shader_type spatial;

render_mode cull_back, blend_mix;

uniform vec4 albedo_color: source_color;
uniform float fill: hint_range(0.0, 1.0, 0.01) = 0.;
uniform float wave_intensity: hint_range(0.0, 1.0, 0.01) = 0.;
uniform bool remap_for_mesh;

const float MAX_AMPLITUDE = 0.1;
const float MAX_SPEED = 2.;

void vertex() {
	if (VERTEX.y > 0.) {
		if (remap_for_mesh) {
			VERTEX.y *= fill;
		}
		else {
			VERTEX.y *= (fill - 0.5) * 2.;
		}
		VERTEX.y += sin((TIME+VERTEX.x+VERTEX.z)*wave_intensity*MAX_SPEED) * MAX_AMPLITUDE * wave_intensity;
	}
}

void fragment() {
	// Called for every pixel the material is visible on.
	ALBEDO = albedo_color.rgb;
	ALPHA = albedo_color.a;
}

//void light() {
//	// Called for every pixel for every light affecting the material.
//	// Uncomment to replace the default light processing function with this one.
//}