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engines/grim/emi/modelemi.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 GRIM_MODELEMI_H
+#define GRIM_MODELEMI_H
+
+#include "engines/grim/object.h"
+#include "engines/grim/actor.h"
+
+#include "math/matrix4.h"
+#include "math/vector2d.h"
+#include "math/vector3d.h"
+#include "math/vector4d.h"
+#include "math/aabb.h"
+
+namespace Common {
+class SeekableReadStream;
+}
+
+namespace Grim {
+
+class Material;
+
+struct EMIColormap {
+	unsigned char r, g, b, a;
+};
+
+// Todo: port this to math::vector
+struct Vector3int;
+
+class EMICostume;
+class EMIModel;
+struct BoneInfo;
+struct Bone;
+class Skeleton;
+
+class EMIMeshFace {
+public:
+	Vector3int *_indexes;
+	uint32 _indicesEBO;
+	uint32 _faceLength;
+	uint32 _numFaces;
+	uint32 _hasTexture;
+	uint32 _texID;
+	uint32 _flags;
+	EMIModel *_parent;
+
+	enum MeshFaceFlags {
+		kNoLighting = 0x20, // guessed, but distinctive for screen actors
+		kAlphaBlend = 0x10000,
+		kUnknownBlend = 0x40000 // used only in intro screen actors
+	};
+
+	EMIMeshFace() : _faceLength(0), _numFaces(0), _hasTexture(0), _texID(0), _flags(0), _indexes(NULL), _parent(NULL), _indicesEBO(0) { }
+	~EMIMeshFace();
+	void loadFace(Common::SeekableReadStream *data);
+	void setParent(EMIModel *m) { _parent = m; }
+	void render();
+};
+
+/* TODO: Remember to credit JohnDoe for his EMIMeshViewer, as most of the Skeletal
+ * math, and understandings comes from his Delphi-code.
+ */
+class EMIModel : public Object {
+public:
+	enum TextureFlags {
+		BlendAdditive = 0x400
+		// There are more flags, but their purpose is currently unknown.
+	};
+
+	Common::String _meshName;
+	Actor::AlphaMode _meshAlphaMode;
+	float _meshAlpha;
+	int _numVertices;
+	Math::Vector3d *_vertices;
+	Math::Vector3d *_drawVertices;
+	Math::Vector3d *_normals;
+	Math::Vector3d *_drawNormals;
+	Math::Vector3d *_lighting;
+	EMIColormap *_colorMap;
+	Math::Vector2d *_texVerts;
+
+	uint32 _numFaces;
+	EMIMeshFace *_faces;
+	uint32 _numTextures;
+	Common::String *_texNames;
+	uint32 *_texFlags;
+	Material **_mats;
+
+	Skeleton *_skeleton;
+
+	int _numBones;
+
+	// Bone-stuff:
+	int _numBoneInfos;
+	BoneInfo *_boneInfos;
+	Common::String *_boneNames;
+	int *_vertexBoneInfo;
+
+	// Stuff we dont know how to use:
+	float _radius;
+	Math::Vector3d *_center;
+	Math::Vector3d *_boxData;
+	Math::Vector3d *_boxData2;
+	int _numTexSets;
+	int _setType;
+
+	Common::String _fname;
+	EMICostume *_costume;
+
+	void *_userData;
+	bool _lightingDirty;
+
+public:
+	EMIModel(const Common::String &filename, Common::SeekableReadStream *data, EMICostume *costume);
+	~EMIModel();
+	void setTex(uint32 index);
+	void setSkeleton(Skeleton *skel);
+	void loadMesh(Common::SeekableReadStream *data);
+	void prepareForRender();
+	void prepareTextures();
+	void draw();
+	void updateLighting(const Math::Matrix4 &modelToWorld);
+	void getBoundingBox(int *x1, int *y1, int *x2, int *y2) const;
+	Math::AABB calculateWorldBounds(const Math::Matrix4 &matrix) const;
+};
+
+} // end of namespace Grim
+
+#endif