X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Flibgame%2Fsdl.c;h=e27c822e60cc5f301a4d291e431d5a1ce461808d;hp=19526fe0b5a3c1ff1847f019a7e2e0ed302db8cf;hb=b4a4b3e959ada7bae876a4a9d78f534e320a7b41;hpb=1465ca1ffdf2104d25b9a46ca9bf8a3f175403fd diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c index 19526fe0..4b44daa1 100644 --- a/src/libgame/sdl.c +++ b/src/libgame/sdl.c @@ -1,43 +1,417 @@ -/*********************************************************** -* Rocks'n'Diamonds -- McDuffin Strikes Back! * -*----------------------------------------------------------* -* ©1995 Artsoft Development * -* Holger Schemel * -* 33659 Bielefeld-Senne * -* Telefon: (0521) 493245 * -* eMail: aeglos@valinor.owl.de * -* aeglos@uni-paderborn.de * -* q99492@pbhrzx.uni-paderborn.de * -*----------------------------------------------------------* -* sdl.c * -***********************************************************/ - -#include "libgame.h" - -#ifdef TARGET_SDL - -inline void SDLInitVideoDisplay(void) +// ============================================================================ +// Artsoft Retro-Game Library +// ---------------------------------------------------------------------------- +// (c) 1995-2014 by Artsoft Entertainment +// Holger Schemel +// info@artsoft.org +// http://www.artsoft.org/ +// ---------------------------------------------------------------------------- +// sdl.c +// ============================================================================ + +#include "system.h" +#include "sound.h" +#include "joystick.h" +#include "misc.h" +#include "setup.h" + +#define ENABLE_UNUSED_CODE 0 /* currently unused functions */ + + +/* ========================================================================= */ +/* video functions */ +/* ========================================================================= */ + +/* SDL internal variables */ +#if defined(TARGET_SDL2) +static SDL_Window *sdl_window = NULL; +static SDL_Renderer *sdl_renderer = NULL; +static SDL_Texture *sdl_texture_stream = NULL; +static SDL_Texture *sdl_texture_target = NULL; +static boolean fullscreen_enabled = FALSE; +#endif + +static boolean limit_screen_updates = FALSE; + + +/* functions from SGE library */ +void sge_Line(SDL_Surface *, Sint16, Sint16, Sint16, Sint16, Uint32); + +void SDLLimitScreenUpdates(boolean enable) +{ + limit_screen_updates = enable; +} + +static void FinalizeScreen(int draw_target) +{ + // copy global animations to render target buffer, if defined (below border) + if (gfx.draw_global_anim_function != NULL) + gfx.draw_global_anim_function(draw_target, DRAW_GLOBAL_ANIM_STAGE_1); + + // copy global masked border to render target buffer, if defined + if (gfx.draw_global_border_function != NULL) + gfx.draw_global_border_function(draw_target); + + // copy global animations to render target buffer, if defined (above border) + if (gfx.draw_global_anim_function != NULL) + gfx.draw_global_anim_function(draw_target, DRAW_GLOBAL_ANIM_STAGE_2); +} + +static void UpdateScreenExt(SDL_Rect *rect, boolean with_frame_delay) +{ + static unsigned int update_screen_delay = 0; + unsigned int update_screen_delay_value = 50; /* (milliseconds) */ + SDL_Surface *screen = backbuffer->surface; + + if (limit_screen_updates && + !DelayReached(&update_screen_delay, update_screen_delay_value)) + return; + + LimitScreenUpdates(FALSE); + +#if 0 + { + static int LastFrameCounter = 0; + boolean changed = (FrameCounter != LastFrameCounter); + + printf("::: FrameCounter == %d [%s]\n", FrameCounter, + (changed ? "-" : "SAME FRAME UPDATED")); + + LastFrameCounter = FrameCounter; + + /* + if (FrameCounter % 2) + return; + */ + } +#endif + + if (video.screen_rendering_mode == SPECIAL_RENDERING_BITMAP && + gfx.final_screen_bitmap != NULL) // may not be initialized yet + { + // draw global animations using bitmaps instead of using textures + // to prevent texture scaling artefacts (this is potentially slower) + + BlitBitmap(backbuffer, gfx.final_screen_bitmap, 0, 0, + gfx.win_xsize, gfx.win_ysize, 0, 0); + + FinalizeScreen(DRAW_TO_SCREEN); + + screen = gfx.final_screen_bitmap->surface; + + // force full window redraw + rect = NULL; + } + +#if defined(TARGET_SDL2) + SDL_Texture *sdl_texture = sdl_texture_stream; + + // deactivate use of target texture if render targets are not supported + if ((video.screen_rendering_mode == SPECIAL_RENDERING_TARGET || + video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE) && + sdl_texture_target == NULL) + video.screen_rendering_mode = SPECIAL_RENDERING_OFF; + + if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET) + sdl_texture = sdl_texture_target; + + if (rect) + { + int bytes_x = screen->pitch / video.width; + int bytes_y = screen->pitch; + + SDL_UpdateTexture(sdl_texture, rect, + screen->pixels + rect->x * bytes_x + rect->y * bytes_y, + screen->pitch); + } + else + { + SDL_UpdateTexture(sdl_texture, NULL, screen->pixels, screen->pitch); + } + + // clear render target buffer + SDL_RenderClear(sdl_renderer); + + // set renderer to use target texture for rendering + if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET || + video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE) + SDL_SetRenderTarget(sdl_renderer, sdl_texture_target); + + // copy backbuffer texture to render target buffer + if (video.screen_rendering_mode != SPECIAL_RENDERING_TARGET) + SDL_RenderCopy(sdl_renderer, sdl_texture_stream, NULL, NULL); + + if (video.screen_rendering_mode != SPECIAL_RENDERING_BITMAP) + FinalizeScreen(DRAW_TO_SCREEN); + + // when using target texture, copy it to screen buffer + if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET || + video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE) + { + SDL_SetRenderTarget(sdl_renderer, NULL); + SDL_RenderCopy(sdl_renderer, sdl_texture_target, NULL, NULL); + } +#endif + + // global synchronization point of the game to align video frame delay + if (with_frame_delay) + WaitUntilDelayReached(&video.frame_delay, video.frame_delay_value); + +#if defined(TARGET_SDL2) + // show render target buffer on screen + SDL_RenderPresent(sdl_renderer); +#else // TARGET_SDL + if (rect) + SDL_UpdateRects(screen, 1, rect); + else + SDL_UpdateRect(screen, 0, 0, 0, 0); +#endif +} + +static void UpdateScreen_WithFrameDelay(SDL_Rect *rect) +{ + UpdateScreenExt(rect, TRUE); +} + +static void UpdateScreen_WithoutFrameDelay(SDL_Rect *rect) +{ + UpdateScreenExt(rect, FALSE); +} + +static void SDLSetWindowIcon(char *basename) +{ + /* (setting the window icon on Mac OS X would replace the high-quality + dock icon with the currently smaller (and uglier) icon from file) */ + +#if !defined(PLATFORM_MACOSX) + char *filename = getCustomImageFilename(basename); + SDL_Surface *surface; + + if (filename == NULL) + { + Error(ERR_WARN, "SDLSetWindowIcon(): cannot find file '%s'", basename); + + return; + } + + if ((surface = IMG_Load(filename)) == NULL) + { + Error(ERR_WARN, "IMG_Load() failed: %s", SDL_GetError()); + + return; + } + + /* set transparent color */ + SDL_SetColorKey(surface, SET_TRANSPARENT_PIXEL, + SDL_MapRGB(surface->format, 0x00, 0x00, 0x00)); + +#if defined(TARGET_SDL2) + SDL_SetWindowIcon(sdl_window, surface); +#else + SDL_WM_SetIcon(surface, NULL); +#endif +#endif +} + +#if defined(TARGET_SDL2) + +static boolean equalSDLPixelFormat(SDL_PixelFormat *format1, + SDL_PixelFormat *format2) +{ + return (format1->format == format2->format && + format1->BitsPerPixel == format2->BitsPerPixel && + format1->BytesPerPixel == format2->BytesPerPixel && + format1->Rmask == format2->Rmask && + format1->Gmask == format2->Gmask && + format1->Bmask == format2->Bmask); +} + +SDL_Surface *SDLGetNativeSurface(SDL_Surface *surface) +{ + SDL_PixelFormat format; + SDL_Surface *new_surface; + + if (surface == NULL) + return NULL; + + if (backbuffer && backbuffer->surface) + { + format = *backbuffer->surface->format; + format.Amask = surface->format->Amask; // keep alpha channel + } + else + { + format = *surface->format; + } + + new_surface = SDL_ConvertSurface(surface, &format, 0); + + if (new_surface == NULL) + Error(ERR_EXIT, "SDL_ConvertSurface() failed: %s", SDL_GetError()); + + return new_surface; +} + +boolean SDLSetNativeSurface(SDL_Surface **surface) +{ + SDL_Surface *new_surface; + + if (surface == NULL || + *surface == NULL || + backbuffer == NULL || + backbuffer->surface == NULL) + return FALSE; + + // if pixel format already optimized for destination surface, do nothing + if (equalSDLPixelFormat((*surface)->format, backbuffer->surface->format)) + return FALSE; + + new_surface = SDLGetNativeSurface(*surface); + + SDL_FreeSurface(*surface); + + *surface = new_surface; + + return TRUE; +} + +#else + +SDL_Surface *SDLGetNativeSurface(SDL_Surface *surface) +{ + SDL_Surface *new_surface; + + if (surface == NULL) + return NULL; + + if (video.initialized) + new_surface = SDL_DisplayFormat(surface); + else + new_surface = SDL_ConvertSurface(surface, surface->format, SURFACE_FLAGS); + + if (new_surface == NULL) + Error(ERR_EXIT, "%s() failed: %s", + (video.initialized ? "SDL_DisplayFormat" : "SDL_ConvertSurface"), + SDL_GetError()); + + return new_surface; +} + +boolean SDLSetNativeSurface(SDL_Surface **surface) +{ + SDL_Surface *new_surface; + + if (surface == NULL || + *surface == NULL || + !video.initialized) + return FALSE; + + new_surface = SDLGetNativeSurface(*surface); + + SDL_FreeSurface(*surface); + + *surface = new_surface; + + return TRUE; +} + +#endif + +#if defined(TARGET_SDL2) +static SDL_Texture *SDLCreateTextureFromSurface(SDL_Surface *surface) +{ + SDL_Texture *texture = SDL_CreateTextureFromSurface(sdl_renderer, surface); + + if (texture == NULL) + Error(ERR_EXIT, "SDL_CreateTextureFromSurface() failed: %s", + SDL_GetError()); + + return texture; +} +#endif + +void SDLCreateBitmapTextures(Bitmap *bitmap) +{ +#if defined(TARGET_SDL2) + if (bitmap == NULL) + return; + + if (bitmap->texture) + SDL_DestroyTexture(bitmap->texture); + if (bitmap->texture_masked) + SDL_DestroyTexture(bitmap->texture_masked); + + bitmap->texture = SDLCreateTextureFromSurface(bitmap->surface); + bitmap->texture_masked = SDLCreateTextureFromSurface(bitmap->surface_masked); +#endif +} + +void SDLFreeBitmapTextures(Bitmap *bitmap) +{ +#if defined(TARGET_SDL2) + if (bitmap == NULL) + return; + + if (bitmap->texture) + SDL_DestroyTexture(bitmap->texture); + if (bitmap->texture_masked) + SDL_DestroyTexture(bitmap->texture_masked); + + bitmap->texture = NULL; + bitmap->texture_masked = NULL; +#endif +} + +void SDLInitVideoDisplay(void) { +#if !defined(TARGET_SDL2) + if (!strEqual(setup.system.sdl_videodriver, ARG_DEFAULT)) + SDL_putenv(getStringCat2("SDL_VIDEODRIVER=", setup.system.sdl_videodriver)); + + SDL_putenv("SDL_VIDEO_CENTERED=1"); +#endif + /* initialize SDL video */ - if (SDL_Init(SDL_INIT_VIDEO) < 0) - Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError()); + if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) + Error(ERR_EXIT, "SDL_InitSubSystem() failed: %s", SDL_GetError()); /* set default SDL depth */ +#if !defined(TARGET_SDL2) video.default_depth = SDL_GetVideoInfo()->vfmt->BitsPerPixel; - - /* set exit function to automatically cleanup SDL stuff after exit() */ - atexit(SDL_Quit); +#else + video.default_depth = 32; // (how to determine video depth in SDL2?) +#endif } -inline void SDLInitVideoBuffer(DrawBuffer *backbuffer, DrawWindow *window, - boolean fullscreen) +void SDLInitVideoBuffer(boolean fullscreen) { + video.window_scaling_percent = setup.window_scaling_percent; + video.window_scaling_quality = setup.window_scaling_quality; + + SDLSetScreenRenderingMode(setup.screen_rendering_mode); + +#if defined(TARGET_SDL2) + // SDL 2.0: support for (desktop) fullscreen mode available + video.fullscreen_available = TRUE; +#else + // SDL 1.2: no support for fullscreen mode in R'n'D anymore + video.fullscreen_available = FALSE; +#endif + /* open SDL video output device (window or fullscreen mode) */ - if (!SDLSetVideoMode(backbuffer, fullscreen)) + if (!SDLSetVideoMode(fullscreen)) Error(ERR_EXIT, "setting video mode failed"); + /* !!! SDL2 can only set the window icon if the window already exists !!! */ + /* set window icon */ + SDLSetWindowIcon(program.icon_filename); + /* set window and icon title */ +#if defined(TARGET_SDL2) + SDL_SetWindowTitle(sdl_window, program.window_title); +#else SDL_WM_SetCaption(program.window_title, program.window_title); +#endif /* SDL cannot directly draw to the visible video framebuffer like X11, but always uses a backbuffer, which is then blitted to the visible @@ -53,169 +427,2069 @@ inline void SDLInitVideoBuffer(DrawBuffer *backbuffer, DrawWindow *window, should never be drawn to directly, it would do no harm nevertheless. */ /* create additional (symbolic) buffer for double-buffering */ - *window = CreateBitmap(video.width, video.height, video.depth); + ReCreateBitmap(&window, video.width, video.height); +} + +static boolean SDLCreateScreen(boolean fullscreen) +{ + SDL_Surface *new_surface = NULL; + +#if defined(TARGET_SDL2) + int surface_flags_window = SURFACE_FLAGS | SDL_WINDOW_RESIZABLE; + int surface_flags_fullscreen = SURFACE_FLAGS | SDL_WINDOW_FULLSCREEN_DESKTOP; +#else + int surface_flags_window = SURFACE_FLAGS; + int surface_flags_fullscreen = SURFACE_FLAGS; // (no fullscreen in SDL 1.2) +#endif + +#if defined(TARGET_SDL2) +#if 1 + int renderer_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_TARGETTEXTURE; +#else + /* If SDL_CreateRenderer() is called from within a VirtualBox Windows VM + _without_ enabling 2D/3D acceleration and/or guest additions installed, + it will crash if flags are *not* set to SDL_RENDERER_SOFTWARE (because + it will try to use accelerated graphics and apparently fails miserably) */ + int renderer_flags = SDL_RENDERER_SOFTWARE; +#endif +#endif + + int width = video.width; + int height = video.height; + int surface_flags = (fullscreen ? surface_flags_fullscreen : + surface_flags_window); + + // default window size is unscaled + video.window_width = video.width; + video.window_height = video.height; + +#if defined(TARGET_SDL2) + + // store if initial screen mode is fullscreen mode when changing screen size + video.fullscreen_initial = fullscreen; + + float window_scaling_factor = (float)setup.window_scaling_percent / 100; + + video.window_width = window_scaling_factor * width; + video.window_height = window_scaling_factor * height; + + if (sdl_texture_stream) + { + SDL_DestroyTexture(sdl_texture_stream); + sdl_texture_stream = NULL; + } + + if (sdl_texture_target) + { + SDL_DestroyTexture(sdl_texture_target); + sdl_texture_target = NULL; + } + + if (!(fullscreen && fullscreen_enabled)) + { + if (sdl_renderer) + { + SDL_DestroyRenderer(sdl_renderer); + sdl_renderer = NULL; + } + + if (sdl_window) + { + SDL_DestroyWindow(sdl_window); + sdl_window = NULL; + } + } + + if (sdl_window == NULL) + sdl_window = SDL_CreateWindow(program.window_title, + SDL_WINDOWPOS_CENTERED, + SDL_WINDOWPOS_CENTERED, + video.window_width, + video.window_height, + surface_flags); + + if (sdl_window != NULL) + { + if (sdl_renderer == NULL) + sdl_renderer = SDL_CreateRenderer(sdl_window, -1, renderer_flags); + + if (sdl_renderer != NULL) + { + SDL_RenderSetLogicalSize(sdl_renderer, width, height); + // SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear"); + SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, setup.window_scaling_quality); + + sdl_texture_stream = SDL_CreateTexture(sdl_renderer, + SDL_PIXELFORMAT_ARGB8888, + SDL_TEXTUREACCESS_STREAMING, + width, height); + + if (SDL_RenderTargetSupported(sdl_renderer)) + sdl_texture_target = SDL_CreateTexture(sdl_renderer, + SDL_PIXELFORMAT_ARGB8888, + SDL_TEXTUREACCESS_TARGET, + width, height); + + if (sdl_texture_stream != NULL) + { + // use SDL default values for RGB masks and no alpha channel + new_surface = SDL_CreateRGBSurface(0, width, height, 32, 0,0,0, 0); + + if (new_surface == NULL) + Error(ERR_WARN, "SDL_CreateRGBSurface() failed: %s", SDL_GetError()); + } + else + { + Error(ERR_WARN, "SDL_CreateTexture() failed: %s", SDL_GetError()); + } + } + else + { + Error(ERR_WARN, "SDL_CreateRenderer() failed: %s", SDL_GetError()); + } + } + else + { + Error(ERR_WARN, "SDL_CreateWindow() failed: %s", SDL_GetError()); + } + +#else // TARGET_SDL + + if (gfx.final_screen_bitmap == NULL) + gfx.final_screen_bitmap = CreateBitmapStruct(); + + gfx.final_screen_bitmap->width = width; + gfx.final_screen_bitmap->height = height; + + gfx.final_screen_bitmap->surface = + SDL_SetVideoMode(width, height, video.depth, surface_flags); + + if (gfx.final_screen_bitmap->surface != NULL) + { + new_surface = + SDL_CreateRGBSurface(surface_flags, width, height, video.depth, 0,0,0, 0); + + if (new_surface == NULL) + Error(ERR_WARN, "SDL_CreateRGBSurface() failed: %s", SDL_GetError()); + +#if 0 + new_surface = gfx.final_screen_bitmap->surface; + gfx.final_screen_bitmap = NULL; +#endif + + } + else + { + Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError()); + } +#endif + +#if defined(TARGET_SDL2) + // store fullscreen state ("video.fullscreen_enabled" may not reflect this!) + if (new_surface != NULL) + fullscreen_enabled = fullscreen; +#endif + + if (backbuffer == NULL) + backbuffer = CreateBitmapStruct(); + + backbuffer->width = video.width; + backbuffer->height = video.height; + + if (backbuffer->surface) + SDL_FreeSurface(backbuffer->surface); + + backbuffer->surface = new_surface; + + return (new_surface != NULL); } -inline boolean SDLSetVideoMode(DrawBuffer *backbuffer, boolean fullscreen) +boolean SDLSetVideoMode(boolean fullscreen) { - boolean success = TRUE; - int surface_flags = SDL_HWSURFACE | (fullscreen ? SDL_FULLSCREEN : 0); + boolean success = FALSE; + + SetWindowTitle(); if (fullscreen && !video.fullscreen_enabled && video.fullscreen_available) { /* switch display to fullscreen mode, if available */ - DrawWindow window_old = *backbuffer; - DrawWindow window_new = CreateBitmapStruct(); + success = SDLCreateScreen(TRUE); - if ((window_new->surface = SDL_SetVideoMode(video.width, video.height, - video.depth, surface_flags)) - == NULL) + if (!success) { - /* switching display to fullscreen mode failed */ - Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError()); - - /* do not try it again */ + /* switching display to fullscreen mode failed -- do not try it again */ video.fullscreen_available = FALSE; - success = FALSE; } else { - if (window_old) - FreeBitmap(window_old); - *backbuffer = window_new; - video.fullscreen_enabled = TRUE; - success = TRUE; } } - if ((!fullscreen && video.fullscreen_enabled) || !*backbuffer) + if ((!fullscreen && video.fullscreen_enabled) || !success) { /* switch display to window mode */ - DrawWindow window_old = *backbuffer; - DrawWindow window_new = CreateBitmapStruct(); + success = SDLCreateScreen(FALSE); - if ((window_new->surface = SDL_SetVideoMode(video.width, video.height, - video.depth, surface_flags)) - == NULL) + if (!success) { /* switching display to window mode failed -- should not happen */ - Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError()); - - success = FALSE; } else { - if (window_old) - FreeBitmap(window_old); - *backbuffer = window_new; - video.fullscreen_enabled = FALSE; - success = TRUE; + video.window_scaling_percent = setup.window_scaling_percent; + video.window_scaling_quality = setup.window_scaling_quality; + + SDLSetScreenRenderingMode(setup.screen_rendering_mode); } } - return success; -} - -inline void SDLCopyArea(Bitmap src_bitmap, Bitmap dst_bitmap, - int src_x, int src_y, - int width, int height, - int dst_x, int dst_y, int copy_mode) -{ - Bitmap real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap); - SDL_Rect src_rect, dst_rect; +#if defined(TARGET_SDL2) + SDLRedrawWindow(); // map window +#endif - src_rect.x = src_x; - src_rect.y = src_y; - src_rect.w = width; - src_rect.h = height; +#ifdef DEBUG +#if defined(PLATFORM_WIN32) + // experimental drag and drop code - dst_rect.x = dst_x; - dst_rect.y = dst_y; - dst_rect.w = width; - dst_rect.h = height; + SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE); - if (src_bitmap != backbuffer || dst_bitmap != window) - SDL_BlitSurface((copy_mode == SDLCOPYAREA_MASKED ? - src_bitmap->surface_masked : src_bitmap->surface), - &src_rect, real_dst_bitmap->surface, &dst_rect); + { + SDL_SysWMinfo wminfo; + HWND hwnd; + boolean wminfo_success = FALSE; - if (dst_bitmap == window) - SDL_UpdateRect(backbuffer->surface, dst_x, dst_y, width, height); -} + SDL_VERSION(&wminfo.version); +#if defined(TARGET_SDL2) + if (sdl_window) + wminfo_success = SDL_GetWindowWMInfo(sdl_window, &wminfo); +#else + wminfo_success = (SDL_GetWMInfo(&wminfo) == 1); +#endif -inline void SDLFillRectangle(Bitmap dst_bitmap, int x, int y, - int width, int height, unsigned int color) -{ - Bitmap real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap); - SDL_Rect rect; - unsigned int color_r = (color >> 16) && 0xff; - unsigned int color_g = (color >> 8) && 0xff; - unsigned int color_b = (color >> 0) && 0xff; + if (wminfo_success) + { +#if defined(TARGET_SDL2) + hwnd = wminfo.info.win.window; +#else + hwnd = wminfo.window; +#endif - rect.x = x; - rect.y = y; - rect.w = width; - rect.h = height; + DragAcceptFiles(hwnd, TRUE); + } + } +#endif +#endif - SDL_FillRect(real_dst_bitmap->surface, &rect, - SDL_MapRGB(real_dst_bitmap->surface->format, - color_r, color_g, color_b)); + return success; +} - if (dst_bitmap == window) - SDL_UpdateRect(backbuffer->surface, x, y, width, height); +void SDLSetWindowTitle() +{ +#if defined(TARGET_SDL2) + SDL_SetWindowTitle(sdl_window, program.window_title); +#else + SDL_WM_SetCaption(program.window_title, program.window_title); +#endif } -inline void SDLDrawSimpleLine(SDL_Surface *surface, int from_x, int from_y, - int to_x, int to_y, unsigned int color) +#if defined(TARGET_SDL2) +void SDLSetWindowScaling(int window_scaling_percent) { - SDL_Rect rect; - unsigned int color_r = (color >> 16) & 0xff; - unsigned int color_g = (color >> 8) & 0xff; - unsigned int color_b = (color >> 0) & 0xff; + if (sdl_window == NULL) + return; - if (from_x > to_x) - swap_numbers(&from_x, &to_x); + float window_scaling_factor = (float)window_scaling_percent / 100; + int new_window_width = (int)(window_scaling_factor * video.width); + int new_window_height = (int)(window_scaling_factor * video.height); - if (from_y > to_y) - swap_numbers(&from_y, &to_y); + SDL_SetWindowSize(sdl_window, new_window_width, new_window_height); - rect.x = from_x; - rect.y = from_y; - rect.w = (to_x - from_x + 1); - rect.h = (to_y - from_y + 1); + video.window_scaling_percent = window_scaling_percent; + video.window_width = new_window_width; + video.window_height = new_window_height; - SDL_FillRect(surface, &rect, - SDL_MapRGB(surface->format, color_r, color_g, color_b)); + SetWindowTitle(); } -inline boolean SDLOpenAudio(void) +void SDLSetWindowScalingQuality(char *window_scaling_quality) { - if (SDL_Init(SDL_INIT_AUDIO) < 0) + SDL_Texture *new_texture; + + if (sdl_texture_stream == NULL) + return; + + SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, window_scaling_quality); + + new_texture = SDL_CreateTexture(sdl_renderer, + SDL_PIXELFORMAT_ARGB8888, + SDL_TEXTUREACCESS_STREAMING, + video.width, video.height); + + if (new_texture != NULL) { - Error(ERR_WARN, "SDL_Init() failed: %s", SDL_GetError()); - return FALSE; + SDL_DestroyTexture(sdl_texture_stream); + + sdl_texture_stream = new_texture; } - if (Mix_OpenAudio(22050, AUDIO_S16, 2, 512) < 0) + if (SDL_RenderTargetSupported(sdl_renderer)) + new_texture = SDL_CreateTexture(sdl_renderer, + SDL_PIXELFORMAT_ARGB8888, + SDL_TEXTUREACCESS_TARGET, + video.width, video.height); + else + new_texture = NULL; + + if (new_texture != NULL) { - Error(ERR_WARN, "Mix_OpenAudio() failed: %s", SDL_GetError()); - return FALSE; + SDL_DestroyTexture(sdl_texture_target); + + sdl_texture_target = new_texture; + } + + SDLRedrawWindow(); + + video.window_scaling_quality = window_scaling_quality; +} + +void SDLSetWindowFullscreen(boolean fullscreen) +{ + if (sdl_window == NULL) + return; + + int flags = (fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0); + + if (SDL_SetWindowFullscreen(sdl_window, flags) == 0) + video.fullscreen_enabled = fullscreen_enabled = fullscreen; + + // if screen size was changed in fullscreen mode, correct desktop window size + if (!fullscreen && video.fullscreen_initial) + { + SDLSetWindowScaling(setup.window_scaling_percent); + SDL_SetWindowPosition(sdl_window, + SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED); + + video.fullscreen_initial = FALSE; + } +} +#endif + +void SDLSetScreenRenderingMode(char *screen_rendering_mode) +{ +#if defined(TARGET_SDL2) + video.screen_rendering_mode = + (strEqual(screen_rendering_mode, STR_SPECIAL_RENDERING_BITMAP) ? + SPECIAL_RENDERING_BITMAP : + strEqual(screen_rendering_mode, STR_SPECIAL_RENDERING_TARGET) ? + SPECIAL_RENDERING_TARGET: + strEqual(screen_rendering_mode, STR_SPECIAL_RENDERING_DOUBLE) ? + SPECIAL_RENDERING_DOUBLE : SPECIAL_RENDERING_OFF); +#else + video.screen_rendering_mode = SPECIAL_RENDERING_BITMAP; +#endif +} + +void SDLRedrawWindow() +{ + UpdateScreen_WithoutFrameDelay(NULL); +} + +void SDLCreateBitmapContent(Bitmap *bitmap, int width, int height, + int depth) +{ + SDL_Surface *surface = + SDL_CreateRGBSurface(SURFACE_FLAGS, width, height, depth, 0,0,0, 0); + + if (surface == NULL) + Error(ERR_EXIT, "SDL_CreateRGBSurface() failed: %s", SDL_GetError()); + + SDLSetNativeSurface(&surface); + + bitmap->surface = surface; +} + +void SDLFreeBitmapPointers(Bitmap *bitmap) +{ + if (bitmap->surface) + SDL_FreeSurface(bitmap->surface); + if (bitmap->surface_masked) + SDL_FreeSurface(bitmap->surface_masked); + + bitmap->surface = NULL; + bitmap->surface_masked = NULL; + +#if defined(TARGET_SDL2) + if (bitmap->texture) + SDL_DestroyTexture(bitmap->texture); + if (bitmap->texture_masked) + SDL_DestroyTexture(bitmap->texture_masked); + + bitmap->texture = NULL; + bitmap->texture_masked = NULL; +#endif +} + +void SDLCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap, + int src_x, int src_y, int width, int height, + int dst_x, int dst_y, int mask_mode) +{ + Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap); + SDL_Rect src_rect, dst_rect; + + src_rect.x = src_x; + src_rect.y = src_y; + src_rect.w = width; + src_rect.h = height; + + dst_rect.x = dst_x; + dst_rect.y = dst_y; + dst_rect.w = width; + dst_rect.h = height; + + // if (src_bitmap != backbuffer || dst_bitmap != window) + if (!(src_bitmap == backbuffer && dst_bitmap == window)) + SDL_BlitSurface((mask_mode == BLIT_MASKED ? + src_bitmap->surface_masked : src_bitmap->surface), + &src_rect, real_dst_bitmap->surface, &dst_rect); + + if (dst_bitmap == window) + UpdateScreen_WithFrameDelay(&dst_rect); +} + +void SDLBlitTexture(Bitmap *bitmap, + int src_x, int src_y, int width, int height, + int dst_x, int dst_y, int mask_mode) +{ +#if defined(TARGET_SDL2) + SDL_Texture *texture; + SDL_Rect src_rect; + SDL_Rect dst_rect; + + texture = + (mask_mode == BLIT_MASKED ? bitmap->texture_masked : bitmap->texture); + + if (texture == NULL) + return; + + src_rect.x = src_x; + src_rect.y = src_y; + src_rect.w = width; + src_rect.h = height; + + dst_rect.x = dst_x; + dst_rect.y = dst_y; + dst_rect.w = width; + dst_rect.h = height; + + SDL_RenderCopy(sdl_renderer, texture, &src_rect, &dst_rect); +#endif +} + +void SDLFillRectangle(Bitmap *dst_bitmap, int x, int y, int width, int height, + Uint32 color) +{ + Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap); + SDL_Rect rect; + + rect.x = x; + rect.y = y; + rect.w = width; + rect.h = height; + + SDL_FillRect(real_dst_bitmap->surface, &rect, color); + + if (dst_bitmap == window) + UpdateScreen_WithFrameDelay(&rect); +} + +void PrepareFadeBitmap(int draw_target) +{ + Bitmap *fade_bitmap = + (draw_target == DRAW_TO_FADE_SOURCE ? gfx.fade_bitmap_source : + draw_target == DRAW_TO_FADE_TARGET ? gfx.fade_bitmap_target : NULL); + + if (fade_bitmap == NULL) + return; + + // copy backbuffer to fading buffer + BlitBitmap(backbuffer, fade_bitmap, 0, 0, gfx.win_xsize, gfx.win_ysize, 0, 0); + + // add border and animations to fading buffer + FinalizeScreen(draw_target); +} + +void SDLFadeRectangle(int x, int y, int width, int height, + int fade_mode, int fade_delay, int post_delay, + void (*draw_border_function)(void)) +{ + SDL_Surface *surface_backup = gfx.fade_bitmap_backup->surface; + SDL_Surface *surface_source = gfx.fade_bitmap_source->surface; + SDL_Surface *surface_target = gfx.fade_bitmap_target->surface; + SDL_Surface *surface_black = gfx.fade_bitmap_black->surface; + SDL_Surface *surface_screen = backbuffer->surface; + SDL_Rect src_rect, dst_rect; + SDL_Rect dst_rect2; + int src_x = x, src_y = y; + int dst_x = x, dst_y = y; + unsigned int time_last, time_current; + + // store function for drawing global masked border + void (*draw_global_border_function)(int) = gfx.draw_global_border_function; + + // deactivate drawing of global border while fading, if needed + if (draw_border_function == NULL) + gfx.draw_global_border_function = NULL; + + src_rect.x = src_x; + src_rect.y = src_y; + src_rect.w = width; + src_rect.h = height; + + dst_rect.x = dst_x; + dst_rect.y = dst_y; + dst_rect.w = width; /* (ignored) */ + dst_rect.h = height; /* (ignored) */ + + dst_rect2 = dst_rect; + + // before fading in, store backbuffer (without animation graphics) + if (fade_mode & (FADE_TYPE_FADE_IN | FADE_TYPE_TRANSFORM)) + SDL_BlitSurface(surface_screen, &dst_rect, surface_backup, &src_rect); + + /* copy source and target surfaces to temporary surfaces for fading */ + if (fade_mode & FADE_TYPE_TRANSFORM) + { + // (source and target fading buffer already prepared) + } + else if (fade_mode & FADE_TYPE_FADE_IN) + { + // (target fading buffer already prepared) + SDL_BlitSurface(surface_black, &src_rect, surface_source, &src_rect); + } + else /* FADE_TYPE_FADE_OUT */ + { + // (source fading buffer already prepared) + SDL_BlitSurface(surface_black, &src_rect, surface_target, &src_rect); + } + + time_current = SDL_GetTicks(); + + if (fade_mode == FADE_MODE_MELT) + { + boolean done = FALSE; + int melt_pixels = 2; + int melt_columns = width / melt_pixels; + int ypos[melt_columns]; + int max_steps = height / 8 + 32; + int steps_done = 0; + float steps = 0; + int i; + + SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect); +#if defined(TARGET_SDL2) + SDL_SetSurfaceBlendMode(surface_target, SDL_BLENDMODE_NONE); +#else + SDL_SetAlpha(surface_target, 0, 0); /* disable alpha blending */ +#endif + + ypos[0] = -GetSimpleRandom(16); + + for (i = 1 ; i < melt_columns; i++) + { + int r = GetSimpleRandom(3) - 1; /* randomly choose from { -1, 0, -1 } */ + + ypos[i] = ypos[i - 1] + r; + + if (ypos[i] > 0) + ypos[i] = 0; + else + if (ypos[i] == -16) + ypos[i] = -15; + } + + while (!done) + { + int steps_final; + + time_last = time_current; + time_current = SDL_GetTicks(); + steps += max_steps * ((float)(time_current - time_last) / fade_delay); + steps_final = MIN(MAX(0, steps), max_steps); + + steps_done++; + + done = (steps_done >= steps_final); + + for (i = 0 ; i < melt_columns; i++) + { + if (ypos[i] < 0) + { + ypos[i]++; + + done = FALSE; + } + else if (ypos[i] < height) + { + int y1 = 16; + int y2 = 8; + int y3 = 8; + int dy = (ypos[i] < y1) ? ypos[i] + 1 : y2 + GetSimpleRandom(y3); + + if (ypos[i] + dy >= height) + dy = height - ypos[i]; + + /* copy part of (appearing) target surface to upper area */ + src_rect.x = src_x + i * melt_pixels; + // src_rect.y = src_y + ypos[i]; + src_rect.y = src_y; + src_rect.w = melt_pixels; + // src_rect.h = dy; + src_rect.h = ypos[i] + dy; + + dst_rect.x = dst_x + i * melt_pixels; + // dst_rect.y = dst_y + ypos[i]; + dst_rect.y = dst_y; + + if (steps_done >= steps_final) + SDL_BlitSurface(surface_target, &src_rect, + surface_screen, &dst_rect); + + ypos[i] += dy; + + /* copy part of (disappearing) source surface to lower area */ + src_rect.x = src_x + i * melt_pixels; + src_rect.y = src_y; + src_rect.w = melt_pixels; + src_rect.h = height - ypos[i]; + + dst_rect.x = dst_x + i * melt_pixels; + dst_rect.y = dst_y + ypos[i]; + + if (steps_done >= steps_final) + SDL_BlitSurface(surface_source, &src_rect, + surface_screen, &dst_rect); + + done = FALSE; + } + else + { + src_rect.x = src_x + i * melt_pixels; + src_rect.y = src_y; + src_rect.w = melt_pixels; + src_rect.h = height; + + dst_rect.x = dst_x + i * melt_pixels; + dst_rect.y = dst_y; + + if (steps_done >= steps_final) + SDL_BlitSurface(surface_target, &src_rect, + surface_screen, &dst_rect); + } + } + + if (steps_done >= steps_final) + { + if (draw_border_function != NULL) + draw_border_function(); + + UpdateScreen_WithFrameDelay(&dst_rect2); + } + } + } + else if (fade_mode == FADE_MODE_CURTAIN) + { + float xx; + int xx_final; + int xx_size = width / 2; + + SDL_BlitSurface(surface_target, &src_rect, surface_screen, &dst_rect); +#if defined(TARGET_SDL2) + SDL_SetSurfaceBlendMode(surface_source, SDL_BLENDMODE_NONE); +#else + SDL_SetAlpha(surface_source, 0, 0); /* disable alpha blending */ +#endif + + for (xx = 0; xx < xx_size;) + { + time_last = time_current; + time_current = SDL_GetTicks(); + xx += xx_size * ((float)(time_current - time_last) / fade_delay); + xx_final = MIN(MAX(0, xx), xx_size); + + src_rect.x = src_x; + src_rect.y = src_y; + src_rect.w = width; + src_rect.h = height; + + dst_rect.x = dst_x; + dst_rect.y = dst_y; + + /* draw new (target) image to screen buffer */ + SDL_BlitSurface(surface_target, &src_rect, surface_screen, &dst_rect); + + if (xx_final < xx_size) + { + src_rect.w = xx_size - xx_final; + src_rect.h = height; + + /* draw old (source) image to screen buffer (left side) */ + + src_rect.x = src_x + xx_final; + dst_rect.x = dst_x; + + SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect); + + /* draw old (source) image to screen buffer (right side) */ + + src_rect.x = src_x + xx_size; + dst_rect.x = dst_x + xx_size + xx_final; + + SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect); + } + + if (draw_border_function != NULL) + draw_border_function(); + + /* only update the region of the screen that is affected from fading */ + UpdateScreen_WithFrameDelay(&dst_rect2); + } + } + else /* fading in, fading out or cross-fading */ + { + float alpha; + int alpha_final; + + for (alpha = 0.0; alpha < 255.0;) + { + time_last = time_current; + time_current = SDL_GetTicks(); + alpha += 255 * ((float)(time_current - time_last) / fade_delay); + alpha_final = MIN(MAX(0, alpha), 255); + + /* draw existing (source) image to screen buffer */ + SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect); + + /* draw new (target) image to screen buffer using alpha blending */ +#if defined(TARGET_SDL2) + SDL_SetSurfaceAlphaMod(surface_target, alpha_final); + SDL_SetSurfaceBlendMode(surface_target, SDL_BLENDMODE_BLEND); +#else + SDL_SetAlpha(surface_target, SDL_SRCALPHA, alpha_final); +#endif + SDL_BlitSurface(surface_target, &src_rect, surface_screen, &dst_rect); + + if (draw_border_function != NULL) + draw_border_function(); + + /* only update the region of the screen that is affected from fading */ + UpdateScreen_WithFrameDelay(&dst_rect); + } + } + + if (post_delay > 0) + { + unsigned int time_post_delay; + + time_current = SDL_GetTicks(); + time_post_delay = time_current + post_delay; + + while (time_current < time_post_delay) + { + // updating the screen contains waiting for frame delay (non-busy) + UpdateScreen_WithFrameDelay(NULL); + + time_current = SDL_GetTicks(); + } + } + + // restore function for drawing global masked border + gfx.draw_global_border_function = draw_global_border_function; + + // after fading in, restore backbuffer (without animation graphics) + if (fade_mode & (FADE_TYPE_FADE_IN | FADE_TYPE_TRANSFORM)) + SDL_BlitSurface(surface_backup, &dst_rect, surface_screen, &src_rect); +} + +void SDLDrawSimpleLine(Bitmap *dst_bitmap, int from_x, int from_y, + int to_x, int to_y, Uint32 color) +{ + SDL_Surface *surface = dst_bitmap->surface; + SDL_Rect rect; + + if (from_x > to_x) + swap_numbers(&from_x, &to_x); + + if (from_y > to_y) + swap_numbers(&from_y, &to_y); + + rect.x = from_x; + rect.y = from_y; + rect.w = (to_x - from_x + 1); + rect.h = (to_y - from_y + 1); + + SDL_FillRect(surface, &rect, color); +} + +void SDLDrawLine(Bitmap *dst_bitmap, int from_x, int from_y, + int to_x, int to_y, Uint32 color) +{ + sge_Line(dst_bitmap->surface, from_x, from_y, to_x, to_y, color); +} + +#if ENABLE_UNUSED_CODE +void SDLDrawLines(SDL_Surface *surface, struct XY *points, + int num_points, Uint32 color) +{ + int i, x, y; + int line_width = 4; + + for (i = 0; i < num_points - 1; i++) + { + for (x = 0; x < line_width; x++) + { + for (y = 0; y < line_width; y++) + { + int dx = x - line_width / 2; + int dy = y - line_width / 2; + + if ((x == 0 && y == 0) || + (x == 0 && y == line_width - 1) || + (x == line_width - 1 && y == 0) || + (x == line_width - 1 && y == line_width - 1)) + continue; + + sge_Line(surface, points[i].x + dx, points[i].y + dy, + points[i+1].x + dx, points[i+1].y + dy, color); + } + } + } +} +#endif + +Pixel SDLGetPixel(Bitmap *src_bitmap, int x, int y) +{ + SDL_Surface *surface = src_bitmap->surface; + + switch (surface->format->BytesPerPixel) + { + case 1: /* assuming 8-bpp */ + { + return *((Uint8 *)surface->pixels + y * surface->pitch + x); + } + break; + + case 2: /* probably 15-bpp or 16-bpp */ + { + return *((Uint16 *)surface->pixels + y * surface->pitch / 2 + x); + } + break; + + case 3: /* slow 24-bpp mode; usually not used */ + { + /* does this work? */ + Uint8 *pix = (Uint8 *)surface->pixels + y * surface->pitch + x * 3; + Uint32 color = 0; + int shift; + + shift = surface->format->Rshift; + color |= *(pix + shift / 8) >> shift; + shift = surface->format->Gshift; + color |= *(pix + shift / 8) >> shift; + shift = surface->format->Bshift; + color |= *(pix + shift / 8) >> shift; + + return color; + } + break; + + case 4: /* probably 32-bpp */ + { + return *((Uint32 *)surface->pixels + y * surface->pitch / 4 + x); + } + break; + } + + return 0; +} + + +/* ========================================================================= */ +/* The following functions were taken from the SGE library */ +/* (SDL Graphics Extension Library) by Anders Lindström */ +/* http://www.etek.chalmers.se/~e8cal1/sge/index.html */ +/* ========================================================================= */ + +void _PutPixel(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color) +{ + if (x >= 0 && x <= surface->w - 1 && y >= 0 && y <= surface->h - 1) + { + switch (surface->format->BytesPerPixel) + { + case 1: + { + /* Assuming 8-bpp */ + *((Uint8 *)surface->pixels + y*surface->pitch + x) = color; + } + break; + + case 2: + { + /* Probably 15-bpp or 16-bpp */ + *((Uint16 *)surface->pixels + y*surface->pitch/2 + x) = color; + } + break; + + case 3: + { + /* Slow 24-bpp mode, usually not used */ + Uint8 *pix; + int shift; + + /* Gack - slow, but endian correct */ + pix = (Uint8 *)surface->pixels + y * surface->pitch + x*3; + shift = surface->format->Rshift; + *(pix+shift/8) = color>>shift; + shift = surface->format->Gshift; + *(pix+shift/8) = color>>shift; + shift = surface->format->Bshift; + *(pix+shift/8) = color>>shift; + } + break; + + case 4: + { + /* Probably 32-bpp */ + *((Uint32 *)surface->pixels + y*surface->pitch/4 + x) = color; + } + break; + } + } +} + +void _PutPixelRGB(SDL_Surface *surface, Sint16 x, Sint16 y, + Uint8 R, Uint8 G, Uint8 B) +{ + _PutPixel(surface, x, y, SDL_MapRGB(surface->format, R, G, B)); +} + +void _PutPixel8(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color) +{ + *((Uint8 *)surface->pixels + y*surface->pitch + x) = color; +} + +void _PutPixel16(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color) +{ + *((Uint16 *)surface->pixels + y*surface->pitch/2 + x) = color; +} + +void _PutPixel24(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color) +{ + Uint8 *pix; + int shift; + + /* Gack - slow, but endian correct */ + pix = (Uint8 *)surface->pixels + y * surface->pitch + x*3; + shift = surface->format->Rshift; + *(pix+shift/8) = color>>shift; + shift = surface->format->Gshift; + *(pix+shift/8) = color>>shift; + shift = surface->format->Bshift; + *(pix+shift/8) = color>>shift; +} + +void _PutPixel32(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color) +{ + *((Uint32 *)surface->pixels + y*surface->pitch/4 + x) = color; +} + +void _PutPixelX(SDL_Surface *dest,Sint16 x,Sint16 y,Uint32 color) +{ + switch (dest->format->BytesPerPixel) + { + case 1: + *((Uint8 *)dest->pixels + y*dest->pitch + x) = color; + break; + + case 2: + *((Uint16 *)dest->pixels + y*dest->pitch/2 + x) = color; + break; + + case 3: + _PutPixel24(dest,x,y,color); + break; + + case 4: + *((Uint32 *)dest->pixels + y*dest->pitch/4 + x) = color; + break; + } +} + +void sge_PutPixel(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color) +{ + if (SDL_MUSTLOCK(surface)) + { + if (SDL_LockSurface(surface) < 0) + { + return; + } + } + + _PutPixel(surface, x, y, color); + + if (SDL_MUSTLOCK(surface)) + { + SDL_UnlockSurface(surface); + } +} + +void sge_PutPixelRGB(SDL_Surface *surface, Sint16 x, Sint16 y, + Uint8 r, Uint8 g, Uint8 b) +{ + sge_PutPixel(surface, x, y, SDL_MapRGB(surface->format, r, g, b)); +} + +Sint32 sge_CalcYPitch(SDL_Surface *dest, Sint16 y) +{ + if (y >= 0 && y <= dest->h - 1) + { + switch (dest->format->BytesPerPixel) + { + case 1: + return y*dest->pitch; + break; + + case 2: + return y*dest->pitch/2; + break; + + case 3: + return y*dest->pitch; + break; + + case 4: + return y*dest->pitch/4; + break; + } + } + + return -1; +} + +void sge_pPutPixel(SDL_Surface *surface, Sint16 x, Sint32 ypitch, Uint32 color) +{ + if (x >= 0 && x <= surface->w - 1 && ypitch >= 0) + { + switch (surface->format->BytesPerPixel) + { + case 1: + { + /* Assuming 8-bpp */ + *((Uint8 *)surface->pixels + ypitch + x) = color; + } + break; + + case 2: + { + /* Probably 15-bpp or 16-bpp */ + *((Uint16 *)surface->pixels + ypitch + x) = color; + } + break; + + case 3: + { + /* Slow 24-bpp mode, usually not used */ + Uint8 *pix; + int shift; + + /* Gack - slow, but endian correct */ + pix = (Uint8 *)surface->pixels + ypitch + x*3; + shift = surface->format->Rshift; + *(pix+shift/8) = color>>shift; + shift = surface->format->Gshift; + *(pix+shift/8) = color>>shift; + shift = surface->format->Bshift; + *(pix+shift/8) = color>>shift; + } + break; + + case 4: + { + /* Probably 32-bpp */ + *((Uint32 *)surface->pixels + ypitch + x) = color; + } + break; + } + } +} + +void sge_HLine(SDL_Surface *Surface, Sint16 x1, Sint16 x2, Sint16 y, + Uint32 Color) +{ + SDL_Rect l; + + if (SDL_MUSTLOCK(Surface)) + { + if (SDL_LockSurface(Surface) < 0) + { + return; + } + } + + if (x1 > x2) + { + Sint16 tmp = x1; + x1 = x2; + x2 = tmp; + } + + /* Do the clipping */ + if (y < 0 || y > Surface->h - 1 || x1 > Surface->w - 1 || x2 < 0) + return; + if (x1 < 0) + x1 = 0; + if (x2 > Surface->w - 1) + x2 = Surface->w - 1; + + l.x = x1; + l.y = y; + l.w = x2 - x1 + 1; + l.h = 1; + + SDL_FillRect(Surface, &l, Color); + + if (SDL_MUSTLOCK(Surface)) + { + SDL_UnlockSurface(Surface); + } +} + +void sge_HLineRGB(SDL_Surface *Surface, Sint16 x1, Sint16 x2, Sint16 y, + Uint8 R, Uint8 G, Uint8 B) +{ + sge_HLine(Surface, x1, x2, y, SDL_MapRGB(Surface->format, R, G, B)); +} + +void _HLine(SDL_Surface *Surface, Sint16 x1, Sint16 x2, Sint16 y, Uint32 Color) +{ + SDL_Rect l; + + if (x1 > x2) + { + Sint16 tmp = x1; + x1 = x2; + x2 = tmp; + } + + /* Do the clipping */ + if (y < 0 || y > Surface->h - 1 || x1 > Surface->w - 1 || x2 < 0) + return; + if (x1 < 0) + x1 = 0; + if (x2 > Surface->w - 1) + x2 = Surface->w - 1; + + l.x = x1; + l.y = y; + l.w = x2 - x1 + 1; + l.h = 1; + + SDL_FillRect(Surface, &l, Color); +} + +void sge_VLine(SDL_Surface *Surface, Sint16 x, Sint16 y1, Sint16 y2, + Uint32 Color) +{ + SDL_Rect l; + + if (SDL_MUSTLOCK(Surface)) + { + if (SDL_LockSurface(Surface) < 0) + { + return; + } + } + + if (y1 > y2) + { + Sint16 tmp = y1; + y1 = y2; + y2 = tmp; + } + + /* Do the clipping */ + if (x < 0 || x > Surface->w - 1 || y1 > Surface->h - 1 || y2 < 0) + return; + if (y1 < 0) + y1 = 0; + if (y2 > Surface->h - 1) + y2 = Surface->h - 1; + + l.x = x; + l.y = y1; + l.w = 1; + l.h = y2 - y1 + 1; + + SDL_FillRect(Surface, &l, Color); + + if (SDL_MUSTLOCK(Surface)) + { + SDL_UnlockSurface(Surface); + } +} + +void sge_VLineRGB(SDL_Surface *Surface, Sint16 x, Sint16 y1, Sint16 y2, + Uint8 R, Uint8 G, Uint8 B) +{ + sge_VLine(Surface, x, y1, y2, SDL_MapRGB(Surface->format, R, G, B)); +} + +void _VLine(SDL_Surface *Surface, Sint16 x, Sint16 y1, Sint16 y2, Uint32 Color) +{ + SDL_Rect l; + + if (y1 > y2) + { + Sint16 tmp = y1; + y1 = y2; + y2 = tmp; + } + + /* Do the clipping */ + if (x < 0 || x > Surface->w - 1 || y1 > Surface->h - 1 || y2 < 0) + return; + if (y1 < 0) + y1 = 0; + if (y2 > Surface->h - 1) + y2 = Surface->h - 1; + + l.x = x; + l.y = y1; + l.w = 1; + l.h = y2 - y1 + 1; + + SDL_FillRect(Surface, &l, Color); +} + +void sge_DoLine(SDL_Surface *Surface, Sint16 x1, Sint16 y1, + Sint16 x2, Sint16 y2, Uint32 Color, + void Callback(SDL_Surface *Surf, Sint16 X, Sint16 Y, + Uint32 Color)) +{ + Sint16 dx, dy, sdx, sdy, x, y, px, py; + + dx = x2 - x1; + dy = y2 - y1; + + sdx = (dx < 0) ? -1 : 1; + sdy = (dy < 0) ? -1 : 1; + + dx = sdx * dx + 1; + dy = sdy * dy + 1; + + x = y = 0; + + px = x1; + py = y1; + + if (dx >= dy) + { + for (x = 0; x < dx; x++) + { + Callback(Surface, px, py, Color); + + y += dy; + if (y >= dx) + { + y -= dx; + py += sdy; + } + + px += sdx; + } + } + else + { + for (y = 0; y < dy; y++) + { + Callback(Surface, px, py, Color); + + x += dx; + if (x >= dy) + { + x -= dy; + px += sdx; + } + + py += sdy; + } + } +} + +void sge_DoLineRGB(SDL_Surface *Surface, Sint16 X1, Sint16 Y1, + Sint16 X2, Sint16 Y2, Uint8 R, Uint8 G, Uint8 B, + void Callback(SDL_Surface *Surf, Sint16 X, Sint16 Y, + Uint32 Color)) +{ + sge_DoLine(Surface, X1, Y1, X2, Y2, + SDL_MapRGB(Surface->format, R, G, B), Callback); +} + +void sge_Line(SDL_Surface *Surface, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, + Uint32 Color) +{ + if (SDL_MUSTLOCK(Surface)) + { + if (SDL_LockSurface(Surface) < 0) + return; + } + + /* Draw the line */ + sge_DoLine(Surface, x1, y1, x2, y2, Color, _PutPixel); + + /* unlock the display */ + if (SDL_MUSTLOCK(Surface)) + { + SDL_UnlockSurface(Surface); + } +} + +void sge_LineRGB(SDL_Surface *Surface, Sint16 x1, Sint16 y1, Sint16 x2, + Sint16 y2, Uint8 R, Uint8 G, Uint8 B) +{ + sge_Line(Surface, x1, y1, x2, y2, SDL_MapRGB(Surface->format, R, G, B)); +} + +void SDLPutPixel(Bitmap *dst_bitmap, int x, int y, Pixel pixel) +{ + sge_PutPixel(dst_bitmap->surface, x, y, pixel); +} + + +/* + ----------------------------------------------------------------------------- + quick (no, it's slow) and dirty hack to "invert" rectangle inside SDL surface + ----------------------------------------------------------------------------- +*/ + +void SDLInvertArea(Bitmap *bitmap, int src_x, int src_y, + int width, int height, Uint32 color) +{ + int x, y; + + for (y = src_y; y < src_y + height; y++) + { + for (x = src_x; x < src_x + width; x++) + { + Uint32 pixel = SDLGetPixel(bitmap, x, y); + + SDLPutPixel(bitmap, x, y, pixel == BLACK_PIXEL ? color : BLACK_PIXEL); + } } +} - Mix_Volume(-1, SDL_MIX_MAXVOLUME / 4); - Mix_VolumeMusic(SDL_MIX_MAXVOLUME / 4); +void SDLCopyInverseMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap, + int src_x, int src_y, int width, int height, + int dst_x, int dst_y) +{ + int x, y; - return TRUE; + for (y = 0; y < height; y++) + { + for (x = 0; x < width; x++) + { + Uint32 pixel = SDLGetPixel(src_bitmap, src_x + x, src_y + y); + + if (pixel != BLACK_PIXEL) + SDLPutPixel(dst_bitmap, dst_x + x, dst_y + y, BLACK_PIXEL); + } + } +} + + +/* ========================================================================= */ +/* The following functions were taken from the SDL_gfx library version 2.0.3 */ +/* (Rotozoomer) by Andreas Schiffler */ +/* http://www.ferzkopp.net/Software/SDL_gfx-2.0/index.html */ +/* ========================================================================= */ + +/* + ----------------------------------------------------------------------------- + 32 bit zoomer + + zoomes 32bit RGBA/ABGR 'src' surface to 'dst' surface. + ----------------------------------------------------------------------------- +*/ + +typedef struct +{ + Uint8 r; + Uint8 g; + Uint8 b; + Uint8 a; +} tColorRGBA; + +int zoomSurfaceRGBA_scaleDownBy2(SDL_Surface *src, SDL_Surface *dst) +{ + int x, y; + tColorRGBA *sp, *csp, *dp; + int dgap; + + /* pointer setup */ + sp = csp = (tColorRGBA *) src->pixels; + dp = (tColorRGBA *) dst->pixels; + dgap = dst->pitch - dst->w * 4; + + for (y = 0; y < dst->h; y++) + { + sp = csp; + + for (x = 0; x < dst->w; x++) + { + tColorRGBA *sp0 = sp; + tColorRGBA *sp1 = (tColorRGBA *) ((Uint8 *) sp + src->pitch); + tColorRGBA *sp00 = &sp0[0]; + tColorRGBA *sp01 = &sp0[1]; + tColorRGBA *sp10 = &sp1[0]; + tColorRGBA *sp11 = &sp1[1]; + tColorRGBA new; + + /* create new color pixel from all four source color pixels */ + new.r = (sp00->r + sp01->r + sp10->r + sp11->r) / 4; + new.g = (sp00->g + sp01->g + sp10->g + sp11->g) / 4; + new.b = (sp00->b + sp01->b + sp10->b + sp11->b) / 4; + new.a = (sp00->a + sp01->a + sp10->a + sp11->a) / 4; + + /* draw */ + *dp = new; + + /* advance source pointers */ + sp += 2; + + /* advance destination pointer */ + dp++; + } + + /* advance source pointer */ + csp = (tColorRGBA *) ((Uint8 *) csp + 2 * src->pitch); + + /* advance destination pointers */ + dp = (tColorRGBA *) ((Uint8 *) dp + dgap); + } + + return 0; +} + +int zoomSurfaceRGBA(SDL_Surface *src, SDL_Surface *dst) +{ + int x, y, *sax, *say, *csax, *csay; + float sx, sy; + tColorRGBA *sp, *csp, *csp0, *dp; + int dgap; + + /* use specialized zoom function when scaling down to exactly half size */ + if (src->w == 2 * dst->w && + src->h == 2 * dst->h) + return zoomSurfaceRGBA_scaleDownBy2(src, dst); + + /* variable setup */ + sx = (float) src->w / (float) dst->w; + sy = (float) src->h / (float) dst->h; + + /* allocate memory for row increments */ + csax = sax = (int *)checked_malloc((dst->w + 1) * sizeof(Uint32)); + csay = say = (int *)checked_malloc((dst->h + 1) * sizeof(Uint32)); + + /* precalculate row increments */ + for (x = 0; x <= dst->w; x++) + *csax++ = (int)(sx * x); + + for (y = 0; y <= dst->h; y++) + *csay++ = (int)(sy * y); + + /* pointer setup */ + sp = csp = csp0 = (tColorRGBA *) src->pixels; + dp = (tColorRGBA *) dst->pixels; + dgap = dst->pitch - dst->w * 4; + + csay = say; + for (y = 0; y < dst->h; y++) + { + sp = csp; + csax = sax; + + for (x = 0; x < dst->w; x++) + { + /* draw */ + *dp = *sp; + + /* advance source pointers */ + csax++; + sp = csp + *csax; + + /* advance destination pointer */ + dp++; + } + + /* advance source pointer */ + csay++; + csp = (tColorRGBA *) ((Uint8 *) csp0 + *csay * src->pitch); + + /* advance destination pointers */ + dp = (tColorRGBA *) ((Uint8 *) dp + dgap); + } + + free(sax); + free(say); + + return 0; +} + +/* + ----------------------------------------------------------------------------- + 8 bit zoomer + + zoomes 8 bit palette/Y 'src' surface to 'dst' surface + ----------------------------------------------------------------------------- +*/ + +int zoomSurfaceY(SDL_Surface * src, SDL_Surface * dst) +{ + Uint32 x, y, sx, sy, *sax, *say, *csax, *csay, csx, csy; + Uint8 *sp, *dp, *csp; + int dgap; + + /* variable setup */ + sx = (Uint32) (65536.0 * (float) src->w / (float) dst->w); + sy = (Uint32) (65536.0 * (float) src->h / (float) dst->h); + + /* allocate memory for row increments */ + sax = (Uint32 *)checked_malloc(dst->w * sizeof(Uint32)); + say = (Uint32 *)checked_malloc(dst->h * sizeof(Uint32)); + + /* precalculate row increments */ + csx = 0; + csax = sax; + for (x = 0; x < dst->w; x++) + { + csx += sx; + *csax = (csx >> 16); + csx &= 0xffff; + csax++; + } + + csy = 0; + csay = say; + for (y = 0; y < dst->h; y++) + { + csy += sy; + *csay = (csy >> 16); + csy &= 0xffff; + csay++; + } + + csx = 0; + csax = sax; + for (x = 0; x < dst->w; x++) + { + csx += (*csax); + csax++; + } + + csy = 0; + csay = say; + for (y = 0; y < dst->h; y++) + { + csy += (*csay); + csay++; + } + + /* pointer setup */ + sp = csp = (Uint8 *) src->pixels; + dp = (Uint8 *) dst->pixels; + dgap = dst->pitch - dst->w; + + /* draw */ + csay = say; + for (y = 0; y < dst->h; y++) + { + csax = sax; + sp = csp; + for (x = 0; x < dst->w; x++) + { + /* draw */ + *dp = *sp; + + /* advance source pointers */ + sp += (*csax); + csax++; + + /* advance destination pointer */ + dp++; + } + + /* advance source pointer (for row) */ + csp += ((*csay) * src->pitch); + csay++; + + /* advance destination pointers */ + dp += dgap; + } + + free(sax); + free(say); + + return 0; +} + +/* + ----------------------------------------------------------------------------- + zoomSurface() + + Zooms a 32bit or 8bit 'src' surface to newly created 'dst' surface. + 'zoomx' and 'zoomy' are scaling factors for width and height. + If the surface is not 8bit or 32bit RGBA/ABGR it will be converted + into a 32bit RGBA format on the fly. + ----------------------------------------------------------------------------- +*/ + +SDL_Surface *zoomSurface(SDL_Surface *src, int dst_width, int dst_height) +{ + SDL_Surface *zoom_src = NULL; + SDL_Surface *zoom_dst = NULL; + boolean is_converted = FALSE; + boolean is_32bit; + int i; + + if (src == NULL) + return NULL; + + /* determine if source surface is 32 bit or 8 bit */ + is_32bit = (src->format->BitsPerPixel == 32); + + if (is_32bit || src->format->BitsPerPixel == 8) + { + /* use source surface 'as is' */ + zoom_src = src; + } + else + { + /* new source surface is 32 bit with a defined RGB ordering */ + zoom_src = SDL_CreateRGBSurface(SURFACE_FLAGS, src->w, src->h, 32, + 0x000000ff, 0x0000ff00, 0x00ff0000, 0); + SDL_BlitSurface(src, NULL, zoom_src, NULL); + is_32bit = TRUE; + is_converted = TRUE; + } + + /* allocate surface to completely contain the zoomed surface */ + if (is_32bit) + { + /* target surface is 32 bit with source RGBA/ABGR ordering */ + zoom_dst = SDL_CreateRGBSurface(SURFACE_FLAGS, dst_width, dst_height, 32, + zoom_src->format->Rmask, + zoom_src->format->Gmask, + zoom_src->format->Bmask, 0); + } + else + { + /* target surface is 8 bit */ + zoom_dst = SDL_CreateRGBSurface(SURFACE_FLAGS, dst_width, dst_height, 8, + 0, 0, 0, 0); + } + + /* lock source surface */ + SDL_LockSurface(zoom_src); + + /* check which kind of surface we have */ + if (is_32bit) + { + /* call the 32 bit transformation routine to do the zooming */ + zoomSurfaceRGBA(zoom_src, zoom_dst); + } + else + { + /* copy palette */ + for (i = 0; i < zoom_src->format->palette->ncolors; i++) + zoom_dst->format->palette->colors[i] = + zoom_src->format->palette->colors[i]; + zoom_dst->format->palette->ncolors = zoom_src->format->palette->ncolors; + + /* call the 8 bit transformation routine to do the zooming */ + zoomSurfaceY(zoom_src, zoom_dst); + } + + /* unlock source surface */ + SDL_UnlockSurface(zoom_src); + + /* free temporary surface */ + if (is_converted) + SDL_FreeSurface(zoom_src); + + /* return destination surface */ + return zoom_dst; +} + +Bitmap *SDLZoomBitmap(Bitmap *src_bitmap, int dst_width, int dst_height) +{ + Bitmap *dst_bitmap = CreateBitmapStruct(); + SDL_Surface **dst_surface = &dst_bitmap->surface; + + dst_width = MAX(1, dst_width); /* prevent zero bitmap width */ + dst_height = MAX(1, dst_height); /* prevent zero bitmap height */ + + dst_bitmap->width = dst_width; + dst_bitmap->height = dst_height; + + /* create zoomed temporary surface from source surface */ + *dst_surface = zoomSurface(src_bitmap->surface, dst_width, dst_height); + + /* create native format destination surface from zoomed temporary surface */ + SDLSetNativeSurface(dst_surface); + + return dst_bitmap; +} + + +/* ========================================================================= */ +/* load image to bitmap */ +/* ========================================================================= */ + +Bitmap *SDLLoadImage(char *filename) +{ + Bitmap *new_bitmap = CreateBitmapStruct(); + SDL_Surface *sdl_image_tmp; + + print_timestamp_init("SDLLoadImage"); + + print_timestamp_time(getBaseNamePtr(filename)); + + /* load image to temporary surface */ + if ((sdl_image_tmp = IMG_Load(filename)) == NULL) + { + SetError("IMG_Load(): %s", SDL_GetError()); + + return NULL; + } + + print_timestamp_time("IMG_Load"); + + UPDATE_BUSY_STATE(); + + /* create native non-transparent surface for current image */ + if ((new_bitmap->surface = SDLGetNativeSurface(sdl_image_tmp)) == NULL) + { + SetError("SDL_DisplayFormat(): %s", SDL_GetError()); + + return NULL; + } + + print_timestamp_time("SDL_DisplayFormat (opaque)"); + + UPDATE_BUSY_STATE(); + + /* create native transparent surface for current image */ + if (sdl_image_tmp->format->Amask == 0) + SDL_SetColorKey(sdl_image_tmp, SET_TRANSPARENT_PIXEL, + SDL_MapRGB(sdl_image_tmp->format, 0x00, 0x00, 0x00)); + + if ((new_bitmap->surface_masked = SDLGetNativeSurface(sdl_image_tmp)) == NULL) + { + SetError("SDL_DisplayFormat(): %s", SDL_GetError()); + + return NULL; + } + + print_timestamp_time("SDL_DisplayFormat (masked)"); + + UPDATE_BUSY_STATE(); + + /* free temporary surface */ + SDL_FreeSurface(sdl_image_tmp); + + new_bitmap->width = new_bitmap->surface->w; + new_bitmap->height = new_bitmap->surface->h; + + print_timestamp_done("SDLLoadImage"); + + return new_bitmap; +} + + +/* ------------------------------------------------------------------------- */ +/* custom cursor fuctions */ +/* ------------------------------------------------------------------------- */ + +static SDL_Cursor *create_cursor(struct MouseCursorInfo *cursor_info) +{ + return SDL_CreateCursor(cursor_info->data, cursor_info->mask, + cursor_info->width, cursor_info->height, + cursor_info->hot_x, cursor_info->hot_y); +} + +void SDLSetMouseCursor(struct MouseCursorInfo *cursor_info) +{ + static struct MouseCursorInfo *last_cursor_info = NULL; + static struct MouseCursorInfo *last_cursor_info2 = NULL; + static SDL_Cursor *cursor_default = NULL; + static SDL_Cursor *cursor_current = NULL; + + /* if invoked for the first time, store the SDL default cursor */ + if (cursor_default == NULL) + cursor_default = SDL_GetCursor(); + + /* only create new cursor if cursor info (custom only) has changed */ + if (cursor_info != NULL && cursor_info != last_cursor_info) + { + cursor_current = create_cursor(cursor_info); + last_cursor_info = cursor_info; + } + + /* only set new cursor if cursor info (custom or NULL) has changed */ + if (cursor_info != last_cursor_info2) + SDL_SetCursor(cursor_info ? cursor_current : cursor_default); + + last_cursor_info2 = cursor_info; +} + + +/* ========================================================================= */ +/* audio functions */ +/* ========================================================================= */ + +void SDLOpenAudio(void) +{ +#if !defined(TARGET_SDL2) + if (!strEqual(setup.system.sdl_audiodriver, ARG_DEFAULT)) + SDL_putenv(getStringCat2("SDL_AUDIODRIVER=", setup.system.sdl_audiodriver)); +#endif + + if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) + { + Error(ERR_WARN, "SDL_InitSubSystem() failed: %s", SDL_GetError()); + return; + } + + if (Mix_OpenAudio(DEFAULT_AUDIO_SAMPLE_RATE, MIX_DEFAULT_FORMAT, + AUDIO_NUM_CHANNELS_STEREO, + setup.system.audio_fragment_size) < 0) + { + Error(ERR_WARN, "Mix_OpenAudio() failed: %s", SDL_GetError()); + return; + } + + audio.sound_available = TRUE; + audio.music_available = TRUE; + audio.loops_available = TRUE; + audio.sound_enabled = TRUE; + + /* set number of available mixer channels */ + audio.num_channels = Mix_AllocateChannels(NUM_MIXER_CHANNELS); + audio.music_channel = MUSIC_CHANNEL; + audio.first_sound_channel = FIRST_SOUND_CHANNEL; + + Mixer_InitChannels(); } -inline void SDLCloseAudio(void) +void SDLCloseAudio(void) { Mix_HaltMusic(); Mix_HaltChannel(-1); Mix_CloseAudio(); + SDL_QuitSubSystem(SDL_INIT_AUDIO); +} + + +/* ========================================================================= */ +/* event functions */ +/* ========================================================================= */ + +void SDLNextEvent(Event *event) +{ + SDL_WaitEvent(event); +} + +void SDLHandleWindowManagerEvent(Event *event) +{ +#ifdef DEBUG +#if defined(PLATFORM_WIN32) + // experimental drag and drop code + + SDL_SysWMEvent *syswmevent = (SDL_SysWMEvent *)event; + SDL_SysWMmsg *syswmmsg = (SDL_SysWMmsg *)(syswmevent->msg); + +#if defined(TARGET_SDL2) + if (syswmmsg->msg.win.msg == WM_DROPFILES) +#else + if (syswmmsg->msg == WM_DROPFILES) +#endif + { +#if defined(TARGET_SDL2) + HDROP hdrop = (HDROP)syswmmsg->msg.win.wParam; +#else + HDROP hdrop = (HDROP)syswmmsg->wParam; +#endif + int i, num_files; + + printf("::: SDL_SYSWMEVENT:\n"); + + num_files = DragQueryFile(hdrop, 0xffffffff, NULL, 0); + + for (i = 0; i < num_files; i++) + { + int buffer_len = DragQueryFile(hdrop, i, NULL, 0); + char buffer[buffer_len + 1]; + + DragQueryFile(hdrop, i, buffer, buffer_len + 1); + + printf("::: - '%s'\n", buffer); + } + +#if defined(TARGET_SDL2) + DragFinish((HDROP)syswmmsg->msg.win.wParam); +#else + DragFinish((HDROP)syswmmsg->wParam); +#endif + } +#endif +#endif +} + + +/* ========================================================================= */ +/* joystick functions */ +/* ========================================================================= */ + +static SDL_Joystick *sdl_joystick[MAX_PLAYERS] = { NULL, NULL, NULL, NULL }; +static int sdl_js_axis[MAX_PLAYERS][2] = { {0, 0}, {0, 0}, {0, 0}, {0, 0} }; +static int sdl_js_button[MAX_PLAYERS][2] = { {0, 0}, {0, 0}, {0, 0}, {0, 0} }; + +static boolean SDLOpenJoystick(int nr) +{ + if (nr < 0 || nr > MAX_PLAYERS) + return FALSE; + + return ((sdl_joystick[nr] = SDL_JoystickOpen(nr)) == NULL ? FALSE : TRUE); +} + +static void SDLCloseJoystick(int nr) +{ + if (nr < 0 || nr > MAX_PLAYERS) + return; + + SDL_JoystickClose(sdl_joystick[nr]); + + sdl_joystick[nr] = NULL; +} + +static boolean SDLCheckJoystickOpened(int nr) +{ + if (nr < 0 || nr > MAX_PLAYERS) + return FALSE; + +#if defined(TARGET_SDL2) + return (sdl_joystick[nr] != NULL ? TRUE : FALSE); +#else + return (SDL_JoystickOpened(nr) ? TRUE : FALSE); +#endif +} + +void HandleJoystickEvent(Event *event) +{ + switch(event->type) + { + case SDL_JOYAXISMOTION: + if (event->jaxis.axis < 2) + sdl_js_axis[event->jaxis.which][event->jaxis.axis]= event->jaxis.value; + break; + + case SDL_JOYBUTTONDOWN: + if (event->jbutton.button < 2) + sdl_js_button[event->jbutton.which][event->jbutton.button] = TRUE; + break; + + case SDL_JOYBUTTONUP: + if (event->jbutton.button < 2) + sdl_js_button[event->jbutton.which][event->jbutton.button] = FALSE; + break; + + default: + break; + } } -#endif /* TARGET_SDL */ +void SDLInitJoysticks() +{ + static boolean sdl_joystick_subsystem_initialized = FALSE; + boolean print_warning = !sdl_joystick_subsystem_initialized; + int i; + + if (!sdl_joystick_subsystem_initialized) + { + sdl_joystick_subsystem_initialized = TRUE; + + if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0) + { + Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError()); + return; + } + } + + for (i = 0; i < MAX_PLAYERS; i++) + { + /* get configured joystick for this player */ + char *device_name = setup.input[i].joy.device_name; + int joystick_nr = getJoystickNrFromDeviceName(device_name); + + if (joystick_nr >= SDL_NumJoysticks()) + { + if (setup.input[i].use_joystick && print_warning) + Error(ERR_WARN, "cannot find joystick %d", joystick_nr); + + joystick_nr = -1; + } + + /* misuse joystick file descriptor variable to store joystick number */ + joystick.fd[i] = joystick_nr; + + if (joystick_nr == -1) + continue; + + /* this allows subsequent calls to 'InitJoysticks' for re-initialization */ + if (SDLCheckJoystickOpened(joystick_nr)) + SDLCloseJoystick(joystick_nr); + + if (!setup.input[i].use_joystick) + continue; + + if (!SDLOpenJoystick(joystick_nr)) + { + if (print_warning) + Error(ERR_WARN, "cannot open joystick %d", joystick_nr); + + continue; + } + + joystick.status = JOYSTICK_ACTIVATED; + } +} + +boolean SDLReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2) +{ + if (nr < 0 || nr >= MAX_PLAYERS) + return FALSE; + + if (x != NULL) + *x = sdl_js_axis[nr][0]; + if (y != NULL) + *y = sdl_js_axis[nr][1]; + + if (b1 != NULL) + *b1 = sdl_js_button[nr][0]; + if (b2 != NULL) + *b2 = sdl_js_button[nr][1]; + + return TRUE; +}