From 866869a3921266055ff14ecca557f95ddb1c482b Mon Sep 17 00:00:00 2001
From: Kyle Loveless <kjloveless321@gmail.com>
Date: Mon, 11 Nov 2024 13:59:02 -0600
Subject: [PATCH] bound cursor to screen

---
 main.ts | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/main.ts b/main.ts
index cc20166..50dc75d 100644
--- a/main.ts
+++ b/main.ts
@@ -170,19 +170,26 @@ function editorRefreshScreen() {
 }
 
 function editorMoveCursor(key: string | number) {
-  console.log(key);
   switch (key) {
     case EditorKey.ARROW_LEFT:
-      e.cursorX--;
+      if (e.cursorX != 0) {
+        e.cursorX--;
+      }
       break;
     case EditorKey.ARROW_RIGHT:
-      e.cursorX++;
-      break
+      if (e.cursorX != e.screenCols - 1) {
+        e.cursorX++;
+      }
+      break;
     case EditorKey.ARROW_UP:
-      e.cursorY--;
+      if (e.cursorY != 0) {
+        e.cursorY--;
+      }
       break;
     case EditorKey.ARROW_DOWN:
-      e.cursorY++;
+      if (e.cursorY != e.screenRows - 1) {
+        e.cursorY++;
+      }
       break;
   }
 }