#ifndef __ENGINE_H__
#define __ENGINE_H__

#include "cube.hh"
#include "world.hh"
#include "light.hh"

extern dynent *player;
extern physent *camera1;                // special ent that acts as camera, same object as player1 in FPS mode

extern int worldscale, worldsize;
extern int xtraverts, xtravertsva;

// renderlights

extern int calcshadowinfo(const extentity &e, vec &origin, float &radius, vec &spotloc, int &spotangle, float &bias);
extern void rendershadowatlas();
extern bool useradiancehints();
extern void renderradiancehints();
extern void clearradiancehintscache();
extern void cleanuplights();
extern void workinoq();

extern int calcbbcsmsplits(const ivec &bbmin, const ivec &bbmax);
extern int calcspherecsmsplits(const vec &center, float radius);
extern int calcbbrsmsplits(const ivec &bbmin, const ivec &bbmax);
extern int calcspherersmsplits(const vec &center, float radius);

extern int transparentlayer;

extern int gw, gh, gdepthformat, ghasstencil;
extern GLuint gdepthtex, gcolortex, gnormaltex, gglowtex, gdepthrb, gstencilrb;
extern int msaasamples, msaalight;
extern GLuint msdepthtex, mscolortex, msnormaltex, msglowtex, msdepthrb, msstencilrb;
extern vector<vec2> msaapositions;
enum { AA_UNUSED = 0, AA_LUMA, AA_MASKED, AA_SPLIT, AA_SPLIT_LUMA, AA_SPLIT_MASKED };

extern void cleanupgbuffer();
extern void initgbuffer();
extern bool usepacknorm();
extern void maskgbuffer(const char *mask);
extern void bindgdepth();
extern void preparegbuffer(bool depthclear = true);
extern void rendergbuffer(bool depthclear = true);
extern void shadesky();
extern void shadegbuffer();
extern void shademinimap(const vec &color = vec(-1, -1, -1));
extern void shademodelpreview(int x, int y, int w, int h, bool background = true, bool scissor = false);
extern void rendertransparent();
extern void renderao();
extern void loadhdrshaders(int aa = AA_UNUSED);
extern void processhdr(GLuint outfbo = 0, int aa = AA_UNUSED);
extern void copyhdr(int sw, int sh, GLuint fbo, int dw = 0, int dh = 0, bool flipx = false, bool flipy = false, bool swapxy = false);
extern void setuplights();
extern void setupgbuffer();
extern GLuint shouldscale();
extern void doscale(GLuint outfbo = 0);
extern bool debuglights();
extern void cleanuplights();

extern int avatarmask;
extern bool useavatarmask();
extern void enableavatarmask();
extern void disableavatarmask();

// octarender
extern ivec worldmin, worldmax, nogimin, nogimax;
extern vector<tjoint> tjoints;
extern vector<vtxarray *> varoot, valist;

extern ushort encodenormal(const vec &n);
extern vec decodenormal(ushort norm);
extern void guessnormals(const vec *pos, int numverts, vec *normals);
extern void reduceslope(ivec &n);
extern void findtjoints();
extern void octarender();
extern void allchanged(bool load = false);
extern void clearvas(cube *c);
extern void destroyva(vtxarray *va, bool reparent = true);
extern void updatevabb(vtxarray *va, bool force = false);
extern void updatevabbs(bool force = false);

#endif