BaseOS

src/main.c

@@ -0,0 +1,70 @@
+#include "renderer.h"
+#include "color.h"
+#include "font_pack.h"
+#include "io.h"
+
+int kernel_main(void)
+{
+    uart_io.puts("Initializing renderer...\n");
+
+    Renderer renderer;
+    if (!renderer_init(&renderer))
+    {
+        uart_io.puts("Failed to allocate framebuffer.\n");
+        while (1)
+            ;
+    }
+
+    uart_io.puts("Framebuffer allocated.\n");
+    uart_io.puts("Width: ");
+    uart_io.print_int(renderer.width);
+    uart_io.puts("\nHeight: ");
+    uart_io.print_int(renderer.height);
+    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",
+        .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');
+    }
+}