#ifndef TILE_H
#define TILE_H
#include <QOpenGLShaderProgram>
#include <QOpenGLBuffer>
#include <QOpenGLVertexArrayObject>
#include <QOpenGLTexture>
#include "vertex.h"
#include "terrain.h"
#include "tilevertexinfo.h"
#include <QVector>
#include "face.h"
class QSceneRenderer;

class Tile
{
public:
    Tile();
    void init(QSceneRenderer* s,int x, int y);
    void paint(QMatrix4x4 p,QVector3D& cameraPosition,QVector3D& cameraUpDirection,QMatrix4x4& vMatrix, float time);
    void buildVertices();
    void buildNormals();
    bool isInitialized() const { return m_initialized; }
    bool normalsBuilt() const { return m_normalsBuilt; }
    void ensureInitialized(QSceneRenderer* s, int x, int y);
    void ensureNormalsBuilt();
    void findFaces(std::vector<Face *> &vec, QVector2D s);
    QVector2D getWorldPosition() const {
        return QVector2D(m_x * (LOD_0_SIZE * 0.75f), m_y * (LOD_0_SIZE_Y * 2.0f) + (m_x % 2 == 0 ? 0.0f : LOD_0_SIZE_Y));
    }
    void addRiverEdge(int edge) { m_riverMask |= (1 << ((edge % 6 + 6) % 6)); }
    void setRiverMask(unsigned char mask) { m_riverMask = mask; }
    unsigned char getRiverMask() const { return m_riverMask; }
    bool hasRiver() const { return m_riverMask != 0; }
    static float getRiverDistance(QVector2D p, unsigned char mask);
protected:
    void addTriangleVertices(int &cnt, QVector2D t1, QVector2D t2, QVector2D t3,int level, int hex, int l1);
    void drawSubTriangleVertices(int &cnt, QVector2D t1, QVector2D t2, QVector2D t3, int hex, int l1, int l2);
    void buildHeights();

    QOpenGLBuffer m_heightsbuffer;
    static QOpenGLBuffer m_vertex;
    static QOpenGLVertexArrayObject m_object;
    static QOpenGLShaderProgram *m_program;
    QSceneRenderer *m_scene;
    static int m_numVertex;
    TileVertexInfo * m_tilevertices;

    std::vector<Face> m_faces;
    Face m_face[6];

    int m_x;
    int m_y;

    float m_startpoint_x;
    float m_startpoint_y;
    bool m_initialized;
    bool m_normalsBuilt;
    unsigned char m_riverMask;
    static Vertex * m_vertices;
    static QOpenGLTexture * m_texture_grass;
    static QOpenGLTexture * m_texture_border;
    static QOpenGLTexture * m_texture_rock;
    static QOpenGLTexture * m_texture_sand;
    static QOpenGLTexture * m_texture_water;
    static QOpenGLTexture * m_texture_snow;
    static QOpenGLTexture * m_texture_typemap;
    static QOpenGLTexture * m_texture_sahara;
    static QOpenGLTexture * m_texture_tundra;
    static QOpenGLTexture * m_texture_redsand;
    static QOpenGLTexture * m_texture_redrock;
    static QOpenGLTexture * m_texture_forest;
    static QOpenGLTexture * m_texture_farm;
    static QImage * m_image_grass;
    static QImage * m_image_rock;
    static QImage * m_image_border;
    static QImage * m_image_sand;
    static QImage * m_image_water;
    static QImage * m_image_snow;
    static QImage * m_image_typemap;
    static QImage * m_image_sahara;
    static QImage * m_image_tundra;
    static QImage * m_image_redsand;
    static QImage * m_image_redrock;
    static QImage * m_image_forest;
    static QImage * m_image_farm;
};

#endif // TILE_H