Modding:Thing

A thing in DoomRL is a base class that is inherited by beings and items (and the player). This means that beings and items are also things. The thing class is responsible for positioning, flags, resistances, and custom properties.

Properties

Thing
Byte	id	Determines the type of thing (e.g. former human, chaingun, etc) that this is. An item and a being may have the same id without being the same type of thing. This property is read-only.
String	sid	Ids and sids are in one-to-one correspondence. It is generally preferable to write out sids rather than ids to make code more readable. This property is read-only.
DWord	uid	Every instantiated thing has a distinct uid. (In theory, the game could run out of uids and be forced to repeat, but there are enough possibilities that this is inplausible.) This property is read-only.
Char	picture	The character used to represent the thing when it is on the map.
Color	color	The color used to draw the picture when the thing is on the map. This color is sometimes used in menus as well.
String	name	This string is used to describe the thing in various game messages.
String	nameplural	This is the plural of the name string, used in a few game messages.
Word	sprite	This determines the sprite that is used to represent the thing in the graphical version.
LongInt	x	This is the thing's x-coordinate on the map. Typically, this is 0 if the thing isn't on the map. This property is read-only.
LongInt	y	This is the thing's y-coordinate on the map. Typically, this is 0 if the thing isn't on the map. This property is read-only.
Integer	res_bullet	This is the bullet resistance associated with the thing.
Integer	res_melee	This is the melee resistance associated with the thing.
Integer	res_shrapnel	This is the shrapnel resistance associated with the thing.
Integer	res_acid	This is the acid resistance associated with the thing.
Integer	res_fire	This is the fire resistance associated with the thing.
Integer	res_plasma	This is the plasma resistance associated with the thing.
userdata	__ptr	This is a pointer to the pascal object representing the thing. When the pascal object is deallocated, this field is set to nil.

API

Thing
void	thing.displace(Thing self, Coord where)
void	thing.destroy(Thing self)
boolean	thing.flags_get(Thing self, Flag flag)
void	thing.flags_set(Thing self, Flag flag, boolean value)
value	thing.property_get(Thing self, string property)
void	thing.property_set(Thing self, string property, value value)
integer	thing.res_get(Thing self, Resistance resistance)
void	thing.res_set(Thing self, Resistance resistance, integer value)
Coord	Thing:get_position()
integer	Thing:distance_to(Thing or Coord other)
void	Thing:add_property(string key, value value)
void	Thing:remove_property(string key)
boolean	Thing:has_property(string key)
value	Thing:get_property(string key)
void	Thing:set_property(string key, value value)

thing.displace(Thing self, Coord where)

Changes the thing's position to where. This doesn't do any collision checking, so be careful.

---

thing.destroy(Thing self)

Deallocates the memory associated with the thing. Generally, the item or being-specific versions should be used instead (although even these are rarely useful to modders).

---

thing.flags_get(Thing self, Flag flag) → boolean

Thing.flags[Flag flag] → boolean

Determines whether the given flag is present in the thing's flag set.

---

thing.flags_set(Thing self, Flag flag, boolean value)

Thing.flags[Flag flag] = boolean value

Sets or clears the given flag from the thing's flag set.

---

thing.property_get(Thing self, string property) → value

Gets value of the given built-in property. This should usually be avoided in favor of set_property.

---

thing.property_set(Thing self, string property, value value)

Sets the value of the given built-in property. This should usually be avoided in favor of get_property.

---

thing.res_get(Thing self, Resistance resistance) → integer

Thing.resistance[Resistance resistance] → integer

Gets the given resistance of the thing.

---

thing.res_set(Thing self, Resistance resistance, integer value)

Thing.resistance[Resistance resistance] = integer value

Sets the given resistance of the thing.

---

Thing:get_position() → Coord

Returns the thing's position. This is a newly allocated coord; it is independent of the thing.

---

Thing:distance_to(Thing or Coord other) → integer

Returns the distance from the thing to another position or thing.

---

Thing:add_property(string key, value value)

Adds a custom property to the thing with the given initial value. value is optional; it defaults to false.

---

Thing:remove_property(string key)

Removes the given custom property from the thing.

---

Thing:has_property(string key) → boolean

Determines whether the thing has a custom property with the given name.

---

Thing:get_property(string key) → value

Thing[string key] → value

Gets the value of the given built-in or custom property. Usually the dot notation for table indexing is used.

---

Thing:set_property(string key, value value)

Thing[string key] = value value

Sets the given built-in or custom property of the thing to the given value. Usually the dot notation for table indexing is used.