LoopScript.h

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/*
Copyright (C) 2003 The Pentagram team

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifndef LOOPSCRIPT_H_INCLUDED
#define LOOPSCRIPT_H_INCLUDED

// Script Tokens
#define LS_TOKEN_AND                    '&'
#define LS_TOKEN_OR                             '+'
#define LS_TOKEN_NOT                    '!'
#define LS_TOKEN_EQUAL                  '='
#define LS_TOKEN_GREATER                '>'
#define LS_TOKEN_LESS                   '<'
#define LS_TOKEN_GEQUAL                 ']'
#define LS_TOKEN_LEQUAL                 '['

#define LS_TOKEN_INT                    '%'

#define LS_TOKEN_TRUE                   1
#define LS_TOKEN_FALSE                  0
#define LS_TOKEN_NPCNUM                 '#'
#define LS_TOKEN_STATUS                 '?'
#define LS_TOKEN_Q                              '*'
#define LS_TOKEN_FAMILY                 ':'
#define LS_TOKEN_SHAPE                  '@'
#define LS_TOKEN_FRAME                  '`'

#define LS_TOKEN_END                    '$'     

//
// Generating Loopscripts aka Abusing the C Preprocessor
//

//
// Highlevel Function Like Scripts
//
// Usage:
//
// LOOPSCRIPT(script, LS_AND(LS_SHAPE_EQUAL(73), LS_Q_EQUAL(4)));
//

//
// Tokenized Scripts
//
// Usage:
//
// const uint8 script[] = { 
//      LS_TOKEN_SHAPE,
//      LS_TOKEN_INT,
//      LS_CONSTANT(73),
//      LS_TOKEN_EQUAL,
//      LS_TOKEN_Q,
//      LS_TOKEN_INT,
//      LS_CONSTANT(4),
//      LS_TOKEN_EQUAL,
//      LS_TOKEN_AND,
//      LS_TOKEN_END
// };
//

#define LOOPSCRIPT(name,tokens) const uint8 name[] = { tokens, LS_TOKEN_END }

#define LS_CONSTANT(val)                        ((val)&0xFF), ((val>>8)&0xFF)
#define LS_INT(val)                                     LS_TOKEN_INT, LS_CONSTANT(val)

#define LS_OP(left, op, right)          left, right, op

#define LS_NOT(left)                            left, LS_TOKEN_NOT
#define LS_AND(left,right)                      left, right, LS_TOKEN_AND
#define LS_OR(left,right)                       left, right, LS_TOKEN_OR

#define LS_EQUAL(left,right)            left, right, LS_TOKEN_EQUAL
#define LS_LEQUAL(left,right)           left, right, LS_TOKEN_LEQUAL
#define LS_GEQUAL(left,right)           left, right, LS_TOKEN_GEQUAL
#define LS_LESS(left,right)                     left, right, LS_TOKEN_LESS
#define LS_GREATER(left,right)          left, right, LS_TOKEN_GREATER

#define LS_FAMILY_EQUAL(val)            LS_EQUAL(LS_TOKEN_FAMILY,LS_INT(val))
#define LS_NPCNUM_EQUAL(val)            LS_EQUAL(LS_TOKEN_NPCNUM,LS_INT(val))
#define LS_STATUS_EQUAL(val)            LS_EQUAL(LS_TOKEN_STATUS,LS_INT(val))
#define LS_Q_EQUAL(val)                         LS_EQUAL(LS_TOKEN_Q,LS_INT(val))

#define LS_SHAPE_EQUAL(val)                     LS_EQUAL(LS_TOKEN_SHAPE,LS_INT(val))
#define LS_SHAPE_EQUAL1(a)                      LS_TOKEN_SHAPE+1, LS_CONSTANT(a)
#define LS_SHAPE_EQUAL2(a,b)            LS_TOKEN_SHAPE+2, LS_CONSTANT(a), LS_CONSTANT(b)
#define LS_SHAPE_EQUAL3(a,b,c)          LS_TOKEN_SHAPE+3, LS_CONSTANT(a), LS_CONSTANT(b), LS_CONSTANT(c)
#define LS_SHAPE_EQUAL4(a,b,c,d)        LS_TOKEN_SHAPE+4, LS_CONSTANT(a), LS_CONSTANT(b), LS_CONSTANT(c), LS_CONSTANT(d)

#define LS_FRAME_EQUAL(val)                     LS_EQUAL(LS_TOKEN_FRAME,LS_INT(val))
#define LS_FRAME_EQUAL1(a)                      LS_TOKEN_FRAME+1, LS_CONSTANT(a)
#define LS_FRAME_EQUAL2(a,b)            LS_TOKEN_FRAME+2, LS_CONSTANT(a), LS_CONSTANT(b)
#define LS_FRAME_EQUAL3(a,b,c)          LS_TOKEN_FRAME+3, LS_CONSTANT(a), LS_CONSTANT(b), LS_CONSTANT(c)
#define LS_FRAME_EQUAL4(a,b,c,d)        LS_TOKEN_FRAME+4, LS_CONSTANT(a), LS_CONSTANT(b), LS_CONSTANT(c), LS_CONSTANT(d)

#endif

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