collision.txt

801C8CA0  collision context ?

80361028  col_vtx
8035AD78  col_poly
8035AB90  col_type

typedef struct
{
  int16_t x;
  int16_t y;
  int16_t z;
} z64_xyz_t;

typedef struct
{
  int16_t   poly; /* index of z64_col_poly in scene file */
  uint16_t  next; /* index of next entry to process */
} z64_col_chunk_entry_t;

typedef struct
{
  /* index of z64_col_type in scene file */
  uint16_t    type;
  /* vertex indices, a and b are bitmasked for some reason */
  struct
  {
    uint16_t  unk_00_ : 3;
    uint16_t  va      : 13;
  };
  struct
  {
    uint16_t  unk_01_ : 3;
    uint16_t  vb      : 13;
  };
  uint16_t    vc;
  /* normal vector */
  z64_xyz_t   norm;
  /* plane distance from origin */
  int16_t     dist;
} z64_col_poly_t;

typedef struct
{
  struct
  {
    uint32_t  unk_00_     : 1;
    uint32_t  drop        : 1; /* link drops one unit into the floor */
    uint32_t  special     : 4;
    uint32_t  interaction : 5;
    uint32_t  unk_01_     : 3;
    uint32_t  behavior    : 5;
    uint32_t  exit        : 5;
    uint32_t  camera      : 8;
  } flags_1;                    /* 0x0000 */
  struct
  {
    uint32_t  pad_00_     : 4;
    uint32_t  wall_damage : 1;
    uint32_t  unk_00_     : 6;
    uint32_t  unk_01_     : 3;
    uint32_t  hookshot    : 1;
    uint32_t  echo        : 6;
    uint32_t  unk_02_     : 5;
    uint32_t  terrain     : 2;
    uint32_t  material    : 4;
  } flags_2;                    /* 0x0004 */
} z64_col_type_t;

flags_1                                                 0xFFFFFFFF
unk_00_     = ((flags_1 >> 31) & 0x00000001) (flags_1 & 0x80000000)
drop        = ((flags_1 >> 30) & 0x00000001) (flags_1 & 0x40000000)
special     = ((flags_1 >> 26) & 0x0000000F) (flags_1 & 0x3C000000)
interaction = ((flags_1 >> 21) & 0x0000001F) (flags_1 & 0x03E00000)
unk_01_     = ((flags_1 >> 18) & 0x00000007) (flags_1 & 0x001C0000)
behavior    = ((flags_1 >> 13) & 0x0000001F) (flags_1 & 0x0003E000)
exit        = ((flags_1 >> 8)  & 0x0000001F) (flags_1 & 0x00001F00)
camera      = ((flags_1 >> 0)  & 0x000000FF) (flags_1 & 0x000000FF)

flags_2                                                 0x0FFFFFFF
wall_damage = ((flags_2 >> 27) & 0x00000001) (flags_2 & 0x08000000)
unk_00_     = ((flags_2 >> 21) & 0x0000003F) (flags_2 & 0x07E00000)
unk_00_     = ((flags_2 >> 18) & 0x00000007) (flags_2 & 0x001C0000)
hookshot    = ((flags_2 >> 17) & 0x00000001) (flags_2 & 0x00020000)
echo        = ((flags_2 >> 11) & 0x0000003F) (flags_2 & 0x0001F800)
unk_01_     = ((flags_2 >> 6)  & 0x0000001F) (flags_2 & 0x000007C0)
terrain     = ((flags_2 >> 4)  & 0x00000003) (flags_2 & 0x00000030)
material    = ((flags_2 >> 0)  & 0x0000000F) (flags_2 & 0x0000000F)

/* special */
0x0C: transition (void)
0x0B: link dives
0x0A: ??
0x09: link falls
0x08: edge stops link's speed
0x07: edge stops link's speed and pushes link back a bit
0x06: vine top (link grabs egde)
0x05: transition (load)
0x04: ??
0x03: ??
0x02: ??
0x01: ??
0x00: normal

/* interaction */
0x07  grab
0x06  crawl 2 (?)
0x05  crawl
0x04  vine
0x03  ladder top
0x02  ladder
0x01  not climbable
0x00  normal

/* behavior */
0x0C  quicksand
0x0B  link looks up ??
0x0A  ??
0x09  void
0x08  jabu
0x07  quicksand
0x06  no recoil
0x05  ice
0x04  sand
0x03  lava
0x02  lava
0x01  ??
0x00  normal

/* exit */
0x01+ index in scene's exit list
0x00  nothing (last entrance for special 0x05 and 0x0C)

/* camera */

/* echo */
0x01+ echo level override
0x00  scene default

/* terrain */
0x01  slippery
0x00  normal

/* material */
0x0D  carpet
0x0C  ice
0x0B  dirt
0x0A  wood
0x09  plank
0x08  dirt
0x07  lava
0x06  grass
0x05  water
0x04  shallow water
0x03  wet stone
0x02  stone
0x01  sand
0x00  path

typedef struct
{
  z64_xyz_t pos;
  z64_xyz_t rot;
  int16_t   fov;
  int16_t   unk_00_;
} z64_camera_params_t;

typedef struct
{
  uint16_t mode;
  uint16_t unk_01_;
  uint32_t seg_params;
} z64_camera_t;

typedef struct
{
  z64_xyz_t     pos;
  int16_t       width;
  int16_t       depth;
  struct
  {
    uint32_t    unk_00_ : 12;
    uint32_t    active  : 1;
    uint32_t    group   : 6; /* ? */
    uint32_t    unk_01_ : 5;
    uint32_t    camera  : 8;
  } flags;
} z64_col_water_t;

typedef struct
{
  z64_xyz_t         min;
  z64_xyz_t         max;
  uint16_t          n_vtx;
  z64_xyz_t        *vtx;
  uint16_t          n_poly;
  z64_col_poly_t   *poly;
  z64_col_type_t   *type;
  z64_camera_t     *camera;
  uint16_t          n_water;
  z64_col_water_t  *water;
} z64_col_hdr_t;

ctxt + 0x07C0 (801C8C60) z64_col_hdr_t *col_hdr;