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authorTimothy Collett2012-05-25 14:28:59 -0400
committerTimothy Collett2012-05-25 14:28:59 -0400
commit1dd4cc56670819e72d05c306d4f97d9b5a15cd3b (patch)
treed9f65163e789733a36f37a3def3dd2c428dab9cf /library/Hooks-darwin.cpp
parent44c3afc3066652f39d0b7be56cdca1f88e155132 (diff)
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More work on getting dfhack building & compiling on Mac OS X
Diffstat (limited to 'library/Hooks-darwin.cpp')
-rw-r--r--library/Hooks-darwin.cpp169
1 files changed, 169 insertions, 0 deletions
diff --git a/library/Hooks-darwin.cpp b/library/Hooks-darwin.cpp
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+/*
+https://github.com/peterix/dfhack
+Copyright (c) 2009-2011 Petr Mrázek (peterix@gmail.com)
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any
+damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any
+purpose, including commercial applications, and to alter it and
+redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must
+not claim that you wrote the original software. If you use this
+software in a product, an acknowledgment in the product documentation
+would be appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and
+must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source
+distribution.
+*/
+
+
+#include <stdio.h>
+#include <dlfcn.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/shm.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <vector>
+#include <string>
+#include <map>
+
+/*typedef struct interpose_s
+{
+ void *new_func;
+ void *orig_func;
+} interpose_t;*/
+
+#include "DFHack.h"
+#include "Core.h"
+#include "Hooks.h"
+#include <iostream>
+
+#include "MacPool.h"
+
+/*static const interpose_t interposers[] __attribute__ ((section("__DATA, __interpose"))) =
+{
+ { (void *)DFH_SDL_Init, (void *)SDL_Init },
+ { (void *)DFH_SDL_PollEvent, (void *)SDL_PollEvent },
+ { (void *)DFH_SDL_Quit, (void *)SDL_Quit },
+ { (void *)DFH_SDL_NumJoysticks, (void *)SDL_NumJoysticks },
+
+};*/
+
+/*******************************************************************************
+* SDL part starts here *
+*******************************************************************************/
+// hook - called for each game tick (or more often)
+DFhackCExport int SDL_NumJoysticks(void)
+{
+ DFHack::Core & c = DFHack::Core::getInstance();
+ return c.Update();
+}
+
+// hook - called at program exit
+static void (*_SDL_Quit)(void) = 0;
+DFhackCExport void SDL_Quit(void)
+{
+ DFHack::Core & c = DFHack::Core::getInstance();
+ c.Shutdown();
+ /*if(_SDL_Quit)
+ {
+ _SDL_Quit();
+ }*/
+
+// destroy_pool();
+
+ _SDL_Quit();
+}
+
+// called by DF to check input events
+static int (*_SDL_PollEvent)(SDL_Event* event) = 0;
+DFhackCExport int SDL_PollEvent(SDL_Event* event)
+{
+ pollevent_again:
+ // if SDL returns 0 here, it means there are no more events. return 0
+ int orig_return = _SDL_PollEvent(event);
+ if(!orig_return)
+ return 0;
+ // otherwise we have an event to filter
+ else if( event != 0 )
+ {
+ DFHack::Core & c = DFHack::Core::getInstance();
+ // if we consume the event, ask SDL for more.
+ if(!c.DFH_SDL_Event(event))
+ goto pollevent_again;
+ }
+ return orig_return;
+}
+
+struct WINDOW;
+DFhackCExport int wgetch(WINDOW *win)
+{
+ static int (*_wgetch)(WINDOW * win) = (int (*)( WINDOW * )) dlsym(RTLD_NEXT, "wgetch");
+ if(!_wgetch)
+ {
+ exit(EXIT_FAILURE);
+ }
+ DFHack::Core & c = DFHack::Core::getInstance();
+ wgetch_again:
+ int in = _wgetch(win);
+ int out;
+ if(c.ncurses_wgetch(in, out))
+ {
+ // not consumed, give to DF
+ return out;
+ }
+ else
+ {
+ // consumed, repeat
+ goto wgetch_again;
+ }
+}
+
+// hook - called at program start, initialize some stuffs we'll use later
+static int (*_SDL_Init)(uint32_t flags) = 0;
+DFhackCExport int SDL_Init(uint32_t flags)
+{
+ // reroute stderr
+ fprintf(stderr,"dfhack: attempting to hook in\n");
+ //freopen("stderr.log", "w", stderr);
+ // we don't reroute stdout until we figure out if this should be done at all
+ // See: Console-linux.cpp
+
+// create_pool();
+
+ // find real functions
+ fprintf(stderr,"dfhack: saving real SDL functions\n");
+ _SDL_Init = (int (*)( uint32_t )) dlsym(RTLD_NEXT, "SDL_Init");
+ _SDL_Quit = (void (*)( void )) dlsym(RTLD_NEXT, "SDL_Quit");
+ _SDL_PollEvent = (int (*)(SDL_Event*))dlsym(RTLD_NEXT,"SDL_PollEvent");
+
+ fprintf(stderr,"dfhack: saved real SDL functions\n");
+ // check if we got them
+ if(_SDL_Init && _SDL_Quit && _SDL_PollEvent)
+ {
+ fprintf(stderr,"dfhack: hooking successful\n");
+ }
+ else
+ {
+ // bail, this would be a disaster otherwise
+ fprintf(stderr,"dfhack: something went horribly wrong\n");
+ exit(1);
+ }
+
+ DFHack::Core & c = DFHack::Core::getInstance();
+ c.Init();
+
+ int ret = _SDL_Init(flags);
+ return ret;
+} \ No newline at end of file