From e75c93aeb4f383106b11a04e0785b0f9627f7faa Mon Sep 17 00:00:00 2001
From: Kingsmedia <bert@kingsmedia.nl>
Date: Thu, 5 May 2022 18:16:59 +0200
Subject: [PATCH] 81 - Drawing the Crosshairs

---
 Source/Blaster/HUD/BlasterHUD.cpp | 51 ++++++++++++++++++++++++++++++-
 Source/Blaster/HUD/BlasterHUD.h   |  2 ++
 Source/Blaster/Weapon/Casing.cpp  |  1 +
 3 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/Source/Blaster/HUD/BlasterHUD.cpp b/Source/Blaster/HUD/BlasterHUD.cpp
index 2f7eece..77614b3 100644
--- a/Source/Blaster/HUD/BlasterHUD.cpp
+++ b/Source/Blaster/HUD/BlasterHUD.cpp
@@ -7,5 +7,54 @@ void ABlasterHUD::DrawHUD()
 {
 	Super::DrawHUD();
 
-	
+	FVector2D ViewportSize;
+	if (GEngine)
+	{
+		GEngine->GameViewport->GetViewportSize(ViewportSize);
+		const FVector2D ViewportCenter(ViewportSize.X / 2.f, ViewportSize.Y / 2.f);
+
+		if (HUDPackage.CrosshairsCenter)
+		{
+			DrawCrosshair(HUDPackage.CrosshairsCenter, ViewportCenter);
+		}
+		if (HUDPackage.CrosshairsLeft)
+		{
+			DrawCrosshair(HUDPackage.CrosshairsLeft, ViewportCenter);
+		}
+		if (HUDPackage.CrosshairsRight)
+		{
+			DrawCrosshair(HUDPackage.CrosshairsRight, ViewportCenter);
+		}
+		if (HUDPackage.CrosshairsTop)
+		{
+			DrawCrosshair(HUDPackage.CrosshairsTop, ViewportCenter);
+		}
+		if (HUDPackage.CrosshairsBottom)
+		{
+			DrawCrosshair(HUDPackage.CrosshairsBottom, ViewportCenter);
+		}
+	}
+}
+
+void ABlasterHUD::DrawCrosshair(UTexture2D* Texture, FVector2D ViewportCenter)
+{
+	const float TextureWidth = Texture->GetSizeX();
+	const float TextureHeight = Texture->GetSizeY();
+	const FVector2D TextureDrawPoint(
+		ViewportCenter.X - (TextureWidth / 2.f),
+		ViewportCenter.Y - (TextureHeight / 2.f)
+	);
+
+	DrawTexture(
+		Texture,
+		TextureDrawPoint.X,
+		TextureDrawPoint.Y,
+		TextureWidth,
+		TextureHeight,
+		0.f,
+		0.f,
+		1.f,
+		1.f,
+		FLinearColor::White
+	);
 }
diff --git a/Source/Blaster/HUD/BlasterHUD.h b/Source/Blaster/HUD/BlasterHUD.h
index c12a473..4edf764 100644
--- a/Source/Blaster/HUD/BlasterHUD.h
+++ b/Source/Blaster/HUD/BlasterHUD.h
@@ -33,6 +33,8 @@ public:
 private:
 	FHUDPackage HUDPackage;
 
+	void DrawCrosshair(UTexture2D* Texture, FVector2D ViewportCenter);
+
 public:
 	FORCEINLINE void SetHUDPackage(const FHUDPackage& Package) { HUDPackage = Package; };
 };
diff --git a/Source/Blaster/Weapon/Casing.cpp b/Source/Blaster/Weapon/Casing.cpp
index 19ed785..2c3b904 100644
--- a/Source/Blaster/Weapon/Casing.cpp
+++ b/Source/Blaster/Weapon/Casing.cpp
@@ -14,6 +14,7 @@ ACasing::ACasing()
 	ShellEjectionImpulseMax = 12.f;
 	CasingMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("CasingMesh"));
 	CasingMesh->SetCollisionResponseToChannel(ECC_Camera, ECR_Ignore);
+	CasingMesh->SetCollisionResponseToChannel(ECC_Pawn, ECR_Ignore);
 	CasingMesh->SetSimulatePhysics(true);
 	CasingMesh->SetEnableGravity(true);
 	CasingMesh->SetNotifyRigidBodyCollision(true);