//附着在地形上
private void StickToTerrain(Tentacle.TentacleChunk chunk)
{
//如果有抓取目标点 && 当前Chunk与目标点距离大于200
if (this.floatGrabDest.HasValue && !Utils.DistLess(chunk.pos, this.floatGrabDest.Value, 200f))
{
return;
}
//Sign：返回正负号
int sign = (int)Mathf.Sign(chunk.pos.x - this.room.MiddleOfTile(chunk.pos).x);
Vector2 contact = new Vector2(0.0f, 0.0f);
IntVector2 tilePos = this.room.GetTilePosition(chunk.pos);
//遍历8方向
for (int index = 0; index < 8; ++index)
{
//目标方向Tile是Solid地形
if (this.room.GetTile(tilePos + new IntVector2(Utils.eightDirectionsDiagonalsLast[index].x * sign, Utils.eightDirectionsDiagonalsLast[index].y)).Solid)
{
if (Utils.eightDirectionsDiagonalsLast[index].x != 0)
{
contact.x = this.room.MiddleOfTile(chunk.pos).x + Utils.eightDirectionsDiagonalsLast[index].x * sign * (20f - chunk.rad);
}
if (Utils.eightDirectionsDiagonalsLast[index].y != 0)
{
contact.y = this.room.MiddleOfTile(chunk.pos).y + Utils.eightDirectionsDiagonalsLast[index].y * (20f - chunk.rad);
break;
}
break;
}
}
if (contact.x == 0.0 && this.room.GetTile(chunk.pos).verticalBeam)
{
contact.x = this.room.MiddleOfTile(chunk.pos).x;
}
if (contact.y == 0.0 && this.room.GetTile(chunk.pos).horizontalBeam)
{
contact.y = this.room.MiddleOfTile(chunk.pos).y;
}
//未处于相同X轴
if (contact.x != 0.0)
{
chunk.vel.x += (float)((contact.x - (double)chunk.pos.x) * 0.1f);
chunk.vel.y *= 0.9f;
}
//未处于相同Y轴
if (contact.y != 0.0)
{
chunk.vel.y += (float)((contact.y - (double)chunk.pos.y) * 0.1f);
chunk.vel.x *= 0.9f;
}
//触手抓取比例增加
if (contact.x != 0.0 || contact.y != 0.0)
{
this.chunksGripping += 1f / tChunks.Length;
}
}
public WalkerBeastTentacle(WalkerBeast walkerBeast, BodyChunk chunk, float length, int tentacleNumber) : base(walkerBeast, chunk, length)
{
setGrabDelay = 8;
this.tentacleNumber = tentacleNumber;
tProps = new Tentacle.TentacleProps(false, false, true, 0.5f, 0f, 0.6f, 0.8f, 1.04f, 1.2f, 10f, 1f, 5f, 15, 60, 12, 0);
tChunks = new Tentacle.TentacleChunk[4];
for (int i = 0; i < tChunks.Length; i++)
{
tChunks[i] = new Tentacle.TentacleChunk(this, i, (float)(i + 1) / (float)tChunks.Length, 4f);
}
side = ((tentacleNumber % 2 != 0) ? 1 : 0);
pair = ((tentacleNumber >= 2) ? 1 : 0);
tentacleDir = Custom.DegToVec(45f + 90f * (float)tentacleNumber);
stretchAndSqueeze = 0.1f;
debugViz = false;
}
public override void Update()
{
base.Update();
smoothedFootingSecurity = Mathf.Lerp(smoothedFootingSecurity, (!attachedAtTip) ? Mathf.InverseLerp(3f, 30f, (float)sureOfFootingCounter) : 0f, 0.2f);
attachedAtTip = false;
maxLength = 25f * walkerBeast.preferredHeight * 1.33333337f;
idealLength = Mathf.Min(Mathf.Lerp(idealLength, (grabDest == null) ? maxLength : (Vector2.Distance(FloatBase, floatGrabDest.Value) * 1.5f * Mathf.InverseLerp((float)setGrabDelay, 0f, (float)grabDelay)), 0.03f), maxLength);
retractFac = 0f;
limp = !walkerBeast.Consious;
if (limp)
{
floatGrabDest = null;
for (int i = 0; i < tChunks.Length; i++)
{
tChunks[i].vel *= 0.9f;
Tentacle.TentacleChunk tentacleChunk = tChunks[i];
tentacleChunk.vel.y = tentacleChunk.vel.y - 0.5f;
}
}
for (int j = 0; j < tChunks.Length; j++)
{
tChunks[j].rad = 5f;
float num = (float)j / (float)(tChunks.Length - 1);
tChunks[j].vel *= 0.5f;
if (backtrackFrom == -1 || j < backtrackFrom)
{
if (j < tChunks.Length - 1)
{
tChunks[j].vel += walkerBeast.HeadDir * Mathf.Lerp(-1f, 1f, num) * Mathf.Pow(1f - num, 1.8f);
}
tChunks[j].vel += walkerBeast.moveDirection * Mathf.Sin(smoothedFootingSecurity * 3.14159274f) * 1.5f * Mathf.Lerp(1f, 2.5f, Mathf.Sin(num * 3.14159274f));
}
tChunks[j].pos = Vector2.Lerp(tChunks[j].pos, room.MiddleOfTile(segments[tChunks[j].currentSegment]), 0.03f);
if (room.PointSubmerged(tChunks[j].pos))
{
tChunks[j].vel *= 0.5f;
}
}
if (backtrackFrom == -1)
{
tChunks[1].vel += walkerBeast.moveDirection;
}
if (backtrackFrom == -1 && grabDest != null)
{
Tip.vel += Custom.DirVec(Tip.pos, floatGrabDest.Value) * Mathf.Lerp(0.2f, 38f, smoothedFootingSecurity);
}
if (floatGrabDest != null && Custom.DistLess(Tip.pos, floatGrabDest.Value, 40f) && backtrackFrom == -1)
{
Tip.pos = floatGrabDest.Value;
Tip.vel *= 0f;
attachedAtTip = true;
}
Tip.collideWithTerrain = !attachedAtTip;
UpdateDesiredGrabPos();
for (int k = 0; k < tChunks.Length; k++)
{
Tentacle.TentacleChunk tentacleChunk2 = tChunks[k];
tentacleChunk2.vel.y = tentacleChunk2.vel.y - 0.1f;
tChunks[k].vel += connectedChunk.vel * 0.1f;
if (!attachedAtTip)
{
if (floatGrabDest != null)
{
tChunks[k].vel += Custom.DirVec(tChunks[k].pos, floatGrabDest.Value) * 0.3f;
}
else
{
tChunks[k].vel += Custom.DirVec(tChunks[k].pos, desiredGrabPos + Custom.DirVec(FloatBase, desiredGrabPos) * 70f) * 0.6f;
}
}
}
if (attachedAtTip)
{
framesWithoutReaching = 0;
if (SharedPhysics.RayTraceTilesForTerrain(room, BasePos, grabDest.Value))
{
if (!Custom.DistLess(Tip.pos, connectedChunk.pos, maxLength))
{
ReleaseGrip();
}
if (!Custom.DistLess(Tip.pos, connectedChunk.pos, maxLength * 0.9f))
{
walkerBeast.heldBackByLeg = true;
}
}
else
{
ReleaseGrip();
}
if (playStepSound)
{
if (stepSoundVol > 0.5f)
{
room.PlaySound(SoundID.Vulture_Tentacle_Grab_Terrain, Tip.pos, Mathf.InverseLerp(0.5f, 1f, stepSoundVol) * Mathf.InverseLerp(7f, 45f, Vector2.Distance(Tip.pos, Tip.lastPos)), 1f);
}
playStepSound = false;
}
stepSoundVol = 0f;
}
else
{
stepSoundVol = Mathf.Min(1f, stepSoundVol + 0.025f);
playStepSound = true;
FindGrabPos();
framesWithoutReaching++;
if ((float)framesWithoutReaching > 60f && floatGrabDest == null)
{
framesWithoutReaching = 0;
}
}
if (debugViz)
{
grabGoalSprites[1].pos = desiredGrabPos;
}
}
