/// <summary>
/// Generates the loot within all specified parameters, depending on level & difficulty.
/// </summary>
/// <returns>The loot.</returns>
/// <param name="map">Map to get the levelNumber and difficulty from. If unspecified uses set values. </param>
public GameItem[] GenerateLoot(Map map = null)
{
if (map != null)
{
SetLevelAndDifficulty(map);
}
//Set loot parameters depending on level & difficulty
int maxDifficulty = Enum.GetValues(typeof(Settings.Difficulty)).Length - 1;
int minItems_base = Mathf.RoundToInt(minItemsBase_hardest + minItemsBase_modifier * (maxDifficulty - difficulty));
int maxItems_base = Mathf.RoundToInt(maxItemsBase_hardest + maxItemsBase_modifier * (maxDifficulty - difficulty));
int levelsTillMinItemGain = Mathf.RoundToInt(levelsTillMinItemGain_easiest * Mathf.Pow(levelsTillMinItemGain_multiplier, difficulty));
int levelsTillMaxItemGain = Mathf.RoundToInt(levelsTillMaxItemGain_easiest * Mathf.Pow(levelsTillMaxItemGain_multiplier, difficulty));
int minItems_gain = (int)levelNumber / levelsTillMinItemGain;
int maxItems_gain = (int)levelNumber / levelsTillMaxItemGain;
int minItems = Mathf.Min(minItems_base + minItems_gain, minLootCap);
int maxItems = Mathf.Min(maxItems_base + maxItems_gain, maxLootCap);
if (minItems > maxItems)
{
minItems = maxItems;
}
//Rarity
int minRarityBase = Mathf.RoundToInt((int)minRarityBase_hardest + minRarityBase_modifier * (maxDifficulty - difficulty));
int levelsTillMinRarityGain = Mathf.RoundToInt(levelsTillMinRarityGain_easiest * Mathf.Pow(levelsTillMinRarityGain_multiplier, difficulty));
int minRarity_gain = (int)levelNumber / levelsTillMinRarityGain;
GameItem.ItemRarity minRarity = (GameItem.ItemRarity)Mathf.Min(minRarityBase + minRarity_gain, (int)minRarityCap);
//Generate loot in secret room
return(ItemSpawner.GenerateLootBag((int)Time.time, levelNumber, minItems, maxItems, minRarity, false, healthPotionChance));
}
/// <summary>
/// Generates a health potion.
/// </summary>
/// <returns>The health potion.</returns>
/// <param name="seed">Seed.</param>
/// <param name="quality">Quality.</param>
/// <param name="rarity">Rarity.</param>
/// <param name="useSeed">If set to <c>true</c> use seed.</param>
public static UsableItem GenerateHealthPotion(int seed, int quality, GameItem.ItemRarity rarity, bool useSeed = false)
{
//TODO: incorporate quality more by allowing custom healing amounts
//Allow 1 more potential potion every 5 levels, up to the max stack of course.
Random random = GetRandom(seed, useSeed);
int potionMaxStack = 5;
int maxAmount = UnityEngine.Mathf.Min((int)(quality / 5) + 1, potionMaxStack);
int quantity = random.Next(1, maxAmount + 1);
UsableItem healthPotion = new UsableItem(null, null, "Health Potion", "A health potion.", 1, rarity, quantity, potionMaxStack, 100, "HealthPotionAction");
SetItemSprites(seed, "Health Potion", healthPotion, useSeed);
return(healthPotion);
}
/// <summary>
/// Generation function designed to build a weapon item of some sort. Can be a melee or ranged weapon.
/// </summary>
/// <param name="seed">Seed to use for generation, useful for testing. Set this to system time during playtime.</param>
/// <param name="quality">Quality modifier for items. Essentially represents how deep in the dungeon the player is. Pass this from the map class ideally.</param>
/// <param name="rarity">Minimum item rarity, defaults to common. Higher rarity items have better stats implicitly.</param>
/// <returns>A weapon item, with name and description pre-set based on the item spec.</returns>
public static WeaponItem GenerateWeapon(int seed, int quality, GameItem.ItemRarity rarity = GameItem.ItemRarity.COMMON, bool useSeed = true)
{
// Some constants to use for calculations:
int meleeWeight = 1; // Weighted likelyhood to pick this over the other.
int rangedWeight = 0; // Weighted likelyhood to pick this over the other.
// Note we are using the system's random, and not Unity's in order to use a seed.
Random random = GetRandom(seed, useSeed);
// Choose what type of thing to generate, Ranged? Melee?
int val = random.Next(1, meleeWeight + rangedWeight);
// Generate basic stats, these apply to all weapons
int rareVal = (int)rarity;
double[] damageScale = { 1, 10, 25, 60, 135, 250 }; // Damage range dependent on rarity, For rarity i, minimum is damageScale[i]
double[] rofMin = { 1, 2, 3, 4, 5 }; // TODO: PLEASE BALANCE THIS
double[] rofMax = { 2, 4, 6, 8, 10 };
double rangeMin = 1;
double rangeMax = 5; // Ranged weapon range is x10 this.
// Get Damage Value; utilizes quality and rarity to help it scale.
double damage = random.NextDouble() * (damageScale[rareVal + 1] - damageScale[rareVal]) + damageScale[rareVal];
damage = damage + damage * (quality / floorRarityBoostThreshold);
// Get Range Value; depdenent on nothing.
double range = random.NextDouble() * (rangeMax - rangeMin) + rangeMin;
// Get Rate Of Fire; higher rarities increase this value.
double rof = random.NextDouble() * (rofMax[rareVal] - rofMin[rareVal]) + rofMin[rareVal];
// Call other generation functions based on this.
if (val >= rangedWeight)
{
return(GenerateMeleeWeapon(seed, quality, damage, range, rof, (int)rarity, useSeed));
}
else
{
return(GenerateRangedWeapon(seed, quality, damage, range * 10, rof, (int)rarity, useSeed));
}
}
/// <summary>
/// Generation function designed to build an either a weapon or armor.
/// </summary>
/// <param name="seed">Seed to use for generation, useful for testing. Set this to system time during playtime.</param>
/// <param name="quality">Quality modifier for items. Essentially represents how deep in the dungeon the player is. Pass this from the map class ideally.</param>
/// <param name="rarity">Minimum item rarity, defaults to common. Higher rarity items have better stats implicitly.</param>
/// <returns>An item, with name and description pre-set based on the item spec.</returns>
public static GameItem GenerateItem(int seed, int quality, GameItem.ItemRarity rarity = GameItem.ItemRarity.COMMON, bool useSeed = true)
{
// Some constants to use for calculations:
int armorWeight = 2; // Weighted likelyhood to pick this over the other.
int weaponWeight = 1; // Weighted likelyhood to pick this over the other.
// Note we are using the system's random, and not Unity's in order to use a seed.
Random random = GetRandom(seed, useSeed);
// Choose what type of thing to generate, armor, or a weapon?
int val = random.Next(1, armorWeight + weaponWeight + 1);
// Call other generation functions based on this.
if (val >= weaponWeight)
{
return(GenerateWeapon(seed, quality, rarity, useSeed));
}
else
{
return(GenerateArmor(seed, quality, rarity, useSeed));
}
}
/// <summary>
/// Generation function designed to build an armor item for spawning. Can fit any slot.
/// </summary>
/// <param name="seed">Seed to use for generation, useful for testing. Set this to system time during playtime.</param>
/// <param name="rarity">Minimum item rarity, defaults to common. Higher rarity items have better stats implicitly.</param>
/// <returns>A weapon item, with name and description pre-set based on the item spec.</returns>
public static ArmorItem GenerateArmor(int seed, int quality, GameItem.ItemRarity rarity = GameItem.ItemRarity.COMMON, bool useSeed = true)
{
// Some constants to use for calculations:
double[] minArmorRarityRatings = { 1, 2, 3, 4, 5 }; // Scaling factor for minimum based on rarity. Min * RarityRating = Absolute Minimum
double[] minArmorRatings = { 5, 10, 15, 5, 1, 1 }; // Minimum rating per armor slot, in enum order.
double[] maxArmorRatings = { 20, 50, 100, 10, 5, 5 }; // Maximum rating per armor slot, in enum order.
double[] minSpeedRarityRatings = { 1, 1.25, 1.5, 1.75, 2 }; // Scaling factor for minimum based on rarity.
double[] minSpeedRatings = { 0, 1, 0, 0, 1, 1 }; // Minimum rating per armor slot, in enum order.
double[] maxSpeedRatings = { 2, 5, 2, 1, 5, 5 }; // Maximum rating per armor slot, in enum order.
double[] minDamageRarityRatings = { 1, 1.25, 1.5, 1.75, 2 }; // Scaling factor for minimum based on rarity.
double[] minDamageRatings = { 0, 0, 0, 1, 1, 1 }; // Minimum rating per armor slot, in enum order.
double[] maxDamageRatings = { 2, 2, 2, 5, 5, 5 }; // Maximum rating per armor slot, in enum order.
// For reference, ENUM Order: HEAD, LEGS, CHEST, GLOVES, RING, NECK.
// Note we are using the system's random, and not Unity's in order to use a seed.
Random random = GetRandom(seed, useSeed);
// Select rarity first; this determines effectiveness.
int totalWeight = 0;
for (int i = 0; i < rarityWeights.Length; i++)
{
totalWeight += rarityWeights[i];
}
int randRarity = random.Next(totalWeight);
int trueRarity = -1;
totalWeight = rarityWeights[0];
for (int i = 1; i < rarityWeights.Length && trueRarity == -1; i++)
{
if (randRarity < totalWeight)
{
trueRarity = i - 1;
}
totalWeight += rarityWeights[i];
}
// Rarity is guaurnteed to increase for every X floors of depth.
trueRarity += (quality / floorRarityBoostThreshold);
if (trueRarity > 4)
{
trueRarity = 4;
}
// Determine slot for armor.
int trueSlot = random.Next(Enum.GetNames(typeof(EquipmentManager.EquipSlot)).Length);
// Determine sprite info (somehow). TODO (I'm not sure how to do this)
// Calculate the armor's values.
double weightedMinArmor = minArmorRatings[trueSlot] * minArmorRarityRatings[trueRarity];
if (weightedMinArmor > maxArmorRatings[trueSlot])
{
weightedMinArmor = maxArmorRatings[trueSlot];
}
double weightedMinSpeed = minSpeedRatings[trueSlot] * minSpeedRarityRatings[trueRarity];
if (weightedMinArmor > maxSpeedRatings[trueSlot])
{
weightedMinArmor = maxSpeedRatings[trueSlot];
}
double weightedMinDamage = minDamageRatings[trueSlot] * minDamageRarityRatings[trueRarity];
if (weightedMinArmor > maxDamageRatings[trueSlot])
{
weightedMinArmor = maxDamageRatings[trueSlot];
}
double armor = random.NextDouble() * (maxArmorRatings[trueSlot] - weightedMinArmor) + weightedMinArmor;
double speed = random.NextDouble() * (maxSpeedRatings[trueSlot] - weightedMinSpeed) + weightedMinSpeed;
double damage = random.NextDouble() * (maxDamageRatings[trueSlot] - weightedMinDamage) + weightedMinDamage;
// Determine, based on rarity, if armor is allowed to have speed or damage.
if (trueRarity < 1)
{
speed = 0;
damage = 0;
}
else if (trueRarity < 2)
{
if (speed > damage)
{
damage = 0;
}
else
{
speed = 0;
}
}
// Build the armor item.
ArmorItem newItem = new ArmorItem((EquipmentManager.EquipSlot)trueSlot, armor, speed, damage)
{
Rarity = (GameItem.ItemRarity)trueRarity
};
// Generate a name.
newItem.Name = GenerateArmorName(seed, newItem, minArmorRatings, maxArmorRatings, minSpeedRatings, maxSpeedRatings, minDamageRatings, maxDamageRatings, useSeed);
// Generate a description.
newItem.Description = GenerateArmorDesc(seed, newItem, useSeed);
// Pick a value rating. (Should probably be another utility method).
newItem.Value = GenerateItemValue(newItem);
// Generate a unique ID (this might require some internal memory somewhere to keep track of what IDs have already been assigned, probably another utility function).
newItem.ItemID = GenerateItemID();
// Return the finished item.
return(newItem);
}
/// <summary>
/// Generation function designed to build an array of game items, can be potions, equipment, or just misc stuff.
/// Function is primarily used for spawning more than one thing in a treasure room.
/// </summary>
/// <param name="seed">Seed to use for generation, useful for testing. Set this to system time during playtime.</param>
/// <param name="quality">Quality modifier for items. Essentially represents how deep in the dungeon the player is. Pass this from the map class ideally.</param>
/// <param name="min">Minimum amount of items that are allowed to spawn, inclusive.</param>
/// <param name="max">Maximum amount of items that are allowed to spawn, inclusive.</param>
/// <param name="rarity">Minimum item rarity, defaults to common. Higher rarity items have better stats implicitly.</param>
/// <param name="healthPotionChance"> % chance from [0, 1] inclusive that any item dropped will be a health potion.</param></param>
/// <returns>An equippable item, with name and description pre-set based on the item spec.</returns>
public static GameItem[] GenerateLootBag(int seed, int quality, int min = 1, int max = 5, GameItem.ItemRarity rarity = GameItem.ItemRarity.COMMON, bool useSeed = true, double healthPotionChance = 0.0)
{
// Random generation seed is set before doing anyhting else, neat.
Random random = GetRandom(seed, useSeed);
// Size up the situation.
int size = random.Next(min, max + 1);
GameItem[] lootBag = new GameItem[size];
// Generate and fill the bag.
for (int i = 0; i < size; i++)
{
if (random.NextDouble() <= healthPotionChance)
{
lootBag[i] = GenerateHealthPotion(seed, quality, rarity, useSeed);
}
else
{
lootBag[i] = GenerateItem(seed, quality, rarity, useSeed);
}
}
return(lootBag);
}
public void ItemValue(GameItem.ItemRarity rarity, double value)
{
GameItem valueTestItem = new GameItem(null, null, "Generic Item", "I am an Item.", 10, rarity, 5, 10, 2);
Assert.AreEqual(value, ItemSpawner.GenerateItemValue(valueTestItem));
}
public void TestArmorNameByRarity(EquipmentManager.EquipSlot slot, int armorRatingPosition, GameItem.ItemRarity rarity, string description)
{
ArmorItem armor = new ArmorItem(rarity, slot);
double[] minArmor = new double[6];
double[] maxArmor = new double[6];
minArmor[armorRatingPosition] = 1;
maxArmor[armorRatingPosition] = 5;
double[] minSpeed = new double[6];
double[] maxSpeed = new double[6];
minSpeed[armorRatingPosition] = 1;
maxSpeed[armorRatingPosition] = 5;
double[] minDamage = new double[6];
double[] maxDamage = new double[6];
minDamage[armorRatingPosition] = 1;
maxDamage[armorRatingPosition] = 5;
string name = ItemSpawner.GenerateArmorName(5, armor, minArmor, maxArmor, minSpeed, maxSpeed, minDamage, maxDamage);
string[] ssize = name.Split(null);
Assert.AreEqual(ssize[0], description);
}
