restrcuct

src/main.c

@@ -2,9 +2,30 @@
 #include "color.h"
 #include "font_pack.h"
 #include "io.h"
+#include "String.h"
+
+static void delay_1s(void)
+{
+    volatile unsigned long count = 80000000; // Example for ~1 sec at ~80 MHz CPU
+    while (count--)
+    {
+        __asm__ volatile("nop");
+    }
+}
+
+void delay_seconds(unsigned int seconds)
+{
+    for (unsigned int i = 0; i < seconds; i++)
+    {
+        delay_1s();
+    }
+}
 
 int kernel_main(void)
 {
+    String str;
+    cs_init(&str);
+    cs_set(&str, "HELLO MARIO");
     uart_io.puts("Initializing renderer...\n");
 
     Renderer renderer;
@@ -23,48 +44,38 @@ int kernel_main(void)
     uart_io.putc('\n');
 
     RenderObject background = {0, 0, renderer.width, renderer.height, COLOR_RED};
-    RenderObject blue_rect = {100, 100, 100, 100, COLOR_BLUE};
-
     RenderText text = {
         .base = {
             .x = 20,
             .y = 30,
             .color = 0xFFFFFFFF},
-        .text = "HELLO MARIO",
+        .text = str.buffer,
         .font = &basic_font_pack,
     };
-    uart_io.puts("Use WASD keys to move the rectangle.\n");
-
-    // Initial draw
-    renderer.clear_screen(&renderer, background.color);
-    renderer.draw_rect(&renderer, &blue_rect);
-    renderer.draw_text(&renderer, &text);
 
     while (1)
     {
-        char c = uart_io.getc();
-        uart_io.putc(c); 
-
-        // Movement
-        if ((c == 'w' || c == 'W') && blue_rect.y > 0)
-            blue_rect.y = (blue_rect.y > 10) ? blue_rect.y - 10 : 0;
-        if ((c == 's' || c == 'S') && (blue_rect.y + blue_rect.height) < renderer.height)
-            blue_rect.y += 10;
-        if ((c == 'a' || c == 'A') && blue_rect.x > 0)
-            blue_rect.x = (blue_rect.x > 10) ? blue_rect.x - 10 : 0;
-        if ((c == 'd' || c == 'D') && (blue_rect.x + blue_rect.width) < renderer.width)
-            blue_rect.x += 10;
-
-        // Redraw everything
         renderer.clear_screen(&renderer, background.color);
-        renderer.draw_rect(&renderer, &blue_rect);
         renderer.draw_text(&renderer, &text);
 
-        // Print updated position
-        uart_io.puts("\nRect X: ");
-        uart_io.print_int(blue_rect.x);
-        uart_io.puts(" Y: ");
-        uart_io.print_int(blue_rect.y);
-        uart_io.putc('\n');
+        char c = uart_getc();
+
+        if (c >= 32 && c <= 126) // Printable ASCII
+        {
+            cs_append_char(&str, c);
+        }
+        else if (c == '\b' || c == 127) // Backspace support
+        {
+            if (str.length > 0)
+            {
+                str.length--;
+                str.buffer[str.length] = '\0';
+            }
+        }
+
+        uart_puts(str.buffer);
+        renderer.draw_text(&renderer, &text);
+
+        delay_seconds(4);
     }
 }