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engines/pegasus/neighborhood/mars/gravitoncannon.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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-1997 Presto Studios, Inc.
+ *
+ * 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 "pegasus/neighborhood/mars/gravitoncannon.h"
+#include "pegasus/neighborhood/mars/robotship.h"
+#include "pegasus/neighborhood/mars/spacejunk.h"
+
+namespace Pegasus {
+
+static const TimeValue kGravitonTime = kOneSecond * kShuttleWeaponScale;
+
+static const CoordType kGravitonOriginH = kShuttleWindowLeft - 1;
+static const CoordType kGravitonOriginV = kShuttleWindowMidV;
+
+static const float kGravitonXOrigin = convertScreenHToSpaceX(kGravitonOriginH, kGravitonMinDistance);
+static const float kGravitonYOrigin = convertScreenVToSpaceY(kGravitonOriginV, kGravitonMinDistance);
+static const float kGravitonZOrigin = kGravitonMinDistance;
+
+// Width of graviton sprite...
+static const CoordType kGravitonMaxScreenWidth = 78;
+static const CoordType kGravitonMaxScreenHeight = 46;
+
+static const float kGravitonWidth = convertScreenHToSpaceX(kShuttleWindowMidH + kGravitonMaxScreenWidth / 2, kGravitonMinDistance)
+		- convertScreenHToSpaceX(kShuttleWindowMidH - kGravitonMaxScreenWidth / 2, kGravitonMinDistance);
+static const float kGravitonHeight = convertScreenVToSpaceY(kShuttleWindowMidV - kGravitonMaxScreenHeight / 2, kGravitonMinDistance)
+		- convertScreenVToSpaceY(kShuttleWindowMidV + kGravitonMaxScreenHeight / 2, kGravitonMinDistance);
+
+GravitonCannon::GravitonCannon() {
+	_weaponDuration = kGravitonTime;
+	setSegment(0, kGravitonTime);
+	_weaponOrigin = Point3D(kGravitonXOrigin, kGravitonYOrigin, kGravitonZOrigin);
+	_rightOrigin = Point3D(-kGravitonXOrigin, kGravitonYOrigin, kGravitonZOrigin);
+}
+
+void GravitonCannon::initShuttleWeapon() {
+	ShuttleWeapon::initShuttleWeapon();
+	_gravitonImage.getImageFromPICTFile("Images/Mars/Graviton Cannon");
+	_gravitonImage.getSurfaceBounds(_gravitonBounds);
+}
+
+void GravitonCannon::cleanUpShuttleWeapon() {
+	_gravitonImage.deallocateSurface();
+	ShuttleWeapon::cleanUpShuttleWeapon();
+}
+
+void GravitonCannon::draw(const Common::Rect &) {
+	// Left graviton...
+	Point3D pt3D = _weaponLocation;
+	pt3D.translate(-kGravitonWidth / 2, kGravitonHeight / 2, 0);
+	Common::Point pt2D;
+	project3DTo2D(pt3D, pt2D);
+	Common::Rect gravitonRect;
+	gravitonRect.left = pt2D.x;
+	gravitonRect.top = pt2D.y;
+
+	pt3D.translate(kGravitonWidth, -kGravitonHeight, 0);
+	project3DTo2D(pt3D, pt2D);
+	gravitonRect.right = pt2D.x;
+	gravitonRect.bottom = pt2D.y;
+
+	_gravitonImage.scaleTransparentCopy(_gravitonBounds, gravitonRect);
+
+	// Right graviton...
+	pt3D = _rightLocation;
+	pt3D.translate(-kGravitonWidth / 2, kGravitonHeight / 2, 0);
+	project3DTo2D(pt3D, pt2D);
+	gravitonRect.left = pt2D.x;
+	gravitonRect.top = pt2D.y;
+
+	pt3D.translate(kGravitonWidth, -kGravitonHeight, 0);
+	project3DTo2D(pt3D, pt2D);
+	gravitonRect.right = pt2D.x;
+	gravitonRect.bottom = pt2D.y;
+
+	_gravitonImage.scaleTransparentCopy(_gravitonBounds, gravitonRect);
+}
+
+void GravitonCannon::updateWeaponPosition() {
+	ShuttleWeapon::updateWeaponPosition();
+	if (_weaponTime != 1.0)
+		linearInterp(_rightOrigin, _weaponTarget, _weaponTime, _rightLocation);
+}
+
+bool GravitonCannon::collisionWithJunk(Common::Point &impactPoint) {
+	if (getDisplayOrder() == kShuttleWeaponFrontOrder) {
+		Point3D junkPosition;
+		g_spaceJunk->getJunkPosition(junkPosition);
+
+		if (junkPosition.z < _weaponLocation.z) {
+			setDisplayOrder(kShuttleWeaponBackOrder);
+			project3DTo2D(_weaponLocation, impactPoint);
+
+			if (g_spaceJunk->pointInJunk(impactPoint))
+				return true;
+
+			project3DTo2D(_rightLocation, impactPoint);
+			return g_spaceJunk->pointInJunk(impactPoint);
+		}
+	}
+
+	return false;
+}
+
+void GravitonCannon::hitJunk(Common::Point impactPoint) {
+	g_spaceJunk->hitByGravitonCannon(impactPoint);
+}
+
+void GravitonCannon::hitShuttle(Common::Point impactPoint) {
+	g_robotShip->hitByGravitonCannon(impactPoint);
+}
+
+} // End of namespace Pegasus