public static Vector3 GetRandomPosition(SpawnEdge edge, Rect rect)
{
float x = 0;
float y = 0;
switch (edge)
{
case SpawnEdge.TOP:
x = Random.Range(rect.xMin, rect.xMax);
y = rect.yMax;
break;
case SpawnEdge.BOTTOM:
x = Random.Range(rect.xMin, rect.xMax);
y = rect.yMin;
break;
case SpawnEdge.LEFT:
x = rect.xMin;
y = Random.Range(rect.yMin, rect.yMax);
break;
case SpawnEdge.RIGHT:
x = rect.xMax;
y = Random.Range(rect.yMin, rect.yMax);
break;
}
return(new Vector3(x, y));
}
public static Vector2 GetRandomForceDirection(SpawnEdge edge, Rect rangeRect, Rect clampRect)
{
float forceDirectionPointX = 0;
float forceDirectionPointY = 0;
float rand = 0;
switch (edge)
{
case SpawnEdge.TOP:
case SpawnEdge.BOTTOM:
rand = Random.Range(rangeRect.xMin, rangeRect.xMax);
forceDirectionPointX = Mathf.Clamp(rand, clampRect.xMin, clampRect.xMax);
forceDirectionPointY = edge == SpawnEdge.TOP ? clampRect.yMax : clampRect.yMin;
break;
case SpawnEdge.LEFT:
case SpawnEdge.RIGHT:
rand = Random.Range(rangeRect.yMin, rangeRect.yMax);
forceDirectionPointX = edge == SpawnEdge.LEFT ? clampRect.xMin : clampRect.xMax;
forceDirectionPointY = Mathf.Clamp(rand, clampRect.yMin, clampRect.yMax);
break;
}
return(new Vector2(forceDirectionPointX, forceDirectionPointY));
}
private void CreateAsteroid()
{
Rect worldRect = State.Instance.Get <StateCamera>().WorldRect;
GameObject prefab = this.GetRandomPrefab();
GameObject go = GameObject.Instantiate(prefab);
Asteroid asteroid = go.GetComponent <Asteroid>();
float size = asteroid.Model.Size;
SpawnEdge spawnEdge = AsteroidControllerUtils.GetRandomSpawnEdge();
Rect spawnRect = RectUtils.Resize(worldRect, size * 0.5f);
Vector3 position = AsteroidControllerUtils.GetRandomPosition(spawnEdge, spawnRect);
asteroid.SetPosition(position);
Rect rangeRect = RectUtils.CreateSquare(position, size);
Rect clampRect = RectUtils.Resize(worldRect, size * -0.5f);
Vector3 forceDirection = AsteroidControllerUtils.GetRandomForceDirection(spawnEdge, rangeRect, clampRect);
asteroid.AddForces(forceDirection - position);
asteroid.Model.OnHit += this.OnHit;
}
