build: support single file commands

1 files changed, 42 insertions, 0 deletions

diff --git a/src/cmd/dvd.c b/src/cmd/dvd.c
new file mode 100644
index 0000000..0b5caaf
--- /dev/null
+++ b/src/cmd/dvd.c
@@ -0,0 +1,42 @@
+#include <camellia/execbuf.h>
+#include <camellia/syscalls.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <draw.h>
+
+struct framebuf fb;
+struct rect dirty;
+
+void draw_rect(uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint32_t col) {
+	for (uint32_t i = 0; i < w; i++) {
+		for (uint32_t j = 0; j < h; j++) {
+			*((uint32_t*)(fb.b + fb.pitch * (y+j) + 4 * (x+i))) = col;
+		}
+	}
+	dirty_mark(&dirty, x, y);
+	dirty_mark(&dirty, x + w, y + h);
+}
+
+int main(void) {
+	if (fb_setup(&fb, "/dev/video/") < 0) {
+		err(1, "fb_setup");
+		return 1;
+	}
+	int dx = 2, dy = 2, x = 100, y = 100, w = 150, h = 70;
+	uint32_t col = 0x800000;
+
+	for (;;) {
+		if (x + dx < 0 || (size_t)(x + dx + w) >= fb.width)  dx *= -1;
+		if (y + dy < 0 || (size_t)(y + dy + h) >= fb.height) dy *= -1;
+		x += dx;
+		y += dy;
+		draw_rect(x, y, w, h, col++);
+		dirty_flush(&dirty, &fb);
+		_sys_sleep(1000 / 60);
+	}
+
+	return 1;
+}