public static ObjectAction DestroyWhenHpIsZeroAndMaybeDropPowerUp(
long chanceToDropPowerUpInMilliPercent, // ranges from 0 (meaning 0%) to 100,000 (meaning 100%)
Dictionary <string, DTDanmakuImage> spriteNameToImageDictionary,
Dictionary <string, EnemyObjectTemplate> enemyObjectTemplates,
Dictionary <string, DTDanmakuSound> soundNameToSoundDictionary,
GuidGenerator guidGenerator)
{
string soundEffectName = guidGenerator.NextGuid();
BooleanExpression isHpZero = BooleanExpression.LessThanOrEqualTo(
MathExpression.MilliHP(),
MathExpression.Constant(0));
ObjectAction playEnemyDeathSoundEffectAction = ObjectAction.PlaySoundEffect(soundEffectName: soundEffectName);
soundNameToSoundDictionary.Add(soundEffectName, DTDanmakuSound.EnemyDeath);
DestructionAnimationGenerator.GenerateDestructionAnimationResult generateDestructionAnimationResult = DestructionAnimationGenerator.GenerateDestructionAnimation(
orderedSprites: new List <DTDanmakuImage>
{
DTDanmakuImage.Explosion1,
DTDanmakuImage.Explosion2,
DTDanmakuImage.Explosion3,
DTDanmakuImage.Explosion4,
DTDanmakuImage.Explosion5,
DTDanmakuImage.Explosion6,
DTDanmakuImage.Explosion7,
DTDanmakuImage.Explosion8,
DTDanmakuImage.Explosion9
},
millisecondsPerSprite: 20,
guidGenerator: guidGenerator);
foreach (var entry in generateDestructionAnimationResult.spriteNameToImageDictionary)
{
spriteNameToImageDictionary.Add(entry.Key, entry.Value);
}
foreach (var entry in generateDestructionAnimationResult.enemyObjectTemplates)
{
enemyObjectTemplates.Add(entry.Key, entry.Value);
}
ObjectAction possiblySpawnPowerUpAction = ObjectAction.Condition(
condition: BooleanExpression.LessThan(
MathExpression.RandomInteger(MathExpression.Constant(100 * 1000)),
MathExpression.Constant(chanceToDropPowerUpInMilliPercent)),
action: ObjectAction.SpawnPowerUp());
return(ObjectAction.Condition(
condition: isHpZero,
action: ObjectAction.Union(
playEnemyDeathSoundEffectAction,
generateDestructionAnimationResult.objectAction,
possiblySpawnPowerUpAction,
ObjectAction.Destroy())));
}
