From 9fa9b616fd4474c7483b63f7a37761d1bdc405a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Linnea=20Gr=C3=A4f?= <nea@nea.moe>
Date: Tue, 16 Jul 2024 23:57:03 +0200
Subject: [PATCH] Add scrolling

---
 .../exhq/ajarc/computer/ComputerScreen.java    | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/main/java/dev/exhq/ajarc/computer/ComputerScreen.java b/src/main/java/dev/exhq/ajarc/computer/ComputerScreen.java
index b910b28..1ccb100 100644
--- a/src/main/java/dev/exhq/ajarc/computer/ComputerScreen.java
+++ b/src/main/java/dev/exhq/ajarc/computer/ComputerScreen.java
@@ -9,6 +9,7 @@ import net.minecraft.world.entity.player.Inventory;
 import net.neoforged.neoforge.network.PacketDistributor;
 import org.jetbrains.annotations.NotNull;
 import org.lwjgl.glfw.GLFW;
+import org.lwjgl.system.MathUtil;
 
 public class ComputerScreen extends AbstractContainerScreen<ComputerMenu> {
 	public ComputerScreen(ComputerMenu pMenu, Inventory pPlayerInventory, Component pTitle) {
@@ -16,6 +17,7 @@ public class ComputerScreen extends AbstractContainerScreen<ComputerMenu> {
 	}
 
 	String editingLine = "";
+	int scroll = 0;
 
 	public void reinitDimensions() {
 		init();
@@ -43,6 +45,7 @@ public class ComputerScreen extends AbstractContainerScreen<ComputerMenu> {
 
 	@Override
 	public boolean keyPressed(int pKeyCode, int pScanCode, int pModifiers) {
+		scroll = 0;
 		InputConstants.Key mouseKey = InputConstants.getKey(pKeyCode, pScanCode);
 		assert this.minecraft != null;
 		if (!this.minecraft.options.keyInventory.isActiveAndMatches(mouseKey) && super.keyPressed(pKeyCode, pScanCode, pModifiers))
@@ -59,12 +62,25 @@ public class ComputerScreen extends AbstractContainerScreen<ComputerMenu> {
 		return false;
 	}
 
+	@Override
+	public boolean mouseScrolled(double pMouseX, double pMouseY, double pScrollX, double pScrollY) {
+		if (pScrollY < 0) {
+			scroll--;
+			return true;
+		} else if (pScrollY > 0) {
+			scroll++;
+			return true;
+		}
+		return super.mouseScrolled(pMouseX, pMouseY, pScrollX, pScrollY);
+	}
+
 	@Override
 	protected void renderLabels(@NotNull GuiGraphics graphics, int pMouseX, int pMouseY) {
 		int offsetY = 0;
 		var lines = menu.getLines();
 		//var renderedlines = lines.subList(lines.size() - menu.getRows(), lines.size());
-		for (int i = Math.max(0, lines.size() - menu.getRows() + 1); i < lines.size(); i++) {
+		scroll = Math.max(Math.min(scroll, lines.size() - 1), 0);
+		for (int i = Math.max(0, lines.size() - menu.getRows() + 1 - scroll); i < lines.size() - scroll; i++) {
 			graphics.drawString(font, lines.get(i), 0, offsetY, 0xFFFFFFFF);
 			offsetY += 11;
 		}