shader_type canvas_item;

uniform vec2[10] wave_centers;
uniform float[10] wave_distances;

uniform vec3 color : source_color;
uniform float max_distance;
uniform float bublic_size = 2.0;

varying vec2[10] local_position;

float smooth_bublic(vec2 center,vec2 pixel_pos,float distance_from_center,float size)
{
	return 1.0-distance(distance_from_center,distance(center,pixel_pos))/size;
}

float solid_bublic(vec2 center,vec2 pixel_pos,float distance_from_center,float size,float border)
{

	return step(border,smooth_bublic(center,pixel_pos,distance_from_center,size));;
}

void vertex()
{
	for (int i = 0; i < wave_centers.length(); i++)
	{
		local_position[i] = (inverse(MODEL_MATRIX) * vec4(wave_centers[i],0.0,1.0)).xy;
	}
}

void fragment() {
	// Set faction color
	COLOR = texture(TEXTURE,UV) * vec4(color,1.0);
	
	/*for (int i = 0; i < wave_centers.length(); i++)
	{
		float wave_distance = wave_distances[i];
		float normalized_distance = wave_distance/max_distance;
		
		if (normalized_distance >= 1.0 || normalized_distance < 0.0)
		{
			break;
		}
		float bublic = solid_bublic(local_position[i],(UV-0.5)/TEXTURE_PIXEL_SIZE,wave_distance,bublic_size,0.75);
		
		if (bublic == 0.0){
			break;
		}
		
		COLOR.rgb = mix(COLOR.rgb,vec3(bublic*color),1.0-normalized_distance);
		
	}*/
}