initial commit

AdventureMap.cpp

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+// Fill out your copyright notice in the Description page of Project Settings.
+
+
+#include "AdventureMap.h"
+#include "HexTile.h"
+#include "AdventureCameraPawn.h"
+#include "AdventureCharacter.h"
+#include "Kismet/GameplayStatics.h"
+
+
+// Sets default values
+AAdventureMap::AAdventureMap()
+{
+}
+
+// Called when the game starts or when spawned
+void AAdventureMap::BeginPlay()
+{
+	Super::BeginPlay();
+	UWorld* World = GetWorld();
+	if (IsValid(BaseTileClass)) 
+	{ 
+		MakeGrid();
+	}
+}
+
+// Every Hex Tile's index within the Grid Array can be derived from its Q and R coordinates
+int32 AAdventureMap::GridIndex(int32 qAxial, int32 rAxial) 
+{	
+	/*	
+	*	The Q axis is (i.e. columns are) oriented diagonally.
+	*	The Hex Grid has a rough square shape, hence the Q coordinates must be offset by -1 every other row.
+	*/
+	int32 column = qAxial + FMath::FloorToInt(rAxial / 2);
+	return (rAxial * GridSize) + column;
+}
+
+// Called once on Begin Play
+void AAdventureMap::MakeGrid() 
+{	
+	UWorld* World = GetWorld();
+	FVector NextHexAt = FVector();
+	float HexWidth = sqrt(3) * TileSize;
+	int QOffset = 0;
+
+	for (int r = 1; r <= GridSize; r++) 
+	{
+		float XOffset = 0.f;
+
+		if (r % 2 != 0)	
+		{ 
+			if (r > 1) 
+			{
+				QOffset--; // The Q axis is (i.e. columns are) oriented diagonally.
+			}	
+		}
+		else
+		{
+			XOffset = HexWidth / 2;
+		}
+
+		for (int q = 1; q <= GridSize; q++)
+		{
+			NextHexAt.X = XOffset + (HexWidth * q);
+			NextHexAt.Y = TileSize * 1.5f * r;
+			NextHexAt.Z = 0.f;
+
+			FTransform SpawnTransform = FTransform(NextHexAt);
+			AHexTile* Tile = World->SpawnActor<AHexTile>(BaseTileClass, SpawnTransform);
+
+			Tile->Q = q - 1 + QOffset;
+			Tile->R = r - 1;
+
+			Grid.Add(Tile);
+		}
+	}
+
+	for (auto& tile : Grid)
+	{
+		tile->Index = GridIndex(tile->Q, tile->R);
+	}
+}
+
+AHexTile* AAdventureMap::RandomHex()
+{
+	int32 SpawnHex = GridIndex(FMath::RandRange(0, GridSize), FMath::RandRange(0, GridSize));
+	return Grid[SpawnHex];
+}