Beginning input refactor

src/display/ui/ui.h

@@ -9,9 +9,31 @@
 #include "error/error.h"
 #include "display/camera.h"
 
-extern camera_t UI_CAMERA;
+typedef struct {
+  camera_t camera;
+  float_t scale;
+} ui_t;
 
+extern ui_t UI;
+
+/**
+ * Initializes the UI system.
+ * 
+ * @return An errorret_t indicating success or failure.
+ */
 errorret_t uiInit(void);
+
+/**
+ * Updates the UI system. Will not render anything.
+ */
 void uiUpdate(void);
+
+/**
+ * Renders the UI system.
+ */
 void uiRender(void);
+
+/**
+ * Disposes of the UI system.
+ */
 void uiDispose(void);