EMotional/Data/Objects/Glowdot.tscn

[gd_scene load_steps=5 format=2]

[ext_resource path="res://Data/Graphics/placeholder.png" type="Texture" id=1]
[ext_resource path="res://Data/Scripts/Glowdot.gd" type="Script" id=2]

[sub_resource type="Shader" id=2]
code = "shader_type canvas_item;

uniform vec4 primary_color:hint_color = vec4(1.0, 0.8, 0.0, 1.0);
uniform float fade_offset:hint_range(0.0, 0.5) = 0.1;

float ramp(float v, float f_min, float f_max){
	float res = (v - f_min) / (f_max - f_min);
	return max(0.0, min(res, 1.0));
}

void fragment(){
	float mask = length(vec2(0.5, 0.5) - (UV.xy));
	float fade = 1.0 - ramp(mask, fade_offset, 0.5);
	if (mask > 0.5){
		mask = 0.0;
	} else {mask = 1.0;}
	
	if (mask == 1.0){
		COLOR = vec4(primary_color.rgb, fade);	
	} else {
		COLOR = vec4(primary_color.rgb, mask);
	}
}"

[sub_resource type="ShaderMaterial" id=1]
resource_local_to_scene = true
shader = SubResource( 2 )
shader_param/primary_color = Color( 0, 0, 0, 1 )
shader_param/fade_offset = 0.14

[node name="Glowdot" type="Sprite"]
material = SubResource( 1 )
texture = ExtResource( 1 )
script = ExtResource( 2 )
pulse_offset = 0.1

[node name="Pulse" type="Tween" parent="."]

[node name="PulseIn" type="Timer" parent="."]

[node name="PulseOut" type="Timer" parent="."]
[connection signal="timeout" from="PulseIn" to="." method="_on_PulseIn_timeout"]
[connection signal="timeout" from="PulseOut" to="." method="_on_PulseOut_timeout"]