switch minimap background UI

1 files changed, 18 insertions, 0 deletions

diff --git a/game/src/Game/GameSession/Menubar/Minimap.gdshader b/game/src/Game/GameSession/Menubar/Minimap.gdshader
new file mode 100644
index 0000000..271b809
--- /dev/null
+++ b/game/src/Game/GameSession/Menubar/Minimap.gdshader
@@ -0,0 +1,18 @@
+shader_type canvas_item;
+
+#include "res://src/Game/GameSession/ProvinceIndexSampler.gdshaderinc"
+
+// Index of the currently selected province
+uniform uint selected_index;
+
+const vec3 land_colour = vec3(0.5);
+const vec3 selected_colour = vec3(1.0, 1.0, 0.0);
+
+void fragment() {
+	uvec3 data = read_uvec3(UV);
+	uint index = uvec2_to_uint(data.rg);
+	float is_land = float(data.b != 0u);
+	float is_selected = float(index == selected_index);
+	COLOR.rgb = mix(COLOR.rgb, land_colour, is_land);
+	COLOR.rgb = mix(COLOR.rgb, selected_colour, is_selected);
+}