forked from 0ad/0ad
janwas
c0ed950657
this snowballed into a massive search+destroy of the hodgepodge of mostly equivalent types we had in use (int, uint, unsigned, unsigned int, i32, u32, ulong, uintN). it is more efficient to use 64-bit types in 64-bit mode, so the preferred default is size_t (for anything remotely resembling a size or index). tile coordinates are ssize_t to allow more efficient conversion to/from floating point. flags are int because we almost never need more than 15 distinct bits, bit test/set is not slower and int is fastest to type. finally, some data that is pretty much directly passed to OpenGL is now typed accordingly. after several hours, the code now requires fewer casts and less guesswork. other changes: - unit and player IDs now have an "invalid id" constant in the respective class to avoid casting and -1 - fix some endian/64-bit bugs in the map (un)packing. added a convenience function to write/read a size_t. - ia32: change CPUID interface to allow passing in ecx (required for cache topology detection, which I need at work). remove some unneeded functions from asm, replace with intrinsics where possible. This was SVN commit r5942.
163 lines
2.8 KiB
C++
163 lines
2.8 KiB
C++
/**
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* =========================================================================
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* File : input.cpp
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* Project : 0 A.D.
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* Description : SDL input redirector; dispatches to multiple handlers and
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* : allows record/playback of evs.
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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#include "precompiled.h"
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#include "input.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include "lib/external_libraries/sdl.h"
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const size_t MAX_HANDLERS = 8;
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static InHandler handler_stack[MAX_HANDLERS];
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static size_t handler_stack_top = 0;
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void in_add_handler(InHandler handler)
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{
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debug_assert(handler);
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if(handler_stack_top >= MAX_HANDLERS)
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WARN_ERR_RETURN(ERR::LIMIT);
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handler_stack[handler_stack_top++] = handler;
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}
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// send ev to each handler until one returns IN_HANDLED
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static void dispatch_ev(const SDL_Event_* ev)
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{
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for(int i = (int)handler_stack_top-1; i >= 0; i--)
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{
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debug_assert(handler_stack[i] && ev);
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InReaction ret = handler_stack[i](ev);
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// .. done, return
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if(ret == IN_HANDLED)
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return;
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// .. next handler
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else if(ret == IN_PASS)
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continue;
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// .. invalid return value
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else
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debug_assert(0); // invalid handler return value
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}
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}
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//-----------------------------------------------------------------------------
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static enum
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{
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INIT, // first call to in_record() or in_playback(): register cleanup routine
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IDLE,
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RECORD,
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PLAYBACK
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}
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state = INIT;
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static FILE* f;
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u32 game_ticks;
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static u32 time_adjust = 0;
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static u32 next_ev_time;
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void in_stop()
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{
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if(f)
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{
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fclose(f);
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f = 0;
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}
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state = IDLE;
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}
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LibError in_record(const char* fn)
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{
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if(state == INIT)
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atexit(in_stop);
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in_stop();
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f = fopen(fn, "wb");
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if(!f)
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WARN_RETURN(ERR::FAIL);
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fwrite(&game_ticks, sizeof(u32), 1, f);
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state = RECORD;
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return INFO::OK;
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}
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LibError in_playback(const char* fn)
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{
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if(state == INIT)
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atexit(in_stop);
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in_stop();
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f = fopen(fn, "rb");
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if(!f)
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WARN_RETURN(ERR::FAIL);
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u32 rec_start_time;
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fread(&rec_start_time, sizeof(u32), 1, f);
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time_adjust = game_ticks-rec_start_time;
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fread(&next_ev_time, sizeof(u32), 1, f);
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next_ev_time += time_adjust;
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state = PLAYBACK;
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return INFO::OK;
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}
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void in_dispatch_event(const SDL_Event_* ev)
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{
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if(state == RECORD)
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{
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fwrite(&game_ticks, sizeof(u32), 1, f);
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fwrite(ev, sizeof(SDL_Event_), 1, f);
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}
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dispatch_ev(ev);
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}
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void in_dispatch_recorded_events()
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{
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SDL_Event_ ev;
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while(state == PLAYBACK && next_ev_time <= game_ticks)
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{
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fread(&ev, sizeof(SDL_Event_), 1, f);
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// do this before dispatch_ev(),
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// in case a handler calls in_stop() (setting f to 0)
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if(!fread(&next_ev_time, sizeof(u32), 1, f))
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{
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in_stop();
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exit(0x73c07d);
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// TODO: 'disconnect'?
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}
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next_ev_time += time_adjust;
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in_dispatch_event(&ev);
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}
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}
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