/// <summary>
/// Tells the skill user to start using the given <paramref name="skill"/>. This is more of a suggestion than a
/// request since the skill user does not actually have to start casting the skill. If this skill user decides
/// to use the skill, the CurrentCastingSkill must be set to the <paramref name="skill"/>.
/// </summary>
/// <param name="skill">The skill to be used.</param>
/// <param name="target">The optional character to use the skill on. Can be null.</param>
/// <returns>True if the <paramref name="skill"/> started being casted; otherwise false. This does not indicate
/// whether or not the skill was or will be successfully used, just that it was attempted to be used. Common
/// times this will return false is if there is a skill already being casted, or if the skill that was
/// attempted to be used still needs to cool down.</returns>
public bool TryStartCastingSkill(ISkill <SkillType, StatType, Character> skill, Character target)
{
if (!_character.IsAlive)
{
return(false);
}
// Check that the character knows the skill
if (!_character.KnownSkills.Knows(skill.SkillType))
{
return(false);
}
// Don't interrupt a skill that the character is already casting
if (IsCastingSkill)
{
return(false);
}
// Check that the group is available for usage
if (_cooldownManager.IsCoolingDown(skill.CooldownGroup, _character.GetTime()))
{
return(false);
}
// Only allow immediate-usage skills when moving
if (_character.Velocity != Vector2.Zero && skill.CastingTime > 0)
{
return(false);
}
if (skill.CastingTime == 0)
{
// The skill to use has no usage delay, so use it immediately
UseSkill(skill, target, true);
}
else
{
// The skill does have a delay, so queue it for usage
_currentCastingSkill = skill;
_castingSkillTarget = target;
var castingTime = skill.CastingTime;
_castingSkillUsageTime = _character.GetTime() + castingTime;
// Tell the character the details about the skill they are casting
if (_character is INetworkSender)
{
using (var pw = ServerPacket.SkillStartCasting_ToUser(skill.SkillType, castingTime))
{
((INetworkSender)_character).Send(pw, ServerMessageType.GUIUserStatus);
}
}
// Tell the users on the map that the character is casting
using (var pw = ServerPacket.SkillStartCasting_ToMap(_character.MapEntityIndex, skill.SkillType))
{
_character.Map.Send(pw, ServerMessageType.MapDynamicEntityProperty);
}
}
return(true);
}