From 25d0664f49eec5c9dadf33fe091500d61cf505e2 Mon Sep 17 00:00:00 2001
From: Nolan Darilek <nolan@thewordnerd.info>
Date: Wed, 11 Aug 2021 10:44:45 -0500
Subject: [PATCH] Visibility blocking takes an opacity.

---
 src/visibility.rs | 27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

diff --git a/src/visibility.rs b/src/visibility.rs
index 1af14f0..a0f36e5 100644
--- a/src/visibility.rs
+++ b/src/visibility.rs
@@ -12,10 +12,15 @@ use crate::{
     map::{ITileType, Map, MapConfig},
 };
 
-#[derive(Clone, Copy, Debug, Default, Reflect)]
+#[derive(Clone, Copy, Debug, Deref, DerefMut, Reflect)]
 #[reflect(Component)]
-pub struct BlocksVisibility;
+pub struct BlocksVisibility(pub u8);
 
+impl Default for BlocksVisibility {
+    fn default() -> Self {
+        Self(u8::MAX)
+    }
+}
 #[derive(Clone, Copy, Debug, Default, Reflect)]
 #[reflect(Component)]
 pub struct DontLogWhenVisible;
@@ -124,16 +129,20 @@ fn update_viewshed(
             InteractionGroups::all(),
             Some(&|v| v.entity() != *viewer_entity && blocks_visibility.get(v.entity()).is_ok()),
             |handle| {
-                if let Ok(coordinates) = coordinates.get(handle.entity()) {
-                    if coordinates.i32() == (coord.x, coord.y) {
-                        opacity = 255;
-                        false
+                if let Ok(blocks_visibility) = blocks_visibility.get(handle.entity()) {
+                    if let Ok(coordinates) = coordinates.get(handle.entity()) {
+                        if coordinates.i32() == (coord.x, coord.y) {
+                            opacity = **blocks_visibility;
+                            false
+                        } else {
+                            true
+                        }
                     } else {
-                        true
+                        opacity = **blocks_visibility;
+                        false
                     }
                 } else {
-                    opacity = 255;
-                    false
+                    true
                 }
             },
         );