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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _GLOBAL_CONSTANTS_H
#define _GLOBAL_CONSTANTS_H
/**
* @brief footprint scale
*
* Multiplier for {Unit, Feature, Move}Def footprint sizes which are
* assumed to be expressed in "TA units". The resolution of Spring's
* blocking-map is twice that of TA's; each square of a TA footprint
* covers SQUARE_SIZE*2 x SQUARE_SIZE*2 elmos.
*/
static constexpr int SPRING_FOOTPRINT_SCALE = 2;
/**
* @brief square size
*
* Defines the size of 1 heightmap square as 8 elmos.
*/
static constexpr int SQUARE_SIZE = 8;
static constexpr int BUILD_SQUARE_SIZE = SQUARE_SIZE * 2;
/**
* conversion factor from elmos to meters
*/
static constexpr float ELMOS_TO_METERS = 1.0f / SQUARE_SIZE;
/**
* @brief game speed
*
* Defines the game-/sim-frames per second.
*/
static constexpr int GAME_SPEED = 30;
/**
* @brief unit SlowUpdate rate
*
* Defines the interval of SlowUpdate calls in sim-frames.
*/
static constexpr int UNIT_SLOWUPDATE_RATE = 15;
/**
* @brief team SlowUpdate rate
*
* Defines the interval of CTeam::SlowUpdate calls in sim-frames.
*/
static constexpr int TEAM_SLOWUPDATE_RATE = 30;
/**
* @brief max teams
*
* Defines the maximum number of teams as 255
* (254 real teams, and an extra slot for the GAIA team).
*/
static constexpr int MAX_TEAMS = 255;
/**
* @brief max players
*
* Hard limit, currently restricted by the size of the player-ID field
* (1 byte) in network messages with the values 252 to 255 reserved for
* special purposes. (FIXME: max should be 252 then?)
*/
static constexpr int MAX_PLAYERS = 251;
/**
* @brief max AIs
*
* Hard limit, currently restricted by the size of the ai-ID field
* (1 byte) in network messages with the value 255 reserved for
* special purposes.
*/
static constexpr int MAX_AIS = 255;
/**
* @brief max units / features / projectiles
*
* Defines the absolute global maximum number of simulation objects
* (units, features, projectiles) that are allowed to exist in a game
* at any time.
*
* NOTE:
* MAX_UNITS must be LEQ SHORT_MAX (32767) because current network code
* transmits unit IDs as signed shorts. The effective global unit limit
* is stored in UnitHandler::maxUnits, and always clamped to this value.
*
* All types of IDs are also passed to Lua callins, while feature IDs are
* additionally transmitted as (32-bit) floating-point command parameters
* which places a further cap at 1 << 24 (far beyond the realm of feasible
* runtime performance) should these maxima ever be removed.
*/
static constexpr int MAX_UNITS = 32000;
static constexpr int MAX_FEATURES = 32000;
static constexpr int MAX_PROJECTILES = 128000;
/**
* @brief max weapons per unit
*
* Defines the maximum weapons per single unit type as 32.
*/
static constexpr int MAX_WEAPONS_PER_UNIT = 32;
/**
* maximum speed (elmos/frame) a unit is allowed to have outside the map
*/
static constexpr float MAX_UNIT_SPEED = 1e3f;
/**
* maximum impulse strength an explosion is allowed to impart on a unit
*/
static constexpr float MAX_EXPLOSION_IMPULSE = 1e4f;
/**
* if explosion distance is less than speed of explosion multiplied by
* this factor, units are damaged directly rather than N>=1 frames later
*/
static constexpr int DIRECT_EXPLOSION_DAMAGE_SPEED_SCALE = 4;
/**
* maximum range of a weapon-projectile with a flight-time member
*/
static constexpr float MAX_PROJECTILE_RANGE = 1e6f;
/**
* maximum absolute height a projectile is allowed to reach
*/
static constexpr float MAX_PROJECTILE_HEIGHT = 1e6f;
/**
* maximum allowed sensor radius (LOS, airLOS, ...) of any unit, in elmos
* the value chosen is sufficient to cover a 40x40 map with room to spare
* from any point
*/
static constexpr int MAX_UNIT_SENSOR_RADIUS = 32768;
#endif // _GLOBAL_CONSTANTS_H
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