[Add] Screenshot key.

README

@@ -49,7 +49,12 @@ External View:
 Special:
 ~~~~~~~~
 
-ctrl-q - quit.
-i   - show some ugly debug info.
+  ctrl-q        - quit.
+  i             - show some ugly debug info.
+  ctrl-prntscrn - Screenshot.
+  F11           - Fullscreen.
+  F12           - Add a ship.
+  shift-F12     - Add a station.
+  F9            - Quicksave.
 
 

src/main.cpp

@@ -93,6 +93,7 @@ void L3D::Init(IniConfig& config) {
     }
   }
 
+  SDL_WM_SetCaption("Lephisto", "Lephisto"); /* It's about time we name our application window.. */
   L3D::scrWidth = width;
   L3D::scrHeight = height;
   L3D::scrAspect = width / (float)height;
@@ -154,6 +155,23 @@ void L3D::SetView(View* v) {
   currentView->ShowAll();
 }
 
+void Screendump(char* destFile) {
+  const int W = L3D::GetScrHeight();
+  const int H = L3D::GetScrWidth();
+  char pixel_data[3*W*H];
+  short TGAhead[] = { 0, 2, 0, 0, 0, 0, W, H, 24 };
+  FILE* out = fopen(destFile, "w");
+  if(!out) goto error;
+  glReadBuffer(GL_FRONT);
+  glReadPixels(0, 0, W, H, GL_BGR, GL_UNSIGNED_BYTE, pixel_data);
+  if(fwrite(&TGAhead, sizeof(TGAhead), 3, out) != 3) goto error;
+  if(fwrite(pixel_data, 3*W*H, 1, out) != 1) goto error;
+  fclose(out);
+  return;
+error:
+  printf("Failed to write screendump.\n");;
+}
+
 void L3D::HandleEvents(void) {
   SDL_Event event;
 
@@ -164,6 +182,13 @@ void L3D::HandleEvents(void) {
     case SDL_KEYDOWN:
       if(KeyState(SDLK_LCTRL) && (event.key.keysym.sym == SDLK_q)) L3D::Quit();
       if(event.key.keysym.sym == SDLK_i) L3D::showDebugInfo = !L3D::showDebugInfo;
+      if((event.key.keysym.sym == SDLK_PRINT) && KeyState(SDLK_LCTRL)) {
+        char buf[256];
+        const time_t t = time(0);
+        struct tm* _tm = localtime(&t);
+        strftime(buf, sizeof(buf), "screenshot-%Y%m%d-%h%M%S.tga", _tm);
+        Screendump(buf);
+      }
 #ifdef DEBUG
       if(event.key.keysym.sym == SDLK_F12) {
         matrix4x4d m; L3D::player->GetRotMatrix(m);