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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
/* 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.
*
* $URL$
* $Id$
*
*/
#include "sci/sci.h"
#include "sci/resource.h"
#include "sci/engine/state.h"
#include "sci/engine/kernel_types.h"
#include "sci/engine/kernel.h"
namespace Sci {
// Loads arbitrary resources of type 'restype' with resource numbers 'resnrs'
// This implementation ignores all resource numbers except the first one.
reg_t kLoad(EngineState *s, int argc, reg_t *argv) {
int restype = argv[0].toUint16();
int resnr = argv[1].toUint16();
// Request to dynamically allocate hunk memory for later use
if (restype == kResourceTypeMemory)
return kalloc(s->_segMan, "kLoad()", resnr);
return make_reg(0, ((restype << 11) | resnr)); // Return the resource identifier as handle
}
reg_t kLock(EngineState *s, int argc, reg_t *argv) {
int state = argc > 2 ? argv[2].toUint16() : 1;
ResourceType type = (ResourceType)(argv[0].toUint16() & 0x7f);
ResourceId id = ResourceId(type, argv[1].toUint16());
Resource *which;
switch (state) {
case 1 :
s->resMan->findResource(id, 1);
break;
case 0 :
which = s->resMan->findResource(id, 0);
if (which)
s->resMan->unlockResource(which);
else {
if (id.type == kResourceTypeInvalid)
warning("[resMan] Attempt to unlock resource %i of invalid type %i", id.number, type);
else
warning("[resMan] Attempt to unlock non-existant resource %s", id.toString().c_str());
}
break;
}
return s->r_acc;
}
// Unloads an arbitrary resource of type 'restype' with resource numbber 'resnr'
reg_t kUnLoad(EngineState *s, int argc, reg_t *argv) {
int restype = argv[0].toUint16();
reg_t resnr = argv[1];
if (restype == kResourceTypeMemory)
kfree(s->_segMan, resnr);
return s->r_acc;
}
reg_t kResCheck(EngineState *s, int argc, reg_t *argv) {
Resource *res = NULL;
ResourceType restype = (ResourceType)(argv[0].toUint16() & 0x7f);
if ((restype == kResourceTypeAudio36) || (restype == kResourceTypeSync36)) {
if (argc >= 6) {
uint noun = argv[2].toUint16() & 0xff;
uint verb = argv[3].toUint16() & 0xff;
uint cond = argv[4].toUint16() & 0xff;
uint seq = argv[5].toUint16() & 0xff;
res = s->resMan->testResource(ResourceId(restype, argv[1].toUint16(), noun, verb, cond, seq));
}
} else {
res = s->resMan->testResource(ResourceId(restype, argv[1].toUint16()));
}
return make_reg(0, res != NULL);
}
reg_t kClone(EngineState *s, int argc, reg_t *argv) {
reg_t parent_addr = argv[0];
Object *parent_obj = s->_segMan->getObject(parent_addr);
reg_t clone_addr;
Clone *clone_obj; // same as Object*
if (!parent_obj) {
error("Attempt to clone non-object/class at %04x:%04x failed", PRINT_REG(parent_addr));
return NULL_REG;
}
debugC(2, kDebugLevelMemory, "Attempting to clone from %04x:%04x\n", PRINT_REG(parent_addr));
clone_obj = s->_segMan->allocateClone(&clone_addr);
if (!clone_obj) {
error("Cloning %04x:%04x failed-- internal error", PRINT_REG(parent_addr));
return NULL_REG;
}
*clone_obj = *parent_obj;
clone_obj->_flags = 0;
// Mark as clone
clone_obj->setInfoSelector(make_reg(0, SCRIPT_INFO_CLONE));
clone_obj->setSpeciesSelector(clone_obj->_pos);
if (parent_obj->isClass())
clone_obj->setSuperClassSelector(parent_obj->_pos);
s->_segMan->getScript(parent_obj->_pos.segment)->incrementLockers();
s->_segMan->getScript(clone_obj->_pos.segment)->incrementLockers();
return clone_addr;
}
extern void _k_view_list_mark_free(EngineState *s, reg_t off);
reg_t kDisposeClone(EngineState *s, int argc, reg_t *argv) {
reg_t victim_addr = argv[0];
Clone *victim_obj = s->_segMan->getObject(victim_addr);
if (!victim_obj) {
error("Attempt to dispose non-class/object at %04x:%04x",
PRINT_REG(victim_addr));
return s->r_acc;
}
if (victim_obj->getInfoSelector().offset != SCRIPT_INFO_CLONE) {
//warning("Attempt to dispose something other than a clone at %04x", offset);
// SCI silently ignores this behaviour; some games actually depend on it
return s->r_acc;
}
// QFG3 clears clones with underbits set
//if (GET_SEL32V(victim_addr, underBits))
// warning("Clone %04x:%04x was cleared with underBits set", PRINT_REG(victim_addr));
#if 0
if (s->dyn_views) { // Free any widget associated with the clone
GfxWidget *widget = gfxw_set_id(gfxw_remove_ID(s->dyn_views, offset), GFXW_NO_ID);
if (widget && s->bg_widgets)
s->bg_widgets->add(GFXWC(s->bg_widgets), widget);
}
#endif
victim_obj->_flags |= OBJECT_FLAG_FREED;
_k_view_list_mark_free(s, victim_addr); // Free on view list, if neccessary
return s->r_acc;
}
// Returns script dispatch address index in the supplied script
reg_t kScriptID(EngineState *s, int argc, reg_t *argv) {
int script = argv[0].toUint16();
int index = (argc > 1) ? argv[1].toUint16() : 0;
if (argv[0].segment)
return argv[0];
SegmentId scriptSeg = s->_segMan->getScriptSegment(script, SCRIPT_GET_LOAD);
Script *scr;
if (!scriptSeg)
return NULL_REG;
scr = s->_segMan->getScript(scriptSeg);
if (!scr->_numExports) {
// FIXME: Is this fatal? This occurs in SQ4CD
warning("Script 0x%x does not have a dispatch table", script);
return NULL_REG;
}
if (index > scr->_numExports) {
error("Dispatch index too big: %d > %d", index, scr->_numExports);
return NULL_REG;
}
return make_reg(scriptSeg, s->_segMan->validateExportFunc(index, scriptSeg));
}
reg_t kDisposeScript(EngineState *s, int argc, reg_t *argv) {
int script = argv[0].offset;
// Work around QfG1 graveyard bug
if (argv[0].segment)
return s->r_acc;
int id = s->_segMan->getScriptSegment(script);
Script *scr = s->_segMan->getScriptIfLoaded(id);
if (scr) {
if (s->_executionStack.back().addr.pc.segment != id)
scr->setLockers(1);
}
script_uninstantiate(s->_segMan, script);
s->_executionStackPosChanged = true;
if (argc != 2) {
return s->r_acc;
} else {
// This exists in the KQ5CD interpreter, but a test case hasn't been found yet
warning("kDisposeScript called with 2 parameters, still untested");
return argv[1];
}
}
reg_t kIsObject(EngineState *s, int argc, reg_t *argv) {
if (argv[0].offset == SIGNAL_OFFSET) // Treated specially
return NULL_REG;
else
return make_reg(0, s->_segMan->isHeapObject(argv[0]));
}
reg_t kRespondsTo(EngineState *s, int argc, reg_t *argv) {
reg_t obj = argv[0];
int selector = argv[1].toUint16();
return make_reg(0, s->_segMan->isHeapObject(obj) && lookup_selector(s->_segMan, obj, selector, NULL, NULL) != kSelectorNone);
}
} // End of namespace Sci
|
