tileidx_feature(DNGN_UNSEEN);

                tileidx_feature(DNGN_UNSEEN, x, y);

int tileidx_feature(int object);

int tileidx_feature(int object, int gx, int gy);

#include "traps.h"

int tileidx_feature(int object)

static int tileidx_trap(trap_type type)
{
    switch (type)
    {
    case TRAP_DART:
        return TILE_DNGN_TRAP_DART;
    case TRAP_ARROW:
        return TILE_DNGN_TRAP_ARROW;
    case TRAP_SPEAR:
        return TILE_DNGN_TRAP_SPEAR;
    case TRAP_AXE:
        return TILE_DNGN_TRAP_AXE;
    case TRAP_TELEPORT:
        return TILE_DNGN_TRAP_TELEPORT;
    case TRAP_ALARM:
        return TILE_DNGN_TRAP_ALARM;
    case TRAP_BLADE:
        return TILE_DNGN_TRAP_BLADE;
    case TRAP_BOLT:
        return TILE_DNGN_TRAP_BOLT;
    case TRAP_NET:
        return TILE_DNGN_TRAP_NET;
    case TRAP_ZOT:
        return TILE_DNGN_TRAP_ZOT;
    case TRAP_NEEDLE:
        return TILE_DNGN_TRAP_NEEDLE;
    case TRAP_SHAFT:
        return TILE_DNGN_TRAP_SHAFT;
    default:
        return TILE_ERROR;
    }
}
int tileidx_feature(int object, int gx, int gy)

        return TILE_DNGN_ROCK_WALL_OFS;

        return TILE_DNGN_ROCK_WALL_OFS;

        return (unsigned int)grid_secret_door_appearance(gx, gy);

        return TILE_DNGN_TRAP_MECHANICAL;

        return TILE_DNGN_TRAP_MAGICAL;

        return TILE_DNGN_TRAP_SHAFT;

        return tileidx_trap(trap_type_at_xy(gx, gy));

        case '^': res = TILE_DNGN_TRAP_MAGICAL; break;

        case '^': res = TILE_DNGN_TRAP_ZOT; break;

                tile_dngn[gc.x][gc.y] = tileidx_feature(object);

                tile_dngn[gc.x][gc.y] = tileidx_feature(object, gc.x, gc.y);

dngn_trap_mechanical DNGN_TRAP_MECHANICAL
dngn_trap_magical DNGN_TRAP_MAGICAL

dngn_trap_dart DNGN_TRAP_DART
dngn_trap_arrow DNGN_TRAP_ARROW
dngn_trap_spear DNGN_TRAP_SPEAR
dngn_trap_axe DNGN_TRAP_AXE
dngn_trap_teleport DNGN_TRAP_TELEPORT
dngn_trap_alarm DNGN_TRAP_ALARM
dngn_trap_blade DNGN_TRAP_BLADE
dngn_trap_bolt DNGN_TRAP_BOLT
dngn_trap_net DNGN_TRAP_NET
dngn_trap_zot DNGN_TRAP_ZOT
dngn_trap_needle DNGN_TRAP_NEEDLE

dngn_trap_iii DNGN_TRAP_III

    if (feature == DNGN_SECRET_DOOR)
        feature = (unsigned int)grid_secret_door_appearance(x, y);

    int t = tileidx_feature(feature);

    int t = tileidx_feature(feature, gc.x, gc.y);

                env.tile_bk_bg[x][y] = tileidx_feature(DNGN_UNSEEN);

                env.tile_bk_bg[x][y] = tileidx_feature(DNGN_UNSEEN, x, y);