Open-sourced some code

2019-03-08 09:54:14 +11:00
commit 645272872c
142 changed files with 3028 additions and 0 deletions
@@ -0,0 +1,144 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace MenuSystem {
+	public class MenuCanvas : MonoBehaviour {
+		//public access members
+		public Image cursorImage;
+		public bool floating = false;
+
+		//private members
+		MenuOption[] menuOptions = null;
+
+		//fine-tuned input
+		const float deadZone = 0.25f;
+		const float inputDelay = 0.5f;
+		const float scrollDelay = 0.1f;
+		float lastInputX = float.NegativeInfinity;
+		float lastInputY = float.NegativeInfinity;
+
+		void OnEnable() {
+			menuOptions = GetComponentsInChildren<MenuOption>();
+
+			//set up the cursor
+			menuOptions[0].hover = true;
+			RectTransform rt = cursorImage.GetComponent<RectTransform>();
+			rt.SetParent(menuOptions[0].transform);
+			rt.offsetMin = new Vector2(0, 0);
+			rt.offsetMax = new Vector2(0, 0);
+
+			HandleGraphics();
+		}
+
+		void OnDisable() {
+			//BUGFIX: reset this menu tree if closing the menu
+			foreach (Transform child in transform) {
+				child.gameObject.SetActive(true);
+			}
+		}
+
+		void Update() {
+			//BUGFIX: remove all non-active elements
+			 menuOptions = Array.FindAll(menuOptions, (MenuOption option) => option.gameObject.active);
+
+			HandleInput();
+			HandleGraphics();
+		}
+
+		void HandleInput() {
+			//press a button
+			if (GamePad.GetState().Pressed(CButton.A)) {
+				foreach(MenuOption option in menuOptions) {
+					if (option.hover) {
+						option.Execute();
+					}
+				}
+				return;
+			}
+
+			//scroll left or right
+			if (Mathf.Abs(GamePad.GetAxis(CAxis.LX)) >= deadZone && Time.unscaledTime - lastInputX > scrollDelay) {
+				lastInputX = Time.unscaledTime;
+
+				foreach(MenuOption option in menuOptions) {
+					if (option.hover) {
+						option.Scroll(GamePad.GetAxis(CAxis.LX));
+					}
+				}
+				return;
+			}
+
+			//keyboard/gamepad scroll up
+			if (GamePad.GetAxis(CAxis.LY) < -deadZone && Time.unscaledTime - lastInputY > inputDelay) {
+				lastInputY = Time.unscaledTime;
+
+				//move the cursor one up
+				for (int i = 1; i < menuOptions.Length; i++) {
+					//find the current hovered item
+					if (menuOptions[i].hover) {
+						//move the hover up
+						menuOptions[i].hover = false;
+						menuOptions[i-1].hover = true;
+						break;
+					}
+				}
+			}
+
+			//keyboard/gamepad scroll down
+			if (GamePad.GetAxis(CAxis.LY) > deadZone && Time.unscaledTime - lastInputY > inputDelay) {
+				lastInputY = Time.unscaledTime;
+
+				//move the cursor one down
+				for (int i = 0; i < menuOptions.Length - 1; i++) {
+					//find the current hovered item
+					if (menuOptions[i].hover) {
+						//move the hover down
+						menuOptions[i].hover = false;
+						menuOptions[i+1].hover = true;
+						break;
+					}
+				}
+			}
+
+			//deadzone reset lastInputX
+			if (Mathf.Abs(GamePad.GetAxis(CAxis.LX)) < deadZone) {
+				lastInputX = float.NegativeInfinity;
+			}
+
+			//deadzone reset lastInputY
+			if (Mathf.Abs(GamePad.GetAxis(CAxis.LY)) < deadZone) {
+				lastInputY = float.NegativeInfinity;
+			}
+		}
+
+		void HandleGraphics() {
+			bool hoverSet = false;
+
+			//update the graphics
+			foreach(MenuOption option in menuOptions) {
+				if (option.hover) {
+					if (hoverSet) {
+						option.hover = false;
+						continue;
+					}
+
+					RectTransform rt = cursorImage.GetComponent<RectTransform>();
+					rt.SetParent(option.transform);
+					rt.anchorMin = new Vector2(0, 0);
+					rt.anchorMax = new Vector2(1, 1);
+					rt.offsetMin = new Vector2(0, 0);
+					rt.offsetMax = new Vector2(0, 0);
+					hoverSet = true;
+				}
+			}
+
+			if (floating) {
+				float offset = cursorImage.transform.position.y - Screen.height / 2;
+				transform.position = new Vector2(transform.position.x, transform.position.y - offset);
+			}
+		}
+	}
+}