public ChunkGenerator(LevelConfig config, LevelObjectsPool pool, int length, int width)
{
levelConfig = config;
levelObjectsPool = pool;
this.length = Mathf.Max(length, LevelGraph.MinLength);
this.width = Mathf.Max(width, LevelGraph.MinWidth);
}
/// <summary>
/// Generate chunk cells by graph nodes
/// </summary>
/// <param name="graph"></param>
/// <param name="levelConfig"></param>
/// <param name="pool"></param>
/// <param name="chunkPosition"></param>
/// <returns></returns>
private static List <LevelObject> GenerateCells(LevelGraph graph, LevelConfig levelConfig, LevelObjectsPool pool,
Vector3 chunkPosition)
{
const int cellsPerNode = LevelGraph.CellsPerNode;
var chunkLength = graph.length * cellsPerNode;
var chunkWidth = graph.width;
var obstaclePlaces = new List <Vector2Int>();
// Fill grid by wall and floor random configs
var cells = new Grid <CellConfig>(chunkWidth, chunkLength);
for (var l = 0; l < graph.length; l++)
{
for (var x = 0; x < graph.width; x++)
{
var node = graph.nodes.Get(x, l);
var end = l * cellsPerNode + cellsPerNode;
if (node.passable)
{
var y = l * cellsPerNode;
var coordinates = new Vector2Int(x, y);
// Store passable coordinate for placing some obstacle
obstaclePlaces.Add(coordinates);
for (; y < end; y++)
{
cells.Set(x, y, GetRandom(levelConfig.floors));
}
}
else
{
var y = l * cellsPerNode;
cells.Set(x, y, levelConfig.walls[Random.Range(0, levelConfig.walls.Length)]);
y++;
if (graph.nodes.TryGet(x, l + 1, out var nextNode) && !nextNode.passable)
{
for (; y < end; y++)
{
cells.Set(x, y, GetRandom(levelConfig.walls));
}
}
else
{
for (; y < end; y++)
{
cells.Set(x, y, GetRandom(levelConfig.floors));
}
}
}
}
}
// Try to place random obstacle config in previously founded coordinates
foreach (var coordinates in obstaclePlaces)
{
var chance = Random.value;
var obstacleConfigs = Shuffle <CellConfig> .ToQueue(levelConfig.obstacles);
while (obstacleConfigs.Count > 0)
{
var config = obstacleConfigs.Dequeue();
// Check if obstacle placement restrictions passed
if (!config.CheckPlacement(chance, coordinates, cells))
{
continue;
}
cells.Set(coordinates, config);
break;
}
}
// Setup instances
var gameObjects = new List <LevelObject>(cells.items.Length);
gameObjects.AddRange(cells.items.Select((t, i) =>
t.SetupInstance(pool.CreateFor(t.prefab),
ToVector3(cells.GetIndexCoordinates(i)), chunkPosition)));
return(gameObjects);
}
/// <summary>
/// Generate chunk items by graph nodes
/// </summary>
/// <param name="graph"></param>
/// <param name="levelConfig"></param>
/// <param name="pool"></param>
/// <param name="chunkPosition"></param>
/// <returns></returns>
private static List <LevelObject> GenerateItems(LevelGraph graph, LevelConfig levelConfig, LevelObjectsPool pool,
Vector3 chunkPosition)
{
const int itemsCount = 5;
const int itemsCountOffset = 1;
var levelObjects = new List <LevelObject>();
var orderedItems = levelConfig.items.OrderBy(item => item.generateChance).ToArray();
// Generate one items chain per graph row in random lane
for (var y = 0; y < graph.length; y++)
{
var xShuffle = Shuffle <int> .ToQueue(Enumerable.Range(0, graph.width));
while (xShuffle.Count > 0)
{
var x = xShuffle.Dequeue();
var node = graph.nodes.Get(x, y);
if (!node.passable)
{
continue;
}
var target = GetRandom(node.exits);
// Build smooth items "path" by Bezier curve
var offset = new Vector3(0, 0, 0.5f);
var a = new Vector3(node.position.x, 0, node.position.y * LevelGraph.CellsPerNode) + offset;
var d = new Vector3(target.x, 0, target.y * LevelGraph.CellsPerNode) + offset;
var middle = new Vector3(0, 0, d.z - a.z) * 0.5f;
var b = a + middle;
var c = d - middle;
var bezier = new Bezier(a, b, c, d);
// Place items on curve in some range
var from = Random.Range(0, itemsCountOffset + 1);
var to = Random.Range(0, itemsCountOffset + 1) + itemsCount - itemsCountOffset;
for (var i = from; i < to; i++)
{
var chance = Random.value;
var inChunkPosition = bezier.GetPoint(1f / itemsCount * i);
foreach (var itemConfig in orderedItems)
{
if (!itemConfig.CheckChance(chance))
{
continue;
}
levelObjects.Add(itemConfig.SetupInstance(pool.CreateFor(itemConfig),
inChunkPosition, chunkPosition));
break;
}
}
break;
}
}
return(levelObjects);
}
