Gamevar

A gamevar is a game variable that can be used to store numerical data which can then be referenced between actors.

The syntax for defining a gamevar is 'gamevar <varname> <value> <flags>'

A gamevar's flags determine how it is referenced by the game. A gamevar with flags of 0 is known as a global variable. A global variable exists once in the code, and any time a global variable is set, the new value is seen by all actors. A gamevar with flags of 1 is a per-player variable. Per-player variables exist once per player in the game, with each player having their own copy of the variable. A gamevar with flags of 2 is a per-actor variable. A per-actor variable exists as many times in the code as there are sprites in the map. Each sprite has its own copy of a per-actor variable in memory.

In the next version of eduke it will be possible to use literal values and defined constants wherever a gamevar is required.

There are other flags but they can only be set when a gamevar is pre-defined by the game not when a gamevar is defined in con. Flags are powers of two to allow combination. The full list is given below.

Name	Number	Description	Page where such variables should be listed
GAMEVAR_FLAG_PERPLAYER	1	per-player variable
GAMEVAR_FLAG_PERACTOR	2	per-actor variable
GAMEVAR_FLAG_USER_MASK	3	bitmask controling what flags can be set from con
GAMEVAR_FLAG_DEFAULT	256	allow override
GAMEVAR_FLAG_SECRET	512	don't dump...
GAMEVAR_FLAG_NODEFAULT	1024	don't add to 'default' array.
GAMEVAR_FLAG_SYSTEM	2048	cannot change mode flags...(only default value)
GAMEVAR_FLAG_READONLY	4096	values are read-only (no setvar allowed)
GAMEVAR_FLAG_PLONG	8192	plValue is a pointer to a long	Constantly updated gamevars