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
|
/* 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.
*
* $URL$
* $Id$
*
*/
/*
* This code is based on original Hugo Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
// This module contains all the scheduling and timing stuff
#include "common/system.h"
#include "hugo/hugo.h"
#include "hugo/schedule.h"
#include "hugo/file.h"
#include "hugo/display.h"
#include "hugo/util.h"
namespace Hugo {
Scheduler::Scheduler(HugoEngine *vm) : _vm(vm) {
}
Scheduler::~Scheduler() {
}
// Initialise the timer event queue
void Scheduler::initEventQueue() {
debugC(1, kDebugSchedule, "initEventQueue");
// Chain next_p from first to last
for (int i = kMaxEvents; --i;)
_events[i - 1].nextEvent = &_events[i];
_events[kMaxEvents - 1].nextEvent = 0;
// Chain prev_p from last to first
for (int i = 1; i < kMaxEvents; i++)
_events[i].prevEvent = &_events[i - 1];
_events[0].prevEvent = 0;
_headEvent = _tailEvent = 0; // Event list is empty
_freeEvent = _events; // Free list is full
}
// Return a ptr to an event structure from the free list
event_t *Scheduler::getQueue() {
debugC(4, kDebugSchedule, "getQueue");
if (!_freeEvent) // Error: no more events available
Utils::Error(EVNT_ERR, "%s", "getQueue");
event_t *resEvent = _freeEvent;
_freeEvent = _freeEvent->nextEvent;
resEvent->nextEvent = 0;
return resEvent;
}
// Call Insert_action for each action in the list supplied
void Scheduler::insertActionList(uint16 actIndex) {
debugC(1, kDebugSchedule, "insertActionList(%d)", actIndex);
if (_vm->_actListArr[actIndex]) {
for (int i = 0; _vm->_actListArr[actIndex][i].a0.actType != ANULL; i++)
insertAction(&_vm->_actListArr[actIndex][i]);
}
}
// Decode a string
void Scheduler::decodeString(char *line) {
debugC(1, kDebugSchedule, "decodeString(%s)", line);
static const char *cypher = getCypher();
for (uint16 i = 0; i < strlen(line); i++)
line[i] -= cypher[i % strlen(cypher)];
debugC(1, kDebugSchedule, "result : %s", line);
}
// Return system time in ticks. A tick is 1/TICKS_PER_SEC mS
uint32 Scheduler::getWinTicks() {
debugC(3, kDebugSchedule, "getTicks");
return _vm->getGameStatus().tick;
}
// Return system time in ticks. A tick is 1/TICKS_PER_SEC mS
// If update FALSE, simply return last known time
// Note that this is real time unless a processing cycle takes longer than
// a real tick, in which case the system tick is simply incremented
uint32 Scheduler::getDosTicks(bool updateFl) {
debugC(5, kDebugSchedule, "getTicks");
static uint32 tick = 0; // Current system time in ticks
static uint32 t_old = 0; // The previous wall time in ticks
uint32 t_now; // Current wall time in ticks
if (!updateFl)
return(tick);
if (t_old == 0)
t_old = (uint32) floor((double) (g_system->getMillis() * TPS / 1000));
/* Calculate current wall time in ticks */
t_now = g_system->getMillis() * TPS / 1000 ;
if ((t_now - t_old) > 0) {
t_old = t_now;
tick++;
}
return(tick);
}
// Add indecated bonus to score if not added already
void Scheduler::processBonus(int bonusIndex) {
debugC(1, kDebugSchedule, "processBonus(%d)", bonusIndex);
if (!_vm->_points[bonusIndex].scoredFl) {
_vm->adjustScore(_vm->_points[bonusIndex].score);
_vm->_points[bonusIndex].scoredFl = true;
}
}
// Transition to a new screen as follows:
// 1. Clear out all non-global events from event list.
// 2. Set the new screen (in the hero object and any carried objects)
// 3. Read in the screen files for the new screen
// 4. Schedule action list for new screen
// 5. Initialise prompt line and status line
void Scheduler::newScreen(int screenIndex) {
debugC(1, kDebugSchedule, "newScreen(%d)", screenIndex);
// Make sure the background file exists!
if (!_vm->isPacked()) {
char line[32];
if (!_vm->_file->fileExists(strcat(strncat(strcpy(line, _vm->_picDir), _vm->_screenNames[screenIndex], NAME_LEN), BKGEXT)) &&
!_vm->_file->fileExists(strcat(strcpy(line, _vm->_screenNames[screenIndex]), ".ART"))) {
Utils::Box(BOX_ANY, "%s", _vm->_textSchedule[kSsNoBackground]);
return;
}
}
// 1. Clear out all local events
event_t *curEvent = _headEvent; // The earliest event
event_t *wrkEvent; // Event ptr
while (curEvent) { // While mature events found
wrkEvent = curEvent->nextEvent; // Save p (becomes undefined after Del)
if (curEvent->localActionFl)
delQueue(curEvent); // Return event to free list
curEvent = wrkEvent;
}
// 2. Set the new screen in the hero object and any being carried
_vm->setNewScreen(screenIndex);
// 3. Read in new screen files
_vm->readScreenFiles(screenIndex);
// 4. Schedule action list for this screen
_vm->screenActions(screenIndex);
// 5. Initialise prompt line and status line
_vm->_screen->initNewScreenDisplay();
}
// Transition to a new screen as follows:
// 1. Set the new screen (in the hero object and any carried objects)
// 2. Read in the screen files for the new screen
// 3. Initialise prompt line and status line
void Scheduler::restoreScreen(int screenIndex) {
debugC(1, kDebugSchedule, "restoreScreen(%d)", screenIndex);
// 1. Set the new screen in the hero object and any being carried
_vm->setNewScreen(screenIndex);
// 2. Read in new screen files
_vm->readScreenFiles(screenIndex);
// 3. Initialise prompt line and status line
_vm->_screen->initNewScreenDisplay();
}
// Wait (if necessary) for next synchronizing tick
// Slow machines won't make it by the end of tick, so will just plod on
// at their own speed, not waiting here, but free running.
// Note: DOS Versions only
void Scheduler::waitForRefresh(void) {
debugC(1, kDebugSchedule, "waitForRefresh()");
static uint32 timeout = 0;
uint32 t;
if (timeout == 0)
timeout = getDosTicks(true);
while ((t = getDosTicks(true)) < timeout)
;
timeout = ++t;
}
} // End of namespace Hugo
|
