Used by the routines at DO_ROOM_COMMAND and PLACE_ROOM_OBJECTS.

Makes the record at IX for an object whose type is at HL, from the type's template and the bytes that follow the type, and counts it in OBJECT_COUNT. It serves both the object table (PLACE_ROOM_OBJECTS) and the objects a room's own commands put down in object mode (DO_ROOM_COMMAND), which are written the same way as the table's things without the room.

A type below $46 has an 11-byte template (TEMPLATES) and four bytes after it: +12 (the thing's kind, and whether it can be picked up), then its place, +6 to +8 (along the floor, the height of its top, across the floor). The template gives +0 to +5 (where its sprite goes on the screen, the sprite's size and the sprite), +9 to +11 (its length along, its height and its length across, each from the corner at +6 to +8) and two more bytes: +14, whose low nibble is the kind of movement the object dispatcher (CHE3D) acts on, and +16 (bits 0-4: 0 for an object that stays put, which the object dispatcher passes over, else 16 plus its weight, PICK_UP_LOOK_ON; bit 5 set while it is carried or gone).

A type from $46 has a 9-byte template (LARGE_TEMPLATES, less $46) and nine bytes after it: the place, then six bytes for +13 to +18, which the door code reads (BUMPED). Its +12 is 1, the kind that the object dispatcher passes over. A room's commands only ever put down types below $46 -- they take five bytes each (DO_ROOM_COMMAND), which would not do for these.

The template's screen position is right for an object standing at 50, 50 with its floor at 50, so the record is first given that place (the top is 50 plus the height) and ISO_MOVE moves it from there to the place asked for plus the origin, moving the screen position with it. Then a thing's movement gets its starting state by kind: +15 is 1, and +13 and +17 are set for kinds 3 and 4-10 (and for kind 2, which no template has, so that code never runs).