1 files changed, 146 insertions, 0 deletions
diff --git a/src/engine/lightmap.h b/src/engine/lightmap.h
new file mode 100644
index 0000000..51ddc73
--- /dev/null
+++ b/src/engine/lightmap.h
@@ -0,0 +1,146 @@
+#define LM_MINW 2
+#define LM_MINH 2
+#define LM_MAXW 128
+#define LM_MAXH 128
+#define LM_PACKW 512
+#define LM_PACKH 512
+
+struct PackNode
+{
+    PackNode *child1, *child2;
+    ushort x, y, w, h;
+    int available;
+
+    PackNode() : child1(0), child2(0), x(0), y(0), w(LM_PACKW), h(LM_PACKH), available(min(LM_PACKW, LM_PACKH)) {}
+    PackNode(ushort x, ushort y, ushort w, ushort h) : child1(0), child2(0), x(x), y(y), w(w), h(h), available(min(w, h)) {}
+
+    void clear()
+    {
+        DELETEP(child1);
+        DELETEP(child2);
+    }
+
+    ~PackNode()
+    {
+        clear();
+    }
+
+    bool insert(ushort &tx, ushort &ty, ushort tw, ushort th);
+};
+
+enum 
+{ 
+    LM_DIFFUSE = 0, 
+    LM_BUMPMAP0, 
+    LM_BUMPMAP1, 
+    LM_TYPE = 0x0F,
+
+    LM_ALPHA = 1<<4,  
+    LM_FLAGS = 0xF0 
+};
+
+struct LightMap
+{
+    int type, bpp, tex, offsetx, offsety;
+    PackNode packroot;
+    uint lightmaps, lumels;
+    int unlitx, unlity; 
+    uchar *data;
+
+    LightMap()
+     : type(LM_DIFFUSE), bpp(3), tex(-1), offsetx(-1), offsety(-1),
+       lightmaps(0), lumels(0), unlitx(-1), unlity(-1),
+       data(NULL)
+    {
+    }
+
+    ~LightMap()
+    {
+        if(data) delete[] data;
+    }
+
+    void finalize()
+    {
+        packroot.clear();
+        packroot.available = 0;
+    }
+
+    void copy(ushort tx, ushort ty, uchar *src, ushort tw, ushort th);
+    bool insert(ushort &tx, ushort &ty, uchar *src, ushort tw, ushort th);
+};
+
+extern vector<LightMap> lightmaps;
+
+struct LightMapTexture
+{
+    int w, h, type;
+    GLuint id;
+    int unlitx, unlity;
+
+    LightMapTexture()
+     : w(0), h(0), type(LM_DIFFUSE), id(0), unlitx(-1), unlity(-1)
+    {}
+};
+
+extern vector<LightMapTexture> lightmaptexs;
+
+extern bvec ambientcolor, skylightcolor, sunlightcolor;
+extern float sunlightscale;
+extern vec sunlightdir;
+
+extern void clearlights();
+extern void initlights();
+extern void lightents(bool force = false);
+extern void clearlightcache(int id = -1);
+extern void resetlightmaps(bool fullclean = true);
+extern void brightencube(cube &c);
+extern void setsurfaces(cube &c, const surfaceinfo *surfs, const vertinfo *verts, int numverts);
+extern void setsurface(cube &c, int orient, const surfaceinfo &surf, const vertinfo *verts, int numverts);
+extern void previewblends(const ivec &bo, const ivec &bs);
+
+struct lerpvert
+{
+    vec normal;
+    vec2 tc;
+
+    bool operator==(const lerpvert &l) const { return tc == l.tc;; }
+    bool operator!=(const lerpvert &l) const { return tc != l.tc; }
+};
+    
+struct lerpbounds
+{
+    const lerpvert *min;
+    const lerpvert *max;
+    float u, ustep;
+    vec normal, nstep;
+    int winding;
+};
+
+extern void calcnormals(bool lerptjoints = false);
+extern void clearnormals();
+extern void findnormal(const vec &key, const vec &surface, vec &v);
+extern void calclerpverts(const vec2 *c, const vec *n, lerpvert *lv, int &numv);
+extern void initlerpbounds(float u, float v, const lerpvert *lv, int numv, lerpbounds &start, lerpbounds &end);
+extern void lerpnormal(float u, float v, const lerpvert *lv, int numv, lerpbounds &start, lerpbounds &end, vec &normal, vec &nstep);
+
+#define CHECK_CALCLIGHT_PROGRESS_LOCKED(exit, show_calclight_progress, before, after) \
+    if(check_calclight_progress) \
+    { \
+        if(!calclight_canceled) \
+        { \
+            before; \
+            show_calclight_progress(); \
+            check_calclight_canceled(); \
+            after; \
+        } \
+        if(calclight_canceled) { exit; } \
+    }
+#define CHECK_CALCLIGHT_PROGRESS(exit, show_calclight_progress) CHECK_CALCLIGHT_PROGRESS_LOCKED(exit, show_calclight_progress, , )
+
+extern bool calclight_canceled;
+extern volatile bool check_calclight_progress;
+
+extern void check_calclight_canceled();
+
+extern int lightmapping;
+