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engines/twp/camera.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 TWP_CAMERA_H
+#define TWP_CAMERA_H
+
+#include "common/func.h"
+#include "math/vector2d.h"
+#include "twp/easing.h"
+#include "twp/rectf.h"
+
+namespace Twp {
+
+class Object;
+class Room;
+
+class Camera {
+public:
+	void setAt(const Math::Vector2d &at);
+	inline Math::Vector2d getAt() const { return _pos; }
+
+	inline void setBounds(const Rectf &bounds) { _bounds = bounds; }
+	inline Rectf getBounds() const { return _bounds; }
+
+	inline void setRoom(Common::SharedPtr<Room> room) { _room = room; }
+	inline Common::SharedPtr<Room> getRoom() const { return _room; }
+
+	inline bool isMoving() const { return _moving; }
+	void panTo(const Math::Vector2d &target, float time, InterpolationKind interpolation);
+
+	void update(Common::SharedPtr<Room> room, Common::SharedPtr<Object> follow, float elapsed);
+
+private:
+	void clamp(const Math::Vector2d &at);
+	void setAtCore(const Math::Vector2d &at);
+
+private:
+	Math::Vector2d _pos;
+	Rectf _bounds = Rectf::fromMinMax(Math::Vector2d(-10000, -10000), Math::Vector2d(10000, 10000));
+	bool _moving = false;
+	Math::Vector2d _init, _target;
+	float _elapsed = 0.f;
+	float _time = 0.f;
+	Common::SharedPtr<Room> _room;
+	Common::SharedPtr<Object> _follow;
+	EasingFunc_t _function = {&linear};
+};
+} // namespace Twp
+
+#endif