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engines/scumm/he/moonbase/ai_pattern.h

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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/>.
+ *
+ */
+
+#ifndef SCUMM_HE_MOONBASE_AI_PATTERN_H
+#define SCUMM_HE_MOONBASE_AI_PATTERN_H
+
+namespace Scumm {
+
+const int NO_PATTERN = 0;
+const int PATTERN_FOUND = 1;
+
+class patternInstance {
+private:
+	int _sourceHub;
+	int _unit;
+	int _power;
+	int _angle;
+
+public:
+	patternInstance() {
+		_sourceHub = 0;
+		_unit = 0;
+		_power = 0;
+		_angle = 0;
+	}
+
+	patternInstance(int sh, int unit, int power, int angle) {
+		setSourceHub(sh);
+		setUnit(unit);
+		setPower(power);
+		setAngle(angle);
+	}
+
+	void setSourceHub(int sh) { _sourceHub = sh; }
+	void setUnit(int unit) { _unit = unit; }
+
+	void setPower(int power) {
+		if (power < 300)
+			_power = 1;
+		else if (power < 480)
+			_power = 2;
+		else
+			_power = 3;
+	}
+
+	void setAngle(int angle) {
+		int tempAngle = angle % 360;
+
+		if ((tempAngle >= 0) && (tempAngle < 90))
+			_angle = 1;
+
+		if ((tempAngle >= 90) && (tempAngle < 180))
+			_angle = 2;
+
+		if ((tempAngle >= 180) && (tempAngle < 270))
+			_angle = 3;
+
+		if ((tempAngle >= 270))
+			_angle = 4;
+	}
+
+	int getSourceHub() const { return _sourceHub; }
+	int getUnit() const { return _unit; }
+	int getPowerIndex() const { return _power; }
+	int getAngleIndex() const { return _angle; }
+
+	static int comparePatterns(patternInstance *p1, patternInstance *p2) {
+		if (p1->getSourceHub() != p2->getSourceHub())
+			return 0;
+
+		if (p1->getUnit() != p2->getUnit())
+			return 0;
+
+		if (p1->getUnit() == -999)
+			return 0;
+
+		int temp = abs(p1->getPowerIndex() - p2->getPowerIndex());
+
+		if (temp > 1)
+			return 0;
+
+		temp = abs(p1->getAngleIndex() - p2->getAngleIndex());
+
+		if (temp > 1 && temp < 3)
+			return 0;
+
+		return 1;
+	}
+};
+
+class patternList {
+private:
+	patternInstance *theList[10];
+	int listIndex;
+
+public:
+	patternList() {
+		for (int i = 0; i < 10; i++) {
+			theList[i] = new patternInstance();
+		}
+
+		listIndex = 0;
+	}
+	~patternList() {
+		for (int i = 0; i < 10; i++) {
+			delete theList[i];
+		}
+	}
+
+	void addPattern(int sh, int unit, int power, int angle) {
+		theList[listIndex]->setSourceHub(sh);
+		theList[listIndex]->setUnit(unit);
+		theList[listIndex]->setPower(power);
+		theList[listIndex]->setAngle(angle);
+
+		listIndex++;
+
+		if (listIndex > 9)
+			listIndex = 0;
+	}
+
+	int evaluatePattern(int sh, int unit, int power, int angle) {
+		patternInstance *patternToMatch = new patternInstance(sh, unit, power, angle);
+		int matchCount = 0;
+
+		for (int i = 0; i < 9; i++) {
+			if (patternInstance::comparePatterns(theList[i], patternToMatch)) {
+				matchCount++;
+			}
+		}
+
+		delete patternToMatch;
+
+		if (matchCount > 2)
+			return PATTERN_FOUND;
+
+		return NO_PATTERN;
+	}
+};
+
+} // End of namespace Scumm
+
+#endif