/* global.h - Don Yang (uguu.org)

   12/31/00
                                                                           */

#ifndef GLOBAL_H__
#define GLOBAL_H__


#include<windows.h>
#include<wingdi.h>
#include<ddraw.h>
#include<mmsystem.h>

#include<ctype.h>
#include<math.h>
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include"log.h"

// Game parameters
#define CELLS_PER_LEVEL          50       // Number of cells to advance level
#define SPECIAL_FREQ             100      // Special cell frequency
#define MINIMUM_TIME             1        // Minimum block drop delay
#define MAX_DELTA_SCORE          64000    // Maximum score increase
#define MAX_SCORE                999999   // Maximum total score
#define MAX_LEVEL                9        // Last level (do not change)
#define INIT_CRC                 31337    // Registry CRC (do not change)
#define START_DELAY              6        // Title screen delay time

// Animated background parameter
// animate when (FrameCount & BG_CHANGE_FREQ) == 0
#define BG_CHANGE_FREQ           7

// Screen/field dimensions (do not change)
#define APP_WIDTH                640
#define APP_HEIGHT               480
#define CELL_SIZE                32
#define GRID_MARGIN              16
#define GRID_WIDTH               ((APP_WIDTH - 32) / CELL_SIZE)
#define GRID_HEIGHT              ((APP_HEIGHT - 80) / CELL_SIZE)

// Game field bit masks (do not change)
#define CELL_FREE                0x40
#define CELL_CLUSTER             0x20
#define CELL_DEAD_CLUSTER        0x10
#define CELL_TYPE                0x0f
#define TILE_SPECIAL             6

// Virtual key codes (corresponds with HELP_STRING in resource.h)
#define KEY_EXIT                 'Q'      // Quit
#define KEY_CAPTURE              'D'      // Recapture desktop
#define KEY_FRAMERATE            'F'      // Recalibrate framerate
#define KEY_PAUSE                'P'      // Pause game
#define KEY_RESET                'R'      // Reset game
#define KEY_SOUND                'S'      // Toggle sound
#define KEY_TERMINAL             VK_F12   // Switch to/from Ruri-ruri mode
#define KEY_ROTATE               VK_UP    // Rotate block
#define KEY_DROP                 VK_DOWN  // Drop block
#define KEY_LEFT                 VK_LEFT  // Move block left
#define KEY_RIGHT                VK_RIGHT // Move block right

// Joystick parameters
#define JOYSTICK_PERIOD          20       // Milliseconds between polls
#define JOYSTICK_REPEAT_DELAY    3        // Repeat factor (see input.cpp)

// Registry parameters (do not change)
#define REG_KEY_PATH             "Software\\Omoikane\\otika"
#define EXEC_COUNT_KEY           "exec_count"
#define OPTION_KEY               "options"
#define MAX_NAME_LENGTH          26
#define MAX_NAME_LENGTH_D        8
#define MAX_HISTORY_LENGTH       10

// Option bits (do not change)
#define OPTION_SND               0x000f
#define OPTION_SND_ALL           1
#define OPTION_SND_BLIP          (OPTION_SND_ALL | 2)
#define OPTION_SND_CLEAR         (OPTION_SND_ALL | 4)
#define OPTION_SND_SPECIAL       (OPTION_SND_ALL | 8)

#define OPTION_SPR               0x0030
#define OPTION_SPR_NORMAL        0
#define OPTION_SPR_TRANSPARENT   0x0010
#define OPTION_SPR_TRANSLUCENT   0x0020
#define OPTION_SPR_MODE0         OPTION_SPR_NORMAL
#define OPTION_SPR_MODE1         OPTION_SPR_TRANSPARENT
#define OPTION_SPR_MODE2         OPTION_SPR_TRANSLUCENT
#define OPTION_SPR_MODE3         (OPTION_SPR_MODE1 | OPTION_SPR_MODE2)

#define OPTION_BG                0x03c0
#define OPTION_BG_FX             0x0180
#define OPTION_BG_BACKGROUND     0x0040
#define OPTION_BG_FRACTAL        0x0080
#define OPTION_BG_DUST           0x0100
#define OPTION_BG_SWARM          0X0180
#define OPTION_BG_WHITE_PARTICLE 0x0200

// Default options, when registry read fails
#define OPTION_DEFAULT           \
   (OPTION_SND | OPTION_SPR_MODE2 | OPTION_BG_BACKGROUND | OPTION_BG_FRACTAL)

// Symbolic constants
enum
{
   PIXEL_1555, PIXEL_565, PIXEL_888, PIXEL_8888
};
enum
{
   HISTORY_SCORE, HISTORY_CELLS, HISTORY_BLOCKS, HISTORY_CLUSTER,
   HISTORY_MAX_CHAIN, HISTORY_MAX_CLUSTER, HISTORY_TIME,

   HISTORY_CRC, HISTORY_COUNT
};
enum
{
   SYS_STATE_INIT = -100,
   SYS_STATE_INIT0,
   SYS_STATE_INIT1,
   SYS_STATE_INIT2,
   SYS_STATE_INIT3,
   SYS_STATE_INIT4,

   GAME_STATE_WAIT_START = 0,
   GAME_STATE_SHOW_HISTORY,
   GAME_STATE_GENERATE_BLOCK,
   GAME_STATE_INPUT_LOOP,
   GAME_STATE_CLEAR_SPECIAL,
   GAME_STATE_REMOVE_CLUSTER,
   GAME_STATE_MARK_CLUSTER,
   GAME_STATE_GAME_OVER0,
   GAME_STATE_GAME_OVER1,
   GAME_STATE_GAME_OVER2,
   GAME_STATE_GAME_OVER3,
   GAME_STATE_ENTER_NAME,
   GAME_STATE_SHOW_STATS,

   TERMINAL_STATE
};

// Highscore table entry, also current player status
typedef struct
{
   union
   {
      char name[MAX_NAME_LENGTH + 1];
      DWORD data[MAX_NAME_LENGTH_D];
   } n;
   DWORD data[HISTORY_COUNT];
} PlayerEntry;

// Global variables (see global.cpp for description)
extern int ActualFPS[4];
extern int ActualFPSindex;
extern BOOL AppActive;
extern HINSTANCE AppInstance;
extern BOOL AppPaused;
extern HWND AppWindow;
extern BYTE *BGImage;
extern int BlockT0;  // T0 is bottom, y = BlockY
extern int BlockT1;  // T1 is top, y = BlockY + 1
extern int BlockX;
extern int BlockY;
extern PlayerEntry CurrentPlayer;
extern DWORD DDPitch;
extern BOOL DDReady;
extern DWORD ExecCount;
extern int ExpectedFPS;
extern int FixColumn;
extern BOOL FixSpecial;
extern int FrameCount;
extern int GameLevel;
extern DWORD GameOptions;
extern int GameState;
extern int GameStateTime;
extern int Grid[32][32];
extern PlayerEntry History[MAX_HISTORY_LENGTH];
extern BOOL JoystickAvailable;
extern BOOL JoystickCaptured;
extern UINT JoystickID;
extern int MaxFrames;
extern int MouseB;
extern int MouseX;
extern int MouseY;
extern int PixelFormat;
extern BOOL RedrawAll;
extern int ResumeState;
extern int ScreenWidth;
extern int ScreenHeight;
extern BOOL ShiftState;
extern DWORD SpriteOffset[32][32];
extern int WindowX;
extern int WindowY;

// Run-time selected functions
extern void (*AnimateBackground)(void);
extern BOOL (*ClearScreen)(void);
extern void (*InitBackground)(void);
extern BOOL (*InitSprites)(void);
extern void (*PaintBackground)(DWORD screen);
extern void (*RenderBackground)(void);
extern void (*RepaintBackground)(DWORD screen, int c, int r);
extern void (*RepaintBackgroundA)(DWORD screen, int x, int y, int w, int h);

void NullFunc(void);


#endif