des indices d'intéractions à base de shaders et de bulles

caracters/bob/bob.gdshader

@@ -0,0 +1,27 @@
+shader_type canvas_item;
+
+uniform vec4 line_color : source_color = vec4(1);
+uniform float line_thickness : hint_range(0, 10) = 1.0;
+
+const vec2 OFFSETS[8] = {
+	vec2(-1, -1), vec2(-1, 0), vec2(-1, 1), vec2(0, -1), vec2(0, 1), 
+	vec2(1, -1), vec2(1, 0), vec2(1, 1)
+};
+
+void fragment() {
+	vec2 size = TEXTURE_PIXEL_SIZE * line_thickness / 2.0;
+	vec4 color = texture(TEXTURE, UV);
+	
+	float inline = 1.0;
+	float outline = 0.0;
+	for (int i = 0; i < OFFSETS.length(); i++) {
+		float sample = texture(TEXTURE, UV + size * OFFSETS[i]).a;
+		outline += sample;
+		inline *= sample;
+	}
+	outline = min(1.0, outline) - color.a;
+	inline = (1.0 - inline) * color.a;
+	
+	vec4 outlined_result = mix(color, line_color, outline + inline);
+	COLOR = mix(color, outlined_result, outlined_result.a);
+}