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engines/ultima/ultima8/world/egg_hatcher_process.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 "ultima/ultima8/world/egg_hatcher_process.h"
+#include "ultima/ultima8/world/actors/main_actor.h"
+#include "ultima/ultima8/world/teleport_egg.h"
+#include "ultima/ultima8/world/get_object.h"
+#include "ultima/ultima8/ultima8.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+DEFINE_RUNTIME_CLASSTYPE_CODE(EggHatcherProcess)
+
+EggHatcherProcess::EggHatcherProcess() {
+}
+
+
+EggHatcherProcess::~EggHatcherProcess() {
+}
+
+void EggHatcherProcess::addEgg(uint16 egg) {
+	_eggs.push_back(egg);
+}
+
+void EggHatcherProcess::addEgg(Egg *egg) {
+	assert(egg);
+	_eggs.push_back(egg->getObjId());
+}
+
+void EggHatcherProcess::run() {
+	bool nearteleporter = false;
+	MainActor *av = getMainActor();
+	if (!av)
+		return;
+
+	// CONSTANTS!
+	const int range_mul = GAME_IS_U8 ? 32 : 64;
+	const int z_range = 48;
+
+	for (unsigned int i = 0; i < _eggs.size(); i++) {
+		uint16 eggid = _eggs[i];
+		Egg *egg = dynamic_cast<Egg *>(getObject(eggid));
+		if (!egg) continue; // egg gone
+
+		Point3 pte = egg->getLocation();
+
+		//! constants
+		int32 x1 = pte.x - range_mul * egg->getXRange();
+		int32 x2 = pte.x + range_mul * egg->getXRange();
+		int32 y1 = pte.y - range_mul * egg->getYRange();
+		int32 y2 = pte.y + range_mul * egg->getYRange();
+
+		// get avatar location
+		int32 axs, ays, azs;
+		Point3 pta = av->getLocation();
+		av->getFootpadWorld(axs, ays, azs);
+
+		// 'justTeleported':
+		// if the avatar teleports, set the 'justTeleported' flag.
+		// if this is set, don't hatch any teleport eggs
+		// unset it when you're out of range of any teleport eggs
+		TeleportEgg *tegg = dynamic_cast<TeleportEgg *>(egg);
+
+		if (x1 <= pta.x && pta.x - axs < x2 && y1 <= pta.y && pta.y - ays < y2 &&
+		        pte.z - z_range < pta.z && pta.z <= pte.z + z_range) {
+			if (tegg && tegg->isTeleporter())
+				nearteleporter = true;
+
+			if (tegg && av->hasJustTeleported())
+				continue;
+
+			egg->hatch();
+		} else {
+			egg->unhatch();
+		}
+	}
+
+	if (!nearteleporter)
+		av->setJustTeleported(false); // clear flag
+}
+
+void EggHatcherProcess::saveData(Common::WriteStream *ws) {
+	Process::saveData(ws);
+}
+
+
+bool EggHatcherProcess::loadData(Common::ReadStream *rs, uint32 version) {
+	if (!Process::loadData(rs, version)) return false;
+
+	// the eggs will be re-added to the EggHatcherProcess when they're
+	// re-added to the CurrentMap
+
+	return true;
+}
+
+} // End of namespace Ultima8
+} // End of namespace Ultima