Improves AirtightComponent.

- Atmos now nulls air in fully airblocked tiles ONLY if one of the airtight entities in it has NoAirWhenFullyAirBlocked to true.
- Fixes edge firelocks atmos airtight direction
- Fixes atmos debug overlay not accounting for angle 0 being south.

Resources/Changelog/Parts/edge_firelocks.yml

@@ -0,0 +1,4 @@
+author: Zumorica
+changes:
+  - type: Fix
+    message: Having four edge firelocks in a single tile no longer destroys any air within it.

Resources/Prototypes/Entities/Constructible/Doors/firelock.yml

@@ -53,6 +53,7 @@
       openTimeTwo: 0.6
       startOpen: true
       bumpOpen: false
+      inhibitCrush: false
     - type: Firelock
     - type: Appearance
       visuals:
@@ -88,6 +89,7 @@
   components:
     - type: Door
       occludes: false
+      inhibitCrush: false
     - type: Occluder
       enabled: false
     - type: Sprite
@@ -100,13 +102,14 @@
   components:
     - type: Door
       occludes: false
-      inhibitCrush: true
+      inhibitCrush: false
     - type: Sprite
       sprite: Constructible/Structures/Doors/edge_door_hazard.rsi
     - type: Airtight
       fixVacuum: true
+      noAirWhenFullyAirBlocked: false
       airBlockedDirection:
-        - East
+        - South
     - type: Physics
       fixtures:
       - shape:

Resources/Textures/Shaders/gradient_circle_mask.swsl

@@ -18,7 +18,7 @@ void fragment() {
     highp vec4 grad = vec4(0.8 - length( uv - center )/res_xy.y * gradientfalloffwidth);
 
     highp vec4 layer1 = vec4(vec3(255.0),0.0);
-    
+
     highp vec4 layer2 = circle(uv, center, radius, grad.rgb);
 
     COLOR = mix(layer1, layer2, layer2.a);