Add indicator to show where the mouse is pointing

1 files changed, 31 insertions, 0 deletions

diff --git a/src/gui/position_indicator.rs b/src/gui/position_indicator.rs
new file mode 100644
index 0000000..b6d0dac
--- /dev/null
+++ b/src/gui/position_indicator.rs
@@ -0,0 +1,31 @@
+//! The position indicator shows the mouse position on the map
+//!
+//! The exact position the mouse is currently on is shown unless hidden by the user (TODO). This
+//! helps to place things exactly where they should be on the map and let the user know where they
+//! are looking and where relative to them other things should be easily at all times. Currently, this
+//! is a simple HUD so it doesn't interact with anything in the world, but that may change in the
+//! future.
+
+use crate::colours::DEFAULT_COLOURS;
+use crate::math::Vec2;
+use crate::transform::Transform;
+use raylib::drawing::{RaylibDraw, RaylibDrawHandle};
+
+/// Function to draw a dot at the mouse position and the coordinates associated with it.
+// TODO: Snap this, when the user wants to snap, don't if they don't want to.
+pub fn position_indicator_draw(
+    rld: &mut RaylibDrawHandle,
+    mouse_pos_px: Vec2<f64>,
+    transform: &Transform,
+) {
+    let mouse_pos_m = transform.point_px_to_m(&mouse_pos_px);
+
+    rld.draw_circle_v(mouse_pos_px, 2., DEFAULT_COLOURS.position_indicator);
+    rld.draw_text(
+        &format!("({:.3}m, {:.3}m)", mouse_pos_m.x, mouse_pos_m.y),
+        mouse_pos_px.x as i32 - 30,
+        mouse_pos_px.y as i32 - 30,
+        20,
+        DEFAULT_COLOURS.position_text,
+    );
+}