Tweaked values for the effect to look better

include/Game/Systems/PlayerMovementSystem.h

@@ -30,6 +30,8 @@ private:
     bool m_LeftFoot = false;
     // To get a difference when calculating the walking state.
     glm::vec3 m_LastPosition = glm::vec3();
+    // Used to track afterimages for sprint effect.
+    float m_SprintEffectTimer;
     // The logic for making the sound play when player is moving
     void playerStep(double dt);
     // Spawn a hexagon at origin of an Entity

resources/Schema/Components/SprintAbility.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
 <SprintAbility xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="SprintAbility.xsd">
-	<StrengthOfEffect>2.0</StrengthOfEffect>
+	<StrengthOfEffect>1.3</StrengthOfEffect>
+	<Active>false</Active>
 </SprintAbility>

resources/Schema/Components/SprintAbility.xsd

@@ -12,6 +12,9 @@
 				<xs:element name="StrengthOfEffect" type="t:double" minOccurs="0">
 					<xs:annotation><xs:documentation>This is the strength of the sprint effect</xs:documentation></xs:annotation>
 				</xs:element>
+				<xs:element name="Active" type="t:bool" minOccurs="0">
+					<xs:annotation><xs:documentation>True if currently sprinting.</xs:documentation></xs:annotation>
+				</xs:element>
 			</xs:all>
 		</xs:complexType>
 	</xs:element>

resources/Schema/Entities/SprintEffect.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<Entity name="SprintEffect" xmlns:c="components" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../Types/Entity.xsd">
+
+  <Components>
+    <c:Animation>
+      <AnimationName1></AnimationName1>
+      <AnimationName2></AnimationName2>
+      <AnimationName3></AnimationName3>
+    </c:Animation>
+    <c:Lifetime>
+      <Lifetime>0.15</Lifetime>
+    </c:Lifetime>
+    <c:ExplosionEffect>
+      <Velocity X="0" Y="0" Z="0"/>
+      <ExplosionDuration>0.15</ExplosionDuration>
+    </c:ExplosionEffect>
+    <c:Model>
+      <Resource></Resource>
+    </c:Model>
+    <c:Transform/>
+  </Components>
+
+  <Children/>
+
+</Entity>

src/Game/Systems/PlayerMovementSystem.cpp

@@ -2,6 +2,7 @@
 
 PlayerMovementSystem::PlayerMovementSystem(SystemParams params)
     : System(params)
+    , m_SprintEffectTimer(0.f)
 {
     EVENT_SUBSCRIBE_MEMBER(m_EPlayerSpawned, &PlayerMovementSystem::OnPlayerSpawned);
     EVENT_SUBSCRIBE_MEMBER(m_EDoubleJump, &PlayerMovementSystem::OnDoubleJump);
@@ -19,8 +20,48 @@ void PlayerMovementSystem::Update(double dt)
 {
     updateMovementControllers(dt);
     // Only do physics calculations on client and only for themselves.
-    if (IsClient && LocalPlayer.Valid()) {
-        updateVelocity(LocalPlayer, dt);
+    if (IsClient) {
+        if (LocalPlayer.Valid()){
+            updateVelocity(LocalPlayer, dt);
+        }
+        m_SprintEffectTimer += dt;
+        if (m_SprintEffectTimer < 0.016f) {
+            return;
+        }
+        m_SprintEffectTimer = 0.f;
+        const ComponentPool* pool = m_World->GetComponents("SprintAbility");
+        if (pool == nullptr) {
+            return;
+        }
+        for (auto cSprint : *pool) {
+            if (cSprint.EntityID != LocalPlayer.ID && (bool)cSprint["Active"]) {
+                // Spawn one afterimage for each player that sprints.
+                EntityWrapper player(m_World, cSprint.EntityID);
+                auto entityFile = ResourceManager::Load<EntityFile>("Schema/Entities/SprintEffect.xml");
+                EntityWrapper sprintEffect = entityFile->MergeInto(m_World);
+                auto playerModel = player.FirstChildByName("PlayerModel");
+                if (!playerModel.Valid()) {
+                    continue;
+                }
+                if (!playerModel.HasComponent("Model")) {
+                    continue;
+                }
+                if (!playerModel.HasComponent("Animation")) {
+                    continue;
+                }
+                auto playerEntityModel = playerModel["Model"];
+                auto playerEntityAnimation = playerModel["Animation"];
+                playerEntityModel.Copy(sprintEffect["Model"]);
+                playerEntityAnimation.Copy(sprintEffect["Animation"]);
+                sprintEffect["ExplosionEffect"]["EndColor"] = (glm::vec4)playerEntityModel["Color"];
+                ((glm::vec4&)sprintEffect["ExplosionEffect"]["EndColor"]).w = 0.f;
+                sprintEffect["Animation"]["Speed1"] = 0.0;
+                sprintEffect["Animation"]["Speed2"] = 0.0;
+                sprintEffect["Animation"]["Speed3"] = 0.0;
+                sprintEffect["Transform"]["Position"] = (glm::vec3)player["Transform"]["Position"];
+                sprintEffect["Transform"]["Orientation"] = (glm::vec3)player["Transform"]["Orientation"];
+            }
+        }
     }
 }
 
@@ -64,6 +105,7 @@ void PlayerMovementSystem::updateMovementControllers(double dt)
         }
         bool sniperSprinting = false;
         if (player.HasComponent("SprintAbility")) {
+            (bool)player["SprintAbility"]["Active"] = controller->SpecialAbilityKeyDown();
             if (controller->SpecialAbilityKeyDown()) {
                 playerMovementSpeed *= (double)player["SprintAbility"]["StrengthOfEffect"];
                 playerCrouchSpeed *= (double)player["SprintAbility"]["StrengthOfEffect"];