Miscellaneous code cleanup

1 files changed, 17 insertions, 0 deletions

diff --git a/src/util.cpp b/src/util.cpp
new file mode 100644
index 0000000..3eaf143
--- /dev/null
+++ b/src/util.cpp
@@ -0,0 +1,17 @@
+#include "util.h"
+#include <cmath>
+
+Point2D ScreenToTile(Point2D source)
+{
+	Point2D result {};
+
+	auto fx = (float)source.x;
+	auto fy = (float)source.y;
+	float xx = (fx / TileSize + fy / (TileSize / 2.f));
+	float yy = (fy / (TileSize / 2.f) - (fx / TileSize));
+
+	result.x = (int)floorf(xx - 1.5f); // Magic numbers
+	result.y = (int)floorf(yy - 0.5f);
+
+	return result;
+}
\ No newline at end of file