From 76cea79a46d42f8f59503d3bb421f0d298da66cb Mon Sep 17 00:00:00 2001
From: Melodi <62381002+Melodi17@users.noreply.github.com>
Date: Thu, 28 Aug 2025 21:57:33 +1000
Subject: implemented standard library

---
 ROMs/typewriter.c | 84 +++++++++++++++++--------------------------------------
 1 file changed, 25 insertions(+), 59 deletions(-)

(limited to 'ROMs/typewriter.c')

diff --git a/ROMs/typewriter.c b/ROMs/typewriter.c
index 0886532..a63a77d 100644
--- a/ROMs/typewriter.c
+++ b/ROMs/typewriter.c
@@ -1,4 +1,5 @@
 #load "font.bin"
+#include "lib.c"
 
 int drawChar(int ch, int x, int y, int color)
 {
@@ -19,33 +20,6 @@ int drawChar(int ch, int x, int y, int color)
     }
 }
 
-int setPixel(int x, int y, int c)
-{
-    char* screenStart = 0x402F;
-    int i = (y * 128) + x;
-    screenStart[i] = c;
-}
-
-int clear(int c)
-{
-    char* screenStart = 0x402F;
-    char screenSize = 64 * 128;
-    for (int i = 0; i < screenSize; i++)
-    {
-        screenStart[i] = c;
-    }
-}
-
-int getKeyState(int scanCode)
-{
-    char* hid = 0x6033;
-    int index = scanCode / 8;
-    int bit   = scanCode % 8;
-
-    int val = hid[index - 1];
-    return (val & (1 << bit)) != 0;
-}
-
 int print(int* text, int len, int x, int y, int color)
 {
     for (int i = 0; i < len; i++)
@@ -59,49 +33,41 @@ int main()
 {
     int x = 0;
     int y = 0;
-    while (1)
+    while (true)
     {
-        for (int sk = 0; sk < 256; sk++)
-        {
-            if (getKeyState(sk))
-            {
-                while (getKeyState(sk)) { }
-                // Newline pressed
-                if (sk == 13)
-                {
-                    y += 8;
-                    x = 0;
-                    continue;
-                }
-                // Backspace pressed
-                if (sk == 8)
-                {
-                    x -= 8;
-                    if (x < 0)
-                        x = 0;
-                    int* text = " ";
-                    print(text, 1, x, y, 1);
-                    continue;
-                }
-                
-                int* text = new int[] { sk };
-                print(text, 1, x, y, 1);
-                x += 8;
-            }
-        }
-
-        if (x >= 128)
+        if (x >= SCREEN_WIDTH)
         {
             x = 0;
             y += 8;
         }
 
-        if (y >= 64)
+        if (y >= SCREEN_HEIGHT)
         {
             x = 0;
             y = 0;
             clear(8);
         }
+
+        int sk = readKey();
+        while (getKeyState(sk)) { }
+
+        if (sk == SK_NL)
+        {
+            y += 8;
+            x = 0;
+            continue;
+        }
+
+        if (sk == SK_BS)
+        {
+            x -= 8;
+            if (x < 0)
+                x = 0;
+            drawChar(' ', x, y, 1);
+            continue;
+        }
         
+        drawChar(sk, x, y, 1);
+        x += 8;
     }
 }
\ No newline at end of file
-- 
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