sv_random_items.qc

Go to the documentation of this file.

#include "sv_random_items.qh"

 
//============================ Constants ======================================
 
//======================= Global variables ====================================
 
// Replace cvars

 
// Map probability cvars


 
// Loot
 
float autocvar_g_random_loot_min; 
float autocvar_g_random_loot_max; 
float autocvar_g_random_loot_time; 
float autocvar_g_random_loot_spread; 
 
// Loot probability cvars



bool random_items_is_spawning = false;
 
//====================== Forward declarations =================================

string RandomItems_GetRandomItemClassNameWithProperty(string prefix,
    .bool item_property);
 
//=========================== Public API ======================================
 
string RandomItems_GetRandomItemClassName(string prefix)
{
    if (MUTATOR_CALLHOOK(RandomItems_GetRandomItemClassName, prefix))
    {
        return M_ARGV(1, string);
    }
    return RandomItems_GetRandomVanillaItemClassName(prefix,
        RANDOM_ITEM_TYPE_ALL);
}
 
string RandomItems_GetRandomVanillaItemClassName(string prefix, int types)
{
    if (types == 0)
    {
        return "";
    }
    while (types != 0)
    {
        string cvar_name;
        RandomSelection_Init();
        if (types & RANDOM_ITEM_TYPE_HEALTH)
        {
            cvar_name = sprintf("g_%s_health_probability", prefix);
            if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
            {
                LOG_WARNF("Random items: cvar %s doesn't exist.", cvar_name);
            }
            else
            {
                RandomSelection_AddFloat(RANDOM_ITEM_TYPE_HEALTH,
                    cvar(cvar_name), 1);
            }
        }
        if (types & RANDOM_ITEM_TYPE_ARMOR)
        {
            cvar_name = sprintf("g_%s_armor_probability", prefix);
            if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
            {
                LOG_WARNF("Random items: cvar %s doesn't exist.", cvar_name);
            }
            else
            {
                RandomSelection_AddFloat(RANDOM_ITEM_TYPE_ARMOR,
                    cvar(cvar_name), 1);
            }
        }
        if (types & RANDOM_ITEM_TYPE_RESOURCE)
        {
            cvar_name = sprintf("g_%s_resource_probability", prefix);
            if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
            {
                LOG_WARNF("Random items: cvar %s doesn't exist.", cvar_name);
            }
            else
            {
                RandomSelection_AddFloat(RANDOM_ITEM_TYPE_RESOURCE,
                    cvar(cvar_name), 1);
            }
        }
        if (types & RANDOM_ITEM_TYPE_WEAPON)
        {
            cvar_name = sprintf("g_%s_weapon_probability", prefix);
            if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
            {
                LOG_WARNF("Random items: cvar %s doesn't exist.", cvar_name);
            }
            else
            {
                RandomSelection_AddFloat(RANDOM_ITEM_TYPE_WEAPON, cvar(cvar_name), 1);
            }
        }
        if (types & RANDOM_ITEM_TYPE_POWERUP)
        {
            cvar_name = sprintf("g_%s_powerup_probability", prefix);
            if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
            {
                LOG_WARNF("Random items: cvar %s doesn't exist.", cvar_name);
            }
            else
            {
                RandomSelection_AddFloat(RANDOM_ITEM_TYPE_POWERUP, cvar(cvar_name), 1);
            }
        }
        int item_type = RandomSelection_chosen_float;
        string class_name = "";
        switch (item_type)
        {
            case RANDOM_ITEM_TYPE_HEALTH:
            {
                class_name = RandomItems_GetRandomItemClassNameWithProperty(
                    prefix, instanceOfHealth);
                break;
            }
            case RANDOM_ITEM_TYPE_ARMOR:
            {
                class_name = RandomItems_GetRandomItemClassNameWithProperty(
                    prefix, instanceOfArmor);
                break;
            }
            case RANDOM_ITEM_TYPE_RESOURCE:
            {
                class_name = RandomItems_GetRandomItemClassNameWithProperty(
                    prefix, instanceOfAmmo);
                break;
            }
            case RANDOM_ITEM_TYPE_WEAPON:
            {
                RandomSelection_Init();
                FOREACH(Weapons, it != WEP_Null &&
                    !(it.spawnflags & WEP_FLAG_MUTATORBLOCKED),
                {
                    cvar_name = sprintf("g_%s_%s_probability", prefix,
                        it.m_canonical_spawnfunc);
                    if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
                    {
                        LOG_WARNF("Random items: cvar %s doesn't exist.",
                            cvar_name);
                        continue;
                    }
                    RandomSelection_AddString(it.m_canonical_spawnfunc,
                        cvar(cvar_name), 1);
                });
                class_name = RandomSelection_chosen_string;
                break;
            }
            case RANDOM_ITEM_TYPE_POWERUP:
            {
                class_name = RandomItems_GetRandomItemClassNameWithProperty(
                    prefix, instanceOfPowerup);
                break;
            }
        }
        if (class_name != "")
        {
            return class_name;
        }
        types &= ~item_type;
    }
    return "";
}
 
//========================= Free functions ====================================

string RandomItems_GetItemReplacementClassNames(entity item)
{
    string cvar_name = sprintf("g_random_items_replace_%s", item.classname);
    if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
    {
        LOG_WARNF("Random items: cvar %s doesn't exist.", cvar_name);
        return "";
    }
    return cvar_string(cvar_name);
}
 
string RandomItems_GetRandomItemClassNameWithProperty(string prefix,
    .bool item_property)
{
    RandomSelection_Init();
    FOREACH(Items, it.item_property && (it.spawnflags & ITEM_FLAG_NORMAL) &&
        Item_IsDefinitionAllowed(it),
    {
        string cvar_name = sprintf("g_%s_%s_probability", prefix,
            it.m_canonical_spawnfunc);
        if (!(cvar_type(cvar_name) & CVAR_TYPEFLAG_EXISTS))
        {
            LOG_WARNF("Random items: cvar %s doesn't exist.", cvar_name);
            continue;
        }
        RandomSelection_AddString(it.m_canonical_spawnfunc, cvar(cvar_name), 1);
    });
    return RandomSelection_chosen_string;
}

entity RandomItems_ReplaceMapItem(entity item)
{
    //PrintToChatAll(strcat("Replacing ", item.classname));
    string new_classnames = RandomItems_GetItemReplacementClassNames(item);
    if (new_classnames == "")
    {
        return NULL;
    }
    string new_classname;
    if (new_classnames == "random")
    {
        new_classname = RandomItems_GetRandomItemClassName("random_items");
        if (new_classname == "")
        {
            return NULL;
        }
    }
    else
    {
        int num_new_classnames = tokenize_console(new_classnames);
        if (num_new_classnames == 1)
        {
            new_classname = new_classnames;
        }
        else
        {
            int classname_index = floor(random() * num_new_classnames);
            new_classname = argv(classname_index);
        }
    }
    //PrintToChatAll(strcat("Replacing with ", new_classname));
    if (new_classname == item.classname)
    {
        return NULL;
    }
    random_items_is_spawning = true;
 
    entity new_item = spawn();
    Item_CopyFields(item, new_item);
    new_item.classname = strzone(new_classname);
    new_item.lifetime = -1; // permanent (not loot)
    if (MUTATOR_IS_ENABLED(ok))
        new_item.ok_item = true;
    Item_Initialise(new_item);
 
    random_items_is_spawning = false;
 
    return wasfreed(new_item) ? NULL : new_item;
}

void RandomItems_SpawnLootItem(vector position)
{
    string class_name = RandomItems_GetRandomItemClassName("random_loot");
    if (class_name == "")
    {
        return;
    }
    vector spread = '0 0 0';
    spread.z = autocvar_g_random_loot_spread / 2;
    spread += randomvec() * autocvar_g_random_loot_spread;
    random_items_is_spawning = true;
 
    entity item = spawn();
    item.classname = class_name;
    item.origin = position;
    item.velocity = spread;
    item.lifetime = autocvar_g_random_loot_time;
    if (MUTATOR_IS_ENABLED(ok))
        item.ok_item = true;
    Item_Initialise(item);
 
    random_items_is_spawning = false;
}
 
//============================= Hooks ========================================
 
MUTATOR_HOOKFUNCTION(random_items, BuildMutatorsString)
{
    M_ARGV(0, string) = strcat(M_ARGV(0, string), ":random_items");
}
 
MUTATOR_HOOKFUNCTION(random_items, BuildMutatorsPrettyString)
{
    M_ARGV(0, string) = strcat(M_ARGV(0, string), ", Random items");
}

MUTATOR_HOOKFUNCTION(random_items, FilterItem, CBC_ORDER_LAST)
{
    //PrintToChatAll("FilterItem");
    if (!autocvar_g_random_items)
    {
        return false;
    }
    if (random_items_is_spawning == true)
    {
        return false;
    }
    entity item = M_ARGV(0, entity);
    if (ITEM_IS_LOOT(item))
    {
        return false;
    }
    if (RandomItems_ReplaceMapItem(item) == NULL)
    {
        return false;
    }
    return true;
}

MUTATOR_HOOKFUNCTION(random_items, ItemTouched, CBC_ORDER_LAST)
{
    //PrintToChatAll("ItemTouched");
    if (!autocvar_g_random_items)
    {
        return;
    }
    entity item = M_ARGV(0, entity);
    if (ITEM_IS_LOOT(item))
    {
        return;
    }
    entity new_item = RandomItems_ReplaceMapItem(item);
    if (new_item == NULL)
    {
        return;
    }
    Item_ScheduleRespawn(new_item);
    delete(item);
}

MUTATOR_HOOKFUNCTION(random_items, PlayerDies)
{
    //PrintToChatAll("PlayerDies");
    if (!autocvar_g_random_loot)
    {
        return;
    }
    entity victim = M_ARGV(2, entity);
    vector loot_position = victim.origin + '0 0 32';
    int num_loot_items = floor(autocvar_g_random_loot_min + random() *
        autocvar_g_random_loot_max);
    for (int item_index = 0; item_index < num_loot_items; ++item_index)
    {
        RandomItems_SpawnLootItem(loot_position);
    }
}