shader_type canvas_item;

uniform float amplitude : hint_range(0.0, 1.0);
uniform float rate : hint_range(0.0, 2000.0);

void fragment(){

	float offset_dir = step(sin(UV.y * rate), 0.2) * 2.0;
	float offset_dir2 = step(sin(UV.x * rate), 0.2) * 2.0;
	float offset_curve1 = step(sin(UV.y * rate), 0.05) * 2.0;
	//WAVES
	float final_offset = ((offset_dir - 1.0) * (amplitude/2.0));
	float final_offset2 = ((offset_dir2 - 1.0) * (amplitude/2.0));
	float final_curve1 = (sin(UV.y * rate)) * (amplitude/1.0);
	float final_curve2 = (sin(UV.x * rate)) * (amplitude/1.0);

	vec4 texture_color = texture(TEXTURE, vec2(UV.x + final_offset, UV.y + final_offset2 + final_curve2));
	vec4 color = texture_color;
	COLOR = color;

	//ALPHA
	COLOR.a = clamp(color.a - (amplitude/1.0), 0.0, 1.0);
}