mirror of
https://github.com/libretro/scummvm.git
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162 lines
4.1 KiB
C++
162 lines
4.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef STARK_RESOURCES_PATH_H
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#define STARK_RESOURCES_PATH_H
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#include "common/rect.h"
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#include "math/vector3d.h"
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#include "common/str.h"
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#include "engines/stark/resources/object.h"
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namespace Stark {
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namespace Formats {
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class XRCReadStream;
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}
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namespace Resources {
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/**
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* A path can be followed by an item in a location
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*
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* Path are made of a list of vertices. Two consecutive vertices delimit an edge.
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* Each vertex has a weight. A higher weight means a higher movement speed.
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*/
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class Path : public Object {
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public:
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static const Type::ResourceType TYPE = Type::kPath;
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enum SubType {
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kPath2D = 1,
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kPath3D = 2
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};
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/** Path factory */
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static Object *construct(Object *parent, byte subType, uint16 index, const Common::String &name);
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Path(Object *parent, byte subType, uint16 index, const Common::String &name);
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virtual ~Path();
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// Resource API
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virtual void readData(Formats::XRCReadStream *stream) override;
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/** Get the edge count in the path */
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virtual uint getEdgeCount() const = 0;
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/**
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* Get a unit vector pointing in the direction of an edge
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*
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* Only valid for 3D paths
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*/
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virtual Math::Vector3d getEdgeDirection(uint edgeIndex) const;
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/** Get the sort key to be used by the item following the path */
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virtual float getSortKey() const;
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/** Get an edge's length */
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float getWeightedEdgeLength(uint edgeIndex) const;
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/** Get the scene position from a position in an edge */
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Math::Vector3d getWeightedPositionInEdge(uint edgeIndex, float positionInEdge);
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protected:
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void printData() override;
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float getEdgeLength(uint edgeIndex) const;
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virtual float getVertexWeight(uint vertexIndex) const = 0;
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virtual Math::Vector3d getVertexPosition(uint vertexIndex) const = 0;
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uint32 _field_30;
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};
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/**
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* A 2D path for 2D items
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*/
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class Path2D : public Path {
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public:
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Path2D(Object *parent, byte subType, uint16 index, const Common::String &name);
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virtual ~Path2D();
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struct Vertex {
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float weight;
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Common::Point position;
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};
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// Resource API
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void readData(Formats::XRCReadStream *stream) override;
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// Path API
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uint getEdgeCount() const override;
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protected:
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float getVertexWeight(uint vertexIndex) const override;
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Math::Vector3d getVertexPosition(uint vertexIndex) const override;
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private:
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// Resource API
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void printData() override;
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Common::Array<Vertex> _vertices;
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};
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/**
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* A 3D path for 3D items
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*/
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class Path3D : public Path {
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public:
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Path3D(Object *parent, byte subType, uint16 index, const Common::String &name);
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virtual ~Path3D();
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struct Vertex {
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float weight;
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Math::Vector3d position;
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};
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// Resource API
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void readData(Formats::XRCReadStream *stream) override;
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// Path API
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uint getEdgeCount() const override;
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float getSortKey() const override;
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Math::Vector3d getEdgeDirection(uint edgeIndex) const override;
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/** Get the full position in world coordinates of one of the vertices of the path */
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Math::Vector3d getVertexPosition3D(uint vertexIndex, int32 *faceIndex);
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protected:
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float getVertexWeight(uint vertexIndex) const override;
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Math::Vector3d getVertexPosition(uint vertexIndex) const override;
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private:
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// Resource API
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void printData() override;
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Common::Array<Vertex> _vertices;
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float _sortKey;
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};
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} // End of namespace Resources
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} // End of namespace Stark
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#endif // STARK_RESOURCES_PATH_H
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