cpp/openttd-patchpack/source Changeset - r18:4dc323149be4

Changeset - r18:4dc323149be4

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dominik - 20 years ago 2004-08-11 08:56:54
dominik@openttd.org

(svn r19) SDL performance fix fo palette animation and mouse jumping (jirif)

1 file changed with 40 insertions and 38 deletions:

sdl.c

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sdl.c

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@@ @@ -188,14 +188,17 @@ static void InitPalette(void) { @@
 	UpdatePalette(0, 256);
+}
-static void DrawSurfaceToScreen()
+static void CheckPaletteAnim()
+{
 	int n;
 	if(_pal_last_dirty != -1) {
 		UpdatePalette(_pal_first_dirty, _pal_last_dirty + 1);
 		_pal_last_dirty = -1;
+	}
+}
 static void DrawSurfaceToScreen()
+{
 	int n;
 	if ((n=_num_dirty_rects) != 0) {
 		_num_dirty_rects = 0;
@@ @@ -292,7 +295,7 @@ static bool CreateMainSurface(int w, int @@
 	DEBUG(misc, 0) ("sdl: using mode %dx%d", w, h);
-	newscreen = SDL_CALL SDL_SetVideoMode(w, h, 8, SDL_SWSURFACE + SDL_HWPALETTE + (_fullscreen?SDL_FULLSCREEN:SDL_RESIZABLE));
+	newscreen = SDL_CALL SDL_SetVideoMode(w, h, 8, SDL_HWSURFACE + SDL_HWPALETTE + (_fullscreen?SDL_FULLSCREEN:SDL_RESIZABLE));
 	if(newscreen == NULL)
 		return false;
@@ @@ -497,7 +500,7 @@ static void SdlVideoStop() @@
 static int SdlVideoMainLoop()
+{
 	uint32 next_tick = SDL_CALL SDL_GetTicks() + 30, cur_ticks;
+	uint32 next_tick = SDL_CALL SDL_GetTicks() + 30, cur_ticks, pal_tick ;
 	int i;
 	uint32 mod;
 	int numkeys;
@@ @@ -509,30 +512,10 @@ static int SdlVideoMainLoop() @@
 		while ((i=PollEvent()) == -1) {}
 		if (i>=0) return i;
 		mod = SDL_CALL SDL_GetModState();
 		_ctrl_pressed = !!(mod & (KMOD_LCTRL | KMOD_RCTRL));
 		_shift_pressed = !!(mod & (KMOD_LSHIFT | KMOD_RSHIFT));
 		keys = SDL_CALL SDL_GetKeyState(&numkeys);
 		if (_exit_game)	return ML_QUIT;
 		_dirkeys =
 			(keys[SDLK_LEFT] ? 1 : 0) +
 			(keys[SDLK_UP] ? 2 : 0) +
 			(keys[SDLK_RIGHT] ? 4 : 0) +
 			(keys[SDLK_DOWN] ? 8 : 0);
 		GameLoop();
 		_screen.dst_ptr = _sdl_screen->pixels;
 		UpdateWindows();
 		if ((cur_ticks=SDL_CALL SDL_GetTicks()) > next_tick) {
 			next_tick = cur_ticks;
 		} else {
 			DrawSurfaceToScreen();
+		}
 		mod = SDL_CALL SDL_GetModState();
 		keys = SDL_CALL SDL_GetKeyState(&numkeys);
 #if defined(_DEBUG)
 		if (_shift_pressed) {
 #else
@@ @@ -543,18 +526,37 @@ static int SdlVideoMainLoop() @@
 			_fast_forward = 0;
+		}
 		if (!_fast_forward || _pause) {
 			int d = next_tick - SDL_CALL SDL_GetTicks();
 			if (d > 0) {
 				SDL_CALL SDL_Delay(d);
+			}
 		} else {
 			next_tick = SDL_CALL SDL_GetTicks();
+		}
 		cur_ticks=SDL_CALL SDL_GetTicks();
 		if ((_fast_forward && !_pause) || cur_ticks > next_tick)
 			next_tick = cur_ticks;
 		if (cur_ticks == next_tick) {
 		next_tick += 30;
 		if (_exit_game)
 			return ML_QUIT;
 			_ctrl_pressed = !!(mod & (KMOD_LCTRL | KMOD_RCTRL));
 			_shift_pressed = !!(mod & (KMOD_LSHIFT | KMOD_RSHIFT));
 			// determine which directional keys are down
 			_dirkeys =
 			    (keys[SDLK_LEFT] ? 1 : 0) +
 			    (keys[SDLK_UP] ? 2 : 0) +
 			    (keys[SDLK_RIGHT] ? 4 : 0) +
 			    (keys[SDLK_DOWN] ? 8 : 0);
 			GameLoop();
 			_screen.dst_ptr = _sdl_screen->pixels;
 			UpdateWindows();
 			if (++ pal_tick > 4){
 			    CheckPaletteAnim();
 			    pal_tick = 1;
+			}
  			DrawSurfaceToScreen();
 		} else {
 			SDL_CALL SDL_Delay(1);
 			_screen.dst_ptr = _sdl_screen->pixels;
 			DrawMouseCursor();
 			DrawSurfaceToScreen();
+		}
+	}
+}

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