1 files changed, 57 insertions, 0 deletions
diff --git a/source/main.cpp b/source/main.cpp
new file mode 100644
index 0000000..ec6be22
--- /dev/null
+++ b/source/main.cpp
@@ -0,0 +1,57 @@
+#include "types.hpp"
+#include "util.hpp"
+#include "input.hpp"
+
+ScreenEntry *bg0_map = screenblock_mem[28];
+
+void bad_vsync() {
+	while (*REG_VCOUNT >= 160);
+	while (*REG_VCOUNT < 160);
+}
+
+int main() {
+	auto bg_flags = BGControlFlags()
+		.set_charblock_base(0)
+		.set_screenblock_base(0)
+		.set_size(BGControlSize::Regular_64x64);
+
+	set_bg_control(0, bg_flags);
+	set_bg_offsets(0, 0, 0);
+
+	const Tile4 tiles[2] = {
+		{{0x11111111, 0x01111111, 0x01111111, 0x01111111, 0x01111111, 0x01111111, 0x01111111, 0x00000001}},
+		{{0x00000000, 0x00100100, 0x01100110, 0x00011000, 0x00011000, 0x01100110, 0x00100100, 0x00000000}},
+	};
+
+	set_tile(0, 0, tiles[0]);
+	set_tile(0, 1, tiles[1]);
+
+	set_bg_palette(0, 1, Color::from_rgb(31,  0,  0));
+	set_bg_palette(1, 1, Color::from_rgb(31,  0,  0));
+	set_bg_palette(2, 1, Color::from_rgb(31,  0,  0));
+	set_bg_palette(3, 1, Color::from_rgb(31,  0,  0));
+
+	ScreenEntry *screen_entry_ptr = bg0_map;
+	for (int i = 0; i < 4; i++) {
+		for (int j = 0; j < 32*32; j++) {
+			*screen_entry_ptr++ = ScreenEntry().set_palette_bank(i);
+		}
+	}
+
+	set_display_control(Mode0, BG0);
+
+	s16 x = 0, y = 0;
+	while (1) {
+		bad_vsync();
+		keyflags_poll();
+
+		if (key_is_down(Key::Left))  x -= 1;
+		if (key_is_down(Key::Right)) x += 1;
+		if (key_is_down(Key::Up))    y -= 1;
+		if (key_is_down(Key::Down))  y += 1;
+
+		set_bg_offsets(0, x, y);
+	}
+
+	return 0;
+}