Initial commit

engines/stark/movement/walk.h

@@ -0,0 +1,100 @@
+/* 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 STARK_MOVEMENT_WALK_H
+#define STARK_MOVEMENT_WALK_H
+
+#include "engines/stark/movement/movement.h"
+
+#include "common/array.h"
+
+namespace Stark {
+
+class StringPullingPath;
+
+namespace Resources {
+class FloorPositionedItem;
+}
+
+/**
+ * Make an item walk / run to its destination on the current
+ * location's floor
+ */
+class Walk : public Movement {
+public:
+	Walk(Resources::FloorPositionedItem *item);
+	virtual ~Walk();
+
+	// Movement API
+	void start() override;
+	void stop(bool force = false) override;
+	void onGameLoop() override;
+	bool hasReachedDestination() const override;
+	uint32 getType() const override;
+	void saveLoad(ResourceSerializer *serializer) override;
+
+	/** Set the destination */
+	void setDestination(const Math::Vector3d &destination);
+	void setDestinationWithoutHeight(Math::Vector3d destination);
+
+	/** Change the destination and recompute the path */
+	void changeDestination(const Math::Vector3d &destination);
+
+	/** Set the running flag */
+	void setRunning();
+
+private:
+	void doWalk();
+	void doWalkCollisionSimple();
+	void doWalkCollisionAvoid();
+
+	float computeDistancePerGameLoop() const;
+	float getAngularSpeed() const;
+
+	void changeItemAnim();
+	void updatePath() const;
+
+	void queueDestinationToAvoidItem(Resources::FloorPositionedItem *item, const Math::Vector3d &destination);
+	bool isItemAlreadyAvoided(Resources::FloorPositionedItem *item) const;
+
+	static bool isPointNearPath(const Math::Vector3d &point3d, const Math::Vector3d &pathStart3d, const Math::Vector3d &pathEnd3d);
+
+	Resources::FloorPositionedItem *_item3D;
+	StringPullingPath *_path;
+
+	Math::Vector3d _destination;
+	Common::Array<Math::Vector3d> _destinations;
+
+	Common::Array<Resources::ItemVisual *> _avoidedItems;
+
+	bool _running;
+	bool _reachedDestination;
+	TurnDirection _turnDirection;
+
+	int32 _collisionWaitTimeout;
+	int32 _collisionWaitCount;
+	Math::Vector3d _previousPosition;
+	Math::Vector3d _currentTarget;
+};
+
+} // End of namespace Stark
+
+#endif // STARK_MOVEMENT_WALK_H