1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef DRACI_SCRIPT_H
#define DRACI_SCRIPT_H
#include "common/str.h"
#include "common/stream.h"
#include "common/queue.h"
namespace Draci {
/** The maximum number of parameters for a GPL command */
const int kMaxParams = 3;
class DraciEngine;
class Script;
enum {
kNumCommands = 55
};
typedef void (Script::* GPLHandler)(Common::Queue<int> &);
typedef int (Script::* GPLOperatorHandler)(int, int);
typedef int (Script::* GPLFunctionHandler)(int);
/**
* Represents a single command in the GPL scripting language bytecode.
* Each command is represented in the bytecode by a command number and a
* subnumber.
*/
struct GPL2Command {
byte _number;
byte _subNumber;
Common::String _name;
uint16 _numParams;
int _paramTypes[kMaxParams];
GPLHandler _handler;
};
struct GPL2Operator {
Common::String _name;
GPLOperatorHandler _handler;
};
struct GPL2Function {
Common::String _name;
GPLFunctionHandler _handler;
};
/**
* A convenience data type that holds both the actual bytecode and the
* length of the bytecode. Passed to Script::run().
*/
struct GPL2Program {
GPL2Program() : _bytecode(NULL), _length(0) {}
byte *_bytecode;
uint16 _length;
};
class Script {
public:
Script(DraciEngine *vm) : _vm(vm), _jump(0) { setupCommandList(); };
int run(GPL2Program program, uint16 offset);
private:
int _jump;
/** List of all GPL commands. Initialised in the constructor. */
const GPL2Command *_commandList;
const GPL2Operator *_operatorList;
const GPL2Function *_functionList;
void c_If(Common::Queue<int> ¶ms);
void c_Goto(Common::Queue<int> ¶ms);
void c_Let(Common::Queue<int> ¶ms);
void load(Common::Queue<int> ¶ms);
void start(Common::Queue<int> ¶ms);
void mark(Common::Queue<int> ¶ms);
void release(Common::Queue<int> ¶ms);
void objStat(Common::Queue<int> ¶ms);
void objStatOn(Common::Queue<int> ¶ms);
void execInit(Common::Queue<int> ¶ms);
void execLook(Common::Queue<int> ¶ms);
void execUse(Common::Queue<int> ¶ms);
void walkOn(Common::Queue<int> ¶ms);
void play(Common::Queue<int> ¶ms);
void startPlay(Common::Queue<int> ¶ms);
int operAnd(int op1, int op2);
int operOr(int op1, int op2);
int operXor(int op1, int op2);
int operSub(int op1, int op2);
int operAdd(int op1, int op2);
int operDiv(int op1, int op2);
int operMul(int op1, int op2);
int operEqual(int op1, int op2);
int operNotEqual(int op1, int op2);
int operGreater(int op1, int op2);
int operLess(int op1, int op2);
int operGreaterOrEqual(int op1, int op2);
int operLessOrEqual(int op1, int op2);
int operMod(int op1, int op2);
int funcRandom(int n);
int funcNot(int n);
int funcIsIcoOn(int iconID);
int funcIcoStat(int iconID);
int funcIsObjOn(int objID);
int funcIsObjOff(int objID);
int funcIsObjAway(int objID);
int funcActPhase(int objID);
void setupCommandList();
const GPL2Command *findCommand(byte num, byte subnum);
int handleMathExpression(Common::MemoryReadStream &reader);
DraciEngine *_vm;
};
}
#endif // DRACI_SCRIPT_H
|
