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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*
*/
/*
* This code is based on original Tony Tough source code
*
* Copyright (c) 1997-2003 Nayma Software
*/
#ifndef __MPALDLL_H
#define __MPALDLL_H
#include "common/file.h"
#include "tony/mpal/memory.h"
#include "tony/mpal/loadmpc.h"
#include "tony/mpal/expr.h"
namespace Tony {
namespace MPAL {
/****************************************************************************\
* Defines
\****************************************************************************/
#define HEX_VERSION 0x0170
#define MAX_ACTIONS_PER_ITEM 40
#define MAX_COMMANDS_PER_ITEM 128
#define MAX_COMMANDS_PER_ACTION 128
#define MAX_DESCRIBE_SIZE 64
#define MAX_MOMENTS_PER_SCRIPT 256
#define MAX_COMMANDS_PER_SCRIPT 256
#define MAX_COMMANDS_PER_MOMENT 32
#define MAX_GROUPS_PER_DIALOG 128
#define MAX_COMMANDS_PER_DIALOG 480
#define MAX_COMMANDS_PER_GROUP 64
#define MAX_CHOICES_PER_DIALOG 64
#define MAX_SELECTS_PER_CHOICE 64
#define MAX_PLAYGROUPS_PER_SELECT 9
#define MAX_PERIODS_PER_DIALOG 400
#define NEED_LOCK_MSGS
/****************************************************************************\
* Structures
\****************************************************************************/
#include "common/pack-start.h"
/**
* MPAL global variables
*/
struct MPALVAR {
uint32 dwVal; // Variable value
char lpszVarName[33]; // Variable name
} PACKED_STRUCT;
typedef MPALVAR *LPMPALVAR;
typedef LPMPALVAR *LPLPMPALVAR;
/**
* MPAL Messages
*/
struct MPALMSG {
HGLOBAL _hText; // Handle to the message text
uint16 _wNum; // Message number
} PACKED_STRUCT;
typedef MPALMSG *LPMPALMSG;
typedef LPMPALMSG *LPLPMPALMSG;
/**
* MPAL Locations
*/
struct MPALLOCATION {
uint32 nObj; // Location number
uint32 dwXlen, dwYlen; // Dimensions
uint32 dwPicRes; // Resource that contains the image
} PACKED_STRUCT;
typedef MPALLOCATION *LPMPALLOCATION;
typedef LPMPALLOCATION *LPLPMPALLOCATION;
/**
* All the data for a command, ie. tags used by OnAction in the item, the time
* in the script, and in the group dialog.
*/
struct command {
/*
* Types of commands that are recognized
*
* #1 -> Custom function call (ITEM, SCRIPT, DIALOG)
* #2 -> Variable assignment (ITEM, SCRIPT, DIALOG)
* #3 -> Making a choice (DIALOG)
*
*/
byte type; // Type of control
union {
int32 _nCf; // Custom function call [#1]
char *lpszVarName; // Variable name [#2]
int32 nChoice; // Number of choice you make [#3]
};
union {
int32 _arg1; // Argument for custom function [#1]
HGLOBAL expr; // Expression to assign to a variable [#2]
};
int32 _arg2, _arg3, _arg4; // Arguments for custom function [#1]
} PACKED_STRUCT;
/**
* MPAL dialog
*/
struct MPALDIALOG {
uint32 nObj; // Dialog number
struct command _command[MAX_COMMANDS_PER_DIALOG];
struct {
uint16 num;
byte nCmds;
uint16 CmdNum[MAX_COMMANDS_PER_GROUP];
} _group[MAX_GROUPS_PER_DIALOG];
struct {
// The last choice has nChoice == 0
uint16 nChoice;
// The select number (we're pretty stingy with RAM). The last select has dwData == 0
struct {
HGLOBAL when;
uint32 dwData;
uint16 wPlayGroup[MAX_PLAYGROUPS_PER_SELECT];
// Bit 0=endchoice Bit 1=enddialog
byte attr;
// Modified at run-time: 0 if the select is currently disabled,
// and 1 if currently active
byte curActive;
} _select[MAX_SELECTS_PER_CHOICE];
} _choice[MAX_CHOICES_PER_DIALOG];
uint16 _periodNums[MAX_PERIODS_PER_DIALOG];
HGLOBAL _periods[MAX_PERIODS_PER_DIALOG];
} PACKED_STRUCT;
typedef MPALDIALOG *LPMPALDIALOG;
typedef LPMPALDIALOG *LPLPMPALDIALOG;
/**
* MPAL Item
*/
struct ItemAction {
byte num; // Action number
uint16 wTime; // If idle, the time which must pass
byte perc; // Percentage of the idle run
HGLOBAL when; // Expression to compute. If != 0, then
// action can be done
uint16 wParm; // Parameter for action
byte nCmds; // Number of commands to be executed
uint32 CmdNum[MAX_COMMANDS_PER_ACTION]; // Commands to execute
} PACKED_STRUCT;
struct MPALITEM {
uint32 nObj; // Item number
byte lpszDescribe[MAX_DESCRIBE_SIZE]; // Name
byte nActions; // Number of managed actions
uint32 dwRes; // Resource that contains frames and patterns
struct command _command[MAX_COMMANDS_PER_ITEM];
// Pointer to array of structures containing various managed activities. In practice, of
// every action we know what commands to run, including those defined in structures above
struct ItemAction *Action;
} PACKED_STRUCT;
typedef MPALITEM *LPMPALITEM;
typedef LPMPALITEM *LPLPMPALITEM;
/**
* MPAL Script
*/
struct MPALSCRIPT {
uint32 nObj;
uint32 nMoments;
struct command _command[MAX_COMMANDS_PER_SCRIPT];
struct {
int32 dwTime;
byte nCmds;
uint32 CmdNum[MAX_COMMANDS_PER_MOMENT];
} Moment[MAX_MOMENTS_PER_SCRIPT];
} PACKED_STRUCT;
typedef MPALSCRIPT *LPMPALSCRIPT;
typedef LPMPALSCRIPT *LPLPMPALSCRIPT;
#include "common/pack-end.h"
/****************************************************************************\
* Function prototypes
\****************************************************************************/
/**
* Returns the current value of a global variable
*
* @param lpszVarName Name of the variable
* @returns Current value
* @remarks Before using this method, you must call LockVar() to
* lock the global variablves for use. Then afterwards, you will
* need to remember to call UnlockVar()
*/
extern int32 varGetValue(const char *lpszVarName);
/**
* Sets the value of a MPAL global variable
* @param lpszVarName Name of the variable
* @param val Value to set
*/
extern void varSetValue(const char *lpszVarName, int32 val);
} // end of namespace MPAL
} // end of namespace Tony
#endif
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