Micropolis
update.cpp
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1/* update.cpp
2 *
3 * Micropolis, Unix Version. This game was released for the Unix platform
4 * in or about 1990 and has been modified for inclusion in the One Laptop
5 * Per Child program. Copyright (C) 1989 - 2007 Electronic Arts Inc. If
6 * you need assistance with this program, you may contact:
7 * http://wiki.laptop.org/go/Micropolis or email micropolis@laptop.org.
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or (at
12 * your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details. You should have received a
18 * copy of the GNU General Public License along with this program. If
19 * not, see <http://www.gnu.org/licenses/>.
20 *
21 * ADDITIONAL TERMS per GNU GPL Section 7
22 *
23 * No trademark or publicity rights are granted. This license does NOT
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25 * other Electronic Arts trademark. You may not distribute any
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39 * the original program.
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42 * License. TO THE FULLEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW, THIS
43 * PROGRAM IS PROVIDED TO YOU "AS IS," WITH ALL FAULTS, WITHOUT WARRANTY
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60 * NOT APPLY TO YOU.
61 */
62
79
80
81#include "micropolis.h"
82#include "text.h"
83
84
86
87
88void Micropolis::doUpdateHeads()
89{
90 showValves();
91 doTimeStuff();
92 reallyUpdateFunds();
93 updateOptions();
94}
95
96
97void Micropolis::updateMaps()
98{
100 doUpdateHeads();
101}
102
103
104void Micropolis::updateGraphs()
105{
106 changeCensus();
107}
108
109
110void Micropolis::updateEvaluation()
111{
112 changeEval();
113}
114
115
116void Micropolis::updateHeads()
117{
118 mustUpdateFunds = true;
119 valveFlag = true;
120 cityTimeLast = cityYearLast = cityMonthLast = totalFundsLast =
121 resLast = comLast = indLast = -999999;
122 doUpdateHeads();
123}
124
125
128{
129 mustUpdateFunds = true;
130}
131
132
133void Micropolis::reallyUpdateFunds()
134{
135 if (!mustUpdateFunds) {
136 return;
137 }
138
139 mustUpdateFunds = false;
140
141 if (totalFunds != totalFundsLast) {
142 totalFundsLast = totalFunds;
143
144 callback->updateFunds(this, callbackVal, totalFunds);
145 }
146
147}
148
149
150void Micropolis::doTimeStuff()
151{
152 updateDate();
153}
154
155
160{
161 int megalinium = 1000000;
162
163 cityTimeLast = cityTime >> 2;
164
165 cityYear = ((int)cityTime / 48) + (int)startingYear;
166 cityMonth = ((int)cityTime % 48) >> 2;
167
168 if (cityYear >= megalinium) {
169 setYear(startingYear);
172
173 }
174
175 if ((cityYearLast != cityYear) ||
176 (cityMonthLast != cityMonth)) {
177
178 cityYearLast = cityYear;
179 cityMonthLast = cityMonth;
180
181 callback->updateDate(this, callbackVal, cityYear, cityMonth);
182 }
183}
184
185
186void Micropolis::showValves()
187{
188 if (valveFlag) {
189 drawValve();
190 valveFlag = false;
191 }
192}
193
194
195void Micropolis::drawValve()
196{
197 float r, c, i;
198
199 r = resValve;
200
201 if (r < -1500) {
202 r = -1500;
203 }
204
205 if (r > 1500) {
206 r = 1500;
207 }
208
209 c = comValve;
210
211 if (c < -1500) {
212 c = -1500;
213 }
214
215 if (c > 1500) {
216 c = 1500;
217 }
218
219 i = indValve;
220
221 if (i < -1500) {
222 i = -1500;
223 }
224
225 if (i > 1500) {
226 i = 1500;
227 }
228
229 if ((r != resLast) ||
230 (c != comLast) ||
231 (i != indLast)) {
232
233 resLast = (int)r;
234 comLast = (int)c;
235 indLast = (int)i;
236
237 setDemand(r, c, i);
238 }
239}
240
241
242void Micropolis::setDemand(float r, float c, float i)
243{
244 callback->updateDemand(this, callbackVal, r, c, i);
245}
246
247
248void Micropolis::updateOptions()
249{
250 if (mustUpdateOptions) {
251 mustUpdateOptions = false;
252 callback->updateOptions(this, callbackVal);
253 }
254}
255
256
262{
264
265 // city: after load file, load scenario, or generate city
266 // map: when small overall map changes
267 // editor: when large close-up map changes
268 // graph: when graph changes
269 // evaluation: when evaluation changes
270 // budget: when budget changes
271 // date: when date changes
272 // funds: when funds change
273 // demand: when demand changes
274 // level: when level changes
275 // speed: when speed changes
276 // delay: when delay changes
277 // option: when options change
278}
279
280
void changeEval()
Definition evaluate.cpp:507
void changeCensus()
Definition graph.cpp:122
Callback * callback
Definition micropolis.h:955
void updateUserInterface()
Definition update.cpp:261
void updateFunds()
Definition update.cpp:127
bool mustUpdateOptions
Options displayed at user need updating.
short startingYear
void sendMessage(short Mnum, short x=NOWHERE, short y=NOWHERE, bool picture=false, bool important=false)
Definition message.cpp:390
void invalidateMaps()
Quad totalFunds
Funds of the player.
void updateDate()
Definition update.cpp:159
Header file for Micropolis game engine.
static const int NOWHERE
Definition micropolis.h:233
Defines string identification numbers for texts used in the Micropolis game engine.
@ MESSAGE_NOT_ENOUGH_POWER
40: Brownouts, build another Power Plant.
Definition text.h:152