Added hit indicator shader

game/shaders/hit_indicator.gdshader

@@ -0,0 +1,8 @@
+shader_type canvas_item;
+
+uniform vec3 damage_color : source_color = vec3(1.0);
+uniform float intensity : hint_range(0.0, 1.0) = 0.0;
+
+void fragment() {
+	COLOR.rgb = mix(COLOR.rgb, damage_color.rgb, intensity);
+}

game/shaders/hit_indicator.gdshader.uid

@@ -0,0 +1 @@
+uid://bywlejhmgj55q