Initial commit

engines/glk/alan3/location.cpp

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "glk/alan3/location.h"
+#include "glk/alan3/instance.h"
+#include "glk/alan3/options.h"
+#include "glk/alan3/word.h"
+#include "glk/alan3/inter.h"
+#include "glk/alan3/glkio.h"
+#include "glk/alan3/lists.h"
+#include "glk/alan3/checkentry.h"
+#include "glk/alan3/debug.h"
+#include "glk/alan3/memory.h"
+#include "glk/alan3/dictionary.h"
+#include "glk/alan3/output.h"
+#include "glk/alan3/msg.h"
+#include "glk/alan3/current.h"
+
+namespace Glk {
+namespace Alan3 {
+
+/*----------------------------------------------------------------------*/
+static void traceExit(CONTEXT, int location, int dir, const char *what) {
+	printf("\n<EXIT %s[%d] from ",
+	       (char *)pointerTo(dictionary[playerWords[currentWordIndex - 1].code].string), dir);
+	CALL1(traceSay, location)
+	printf("[%d], %s:>\n", location, what);
+}
+
+
+
+/*======================================================================*/
+void go(CONTEXT, int location, int dir) {
+	ExitEntry *theExit;
+	bool ok;
+	Aword oldloc;
+
+	theExit = (ExitEntry *) pointerTo(instances[location].exits);
+	if (instances[location].exits != 0) {
+		while (!isEndOfArray(theExit)) {
+			if (theExit->code == (uint)dir) {
+				ok = TRUE;
+				if (theExit->checks != 0) {
+					if (traceSectionOption)
+						CALL3(traceExit, location, dir, "Checking")
+
+					FUNC2(checksFailed, ok, theExit->checks, EXECUTE_CHECK_BODY_ON_FAIL)
+					ok = !ok;
+				}
+				if (ok) {
+					oldloc = location;
+					if (theExit->action != 0) {
+						if (traceSectionOption)
+							CALL3(traceExit, location, dir, "Executing")
+						CALL1(interpret, theExit->action)
+					}
+					/* Still at the same place? */
+					if (where(HERO, TRANSITIVE) == (int)oldloc) {
+						if (traceSectionOption)
+							CALL3(traceExit, location, dir, "Moving")
+						CALL2(locate, HERO, theExit->target)
+					}
+					return;
+				} else {
+					CALL1(error, NO_MSG)
+				}
+			}
+			theExit++;
+		}
+	}
+
+	CALL1(error, M_NO_WAY)
+}
+
+
+/*======================================================================*/
+bool exitto(int to, int from) {
+	ExitEntry *theExit;
+
+	if (instances[from].exits == 0)
+		return FALSE; /* No exits */
+
+	for (theExit = (ExitEntry *) pointerTo(instances[from].exits); !isEndOfArray(theExit); theExit++)
+		if (theExit->target == (uint)to)
+			return TRUE;
+
+	return FALSE;
+}
+
+
+/*======================================================================*/
+void look(CONTEXT) {
+	uint i;
+
+	/* Set describe flag for all objects and actors */
+	for (i = 1; i <= header->instanceMax; i++)
+		admin[i].alreadyDescribed = FALSE;
+
+	if (anyOutput)
+		para();
+
+	setSubHeaderStyle();
+	CALL1(sayInstance, current.location)
+	setNormalStyle();
+
+	newline();
+	capitalize = TRUE;
+	if (describe(context, current.location) && !context._break)
+		describeInstances(context);
+}
+
+} // End of namespace Alan3
+} // End of namespace Glk