示例#1
0
int main(int argc, char *argv[])
{
	SDL_Init(SDL_INIT_EVERYTHING);

	SDL_Window *window;
	window = SDL_CreateWindow("SDLwindow", 600, 300, MainWindowWidth, MainWindowHigh, SDL_WINDOW_SHOWN);

	SDL_Renderer* renderer = NULL;
	renderer =  SDL_CreateRenderer( window, 0, SDL_RENDER_TARGETS_RESET);

	SDL_SetRenderDrawColor(renderer,255,255,255,255);
	SDL_RenderClear( renderer );

	SDL_SetRenderDrawColor(renderer,0,0,0,0);
	SDL_RenderDrawLine(renderer,MainWindowWidth/12,MainWindowHigh-30,MainWindowWidth/12,MainWindowHigh-70);
	SDL_RenderDrawLine(renderer,MainWindowWidth/12,MainWindowHigh-30,MainWindowWidth/12-10,MainWindowHigh-50);
	SDL_RenderDrawLine(renderer,MainWindowWidth/12,MainWindowHigh-30,MainWindowWidth/12+10,MainWindowHigh-50);

	SDL_RenderDrawLine(renderer,MainWindowWidth/12*11,MainWindowHigh-30,MainWindowWidth/12*11,MainWindowHigh-70);
	SDL_RenderDrawLine(renderer,MainWindowWidth/12*11,MainWindowHigh-70,MainWindowWidth/12*11-10,MainWindowHigh-50);
	SDL_RenderDrawLine(renderer,MainWindowWidth/12*11,MainWindowHigh-70,MainWindowWidth/12*11+10,MainWindowHigh-50);

	Road road;
	road.Draw(renderer);

	Car object;
	object.SetX(MainWindowWidth/5*3);
	object.SetY(MainWindowHigh/5*3);
	object.SetAngle(0);
	object.Draw(renderer);

	Actions actions;

	SDL_Event event;
	int rl=0,rp=0;

	while (1) 
	{
		while (SDL_PollEvent(&event)) 
		{
			switch (event.type) 
			{
			case SDL_KEYDOWN:
				{
					if (SDL_GetScancodeFromKey(event.key.keysym.sym)==SDL_SCANCODE_LEFT)
					{
						if (((object.GetX()>=MainWindowWidth/2-10)&&(object.GetDirection()==true))||
							((object.GetX()<=MainWindowWidth/2+10)&&(object.GetDirection()==false)))
						{
							bool AChecked=false;
							if ((object.GetX()<MainWindowWidth/2+10)&&(object.GetX()>MainWindowWidth/2-10))
							{
								actions.ScanA(object,road);
								AChecked=true;
							}
							if (rp==1)
							{
								rl=0;
								rp=0;
							}
							if (rl==0)
							{
								object.RotateLeft();
								rl++;
							}
							object.Rotate90(renderer);
							road.Draw(renderer);
							if (!AChecked)
								actions.ScanA(object,road);

							actions.ScanBC(object,road);
							actions.ActionOutput();
						}
					}
					if (SDL_GetScancodeFromKey(event.key.keysym.sym)==SDL_SCANCODE_RIGHT)
					{
						if (((object.GetX()>=MainWindowWidth/2-10)&&(object.GetDirection()==false))||
							((object.GetX()<=MainWindowWidth/2+10)&&(object.GetDirection()==true)))
						{
							bool AChecked=false;
							if ((object.GetX()<MainWindowWidth/2+10)&&(object.GetX()>MainWindowWidth/2-10))
							{
								actions.ScanA(object,road);
								AChecked=true;
							}
							actions.ScanA(object,road);
							if (rl==1)
							{
								rl=0;
								rp=0;
							}
							if (rp==0)
							{
								object.RotateRight();
								rp++;
							}
							object.Rotate90(renderer);
							road.Draw(renderer);
							if (!AChecked)
								actions.ScanA(object,road);
							actions.ScanBC(object,road);
							actions.ActionOutput();
						}
					}
					if (SDL_GetScancodeFromKey(event.key.keysym.sym)==SDL_SCANCODE_UP)
					{
						if ((object.GetX()<MainWindowWidth/2-10)||(object.GetX()>MainWindowWidth/2+10))
						{
							road.Draw(renderer);
							road.Move(object.GetDirection());
							Sleep(50);
						}
					}
					if (SDL_GetScancodeFromKey(event.key.keysym.sym)==SDL_SCANCODE_ESCAPE)
						return 0;
				}
				break;
			case SDL_QUIT:
				exit(0);
			}
		}
	}

	SDL_DestroyWindow(window); 
	SDL_Quit();

	return 0;
}