL_DestroyWindow(window);
window = NULL;
done = 1;
}
}
break;
case SDL_KEYDOWN:
{
switch (event.key.keysym.sym)
{
case SDLK_ESCAPE:
done = 1;
break;
}
}
break;
case SDL_QUIT:
done = 1;
break;
}
}
const Uint8 *state = SDL_GetKeyboardState(NULL);
if(state[SDL_SCANCODE_LEFT])
{
game->man.x -= 1;
}
if(state[SDL_SCANCODE_RIGHT])
{
game->man.x += 1;
}
if(state[SDL_SCANCODE_UP])
{
game->man.y -= 1;
}
if(state[SDL_SCANCODE_DOWN])
{
game->man.y += 1;
}
SDL_Delay(10);
return done;
}
/////////////////////////////////////////////////////////////////////////////////////doRender
void doRedner(SDL_Renderer *renderer, GameState *game)
{
SDL_SetRenderDrawColor(renderer , 0, 0, 255, 255); //blue
//screen clean up into blue
SDL_RenderClear(renderer);
//set color
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
SDL_Rect rect = {game->man.x, game->man.y, 80, 80};
SDL_RenderFillRect(renderer, &rect);
//draw a star
SDL_Rect starRect = { 50, 50, 64, 64 };
SDL_RenderCopy(renderer, game->star, NULL, &starRect);
SDL_RenderPresent(renderer);
}
/////////////////////////////////////////////////////////////////////////////////////main funkction
int main(int argc, char *argv[])
{
GameState gameState;
SDL_Window *window = NULL;
SDL_Renderer *renderer = NULL;
SDL_Surface *starSurface = NULL;
SDL_Init(SDL_INIT_VIDEO);
gameState.man.x = 340-40;
gameState.man.y = 240-40;
window = SDL_CreateWindow("Game Widnow",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
640,
480,
0
);
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
//load image
starSurface = IMG_Load("star.png");
if(starSurface = NULL)
{
printf("Cannot find star.png!\n\n");
SDL_Quit();
return 1;
}
gameState.star = SDL_CreateTextureFromSurface(renderer, starSurface);
SDL_FreeSurface(starSurface);
int done = 0;
while(!done)
{
//check events
done = processEvents(window, &gameState);
//render
doRedner(renderer, &gameState);
}
SDL_Delay(1000);
//exit game and free memory
SDL_DestroyTexture(gameState.star);
//destroy and close window
SDL_DestroyWindow(window);
SDL_DestroyRenderer(renderer);
SDL_Quit();
return 0;
}
TL;DR: Your intention is to perform a comparison, but you are using the assignment operator (i.e., =) instead of the comparison operator ==.
The conditional expression in your if statement:
if(starSurface = NULL)
{
...
}
does not check whether starSurface is NULL. The expression starSurface = NULL assigns NULL to starSurface and evaluates to NULL. Therefore, the condition evaluates to false and no error message is displayed.
Instead, you should write (note the double = below):
if (starSurface == NULL)
or just:
if (!starSurface)
My SDL Window displays a bitmap on top of another bitmap however I am not able to control the bitmap image using SDL_KeyDown events. The only event that works is SDL_QUIT.
I attempted to map using the ASWD keys and the Up Down Left and Right arrow keys, however the SDL Window doesn't process any of those events. The only event that occurs is when I click the X button to close the window or when I press the q or escape keys to close the window. Also, none of the printf statements are appearing on the console so I am not sure exactly where the problem is because the program compiles and runs without any errors.
I am using C not C++
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_timer.h>
#include <SDL_image.h>
#define WINDOW_WIDTH (640)
#define WINDOW_HEIGHT (480)
// Speed in Pixels/Seconds
#define SCROLL_SPEED (300)
// Spirte Size
#define SPRITE_SIZE 32
int main(int argc, const char * argv[]) {
// Attempt to initialize graphics library
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
SDL_Log("Unable to initialize SDL: %s", SDL_GetError());
return 1;
}
//Initialize Key Variables
SDL_Window *window = NULL;
SDL_Renderer *renderer = NULL;
SDL_Surface *windowSurface = NULL;
SDL_Surface *imageSurface = NULL;
// Creating Surfaces and Addresses
SDL_Surface *temp = NULL;
SDL_Surface *sprite = NULL;
// set sprite position
SDL_Rect dstSprite = {0, 0, 32, 32};
// Attempt to create SDL Window
window = SDL_CreateWindow("Atari Lunar Lander", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WINDOW_WIDTH, WINDOW_HEIGHT, 0);
// Print an Error if the window fails to initialize
if (window == NULL) {
printf("Could not create window: %s\n", SDL_GetError());
return 1;
}
// Create The Title of the Window
SDL_SetWindowTitle(window, "Atari Lunar Lander");
// Create SDL Render Window
Uint32 render_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE;
renderer = SDL_CreateRenderer(window, -1, render_flags);
// if rendering the window fails
if (!renderer) {
printf("error creating render: %s\n", SDL_GetError());
SDL_DestroyWindow(window);
SDL_Quit();
return 1;
}
windowSurface = SDL_GetWindowSurface(window);
// Load A bitmap image as an Surface
windowSurface = SDL_LoadBMP("/Users/jeremiahonwubuya/Desktop/AtariLunarLander/outerspace.bmp");
if (!windowSurface) {
printf("error creating surface: %s\n", SDL_GetError());
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 1;
}
//Load Image data into graphics hardware memory
SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, windowSurface);
if (!texture) {
printf("error creating texture: %s\n", SDL_GetError());
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 1;
}
// load bitmap image into an SDL_Surface "temp" and store "temp" into the SDL_Surface "sprite" that is optimized for Blitting
temp = SDL_LoadBMP("/Users/jeremiahonwubuya/Desktop/AtariLunarLander/player.bmp");
sprite = SDL_ConvertSurface(temp, temp->format, 0);
SDL_FreeSurface(temp);
SDL_Texture *playerTexture = SDL_CreateTextureFromSurface(renderer, sprite);
if (!sprite) {
printf("error creating sprite: %s\n", SDL_GetError());
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 1;
}
// updating the Window Surface to be the BitMap Image
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderCopy(renderer, playerTexture, NULL, &dstSprite);
SDL_RenderPresent(renderer);
bool isRunning = true;
SDL_Event event;
while (isRunning) {
while (SDL_PollEvent(&event) != 0 ) {
if (event.type == SDL_QUIT) {
// close button clicked
isRunning = false;
break;
}
if (event.type == SDL_KEYDOWN) {
// close program upon buttons pressed
switch(event.key.keysym.sym){
case SDLK_q:
printf("program stopped");
isRunning = false;
break;
case SDLK_ESCAPE:
printf("programm stopped");
isRunning = false;
break;
}
// Animating the Sprite
if (event.key.keysym.sym == SDLK_a || event.key.keysym.sym == SDLK_LEFT) {
dstSprite.x -= 5;
dstSprite.w = 32;
dstSprite.h = 32;
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderCopy(renderer, playerTexture, NULL, &dstSprite);
SDL_RenderPresent(renderer);
printf("sprite moved leftt to position %d \n", dstSprite.x);
}
if (event.key.keysym.sym == SDLK_d || event.key.keysym.sym == SDLK_RIGHT) {
dstSprite.x += 5;
dstSprite.w = 32;
dstSprite.h = 32;
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderCopy(renderer, playerTexture, NULL, &dstSprite);
SDL_RenderPresent(renderer);
printf("sprite moved right to position %d \n", dstSprite.x);
}
if (event.key.keysym.sym == SDLK_w || event.key.keysym.sym == SDLK_UP) {
dstSprite.y -= 5;
dstSprite.w = 32;
dstSprite.h = 32;
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderCopy(renderer, playerTexture, NULL, &dstSprite);
SDL_RenderPresent(renderer);
printf("sprite moved up to position %d \n", dstSprite.y);
}
if (event.key.keysym.sym == SDLK_s || event.key.keysym.sym == SDLK_DOWN) {
dstSprite.y += 5;
dstSprite.w = 32;
dstSprite.h = 32;
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderCopy(renderer, playerTexture, NULL, &dstSprite);
SDL_RenderPresent(renderer);
printf("sprite moved down to position %d \n", dstSprite.y);
}
}
// Prevent Sprite from colliding with the edges of the screen
if ( dstSprite.x < 0 ) {
dstSprite.x = 0;
}
else if ( dstSprite.x > WINDOW_WIDTH-SPRITE_SIZE ) {
dstSprite.x = WINDOW_WIDTH-SPRITE_SIZE;
}
if ( dstSprite.y < 0 ) {
dstSprite.y = 0;
}
else if ( dstSprite.y > WINDOW_HEIGHT-SPRITE_SIZE ) {
dstSprite.y = WINDOW_HEIGHT-SPRITE_SIZE;
}
// Draw the Sprite
SDL_BlitSurface(sprite, NULL, windowSurface, &dstSprite);
SDL_UpdateWindowSurface(window);
}
}
SDL_Delay(5000);
// Clean Up
// Free SDL Surfaces
SDL_FreeSurface(sprite);
sprite = NULL;
SDL_FreeSurface(windowSurface);
windowSurface = NULL;
SDL_FreeSurface(imageSurface);
imageSurface = NULL;
// Destroy Texture and Window
texture = NULL;
SDL_DestroyTexture(texture);
playerTexture = NULL;
SDL_DestroyTexture(playerTexture);
window = NULL;
SDL_DestroyWindow(window);
SDL_Quit();
}
Your OR'ing your cases thus producing different integers than what are in .sym. You should split your ORs and let them fallthrough or use an if condition. For example:
case SDLK_a:
case SDLK_LEFT:
printf("sprite moved leftt");
break;
case SDLK_d:
case SDLK_RIGHT:
printf("sprite moved right");
break;
case SDLK_w:
case SDLK_UP:
printf("sprite moved up");
break;
case SDLK_s:
case SDLK_DOWN:
printf("sprite moved down");
break;
Or
if (event.key.keysym.sym == SDLK_a || event.key.keysym.sym == SDLK_LEFT)
// do something..
So a few things, first your code is "working", I get printed the text out when I press the correct keys but you have another error, those breaks in the ifs are making you skip the bliting section, remember that breaks break the execution flow in switch, for, and while loops, you don't need them on ifs.
Also If you press a key and then don't press anything you should be getting your screen updated. I tested with this program. Tell me if it is receiving your keys..
#include <SDL2/SDL.h>
#include <stdio.h>
#include <stdlib.h>
int main() {
SDL_Init(SDL_INIT_VIDEO);
bool isRunning = true;
SDL_Event event;
SDL_Rect dstSprite = {0, 0, 0, 0};
while (isRunning) {
while (SDL_PollEvent(&event) != 0) {
if (event.type == SDL_QUIT) {
// close button clicked
isRunning = false;
break;
}
if (event.type == SDL_KEYDOWN) {
// close program upon buttons pressed
switch (event.key.keysym.sym) {
case SDLK_q:
printf("program stopped");
isRunning = false;
break;
case SDLK_ESCAPE:
printf("programm stopped");
isRunning = false;
break;
}
// Animating the Sprite
if (event.key.keysym.sym == SDLK_a ||
event.key.keysym.sym == SDLK_LEFT) {
dstSprite.x -= 5;
printf("sprite moved leftt to position %d \n", dstSprite.x);
break;
}
if (event.key.keysym.sym == SDLK_d ||
event.key.keysym.sym == SDLK_RIGHT) {
dstSprite.x += 5;
printf("sprite moved right to position %d \n", dstSprite.x);
break;
}
if (event.key.keysym.sym == SDLK_w ||
event.key.keysym.sym == SDLK_UP) {
dstSprite.y -= 5;
printf("sprite moved up to position %d \n", dstSprite.y);
break;
}
if (event.key.keysym.sym == SDLK_s ||
event.key.keysym.sym == SDLK_DOWN) {
dstSprite.y += 5;
printf("sprite moved down to position %d \n", dstSprite.y);
break;
}
}
printf("update graphics\n");
}
}
}