code/win32_handmade.h


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#if !defined(WIN32_HANDMADE_H)
/* ========================================================================
   $File: $
   $Date: $
   $Revision: $
   $Creator: Casey Muratori $
   $Notice: (C) Copyright 2014 by Molly Rocket, Inc. All Rights Reserved. $
   ======================================================================== */

struct win32_offscreen_buffer
{
 // NOTE(casey): Pixels are alwasy 32-bits wide, Memory Order BB GG RR XX
 BITMAPINFO Info;
 void *Memory;
 int Width;
 int Height;
 int Pitch;
 int BytesPerPixel;
};

struct win32_window_dimension
{
 int Width;
 int Height;
};

struct win32_sound_output
{
 int SamplesPerSecond;
 u32 RunningSampleIndex;
 int BytesPerSample;
 DWORD SecondaryBufferSize;
 DWORD SafetyBytes;
 r32 tSine;
 // TODO(casey): Should running sample index be in bytes as well
 // TODO(casey): Math gets simpler if we add a "bytes per second" field?
};

struct win32_debug_time_marker
{
 DWORD OutputPlayCursor;
 DWORD OutputWriteCursor;
 DWORD OutputLocation;
 DWORD OutputByteCount;
 DWORD ExpectedFlipPlayCursor;
 
 DWORD FlipPlayCursor;
 DWORD FlipWriteCursor;
};

struct win32_game_code
{
 HMODULE GameCodeDLL;
 FILETIME DLLLastWriteTime;
 
 // IMPORTANT(casey): Either of the callbacks can be 0!  You must
 // check before calling.
 game_update_and_render *UpdateAndRender;
 game_get_sound_samples *GetSoundSamples;
 
 b32 IsValid;
};

#define WIN32_STATE_FILE_NAME_COUNT MAX_PATH
struct win32_replay_buffer
{
 HANDLE FileHandle;
 HANDLE MemoryMap;
 char FileName[WIN32_STATE_FILE_NAME_COUNT];
 void *MemoryBlock;
};
struct win32_state
{
 u64 TotalSize;
 void *GameMemoryBlock;
 win32_replay_buffer ReplayBuffers[4];
 
 HANDLE RecordingHandle;
 int InputRecordingIndex;
 
 HANDLE PlaybackHandle;
 int InputPlayingIndex;
 
 char EXEFileName[WIN32_STATE_FILE_NAME_COUNT];
 char *OnePastLastEXEFileNameSlash;
};

#define WIN32_HANDMADE_H
#endif