New items system.

- Items class hierarchy.
- Inventory class.
- CharacterStats class.
- Applies modifiers to character's stats.

MrBigsock/Assets/Code/Item/EventParams/ICharEventParms.cs

+using System.Collections;
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+
+namespace BigSock {
+
+	/*
+		Interface that represents the parameters of a generic character event.
+	*/
+	public interface ICharEventParams {
+		/*
+			The character that own's the event.
+		*/
+		Character Source { get; }
+
+		/*
+			The character that triggered the event. (If any)
+			ex.: OnKill -> the killed enemy. OnDamage -> Enemy that dealt the damage.
+		*/
+		Character Target { get; }
+
+
+	}
+}
\ No newline at end of file

MrBigsock/Assets/Code/Item/EventParams/ICharEventParms.cs.meta

+fileFormatVersion: 2
+guid: f392d99fa5161e04791a522b7becc933
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

MrBigsock/Assets/Code/Item/Inventory.cs

+using System.Collections;
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+
+namespace BigSock.Item {
+
+	/*
+		An inventory of a character.
+	*/
+	public class Inventory {
+		/*
+			The items in the inventory.
+		*/
+		public List<IItem> Items { get; protected set; } = new List<IItem>();
+
+		/*
+			The modifier from all the passives.
+		*/
+		public ICharacterStats Modifier { get; protected set; } = new CharacterStats();
+
+
+		/*
+			The max number of items the inventory can hold.
+		*/
+		public int Cap { get; set; } = 3;
+
+
+		/*
+			Adds an item to the inventory and manages changes.
+		*/
+		public bool AddItem(IItem item) {
+			if(Items.Count >= Cap) return false;
+			
+			Items.Add(item);
+
+			// Add the passive effects to the modifier.
+			if(item is PassiveItemBase passive) {
+				Modifier = Modifier.Add(passive.Modifier);
+			}
+			//! Add ifs to handle the other 2 types of items.
+
+			return true;
+		}
+
+	}
+}
\ No newline at end of file

MrBigsock/Assets/Code/Item/Inventory.cs.meta

+fileFormatVersion: 2
+guid: 91c4ea7605d846e4a8ea5208d2217072
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

MrBigsock/Assets/Code/Item/Items.meta

+fileFormatVersion: 2
+guid: dbcc22c9f61379c4e9676afbe7eb8feb
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

MrBigsock/Assets/Code/Item/Items/RunningShoes.cs

+using System.Collections;
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+
+namespace BigSock.Item {
+
+	/*
+		A passive item that increases user's running speed by 50%.
+	*/
+	public class RunningShoes : PassiveItemBase {
+		public RunningShoes() {
+			Id = 101;
+			Name = "Running Shoes";
+			Description = "Increases movement speed by 50%";
+			Modifier = new CharacterStats{
+				MoveSpeed = 0.5f,
+			};
+		}
+
+	}
+}
\ No newline at end of file

MrBigsock/Assets/Code/Item/Items/RunningShoes.cs.meta

+fileFormatVersion: 2
+guid: 12406fa4fcf374142ad545946396cbde
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

MrBigsock/Assets/Code/Item/Root.meta

+fileFormatVersion: 2
+guid: fad9ca94bd85fe14da5644defaaf3820
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

MrBigsock/Assets/Code/PlayerController.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.InputSystem;
 using BigSock.UI;
+using BigSock.Item;
 
 
 namespace BigSock {
@@ -36,9 +37,9 @@ namespace BigSock {
 
 
 			// Start is called before the first frame update 
-			void Start()
+			protected override void Start()
 			{
-					rb = GetComponent<Rigidbody2D>();
+				base.Start();
 				animator = GetComponent<Animator>();
 				spriteRenderer = GetComponent<SpriteRenderer>();
 				hpBar.SetMaxHealth(Convert.ToInt32(MaxHP));
@@ -102,6 +103,11 @@ namespace BigSock {
 
 					
 				}
+
+				//!! Code for testing the new item stuff.
+				if(Input.GetKeyDown(KeyCode.Space)) {
+					TryPickUpItem(new RunningShoes());
+				}
 			}
 
 

MrBigsock/Assets/Code/orc/EnemyController.cs

@@ -28,8 +28,8 @@ namespace BigSock {
 
 		// private Collider2D_Proxy secondCollider;
 		
-		protected virtual void Start(){
-			rb = GetComponent<Rigidbody2D>();
+		protected override void Start() {
+			base.Start();
 
 			m_Animator = gameObject.GetComponent<Animator>();