more playing with level design

levels/waterfall.gdshader

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+shader_type spatial;
+
+render_mode blend_mix, specular_toon, cull_disabled;
+
+uniform vec4 light_color;
+uniform vec4 dark_color;
+
+uniform sampler2D water_tex;
+uniform sampler2D noise_tex;
+uniform sampler2D normal_tex;
+
+uniform float displ_amount = 0.02;
+uniform float speed = 1.0;
+
+uniform vec2 strength = vec2(0.25, 0.5);
+uniform vec2 frequency = vec2(3.0, 2.5);
+uniform vec2 time_factor = vec2(5.0,4.0);
+
+float height(vec2 pos, float time){
+	return (strength.y * sin(pos.y * frequency.y + time * time_factor.y)) + (strength.x * sin(pos.x * frequency.x + time * time_factor.x)); 
+}
+
+void vertex(){
+	VERTEX.y += height(VERTEX.yz, TIME);
+}
+
+void fragment(){
+	
+	vec2 displ = texture(water_tex, UV - TIME * speed / 8.0).xy;
+	displ = (displ * 2.0 - 1.0) * displ_amount;
+	
+	float noise = texture(noise_tex, vec2(UV.x, UV.y / 4.0 - TIME * speed / 4.0) + displ).x;
+	noise = floor(noise * 4.0) / 4.0;
+	
+	vec4 col = mix(dark_color, light_color, noise);
+	
+	vec2 uv_movement = UV;
+	uv_movement -= vec2(0.0, 1.0) * TIME * speed;
+	
+	ALBEDO = col.rgb;
+	NORMAL = texture(normal_tex, uv_movement).rgb;
+	ROUGHNESS = 0.11;
+	ALPHA = texture(water_tex, uv_movement).a * 0.75;
+}