# Resources drop #### For each killed enemy piece, the Player receives Energy, Basic materials, Gems and random ammunition. #### Resource drop probabilities are as follows: * **Energy** - always drops out. The amount of Energy received depends on the [Class](https://shedever-studio.gitbook.io/chess-zombies-wpeng/chess-pieces) and [Figure power](https://shedever-studio.gitbook.io/chess-zombies-wpeng/gameplay/rpg/piece-power).\ \ **The total amount of received Energy is calculated by the formulas:**\ \ **Pawns:** E = Fp/5\*Ir1\*Ir2\*CCl\ **Knights, Bishops, Rooks:** E = Fp/3\*Ir1\*Ir2\*CCl\ **Queens:** E = Fp/2\*Ir1\*Ir2\*CCl\ **Kings:** E = Fp\*Ir1\*Ir2\*CCl\ \ Where:\ **E** - the amount of Energy that a player receives for killing a piece.\ **Fp** - maximum power of the killed piece.\ **Ir1** - the player's base inflation rate. Always applied. Default = 1. Decreases based on how much Energy the player removes from the game.\ **Ir2** - the player's progressive inflation rate. Default = 1. Adjusts the total amount of Energy in the Game. Applicable under certain conditions.\ **CCl** - the coefficient of the class of figures. For F2P figures CCl=1, for SFT CCl=1.2, for NFT CCl=1.3\ \ **If the player does not remove Energy from the game at all, Ir1 and Ir2 will be equal to 1.**\ * **Basic materials** - 5 pcs. one of the types of building materials always drop out. The probabilities of dropping one or another type of building materials are the same (33.33(3)%). * **Gems** - 1 pc. one of the types of gems always drops out. The probabilities of dropping one or another type of gems are the same (25%). #### The rarity of the dropped gem depends on the level of the piece that killed the enemy piece.

Figure level	Small Gem	Medium Gem	Big Gem	Unique Gem	Legendary Gem
1-3	100%	-	-	-	-
4-6	80%	20%	-	-	-
7-9	65%	20%	15%	-
10-12	55%	20%	15%	10%	-
13-15	50%	20%	15%	10%	5%

#### Algorithm for determining the probability of Resource Drop. #### Stage 1: determination of the amount of dropped Energy. We look at the Class and Strength of the killed figure and calculate the amount of Energy according to the formula. #### Stage 2: determining the type of drop-down Basic Materials. * We randomly select 1 of 3 types of Building Materials. * Quantity - 5 pcs. #### Stage 3: determining the type and rarity of the drop-down Gem. * Randomly choose 1 of 4 types of Gems. * Based on the level of the figure that killed the enemy figure, we determine the rarity of the Gem. * Quantity - 1 pc.