private void Awake()
{
var config = new ECSConfig
{
halfRange = new Fix64(40),
deltaTime = (Fix64)0.01667f,
g = (Fix64)6.6720e-08,
};
// because of the dumb physics, this will exponentially increase calculations
const int maxParticles = 100;
_ecs = new ECS(config);
_ecs.CurrentFrame.RegisterComponent <Particle>(maxParticles);
_ecs.CurrentFrame.AddSystem(new ParticleSystem());
for (var i = 0; i < maxParticles; i++)
{
var particleEntity = _ecs.CurrentFrame.Create();
_ecs.CurrentFrame.Add <Particle>(particleEntity);
}
var particleFilter = _ecs.CurrentFrame.Filter <Particle>();
while (particleFilter.Next(out var e, out var particle))
{
particle->Mass = new Fix64(10000);
particle->Position = new Vector2(Random.Range((float)-config.halfRange, (float)config.halfRange), Random.Range((float)-config.halfRange, (float)config.halfRange)).ToFixVector2();
var ecsEntityView = Instantiate(entityView);
ecsEntityView.transform.position = particle->Position.ToUnityVector2();
ecsEntityView.Init(_ecs, e);
}
}
private void OnDestroy()
{
if (ECSConfig.IsModfy())
{
if (EditorUtility.DisplayDialog("提示", "ECS有未保存的修改，是否保存？", "保存", "放弃"))
{
ECSConfig.SaveToFile();
}
else
{
ECSConfig.ReloadFormFile();
}
}
//Undo.ClearUndo(ECSConfig.Instance);
}
void OnGUI()
{
for (int i = 0; i < ECSConfig.Instance.Contexts.Count; ++i)
{
var context = ECSConfig.Instance.Contexts[i];
using (new EditorGUILayout.VerticalScope("Box"))
{
using (new EditorGUILayout.HorizontalScope())
{
GUILayout.Label(context.Name);
GUILayout.FlexibleSpace();
if (GUILayout.Button("移除"))
{
ECSConfig.MakeModify("remove context");
ECSConfig.Instance.Contexts.RemoveAt(i);
--i;
continue;
}
}
using (new EditorGUILayout.HorizontalScope())
{
if (!string.IsNullOrEmpty(context.UpLevelContext))
{
GUILayout.Label("上层Context: ");
GUILayout.Label(context.UpLevelContext);
}
if (GUILayout.Button("选择上层Context"))
{
var names = ECSConfig.Instance.Contexts.Where(it => it.Name != context.Name && context.Name != it.UpLevelContext).Select(it => it.Name).ToArray();
if (names.Length > 0)
{
GenericMenu generic = new GenericMenu();
foreach (var name in names)
{
generic.AddItem(new GUIContent(name), name == context.UpLevelContext, () =>
{
ECSConfig.MakeModify("set up level context");
context.UpLevelContext = name;
});
}
generic.ShowAsContext();
}
}
}
GUILayout.Space(5);
if (GUILayout.Button(context.DirectoryPath, EditorStyles.linkLabel))
{
string selectPath = context.DirectoryPath;
if (selectPath.EndsWith("/"))
{
selectPath = selectPath.Substring(0, selectPath.Length - 1);
}
var obj = AssetDatabase.LoadMainAssetAtPath(selectPath);
EditorGUIUtility.PingObject(obj);
Selection.activeObject = obj;
}
if (GUILayout.Button("重新生成ECS文件"))
{
context.GenECSFile(true);
}
}
GUILayout.Space(10);
}
DrawCreate();
DrawAddExits();
if (ECSConfig.IsModfy() && GUILayout.Button("保存"))
{
ECSConfig.SaveToFile();
}
}
protected ECSConfig()
{
_instance = this;
}
public static void ReloadFormFile()
{
_instance = JsonUtility.FromJson <ECSConfig>(SaveFile);
}
private static void UpdateParticleGravity(Frame f, ulong e, Particle *particle, ECSConfig config)
{
particle->Position += particle->Velocity * config.deltaTime;
var particleFilter = f.Filter <Particle>();
while (particleFilter.Next(out var otherEntity, out var otherParticle))
{
if (otherEntity == e)
{
continue;
}
var toOther = otherParticle->Position - particle->Position;
var sqrMagnitude = toOther.SqrMagnitude;
if (sqrMagnitude <= Fix64.Zero)
{
continue;
}
if (sqrMagnitude >= config.halfRange * config.halfRange)
{
continue;
}
var forceGravity = (config.g * particle->Mass * otherParticle->Mass) / sqrMagnitude;
particle->Velocity += toOther.Normalized * forceGravity * config.deltaTime;
}
}
private static void UpdateParticlePosition(Frame f, ulong e, Particle *particle, ECSConfig config)
{
particle->Position += particle->Velocity * config.deltaTime;
if (particle->Position.x > config.halfRange)
{
particle->Position = new FixVector2(particle->Position.x - config.halfRange * new Fix64(2),
particle->Position.y);
}
if (particle->Position.x < -config.halfRange)
{
particle->Position = new FixVector2(particle->Position.x + config.halfRange * new Fix64(2),
particle->Position.y);
}
if (particle->Position.y < -config.halfRange)
{
particle->Position = new FixVector2(particle->Position.x,
particle->Position.y + config.halfRange * new Fix64(2));
}
if (particle->Position.y > config.halfRange)
{
particle->Position = new FixVector2(particle->Position.x,
particle->Position.y - config.halfRange * new Fix64(2));
}
}
