SCUMM HE: Added Moonbase Traveller class

3 files changed, 382 insertions, 0 deletions

diff --git a/engines/scumm/he/moonbase/ai_traveller.cpp b/engines/scumm/he/moonbase/ai_traveller.cpp
new file mode 100644
index 0000000000..5437ab1547
--- /dev/null
+++ b/engines/scumm/he/moonbase/ai_traveller.cpp
@@ -0,0 +1,259 @@
+/* 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.
+ *
+ */
+
+#include "scumm/he/moonbase/ai_traveller.h"
+#include "scumm/he/moonbase/ai_main.h"
+
+namespace Scumm {
+
+int Traveller::_targetPosX = 0;
+int Traveller::_targetPosY = 0;
+int Traveller::_maxDist = 0;
+
+int Traveller::_numToGen = 0;
+int Traveller::_sizeAngleStep = 0;
+
+Traveller::Traveller() {
+	_waterFlag = 0;
+	setValueG(0);
+	unsetDisabled();
+}
+
+Traveller::Traveller(int originX, int originY) {
+	_waterFlag = 0;
+	setValueG(0);
+	unsetDisabled();
+
+	_posX = originX;
+	_posY = originY;
+}
+
+void Traveller::adjustPosX(int offsetX) {
+	int maxX = GetMaxX();
+	int deltaX = _posX + offsetX;
+
+	if (deltaX < 0) _posX = maxX + deltaX;
+	else if (deltaX > maxX) _posX = deltaX - maxX;
+	else _posX = deltaX;
+}
+
+void Traveller::adjustPosY(int offsetY) {
+	int maxY = GetMaxX();
+	int deltaY = _posY + offsetY;
+
+	if (deltaY < 0) _posY = maxY + deltaY;
+	else if (deltaY > maxY) _posY = deltaY - maxY;
+	else _posY = deltaY;
+}
+
+void Traveller::adjustXY(int offsetX, int offsetY) {
+	adjustPosX(offsetX);
+	adjustPosY(offsetY);
+}
+
+float Traveller::calcH() {
+	float retVal = 0;
+	// Calc dist from here to target
+	retVal = GetDistance(_posX, _posY, _targetPosX, _targetPosY);
+	// Divide by _maxDist to get minimum number of jumps to goal
+	retVal /= static_cast<float>(_maxDist);
+
+	return retVal * 2.0;
+}
+
+int Traveller::numChildrenToGen() {
+	if (!_numToGen)
+		_numToGen = GetAnimSpeed() + 2;
+
+	return _numToGen;
+}
+
+IContainedObject *Traveller::createChildObj(int index, int &completionFlag) {
+	static int nodeCount = 0;
+	static int completionState = 1;
+
+	if (!index) nodeCount = 0;
+
+	nodeCount++;
+
+	Traveller *retTraveller = new Traveller;
+
+	static int dir, angle, power;
+
+	if (completionState) {
+		// Calculate angle between here and target
+		int directAngle = 0;
+
+		if (GetEnergyHogType())
+			directAngle = GetAngle(_posX, _posY, _targetPosX, _targetPosY, 1);
+		else
+			directAngle = GetAngle(_posX, _posY, _targetPosX, _targetPosY);
+
+		// Calculate the offset angle for this index
+		if (!_sizeAngleStep)
+			_sizeAngleStep = 52 - (GetAnimSpeed() * 7);
+
+		dir = _sizeAngleStep * ((static_cast<int>(index / NUM_POWER_STEPS) + 1) >> 1);
+		// Calculate the sign value for the offset for this index
+		int orientation = dir * (((static_cast<int>(index / NUM_POWER_STEPS) % 2) << 1) - 1);
+		// Add the offset angle to the direct angle to target
+		angle = orientation + directAngle;
+
+		// Calculate power for this index
+		int maxPower = 0;
+		int directDist = GetDistance(_posX, _posY, _targetPosX, _targetPosY);
+
+		if (directDist > _maxDist + 120)
+			maxPower = GetMaxPower();
+		else
+			maxPower = (static_cast<float>(directDist) / static_cast<float>(_maxDist + 120)) * GetMaxPower();
+
+		maxPower -= 70;
+		power = maxPower * (1 - ((index % NUM_POWER_STEPS) * SIZE_POWER_STEP));
+	}
+
+	retTraveller->setAngleTo(angle);
+	retTraveller->setPowerTo(power);
+
+	// Set this object's position to the new one determined by the power and angle from above
+	static int lastSuccessful = 0;
+	int coords = 0;
+
+	if (!(index % NUM_POWER_STEPS) || (!lastSuccessful)) {
+		coords = SimulateBuildingLaunch(_posX, _posY, power, angle, 10, 0);
+		lastSuccessful = 0;
+	} else {
+		completionState = 1;
+		lastSuccessful = 0;
+	}
+
+	if (!coords) {
+		completionFlag = 0;
+		completionState = 0;
+		delete retTraveller;
+		return NULL;
+	} else {
+		completionFlag = 1;
+		completionState = 1;
+	}
+
+	int whoseTurn = GetCurrentPlayer();
+	int maxX = GetMaxX();
+
+	// Check new position to see if landing is clear
+	if (coords > 0) {
+		int yCoord = coords / maxX;
+		int xCoord = coords - (yCoord * maxX);
+
+		int terrain = GetTerrain(xCoord, yCoord);
+		assert(terrain == TERRAIN_TYPE_GOOD);
+
+		float pwr = GetMinPower() * .3;
+		float cosine = cos((static_cast<float>(angle) / 360) * (2 * M_PI));
+		float sine = sin((static_cast<float>(angle) / 360) * (2 * M_PI));
+		int xParam = xCoord + (pwr * cosine);
+		int yParam = yCoord + (pwr * sine);
+
+		if (xParam < 0)
+			xParam += GetMaxX();
+		else if (xParam > GetMaxX())
+			xParam -= GetMaxX();
+
+		if (yParam < 0)
+			yParam += GetMaxY();
+		else if (yParam > GetMaxY())
+			yParam -= GetMaxY();
+
+		if (CheckIfWaterState(xParam, yParam)) {
+			delete retTraveller;
+			return NULL;
+		}
+
+		retTraveller->setPosY(yCoord);
+		retTraveller->setPosX(xCoord);
+
+		// Iterate through the previous action list, making sure this one isn't on it
+		for (intVecItr i = (lastXCoord[whoseTurn]).begin(), j = (lastYCoord[whoseTurn]).begin(); i != (lastXCoord[whoseTurn]).end(); ++i, ++j) {
+			// Check if this shot is the same as the last time we tried
+			if ((*i == retTraveller->getPosX()) && (*j == retTraveller->getPosY())) {
+				retTraveller->setDisabled();
+				delete retTraveller;
+				return NULL;
+			}
+		}
+
+		retTraveller->setValueG(getG() + 7 + (dir * DIRECTION_WEIGHT));
+		lastSuccessful = 1;
+	} else {
+		int yCoord  = -coords / maxX;
+		int xCoord = -coords - (yCoord * maxX);
+
+		// If landing fault is because of water, add 1 extra to g and turn on water flag.  Also set coords, and adjust power to water fault location
+		if (CheckIfWaterState(xCoord, yCoord)) {
+			int terrainSquareSize = GetTerrainSquareSize();
+			xCoord = ((xCoord / terrainSquareSize * terrainSquareSize) + (terrainSquareSize / 2));
+			yCoord = ((yCoord / terrainSquareSize * terrainSquareSize) + (terrainSquareSize / 2));
+
+			int xDist = xCoord - _posX;
+			int yDist = yCoord - _posY;
+			retTraveller->setPosX(xCoord + (terrainSquareSize * 1.414 * (xDist / (abs(xDist) + 1))));
+			retTraveller->setPosY(yCoord + (terrainSquareSize * 1.414 * (yDist / (abs(yDist) + 1))));
+
+			int closestHub = GetClosestUnit(retTraveller->getPosX(), retTraveller->getPosY(), GetMaxX(), GetCurrentPlayer(), 1, BUILDING_MAIN_BASE, 1, 110);
+
+			retTraveller->setWaterSourceX(GetHubX(closestHub));
+			retTraveller->setWaterSourceY(GetHubY(closestHub));
+			retTraveller->setWaterDestX(retTraveller->getPosX());
+			retTraveller->setWaterDestY(retTraveller->getPosY());
+
+			retTraveller->setPowerTo(power);
+			retTraveller->setAngleTo(angle);
+
+			retTraveller->setValueG(getG() + 10 + (dir * DIRECTION_WEIGHT));
+			retTraveller->enableWaterFlag();
+		} else {
+			// If not, set G to highest value
+			retTraveller->setDisabled();
+			delete retTraveller;
+			return NULL;
+		}
+	}
+
+	return retTraveller;
+}
+
+int Traveller::checkSuccess() {
+	if (GetDistance(_posX + 1, _posY, _targetPosX, _targetPosY) < _maxDist)
+		return SUCCESS;
+
+	return 0;
+}
+
+float Traveller::calcT() {
+	assert(!_disabled);
+
+	if (_disabled) return FAILURE;
+
+	return (checkSuccess() != SUCCESS) ? (getG() + calcH()) : SUCCESS;
+}
+
+} // End of namespace Scumm
diff --git a/engines/scumm/he/moonbase/ai_traveller.h b/engines/scumm/he/moonbase/ai_traveller.h
new file mode 100644
index 0000000000..7b1bad9a29
--- /dev/null
+++ b/engines/scumm/he/moonbase/ai_traveller.h
@@ -0,0 +1,122 @@
+/* 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.
+ *
+ */
+
+#ifndef SCUMM_HE_MOONBASE_AI_TRAVELER_H
+#define SCUMM_HE_MOONBASE_AI_TRAVELER_H
+
+#include "scumm/he/moonbase/ai_node.h"
+
+namespace Scumm {
+
+const int NUM_TO_GEN = 9;
+
+const int NUM_POWER_STEPS = 3;
+const double SIZE_POWER_STEP = .15;
+const int SIZE_ANGLE_STEP = 45;
+const int VARIATION_EXTENT = 3;
+const int DIRECTION_WEIGHT = 5;
+
+class Traveller : public IContainedObject {
+private:
+	static int _targetPosX;
+	static int _targetPosY;
+	static int _maxDist;
+
+	static int _numToGen;
+	static int _sizeAngleStep;
+
+	int _sourceHub;
+
+	int _posX;
+	int _posY;
+	int _angleTo;
+	int _powerTo;
+
+	int _disabled;
+	int _waterFlag;
+	int _waterSourceX;
+	int _waterSourceY;
+	int _waterDestX;
+	int _waterDestY;
+
+
+protected:
+	virtual float calcH();
+
+public:
+	Traveller();
+	Traveller(int originX, int originY);
+	~Traveller() {}
+
+	IContainedObject *duplicate() { return this; }
+
+	static void setTargetPosX(int posX) { _targetPosX = posX; }
+	static void setTargetPosY(int posY) { _targetPosY = posY; }
+	static void setMaxDist(int maxDist) { _maxDist = maxDist; }
+
+	void setSourceHub(int sourceHub) { _sourceHub = sourceHub; }
+
+	void setPosX(int posX) { _posX = posX; }
+	void setPosY(int posY) { _posY = posY; }
+	void setAngleTo(int angleTo) { _angleTo = angleTo; }
+	void setPowerTo(int powerTo) { _powerTo = powerTo; }
+
+	void setWaterSourceX(int waterSourceX) { _waterSourceX = waterSourceX; }
+	void setWaterSourceY(int waterSourceY) { _waterSourceY = waterSourceY; }
+
+	void setWaterDestX(int waterDestX) { _waterDestX = waterDestX; }
+	void setWaterDestY(int waterDestY) { _waterDestY = waterDestY; }
+
+	int getSourceHub() const { return _sourceHub; }
+
+	int getPosX() const { return _posX; }
+	int getPosY() const { return _posY; }
+	int getAngleTo() const { return _angleTo; }
+	int getPowerTo() const { return _powerTo; }
+
+	int getWaterSourceX() const { return _waterSourceX; }
+	int getWaterSourceY() const { return _waterSourceY; }
+	int getWaterDestX() const { return _waterDestX; }
+	int getWaterDestY() const { return _waterDestY; }
+
+	void setDisabled() { _disabled = 1; }
+	void unsetDisabled() { _disabled = 0; }
+	int getDisabled() { return _disabled; }
+
+	void adjustPosX(int offsetX);
+	void adjustPosY(int offsetY);
+	void adjustXY(int offsetX, int offsetY);
+
+	void enableWaterFlag() { _waterFlag = 1; }
+	void disableWaterFlag() { _waterFlag = 0; }
+	int GetWaterFlag() const { return _waterFlag; }
+
+	virtual int numChildrenToGen();
+	virtual IContainedObject *createChildObj(int, int &);
+
+	virtual int checkSuccess();
+	virtual float calcT();
+};
+
+} // End of namespace Scumm
+
+#endif
diff --git a/engines/scumm/module.mk b/engines/scumm/module.mk
index d6199f5b01..57b687231f 100644
--- a/engines/scumm/module.mk
+++ b/engines/scumm/module.mk
@@ -142,6 +142,7 @@ MODULE_OBJS += \
 	he/moonbase/ai_defenseunit.o \
 	he/moonbase/ai_node.o \
 	he/moonbase/ai_targetacquisition.o \
+	he/moonbase/ai_traveller.o \
 	he/moonbase/ai_types.o \
 	he/moonbase/ai_weapon.o \
 	he/moonbase/moonbase.o \