Add boost

Config/DefaultEngine.ini

@@ -9,6 +9,7 @@ AppliedDefaultGraphicsPerformance=Maximum
 
 [/Script/EngineSettings.GameMapsSettings]
 GlobalDefaultGameMode=/Game/GameModeBase_BP.GameModeBase_BP_C
+EditorStartupMap=/Game/TestMap.TestMap
 
 [/Script/Engine.CollisionProfile]
 -Profiles=(Name="NoCollision",CollisionEnabled=NoCollision,ObjectTypeName="WorldStatic",CustomResponses=((Channel="Visibility",Response=ECR_Ignore),(Channel="Camera",Response=ECR_Ignore)),HelpMessage="No collision",bCanModify=False)

Config/DefaultInput.ini

@@ -93,6 +93,8 @@ FOVScale=0.011110
 DoubleClickTime=0.200000
 +ActionMappings=(ActionName="Shoot",bShift=False,bCtrl=False,bAlt=False,bCmd=False,Key=LeftMouseButton)
 +ActionMappings=(ActionName="Shoot",bShift=False,bCtrl=False,bAlt=False,bCmd=False,Key=Gamepad_RightTrigger)
++ActionMappings=(ActionName="Boost",bShift=False,bCtrl=False,bAlt=False,bCmd=False,Key=RightMouseButton)
++ActionMappings=(ActionName="Boost",bShift=False,bCtrl=False,bAlt=False,bCmd=False,Key=Gamepad_RightShoulder)
 +AxisMappings=(AxisName="MoveForward",Scale=1.000000,Key=W)
 +AxisMappings=(AxisName="MoveForward",Scale=-1.000000,Key=S)
 +AxisMappings=(AxisName="MoveRight",Scale=1.000000,Key=D)

Source/PresidentsBrigade/PlayerPawn.cpp

@@ -3,13 +3,25 @@
 
 #include "PlayerPawn.h"
 #include "Camera/CameraComponent.h"
+#include "GameFramework/FloatingPawnMovement.h"
+#include "Math/UnrealMathUtility.h"
+#include "Util.h"
 
+#define LogError(Msg) Util::log_error(TEXT("APlayerPawn"), Msg)
 
 APlayerPawn::APlayerPawn(const FObjectInitializer &object_initializer): 
 	ABasePawn(object_initializer)
 {
 	main_camera = object_initializer.CreateDefaultSubobject<UCameraComponent>(this, FName("MainCamera"));
 	main_camera->SetupAttachment(root_component);
+
+	boost_multiplier = 3.0f;
+	reset_threshold_s = .5f;
+	cooldown_threshold_s = 3.0f;
+
+	// You can boost right away.
+	cooldown_wait_s = cooldown_threshold_s + 1.0f;
+	reset_wait_s = reset_threshold_s + 1.0f;
 }
 
 // Called to bind functionality to input
@@ -19,4 +31,66 @@ void APlayerPawn::SetupPlayerInputComponent(UInputComponent* PlayerInputComponen
 	PlayerInputComponent->BindAxis("MoveForward", this, &ABasePawn::handle_move_forward);
 	PlayerInputComponent->BindAxis("MoveRight", this, &ABasePawn::handle_move_right);
 	PlayerInputComponent->BindAction("Shoot", EInputEvent::IE_Pressed, this, &ABasePawn::shoot);
+	PlayerInputComponent->BindAction("Boost", EInputEvent::IE_Pressed, this, &APlayerPawn::boost);
+	PlayerInputComponent->BindAction("Boost", EInputEvent::IE_Released, this, &APlayerPawn::reset_boost);
+}
+
+void APlayerPawn::Tick(float delta_time)
+{
+	Super::Tick(delta_time);
+	if (cooldown_wait_s <= cooldown_threshold_s)
+	{
+		cooldown_wait_s += delta_time;
+	}
+
+	if (reset_wait_s <= reset_threshold_s)
+	{
+		reset_wait_s += delta_time;
+	}
+
+	if (reset_wait_s > reset_threshold_s)
+	{
+		reset_boost();
+	}
+}
+
+void APlayerPawn::boost()
+{
+	const bool boost_allowed = cooldown_wait_s > cooldown_threshold_s;
+	if (!boost_allowed)
+	{
+		LogError("Cannot boost! You're on cooldown");
+		return;
+	}
+
+	const float current_speed = movement_component->GetMaxSpeed();
+	const float current_accel = movement_component->Acceleration;
+	if (!default_max_speed || FMath::IsNearlyEqual(current_speed, default_max_speed, 0.001f))
+	{
+		default_max_speed = current_speed;
+		default_max_accel = current_accel;
+		movement_component->MaxSpeed = default_max_speed * boost_multiplier;
+		movement_component->Acceleration = default_max_accel * boost_multiplier;
+
+		reset_wait_s = 0;
+	}
+}
+
+void APlayerPawn::reset_boost()
+{
+	if (!default_max_speed)
+	{
+		// We haven't boosted yet. Ignore.
+		return;
+	}
+
+	const float current_speed = movement_component->GetMaxSpeed();
+	const float current_accel = movement_component->Acceleration;
+	if (!FMath::IsNearlyEqual(current_speed, default_max_speed, 0.001f))
+	{
+		movement_component->MaxSpeed = default_max_speed;
+		movement_component->Acceleration = default_max_accel;
+
+		cooldown_wait_s = 0;
+	}
 }

Source/PresidentsBrigade/PlayerPawn.h

@@ -18,10 +18,54 @@ class PRESIDENTSBRIGADE_API APlayerPawn : public ABasePawn
 public:
 	// Sets default values for this pawn's properties
 	APlayerPawn(const FObjectInitializer &object_initializer);
+
+	virtual void Tick(float delta_time) override;
 	
 	// Called to bind functionality to input
 	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
 protected:
 	UPROPERTY(EditAnywhere, Category="Player")
 	UCameraComponent* main_camera;
+
+	/**
+	 * Multiplier to apply to current speed while boosting. Applies to max speed and accleration.
+	 */
+	UPROPERTY(EditAnywhere, Category = "Movement")
+	float boost_multiplier;
+
+	/**
+	 * Time in seconds before auto resetting boost.
+	 */
+	UPROPERTY(EditAnywhere, Category = "Movement")
+	float reset_threshold_s;
+
+	/**
+	 * Time in seconds before allowed to boost again.
+	 */
+	UPROPERTY(EditAnywhere, Category = "Movement")
+	float cooldown_threshold_s;
+
+private:
+	void boost();
+	void reset_boost();
+
+	/**
+	 * Default max speed. Cached when boost is called.
+	 */
+	float default_max_speed;
+
+	/**
+	 * Default max acceleration. Cached when boost is called.
+	 */
+	float default_max_accel;
+
+	/**
+	 * Time waited for boost reset.
+	 */
+	float reset_wait_s;
+
+	/**
+	 * Time waited for cooldown.
+	 */
+	float cooldown_wait_s;
 };

todo.txt

@@ -9,10 +9,12 @@ xAdd presidents car
 xAdd enemy cars
   xComes from off screen
   xAttacks president car
-Add dash
+xAdd dash
+Shoot from any direction
+Shoot at continuous rate when holding shoot button
+Add local multiplayer
 Add netcode
 Add player damage
-Shoot at continuous rate when holding shoot button
 Add HUD UI
 Add menu
 Add sounds