in C::B add following entries :
in project build options :-
tick on c++11 & targetx86_64 (64 bit) [-m64]
on linker settings :-
SDL2
SDL2_image
SDL2_ttf
in search directories:-
compiler:-
/usr/include/SDL2
in linker :-
/usr/lib64
now new project-> SDL2 project. Enter project name.-> next ->finish.
now open main.cpp and make it blank.
then write following program:-
#include <SDL.h>
#include <SDL_image.h>
#include <SDL_ttf.h>
#include <iostream>
#include <string>
#include <cstring>
using std::cout;
using std::cin;
using std::endl;
using std::string;
int main(int argc,char ** argv)
{
SDL_Surface *image1 = nullptr;
SDL_Surface *image2 = nullptr;
SDL_Surface *image3 = nullptr;
SDL_Surface * currentSurface = nullptr;
SDL_Renderer *renderer = nullptr;
SDL_Renderer *textRenderer = nullptr;
SDL_Texture * winTexture = nullptr;
string str = "";
char *x, *y;
x = new char[sizeof(int) + 10];
y = new char[sizeof(int) + 10];
char x1[sizeof(int) + 1];
char y1[sizeof(int) + 1];
if(SDL_Init(SDL_INIT_EVERYTHING) < 0)
{
cout << "Error in SDL_Init(SDL_INIT_EVERYTHING) ... " << SDL_GetError() << endl;
exit(1);
}
SDL_Window *sdlwindow = SDL_CreateWindow("Game Engine", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1024, 768, SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL);
if(sdlwindow == nullptr)
{
cout << "Error in SDL_CreateWindow(\"Game Engine ... \" " << SDL_GetError() << endl;
exit(2);
}
SDL_Surface * windowSurface = SDL_GetWindowSurface(sdlwindow);
if( windowSurface == nullptr)
{
cout << "Error in SDL_GetWindowSurface(sdlwindow); " << SDL_GetError() <<endl;
exit(8);
}
if( TTF_Init() < 0)
{
cout << "Error in if( TTF_Init() < 0) " << TTF_GetError() << endl;
exit(11);
}
image1 = SDL_LoadBMP("/opt/projects/sdl/images/bmp_file.bmp");
if(image1 == nullptr)
{
cout << " Error in SDL_LoadBMP(\"bmp_file.bmp\"); " <<SDL_GetError() << endl;
exit(3);
}
if((image2 = SDL_LoadBMP("/opt/projects/sdl/images/file1.BMP")) == nullptr)
{
cout << "Error in SDL_LoadBMP(\"/opt/projects/sdl/images/file1.BMP\")) " << SDL_GetError() << endl;
exit(4);
}
if((image3 = SDL_LoadBMP("/opt/projects/sdl/images/file2.BMP")) == nullptr)
{
cout << "Error in SDL_LoadBMP(\"/opt/projects/sdl/images/file2.BMP\") " << SDL_GetError() << endl;
exit(5);
}
renderer = SDL_CreateRenderer(sdlwindow,-1, SDL_RENDERER_ACCELERATED);
SDL_Surface *surface = new SDL_Surface;
SDL_Texture *texture = nullptr;
SDL_Rect *rect = new SDL_Rect;
rect->x = rect->y = 0;
SDL_Rect trect;
trect.x = 500;
trect.y = 250;
TTF_Font *font = TTF_OpenFont("/opt/projects/sdl/fonts/roboto/Roboto-Medium.ttf", 20);
SDL_Color color = { 0, 255, 0, 255};
SDL_Texture *text = nullptr;
SDL_Surface *textSurface = nullptr;
int imgflags = IMG_INIT_PNG | IMG_INIT_JPG;
if(!(IMG_Init(imgflags) & imgflags))
{
cout << "Error in if(!(IMG_Init(imgflags) & imgflags)) " << IMG_GetError() << endl;
exit(9);
}
bool isRunning = true;
SDL_Event * ev = new SDL_Event;
while(isRunning)
{
while(SDL_PollEvent(ev) != 0)
{
if(ev->type == SDL_QUIT)
{
isRunning = false;
}
else if(ev->type == SDL_MOUSEBUTTONDOWN)
{
if(ev->button.button == SDL_BUTTON_LEFT)
{
surface = IMG_Load("/opt/projects/sdl/images/road.bmp");
}
else if(ev->button.button == SDL_BUTTON_RIGHT)
{
surface = IMG_Load("/opt/projects/sdl/images/rose.bmp");
}
texture = SDL_CreateTextureFromSurface(renderer,surface);
}
else if(ev->type == SDL_KEYDOWN)
{
switch (ev->key.keysym.sym)
{
case SDLK_1:
surface = IMG_Load("/opt/projects/sdl/images/bridge.jpg");
break;
case SDLK_2:
surface = IMG_Load("/opt/projects/sdl/images/tree.jpg");
break;
case SDLK_3:
surface = IMG_Load("/opt/projects/sdl/images/filepng.png");
break;
}
texture = SDL_CreateTextureFromSurface(renderer,surface);
}
else if(ev->type == SDL_MOUSEMOTION)
{
snprintf(x, sizeof(x), "%d", ev->button.x );
snprintf(y, sizeof(y), "%d", ev->button.y);
str.append(" x axis : " );
str.append(x);
str.append(" y axis : " );
str.append(y);
textSurface = TTF_RenderText_Solid(font, str.c_str(), color);
if(textSurface == nullptr)
{
cout << "Error in textSurface = TTF_RenderText_Solid(font, str.c_str(), color); " << SDL_GetError() << endl;
exit(10);
}
winTexture = SDL_CreateTextureFromSurface(renderer, textSurface);
if(winTexture == nullptr)
{
cout << "Error in texture = SDL_CreateTextureFromSurface(renderer, textSurface); " << SDL_GetError() <<endl;
exit(12);
}
SDL_QueryTexture(winTexture, NULL, NULL, &trect.w, &trect.h);
str = "";
}
}
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);//rect);
SDL_RenderCopy(renderer, winTexture, NULL, &trect);
SDL_RenderPresent(renderer);
}
SDL_FreeSurface(windowSurface);
SDL_FreeSurface(currentSurface);
SDL_DestroyWindow(sdlwindow);
SDL_FreeSurface(image1);
SDL_FreeSurface(image2);
SDL_FreeSurface(image3);
windowSurface = currentSurface = image1 = image2 = image3 = nullptr;
sdlwindow = nullptr;
IMG_Quit();
TTF_Quit();
SDL_Quit();
return 0;
}
now download some image files used in this program. save these in /opt/projects/sdl/images
No comments:
Post a Comment