/// <summary>
/// 根据类型，生成一组怪物
/// </summary>
/// <param name="type"></param>
private void SpawnBotGroup(BotGroup.Type type)
{
float speed = spawnNextSpeed;
Vector3 spawnPos;
spawnPos = character.transform.position;
spawnPos.z += spawnPosOffect;
switch (spawnGroupTypeCurrent)
{
case BotGroup.Type.Slow:
{
speed = 1.0f;
}
break;
case BotGroup.Type.Normal:
{
speed = spawnNextSpeed;
}
break;
}
BotGroup botGroup = GameObject.Instantiate <BotGroup>(botGroupPrefab);
//怪物组生成的Y轴位置处于自身碰撞盒范围的一半
var extents = botGroup.GetComponent <Collider>().bounds.extents;
spawnPos.y = extents.y / 2;
botGroup.transform.position = spawnPos;
//怪物组生成内部怪物
botGroup.SpawnBot(spawnBotNum);
botGroup.runSpeed = speed;
}
public void UpdateNextGroupType()
{
//还有要生成的正常怪物时，先生成正常怪物
if (spawnNormalCount > 0)
{
float rate;
//用于计算10个以内的怪物加速
rate = (float)botGroupCount / 10.0f;
rate = Mathf.Clamp01(rate);
//砍杀的怪物越多，下一批怪物的速度也越快，
//通过rate，来在最大和最小速度间插值，使得下一波的速度，与当前击杀怪物数量成正比
spawnNextSpeed = Mathf.Lerp(spawnNextSpeedMin, spawnNextSpeedMax, rate);
//砍杀的怪物越多，下一批怪物的来的也会越快，
//通过rate，来在最大和最小位置偏移中插值，使得下一波怪物到来的偏移位置，与当前击杀怪物数量成反比
spawnLineNextOffect = Mathf.Lerp(spawnLineNextOffectMax, spawnLineNextOffectMin, rate);
spawnNormalCount--;
if (spawnNormalCount <= 0)
{
//当普通型怪物都生成完后，随机一种增强型怪物
spawnGroupTypeNext = (BotGroup.Type)Random.Range(1, 1);
spawnIncreaseCount = 1;
}
return;
}
}
public void GameLoop()
{
//准备生成一波怪物组
if (!canSpawnNewGroup)
{
canSpawnNewGroup = true;
if (canSpawnNewGroup)
{
// 通过玩家的当前位置计算玩家触发生成怪物组的触发位置
if (spawnGroupTypeNext == BotGroup.Type.Normal)
{
spawnLine = character.transform.position.z + spawnLineNextOffect;
}
else if (spawnGroupTypeNext == BotGroup.Type.Slow)
{
spawnLine = character.transform.position.z + 50.0f;
}
}
}
////////////////////////////////////////////////////////////////
// 当玩家没有到达触发位置时，不生成任何怪物组
if (character.transform.position.z <= spawnLine)
{
return;
}
//实际开始生成怪物组
spawnGroupTypeCurrent = spawnGroupTypeNext;
SpawnBotGroup(spawnGroupTypeCurrent);
// 更新下次出现分组时的怪物数量
spawnBotNum++;
spawnBotNum = Mathf.Min(spawnBotNum, spawnBotNumMax);
botGroupCount++;
canSpawnNewGroup = false;
//刷新下波怪物组的类型
UpdateNextGroupType();
}
