colors on the health bar

rpruizc · Sep 14, 2020 · 49c6403 · 49c6403
1 parent fbff011
commit 49c6403
Showing 1 changed file with 36 additions and 3 deletions.
diff --git a/src/ui.rs b/src/ui.rs
@@ -1,11 +1,17 @@
 use crate::world::HitPoints;
 
 use chargrid::{
-    render::{ColModify, Frame, Style, View, ViewContext},
+    decorator::{AlignView, Alignment, BoundView},
+    render::{ColModify, Frame, Style, View, ViewCell, ViewContext},
     text::StringViewSingleLine,
 };
+use coord_2d::{Coord, Size};
 use rgb24::Rgb24;
 
+const HEALTH_WIDTH: u32 = 10;
+const HEALTH_FILL_COLOUR: Rgb24 = Rgb24::new(200, 0, 0);
+const HEALTH_EMPTY_COLOUR: Rgb24 = Rgb24::new(100, 0, 0);
+
 pub struct UiData {
     pub player_hit_points: HitPoints,
 }
@@ -29,7 +35,34 @@ impl View<UiData> for UiView {
             "{}/{}",
             data.player_hit_points.current, data.player_hit_points.max
         ).unwrap();
-        StringViewSingleLine::new(Style::new().with_foreground(Rgb24::new_grey(255)))
-            .view(&self.buf, context, frame);
+        let mut hit_points_text_view = BoundView {
+            size: Size::new(HEALTH_WIDTH, 1),
+            view: AlignView {
+                alignment: Alignment::centre(),
+                view: StringViewSingleLine::new(Style::new().with_foreground(Rgb24::new_grey(255))),
+            },
+        };
+        hit_points_text_view.view(&self.buf, context.add_depth(1), frame);
+        let mut health_fill_width =
+            (data.player_hit_points.current * HEALTH_WIDTH) / data.player_hit_points.max;
+        if data.player_hit_points.current > 0 {
+            health_fill_width = health_fill_width.max(1);
+        }
+        for i in 0..health_fill_width {
+            frame.set_cell_relative(
+                Coord::new(i as i32, 0),
+                0,
+                ViewCell::new().with_background(HEALTH_FILL_COLOUR),
+                context,
+            );
+        }
+        for i in health_fill_width..HEALTH_WIDTH {
+            frame.set_cell_relative(
+                Coord::new(i as i32, 0),
+                0,
+                ViewCell::new().with_background(HEALTH_EMPTY_COLOUR),
+                context,
+            );
+        }
     }
 }