Post Game jam commit

shaders/fog.gdshader

@@ -0,0 +1,33 @@
+shader_type canvas_item;
+
+uniform vec2 center = vec2(0.5, 0.5);
+uniform float radius : hint_range(0.0, 1.0) = 0.3;
+uniform float softness : hint_range(0.0, 1.0) = 0.1;
+
+// Use 'repeat_enable' to ensure the noise tiles seamlessly
+uniform sampler2D noise_texture : repeat_enable, filter_nearest;
+uniform float noise_strength : hint_range(0.0, 1.0) = 0.1;
+uniform float noise_scale = 4.0; // New: Controls how "dense" the fog clouds are
+
+void fragment() {
+    vec2 uv = UV;
+
+    // 1. Scale the UVs for the noise lookup.
+    // Higher scale = more frequent/smaller clouds.
+    vec2 noise_uv = (uv * noise_scale) + vec2(TIME * 0.05);
+
+    // 2. Center the noise!
+    // Texture returns 0.0 to 1.0. Subtracting 0.5 makes it -0.5 to 0.5.
+    // This allows the fog to distort BOTH inward and outward.
+    float noise = texture(noise_texture, noise_uv).r - 0.5;
+
+    float dist = distance(uv, center);
+
+    // 3. Apply the centered noise to the threshold
+    float fog_threshold = radius + (noise * noise_strength);
+
+    // 4. Smoothstep for the alpha transition
+    float alpha = smoothstep(fog_threshold - softness, fog_threshold, dist);
+
+    COLOR.a *= alpha;
+}