From a082883751007e45a09f238a013d398774203e7e Mon Sep 17 00:00:00 2001
From: "Nikolai V. Chr" <emptyyetfull@gmail.com>
Date: Tue, 27 Apr 2021 18:01:59 +0200
Subject: [PATCH] Dirt trail

---
 ZSU-23/Models/ZSU-23-4M.xml | 122 ++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)

diff --git a/ZSU-23/Models/ZSU-23-4M.xml b/ZSU-23/Models/ZSU-23-4M.xml
index fe88897..122b3d7 100644
--- a/ZSU-23/Models/ZSU-23-4M.xml
+++ b/ZSU-23/Models/ZSU-23-4M.xml
@@ -416,7 +416,129 @@
 	</offsets>
     </model>
 
+	<particlesystem>
+		<name>trail</name>
+		<texture>Effects/smoke.png</texture>
+		<emissive>false</emissive>
+		<lighting>false</lighting>
 
+		<offsets>
+			<x-m>0</x-m>
+			<y-m>0</y-m>
+			<z-m>0</z-m>
+		</offsets>
+
+		<condition>
+			<greater-than>
+				<property>velocities/groundspeed-kt</property>
+				<value>10</value>
+			</greater-than>
+		</condition>
+
+		<attach>world</attach>
+
+		<placer>
+			<type>segments</type>
+			<vertex>
+				<x-m>0</x-m>
+				<y-m>0</y-m>
+				<z-m>0</z-m>
+			</vertex>
+			<vertex>
+				<x-m>1.5</x-m>
+				<y-m>0</y-m>
+				<z-m>0</z-m>
+			</vertex>
+				<vertex>
+				<x-m>3</x-m>
+				<y-m>0</y-m>
+				<z-m>0</z-m>
+			</vertex>
+		</placer>
+
+		<shooter>
+			<theta-min-deg>45</theta-min-deg>
+			<theta-max-deg>80</theta-max-deg>
+			<phi-min-deg>-5</phi-min-deg>
+			<phi-max-deg>5</phi-max-deg>
+			<speed-mps>
+				<property>velocities/groundspeed-kt</property>
+				<spread>100</spread>
+				<!--<factor>6</factor>-->
+			</speed-mps>
+			<rotation-speed>
+				<x-max-deg-sec>15</x-max-deg-sec>
+				<x-min-deg-sec>-15</x-min-deg-sec>
+				<y-max-deg-sec>15</y-max-deg-sec>
+				<y-min-deg-sec>-15</y-min-deg-sec>
+				<z-max-deg-sec>15</z-max-deg-sec>
+				<z-min-deg-sec>-15</z-min-deg-sec>
+			</rotation-speed>
+		</shooter>
+
+		<counter>
+			<particles-per-sec>
+				<property>velocities/groundspeed-kt</property>
+				<factor>2.5</factor>
+				<!--<value>250</value>-->
+				<spread>100</spread>
+			</particles-per-sec>		</counter>
+
+		<align>billboard</align>
+
+		<particle>
+			<start>
+				<color>
+					<red>
+						<value>0.95</value>
+					</red>
+					<green>
+						<value>0.85</value>
+					</green>
+					<blue>
+						<value>0.65</value>
+					</blue>
+					<alpha>
+						<value>0.05</value>
+					</alpha>
+				</color>
+				<size>
+					<value>0.5</value>
+				</size>
+			</start>
+			<end>
+				<color>
+					<red>
+						<value>1</value>
+					</red>
+					<green>
+						<value>0.8</value>
+					</green>
+					<blue>
+						<value>0.7</value>
+					</blue>
+					<alpha>
+						<value>0.020</value>
+					</alpha>
+				</color>
+				<size>
+					<value>10</value>
+				</size>
+			</end>
+			<life-sec>
+				<value>1.5</value>
+			</life-sec>
+			<mass-kg>0.025</mass-kg>
+			<radius-m>0.125</radius-m>
+		</particle>
+
+		<program>
+			<fluid>air</fluid>
+			<gravity>true</gravity>
+			<wind>true</wind>
+		</program>
+
+	</particlesystem>
 
 </PropertyList>