common: add q2 content types (from: https://github.com/id-software/quake-2-tools )

include/common/bspfile.hh

@@ -193,6 +193,8 @@ typedef struct {
     int32_t type;
 } dplane_t;
 
+// Q1 contents
+
 #define CONTENTS_EMPTY -1
 #define CONTENTS_SOLID -2
 #define CONTENTS_WATER -3
@@ -201,6 +203,47 @@ typedef struct {
 #define CONTENTS_SKY   -6
 #define CONTENTS_MIN   CONTENTS_SKY
 
+// Q2 contents (from qfiles.h)
+
+// contents flags are seperate bits
+// a given brush can contribute multiple content bits
+// multiple brushes can be in a single leaf
+
+// these definitions also need to be in q_shared.h!
+
+// lower bits are stronger, and will eat weaker brushes completely
+#define    Q2_CONTENTS_SOLID            1        // an eye is never valid in a solid
+#define    Q2_CONTENTS_WINDOW            2        // translucent, but not watery
+#define    Q2_CONTENTS_AUX            4
+#define    Q2_CONTENTS_LAVA            8
+#define    Q2_CONTENTS_SLIME            16
+#define    Q2_CONTENTS_WATER            32
+#define    Q2_CONTENTS_MIST            64
+#define    Q2_LAST_VISIBLE_CONTENTS    64
+
+// remaining contents are non-visible, and don't eat brushes
+
+#define    Q2_CONTENTS_AREAPORTAL        0x8000
+
+#define    Q2_CONTENTS_PLAYERCLIP        0x10000
+#define    Q2_CONTENTS_MONSTERCLIP    0x20000
+
+// currents can be added to any other contents, and may be mixed
+#define    Q2_CONTENTS_CURRENT_0        0x40000
+#define    Q2_CONTENTS_CURRENT_90        0x80000
+#define    Q2_CONTENTS_CURRENT_180    0x100000
+#define    Q2_CONTENTS_CURRENT_270    0x200000
+#define    Q2_CONTENTS_CURRENT_UP        0x400000
+#define    Q2_CONTENTS_CURRENT_DOWN    0x800000
+
+#define    Q2_CONTENTS_ORIGIN            0x1000000    // removed before bsping an entity
+
+#define    Q2_CONTENTS_MONSTER        0x2000000    // should never be on a brush, only in game
+#define    Q2_CONTENTS_DEADMONSTER    0x4000000
+#define    Q2_CONTENTS_DETAIL            0x8000000    // brushes to be added after vis leafs
+#define    Q2_CONTENTS_TRANSLUCENT    0x10000000    // auto set if any surface has trans
+#define    Q2_CONTENTS_LADDER            0x20000000
+
 typedef struct {
     int32_t planenum;
     int16_t children[2];        /* negative numbers are -(leafs+1), not nodes */