Add single player HUD

Source/PresidentsBrigade/BasePawn.cpp

@@ -8,7 +8,6 @@
 #include "Kismet/KismetSystemLibrary.h"
 #include "Util.h"
 
-#define LogInfo(Msg) Util::log_info(TEXT("ABasePawn"), Msg)
 #define LogError(Msg) Util::log_error(TEXT("ABasePawn"), Msg)
 
 // Sets default values
@@ -71,7 +70,6 @@ void ABasePawn::handle_hit(
 	{
 		// Update current health.
 		current_health -= damage_class_map[other_class];
-		LogInfo(FString::Printf(TEXT("Total health %d"), current_health));
 	}
 }
 
@@ -102,10 +100,10 @@ void ABasePawn::Tick(float DeltaTime)
 	/*
 	 * Handle death.
 	 */
-	if (current_health <= 0)
+	if (current_health <= 0 && !death_handled)
 	{
 		handle_death();
-		current_health = max_health;
+		death_handled = true;
 	}
 }
 
@@ -155,10 +153,9 @@ void ABasePawn::shoot()
 		if (use_aim_assist)
 		{
 			float assist_yaw;
-			const bool succeess = aim_assist(player_location, rotator, assist_yaw);
-			if (assist_yaw)
+			const bool success = aim_assist(player_location, rotator, assist_yaw);
+			if (success)
 			{
-				LogInfo("Aim assist activated!");
 				rotator.Yaw = assist_yaw;
 			}
 		}
@@ -272,4 +269,4 @@ void ABasePawn::destroy_self()
 	 * Remove thyself from this world.
 	 */
 	Destroy();
-}
+}

Source/PresidentsBrigade/BasePawn.h

@@ -8,6 +8,8 @@
 #include "Kismet/KismetMathLibrary.h"
 #include "BasePawn.generated.h"
 
+#define LogInfo(Msg) Util::log_info(TEXT("ABasePawn"), Msg)
+
 class UFloatingPawnMovement;
 
 UCLASS()
@@ -21,6 +23,16 @@ public:
 
 	FVector get_location() const;
 
+	FORCEINLINE float get_current_health_percentage() const
+	{
+		if (max_health == 0)
+		{
+			return 0;
+		}
+
+		return (current_health * 1.0f) / max_health;
+	}
+
 	// Called every frame
 	virtual void Tick(float DeltaTime) override;
 	virtual void handle_move_right(float axis);
@@ -141,6 +153,11 @@ protected:
 	 */
 	int32 current_health;
 
+	/**
+	 * Death handled.
+	 */
+	bool death_handled;
+
 	/**
 	 * Current ammo.
 	 */

Source/PresidentsBrigade/PlayerPawn.cpp

@@ -6,6 +6,7 @@
 #include "GameFramework/FloatingPawnMovement.h"
 #include "Math/UnrealMathUtility.h"
 #include "Util.h"
+#include "EngineUtils.h"
 
 #define LogInfo(Msg) Util::log_info(TEXT("APlayerPawn"), Msg)
 #define LogError(Msg) Util::log_error(TEXT("APlayerPawn"), Msg)
@@ -68,24 +69,29 @@ void APlayerPawn::handle_overlap(
 		}
 
 		other_actor->Destroy();
-		LogInfo(FString::Printf(TEXT("Total ammo %d"), current_ammo));
 	}
 }
 
 void APlayerPawn::Tick(float delta_time)
 {
 	Super::Tick(delta_time);
-	if (cooldown_wait_s <= cooldown_threshold_s)
+	if (!init)
+	{
+		president_ref = get_president();
+		init = true;
+	}
+
+	if (cooldown_wait_s < cooldown_threshold_s)
 	{
 		cooldown_wait_s += delta_time;
 	}
 
-	if (reset_wait_s <= reset_threshold_s)
+	if (reset_wait_s < reset_threshold_s)
 	{
 		reset_wait_s += delta_time;
 	}
 
-	if (reset_wait_s > reset_threshold_s)
+	if (reset_wait_s >= reset_threshold_s)
 	{
 		reset_boost();
 	}
@@ -102,10 +108,9 @@ void APlayerPawn::Tick(float delta_time)
 
 void APlayerPawn::boost()
 {
-	const bool boost_allowed = cooldown_wait_s > cooldown_threshold_s;
+	const bool boost_allowed = cooldown_wait_s >= cooldown_threshold_s;
 	if (!boost_allowed)
 	{
-		LogError("Cannot boost! You're on cooldown");
 		return;
 	}
 
@@ -180,4 +185,39 @@ void APlayerPawn::respawn()
 	EnableInput(controller);
 	player_mesh->SetHiddenInGame(false);
 	collision->SetCollisionEnabled(ECollisionEnabled::QueryAndPhysics);
+	current_health = max_health;
+	death_handled = false;
+}
+
+/**
+ * Helper function to find president in level.
+ */
+ABasePawn* APlayerPawn::get_president() const 
+{
+	ABasePawn* found = nullptr;
+	for (TActorIterator<AActor> iterator(GetWorld()); iterator; ++iterator)
+	{
+		AActor* actor = *iterator;
+		if (actor && actor != this)
+		{
+			UClass* actor_class = actor->GetClass();
+			if (actor_class == (*president_class))
+			{
+				if (found)
+				{
+					LogError("Multiple presidents found!");
+					break;
+				}
+				
+				found = Cast<ABasePawn>(actor);
+			}
+		}
+	}
+
+	if (!found)
+	{
+	//	LogError("No president found!");
+	}
+
+	return found;
 }

Source/PresidentsBrigade/PlayerPawn.h

@@ -23,6 +23,46 @@ public:
 	
 	// Called to bind functionality to input
 	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
+
+	UFUNCTION(BlueprintCallable)
+	FORCEINLINE float get_president_health() const
+	{
+		if (president_ref)
+		{
+			return president_ref->get_current_health_percentage();
+		}
+
+		return 0;
+	}
+
+	UFUNCTION(BlueprintCallable)
+	FORCEINLINE float get_boost_cooldown_percentage() const
+	{
+		if (reset_wait_s < reset_threshold_s)
+		{
+			return 0;
+		}
+
+		if (cooldown_wait_s >= cooldown_threshold_s)
+		{
+			return 1.0f;
+		}
+
+		return cooldown_wait_s / cooldown_threshold_s;
+	}
+
+	UFUNCTION(BlueprintCallable)
+	FORCEINLINE int32 get_current_ammo() const
+	{
+		return current_ammo;
+	}
+
+	UFUNCTION(BlueprintCallable)
+	FORCEINLINE int32 get_max_ammo() const
+	{
+		return max_ammo;
+	}
+
 protected:
 	virtual void BeginPlay() override;
 	virtual void destroy_self() override;
@@ -42,6 +82,9 @@ protected:
 	UPROPERTY(EditAnywhere, Category = "Player")
 	TMap<UClass*, int> ammo_class_map;
 
+	UPROPERTY(EditAnywhere, Category = "Player")
+	TSubclassOf<ABasePawn> president_class;
+
 	/**
 	 * Multiplier to apply to current speed while boosting. Applies to max speed and accleration.
 	 */
@@ -74,6 +117,7 @@ private:
 	void boost();
 	void reset_boost();
 	void respawn();
+	ABasePawn* get_president() const;
 
 	/**
 	 * Default max speed. Cached when boost is called.
@@ -99,4 +143,14 @@ private:
 	 * Time waiting for respawn.
 	 */
 	float respawn_wait_s;
+
+	/**
+	 * True after post tick initialization.
+	 */
+	bool init;
+
+	/**
+	 * Cached reference to the president.
+	 */
+	ABasePawn* president_ref;
 };

todo.txt

@@ -18,10 +18,8 @@ xAdd auto aim
 xAdd art
   x Car models
   x Street shader
-Add HUD UI
+xAdd HUD UI for single player.
 Add sounds
-Add win condition
-  - Time based. Keep president alive until he reaches destination.
 Add juice
   Add muzzle on shoot
   Camera zoom out based on screen size? Looks too small when I shrink the window
@@ -29,8 +27,11 @@ Add juice
   Improve street shader
   Screen shake on zoom
   Particle effect on brake
+Add win condition
+  - Time based. Keep president alive until he reaches destination.
 Add menu
 Add local multiplayer
   x Blueprint
   - C++
+  - HUD UI for multiplayer
 Add netcode