Smoke effect and animations revamp

shaders/firewall.gdshader

@@ -0,0 +1,21 @@
+shader_type spatial;
+
+render_mode unshaded, cull_disabled,depth_prepass_alpha;
+
+uniform sampler2D noise_texture: repeat_enable;
+uniform sampler2D fire_gradient;
+uniform float height: hint_range(0.0, 1.0, 0.01);
+
+void fragment() {
+	float noise = texture(noise_texture,UV + vec2(0,fract(TIME/5.0))).x;
+	
+	ALBEDO = texture(fire_gradient,vec2(UV.y+noise*0.1,0)).rgb;
+	float interpolated = 0.;
+	if (UV.y > 0.0) {
+		interpolated = UV.y/height;
+	}
+	
+	if (UV.y < height) {
+		ALPHA = step(0.5,mix(noise,1.0,interpolated-0.3));
+	}
+}