Mission Parameters – Arma 3

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[[Category:Arma 3: Editing|Mission Parameters]]
#REDIRECT [[Mission Parameters]]
 
Server admin / host can customize multiplayer missions in ROLE ASSIGNMENT menu using parameters prepared by the mission designer.
 
Important limitation. In an MP environment, the Paramsarray is not available on the client until some time after preinit. but before postinit so any code called upon the client should take this into consideration
 
== Overview ==
 
Mission parameters are integer values that are passed to the mission at the beginning and which are used by the mission designer to customise user experience accordingly. The parameters are set in [[description.ext]]. They can also be either manually altered by a dedicated server admin or host during ROLE ASSIGNMENT in MP lobby from available parameters menu or by including override values in dedicated server config [[server.cfg]]. In short:
 
* Mission maker can set up a list of parameters for the game and set default values for each
* Dedicated server admin or host can change default values by selection different options from provided parameters menu
* Dedicated server owner can additionally override the default values in server config for each mission separately
 
In any case, a person selecting parameters from parameters menu at the beginning of the mission has the final say what those options will be.
 
== Manual Params ==
=== Config ===
[[File:Arma3 Mission Parameters.png|thumb|Mission Parameters selection]]
Params are defined in [[description.ext]].
class Params
{
class AISkill
{
title = "AI Skill"; {{codecomment|// Param name visible in the list}}
values[] = {20,60,100}; {{codecomment|// Values; must be integers; has to have the same number of elements as 'texts'}}
texts[] = {"Recruit","Regular","Veteran"}; {{codecomment|// Description of each selectable item}}
default = 60; {{codecomment|// Default value; must be listed in 'values' array, otherwise 0 is used}}
                {{codecomment|// Default values that are not whole numbers do not work. Param will default to 0 (or 1 if defined)}}
};
class Daytime
{
title = "Time";
texts[] = {"Morning","Day","Evening","Night"};
values[] = {6,12,18,0};
default = 12;
function = "BIS_fnc_paramDaytime"; {{codecomment|// (Optional) [[Functions_Library_(Arma_3)|Function]] [[call]]ed when player joins, selected value is passed as an argument}}
  isGlobal = 1; {{codecomment|// (Optional) 1 to execute script / function locally for every player who joins, 0 to do it only on server}}
};
class ViewDistance
{
title = "View distance (in metres)";
values[] = {500,1000,2000,5000};
{{codecomment|// When 'texts' are missing, values will be displayed directly instead}}
default = 1000;
file = "setViewDistance.sqf"; {{codecomment|// (Optional) Script [[call]]ed when player joins, selected value is passed as an argument}}
};
};
 
=== Mission ===
Selected values are stored in '''paramsArray''' array, accessible anytime during the mission on any connected computer. Their order is the same as is in description.cfg (for example, params above would result in [12,1] if default values were kept).
 
'''Example (can be used in [[init.sqf]]):'''
if ([[isServer]]) then {
_skill = paramsArray [[select]] 0;
{
_x [[setSkill]] _skill;
} [[forEach]] [[allUnits]];
};
 
'''setViewDistance.sqf:'''
[[setViewDistance]] ([[_this]] select 0);
 
=== Functions ===
When you're not sure about order of '''paramsArray''' items (e.g., in a module which can be used in any mission), you can use [[BIS_fnc_getParamValue]] to get value of a param with given classname.
 
_viewDistance = "ViewDistance" call BIS_fnc_getParamValue;
 
 
== Predefined Params ==
Arma 3 introduces a framework for defining commonly used params (e.g., time of the day or mission duration), which can be shared across multiple missions. Once included to description.ext, they will initialize automatically. Some of them can be further customized using specific [[PreProcessor_Commands|macros]].
 
class Params
{
#include "\a3\functions_f\Params\paramWeather.hpp"
#define TICKETS_DEFAULT 600
#include "\a3\functions_f\Params\paramRespawnTickets.hpp"
};
 
{{Important|Param templates currently don't work with PBO missions manually copied to MPMissions folder. Unpacked missions, Steam missions and [[Mission_Export#Addon_Format|missions which are part of an addon]] works correctly.}}
 
=== Available Templates ===
{| class="wikitable sortable"
 
! File
! Description
! Optional variables
 
|-
| <code>\a3\functions_f\Params\paramCountdown.hpp</code>
| Set mission countdown (in seconds)
|
#define COUNTDOWN_MIN 600
#define COUNTDOWN_MAX 3600
#define COUNTDOWN_DEFAULT -1
 
|-
| <code>\a3\functions_f\Params\paramDaytimeHour.hpp</code>
| Set starting hour, options are represented by whole hours
|
{{codecomment| //Can be any integer between 0 and 23}}
#define DAYTIMEHOUR_DEFAULT 19
 
|-
| <code>\a3\functions_f\Params\paramDaytimePeriod.hpp</code>
| Set starting hour, options are described by words
|
{{codecomment| //Can be 0, 6, 12 or 18}}
#define DAYTIMEPERIOD_DEFAULT 12
 
|-
| <code>\a3\functions_f\Params\paramDebugConsole.hpp</code>
| Allow [[Mission_Editor:_Debug_Console|debug console]] for logged in admin
|
{{codecomment| //0 (disabled) or 1 (enabled)}}
#define DEBUGCONSOLE_DEFAULT 1
 
|-
| <code>\a3\functions_f\Params\paramGuerFriendly.hpp</code>
| Set to whom will [[independent]] side be friendly
|
{{codecomment| //Can be any -1 (Nobody}, 0 (OPFOR), 1 (BLUFOR) or 2 (Everybody)}}
#define GUERFRIENDLY_DEFAULT -1
 
|-
| <code>\a3\functions_f\Params\paramRespawnTickets.hpp</code>
| Set respawn tickets for all sides
|
#define TICKETS_MIN 100
#define TICKETS_MAX 1100
#define TICKETS_DEFAULT -1
 
|-
| <code>\a3\functions_f\Params\paramWeather.hpp</code>
| Set default weather
|
{{codecomment| //Can be 0 (sunny), 25, 50, 75 or 100 (storm))}}
#define WEATHER_DEFAULT 40
 
|-
| <code>\a3\Functions_F_MP_Mark\Params\paramTimeAcceleration.hpp</code>
| Sets a time multiplier for in-game time. See [[setTimeMultiplier|setTimeMultiplier]]
|
{{codecomment| //Can be x1, x2, x5, x10 or x20}}
#define TIMEACCELERATION_DEFAULT 10
 
|-
| <code>\a3\Functions_F_Heli\Params\paramViewDistance.hpp</code>
| Set rendering distance, in meters. See [[setViewDistance|setViewDistance]]
|
#define VIEW_DISTANCE_MIN 1500
#define VIEW_DISTANCE_MAX 4000
#define VIEW_DISTANCE_DEFAULT 2000
 
|}

Latest revision as of 22:21, 24 June 2022

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