#pragma once

/// \brief Unconditional maximum amount of resources the player can have.
const int RESOURCE_AMOUNT_HARD_LIMIT = 999;

/// \brief Describes the available resource types.
enum
{
	RESOURCE_HEALTH = 1, ///< Health.
	RESOURCE_ARMOR, ///< Armor.
	RESOURCE_SHELLS, ///< Shells (used by shotgun).
	RESOURCE_BULLETS, ///< Bullets (used by machinegun and rifle)
	RESOURCE_ROCKETS, ///< Rockets (used by mortar, hagar, devastator, etc).
	RESOURCE_CELLS, ///< Cells (used by electro, crylink, vortex, etc)
	RESOURCE_PLASMA, ///< Plasma (unused).
	RESOURCE_FUEL ///< Fuel (used by jetpack).
};

// ============================ Public API ====================================

/// \brief Returns the maximum amount of the given resource.
/// \param[in] e Entity to check.
/// \param[in] resource_type Type of the resource (a RESOURCE_* constant).
/// \return Maximum amount of the given resource.
float GetResourceLimit(entity e, int resource_type);

/// \brief Gives player a resource such as health, armor or ammo.
/// \param[in,out] receiver Entity to give resource to.
/// \param[in] resource_type Type of the resource (a RESOURCE_* constant).
/// \param[in] amount Amount of resource to give.
/// \return No return.
void GiveResource(entity receiver, int resource_type, float amount);

// ===================== Legacy and/or internal API ===========================

/// \brief Converts resource entity property to resource type.
/// \param[in] resource_property Resource entity property to convert.
/// \return Resource type (a RESOURCE_* constant).
int GetResourceType(.float resource_property);

/// \brief Converts resource type (a RESOURCE_* constant) to entity property.
/// \param[in] resource_type Type of the resource.
/// \return Entity proprty for that resource.
.float GetResourceProperty(int resource_type);