goalpost

assets/shaders/flag.gdshader

@@ -0,0 +1,36 @@
+shader_type spatial;
+render_mode vertex_lighting, specular_disabled, cull_disabled;
+
+uniform vec3 color_bright : source_color = vec3(1.0);
+uniform vec3 color_dark : source_color = vec3(0.0);
+uniform float pivot = 0.0;
+uniform float pivot_speed = 1.0;
+uniform float waves = 4.0;
+uniform float wave_speed = 1.0;
+uniform float wave_scale = 0.25;
+
+void vertex() {
+	float body = (VERTEX.x) / 2.0;
+
+	VERTEX.z = sin(VERTEX.x * waves + TIME * wave_speed) * wave_scale * body;
+
+	float pivot_angle = cos(TIME * pivot_speed) * 0.1 * pivot;
+	mat2 rotation_matrix = mat2(
+		vec2(cos(pivot_angle), -sin(pivot_angle)),
+		vec2(sin(pivot_angle), cos(pivot_angle))
+	);
+	VERTEX.xz = rotation_matrix * VERTEX.xz;
+
+	float color_weight = sin(VERTEX.x * waves + TIME * wave_speed);
+	COLOR = vec4(mix(color_dark, color_bright, color_weight), 1.0);
+	//VERTEX.z += cos(time + body) * wave;
+}
+
+void fragment() {
+	ALBEDO = COLOR.rgb;
+}
+
+//void light() {
+	// Called for every pixel for every light affecting the material.
+	// Uncomment to replace the default light processing function with this one.
+//}