MythoLogic Interactive Forums

Posted: **Sat Jul 27, 2019 10:37 pm**

Scripting 11 - Listening on object creation, damage and termination

Scripting in SFD assumes you have a fair knowledge of C#.

The following code demonstrates how to listen on objects being created, damaged and terminated in v.1.3.0.

Code: Select all

// Example script to listen on objects created, damaged and terminated.
public void OnStartup()
{
	Events.ObjectCreatedCallback.Start(OnObjectCreated);
	Events.ObjectDamageCallback.Start(OnObjectDamage);
	Events.ObjectTerminatedCallback.Start(OnObjectTerminated);

}

public void OnObjectCreated(IObject[] objs) {
	foreach(IObject obj in objs) {
		Game.WriteToConsole(string.Format("Object {0} ({1}) created", obj.UniqueID, obj.Name));
	}
}


public void OnObjectDamage(IObject obj, ObjectDamageArgs args) {
	// object took damage
	if (args.DamageType != ObjectDamageType.Fire) {
		if (args.SourceID != 0) {
			Game.WriteToConsole(string.Format("Object {0} took {1} {2} damage from {3} {4}", obj.UniqueID, args.Damage, args.DamageType, (args.IsPlayer ? "player" : "object"), args.SourceID));
		} else {
			Game.WriteToConsole(string.Format("Object {0} took {1} {2} damage", obj.UniqueID, args.Damage, args.DamageType));
		}
	}
}

public void OnObjectTerminated(IObject[] objs) {
	// objects terminated. Note: This is run just before the object is about to be destroyed or removed. To see if it was destroyed, check the IObject.DestructionInitiated property.
	foreach(IObject obj in objs) {
		Game.WriteToConsole(string.Format("Object {0} was {1}", obj.UniqueID, (obj.DestructionInitiated ? "destroyed" : "removed")));
	}
 }

ScriptAPI Implementation for ObjectDamageCallback

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Code: Select all

	/// <summary>
    /// ObjectDamageCallback.Event arguments
    /// </summary>
    [Serializable()]
    public struct ObjectDamageArgs
    {
        /// <summary>
        /// Gets the damage type.
        /// </summary>
        public readonly ObjectDamageType DamageType;

        /// <summary>
        /// Gets the damage amount.
        /// </summary>
        public readonly float Damage;

        /// <summary>
        /// Gets if the sourceID refers to a player. True when DamageType is Player or PlayerImpact.
        /// </summary>
        public readonly bool IsPlayer;

        /// <summary>
        /// Gets the sourceID causing the damage. <para/>
        /// if DamageType is ObjectDamageType.Projectile Use Game.GetProjectile(args.SourceID) to get the projectile.  <para/>
        /// if DamageType is ObjectDamageType.Player|PlayerImpact Use Game.GetPlayer(args.SourceID) to get the player.  <para/>
        /// if DamageType is ObjectDamageType.Impact Use Game.GetObject(args.SourceID) to get the object.  <para/>
        /// if DamageType is ObjectDamageType.Explosion the args.SourceID refers to the explosion InstanceID.  <para/>
        /// </summary>
        public readonly int SourceID;
    }

    /// <summary>
    /// ObjectDamageType
    /// </summary>
    public enum ObjectDamageType
    {
        /// <summary>
        /// 0, Impact. Caused by the object colliding against another object.
        /// </summary>
        Impact = 0,

        /// <summary>
        /// 1, PlayerImpact. Caused by players falling onto the object.
        /// </summary>
        PlayerImpact = 1,

        /// <summary>
        /// 2, Player. Caused by player melee actions damaging the object.
        /// </summary>
        Player = 2,

        /// <summary>
        /// 3, Projectile. Caused by projectiles damaging the object.
        /// </summary>
        Projectile = 3,

        /// <summary>
        /// 4, Explosion. Caused by explosion damaging the object.
        /// </summary>
        Explosion = 4,

        /// <summary>
        /// 5, Fire. Cause by fire damaging the object.
        /// </summary>
        Fire = 5
    }