public void PlaceSprites(Level level, int amount)
{
spriteGrid = new List <BackgroundSprite> [
(int)Math.Ceiling(level.Size.X / GridSize),
(int)Math.Ceiling((level.Size.Y - level.BottomPos) / GridSize)];
sprites = new List <BackgroundSprite>();
for (int i = 0; i < amount; i++)
{
BackgroundSpritePrefab prefab = GetRandomPrefab(level.GenerationParams.Name);
GraphEdge selectedEdge = null;
Vector2 edgeNormal = Vector2.One;
Vector2? pos = FindSpritePosition(level, prefab, out selectedEdge, out edgeNormal);
if (pos == null)
{
continue;
}
float rotation = 0.0f;
if (prefab.AlignWithSurface)
{
rotation = MathUtils.VectorToAngle(new Vector2(edgeNormal.Y, edgeNormal.X));
}
rotation += Rand.Range(prefab.RandomRotation.X, prefab.RandomRotation.Y, Rand.RandSync.Server);
var newSprite = new BackgroundSprite(prefab,
new Vector3((Vector2)pos, Rand.Range(prefab.DepthRange.X, prefab.DepthRange.Y, Rand.RandSync.Server)), Rand.Range(prefab.Scale.X, prefab.Scale.Y, Rand.RandSync.Server), rotation);
//calculate the positions of the corners of the rotated sprite
Vector2 halfSize = newSprite.Prefab.Sprite.size * newSprite.Scale / 2;
var spriteCorners = new List <Vector2>
{
-halfSize, new Vector2(-halfSize.X, halfSize.Y),
halfSize, new Vector2(halfSize.X, -halfSize.Y)
};
Vector2 pivotOffset = newSprite.Prefab.Sprite.Origin * newSprite.Scale - halfSize;
pivotOffset.X = -pivotOffset.X;
pivotOffset = new Vector2(
(float)(pivotOffset.X * Math.Cos(-rotation) - pivotOffset.Y * Math.Sin(-rotation)),
(float)(pivotOffset.X * Math.Sin(-rotation) + pivotOffset.Y * Math.Cos(-rotation)));
for (int j = 0; j < 4; j++)
{
spriteCorners[j] = new Vector2(
(float)(spriteCorners[j].X * Math.Cos(-rotation) - spriteCorners[j].Y * Math.Sin(-rotation)),
(float)(spriteCorners[j].X * Math.Sin(-rotation) + spriteCorners[j].Y * Math.Cos(-rotation)));
spriteCorners[j] += pos.Value + pivotOffset;
}
float minX = spriteCorners.Min(c => c.X) - newSprite.Position.Z;
float maxX = spriteCorners.Max(c => c.X) + newSprite.Position.Z;
float minY = spriteCorners.Min(c => c.Y) - newSprite.Position.Z - level.BottomPos;
float maxY = spriteCorners.Max(c => c.Y) + newSprite.Position.Z - level.BottomPos;
#if CLIENT
if (newSprite.ParticleEmitters != null)
{
foreach (ParticleEmitter emitter in newSprite.ParticleEmitters)
{
Rectangle particleBounds = emitter.CalculateParticleBounds(pos.Value);
minX = Math.Min(minX, particleBounds.X);
maxX = Math.Max(maxX, particleBounds.Right);
minY = Math.Min(minY, particleBounds.Y - level.BottomPos);
maxY = Math.Max(maxY, particleBounds.Bottom - level.BottomPos);
}
}
#endif
sprites.Add(newSprite);
int xStart = (int)Math.Floor(minX / GridSize);
int xEnd = (int)Math.Floor(maxX / GridSize);
if (xEnd < 0 || xStart >= spriteGrid.GetLength(0))
{
continue;
}
int yStart = (int)Math.Floor(minY / GridSize);
int yEnd = (int)Math.Floor(maxY / GridSize);
if (yEnd < 0 || yStart >= spriteGrid.GetLength(1))
{
continue;
}
xStart = Math.Max(xStart, 0);
xEnd = Math.Min(xEnd, spriteGrid.GetLength(0) - 1);
yStart = Math.Max(yStart, 0);
yEnd = Math.Min(yEnd, spriteGrid.GetLength(1) - 1);
for (int x = xStart; x <= xEnd; x++)
{
for (int y = yStart; y <= yEnd; y++)
{
if (spriteGrid[x, y] == null)
{
spriteGrid[x, y] = new List <BackgroundSprite>();
}
spriteGrid[x, y].Add(newSprite);
}
}
}
}
public void PlaceSprites(Level level, int amount)
{
sprites = new List <BackgroundSprite> [
(int)Math.Ceiling(level.Size.X / GridSize),
(int)Math.Ceiling(level.Size.Y / GridSize)];
for (int x = 0; x < sprites.GetLength(0); x++)
{
for (int y = 0; y < sprites.GetLength(1); y++)
{
sprites[x, y] = new List <BackgroundSprite>();
}
}
for (int i = 0; i < amount; i++)
{
BackgroundSpritePrefab prefab = GetRandomPrefab(level.GenerationParams.Name);
GraphEdge selectedEdge = null;
Vector2 edgeNormal = Vector2.One;
Vector2? pos = FindSpritePosition(level, prefab, out selectedEdge, out edgeNormal);
if (pos == null)
{
continue;
}
float rotation = 0.0f;
if (prefab.AlignWithSurface)
{
rotation = MathUtils.VectorToAngle(new Vector2(edgeNormal.Y, edgeNormal.X));
}
rotation += Rand.Range(prefab.RandomRotation.X, prefab.RandomRotation.Y, Rand.RandSync.ClientOnly);
var newSprite = new BackgroundSprite(prefab,
new Vector3((Vector2)pos, Rand.Range(prefab.DepthRange.X, prefab.DepthRange.Y, Rand.RandSync.ClientOnly)), Rand.Range(prefab.Scale.X, prefab.Scale.Y, Rand.RandSync.ClientOnly), rotation);
//calculate the positions of the corners of the rotated sprite
Vector2 halfSize = newSprite.Prefab.Sprite.size * newSprite.Scale / 2;
var spriteCorners = new Vector2[]
{
-halfSize, new Vector2(-halfSize.X, halfSize.Y),
halfSize, new Vector2(halfSize.X, -halfSize.Y)
};
Vector2 pivotOffset = newSprite.Prefab.Sprite.Origin * newSprite.Scale - halfSize;
pivotOffset.X = -pivotOffset.X;
pivotOffset = new Vector2(
(float)(pivotOffset.X * Math.Cos(-rotation) - pivotOffset.Y * Math.Sin(-rotation)),
(float)(pivotOffset.X * Math.Sin(-rotation) + pivotOffset.Y * Math.Cos(-rotation)));
for (int j = 0; j < 4; j++)
{
spriteCorners[j] = new Vector2(
(float)(spriteCorners[j].X * Math.Cos(-rotation) - spriteCorners[j].Y * Math.Sin(-rotation)),
(float)(spriteCorners[j].X * Math.Sin(-rotation) + spriteCorners[j].Y * Math.Cos(-rotation)));
spriteCorners[j] += (Vector2)pos + pivotOffset;
}
//newSprite.spriteCorners = spriteCorners;
int minX = (int)Math.Floor((spriteCorners.Min(c => c.X) - newSprite.Position.Z) / GridSize);
int maxX = (int)Math.Floor((spriteCorners.Max(c => c.X) + newSprite.Position.Z) / GridSize);
if (minX < 0 || maxX >= sprites.GetLength(0))
{
continue;
}
int minY = (int)Math.Floor((spriteCorners.Min(c => c.Y) - newSprite.Position.Z) / GridSize);
int maxY = (int)Math.Floor((spriteCorners.Max(c => c.Y) + newSprite.Position.Z) / GridSize);
if (minY < 0 || maxY >= sprites.GetLength(1))
{
continue;
}
for (int x = minX; x <= maxX; x++)
{
for (int y = minY; y <= maxY; y++)
{
sprites[x, y].Add(newSprite);
}
}
}
}