//垂直碰撞检测：原理同上
public static TerrainCollisionData VerticalCollision(Room room, TerrainCollisionData cd)
{
IntVector2 lastTile = room.GetTilePosition(cd.lastPos);
int count = 0;
//速度大于0：向上移动
if (cd.vel.y > 0.0)
{
int y1 = room.GetTilePosition(new Vector2(0.0f, (float)(cd.pos.y + (double)cd.rad))).y;
int y2 = room.GetTilePosition(new Vector2(0.0f, cd.lastPos.y + cd.rad)).y;
int x1 = room.GetTilePosition(new Vector2((float)(cd.pos.x - (double)cd.rad + 1.0), 0.0f)).x;
int x2 = room.GetTilePosition(new Vector2((float)(cd.pos.x + (double)cd.rad - 1.0), 0.0f)).x;
bool @checked = false;
for (int y = y2; y <= y1 && !@checked; ++y)
{
for (int x = x1; x <= x2 && !@checked; ++x)
{
if (room.GetTile(x, y).Terrain == Room.Tile.TerrainType.Solid && room.GetTile(x, y - 1).Terrain != Room.Tile.TerrainType.Solid && (lastTile.y < y || room.GetTile(cd.lastPos).Terrain == Room.Tile.TerrainType.Solid))
{
cd.pos.y = y * 20f - cd.rad;
cd.vel.y = 0.0f;
cd.contactPoint.y = 1;
@checked = true;
}
++count;
if (count > MaxRepeats)
{
Debug.Log("!!!!! sharedphysics emergency breakout of terrain check!");
@checked = true;
}
}
}
}
//速度小于0：向下移动
else if (cd.vel.y < 0.0)
{
int y1 = room.GetTilePosition(new Vector2(0.0f, (float)(cd.pos.y - (double)cd.rad))).y;
int y2 = room.GetTilePosition(new Vector2(0.0f, cd.lastPos.y - cd.rad)).y;
int x1 = room.GetTilePosition(new Vector2((float)(cd.pos.x - (double)cd.rad + 1.0), 0.0f)).x;
int x2 = room.GetTilePosition(new Vector2((float)(cd.pos.x + (double)cd.rad - 1.0), 0.0f)).x;
bool @checked = false;
for (int y = y2; y >= y1 && !@checked; --y)
{
for (int x = x1; x <= x2 && !@checked; ++x)
{
if (SolidFloor(room, x, y, cd.goThroughFloors, cd.lastPos) && !SolidFloor(room, x, y + 1, cd.goThroughFloors, cd.lastPos) && (lastTile.y > y || room.GetTile(cd.lastPos).Terrain == Room.Tile.TerrainType.Solid))
{
cd.pos.y = (float)((y + 1.0) * 20.0) + cd.rad;
cd.vel.y = 0.0f;
cd.contactPoint.y = -1;
@checked = true;
}
++count;
if (count > MaxRepeats)
{
Debug.Log("!!!!! sharedphysics emergency breakout of terrain check!");
@checked = true;
}
}
}
}
return(cd);
}
public static TerrainCollisionData SlopesVertically(Room room, TerrainCollisionData cd)
{
IntVector2 tilePos = room.GetTilePosition(cd.pos);
IntVector2 intVec = new IntVector2(0, 0);
Room.SlopeDirection slopeDir = room.IdentifySlope(cd.pos);
//如果目标地形不是Slope
if (room.GetTile(cd.pos).Terrain != Room.Tile.TerrainType.Slope)
{
//左边Tile斜坡类型不是Broken && 碰撞体与左边Tile发生碰撞：（碰撞体Center - 碰撞半径).X < 当前Tile边界Pos.X
if (room.IdentifySlope(tilePos.x - 1, tilePos.y) != Room.SlopeDirection.Broken && cd.pos.x - (double)cd.rad <= room.MiddleOfTile(cd.pos).x - 10.0)
{
slopeDir = room.IdentifySlope(tilePos.x - 1, tilePos.y);
intVec.x = -1;
}
//右边检测同上
else if (room.IdentifySlope(tilePos.x + 1, tilePos.y) != Room.SlopeDirection.Broken && cd.pos.x + (double)cd.rad >= room.MiddleOfTile(cd.pos).x + 10.0)
{
slopeDir = room.IdentifySlope(tilePos.x + 1, tilePos.y);
intVec.x = 1;
}
//下边检测同上
else if (cd.pos.y - (double)cd.rad < room.MiddleOfTile(cd.pos).y - 10.0 && room.IdentifySlope(tilePos.x, tilePos.y - 1) != Room.SlopeDirection.Broken)
{
slopeDir = room.IdentifySlope(tilePos.x, tilePos.y - 1);
intVec.y = -1;
}
//上边检测同上
else if (cd.pos.y + (double)cd.rad > room.MiddleOfTile(cd.pos).y + 10.0 && room.IdentifySlope(tilePos.x, tilePos.y + 1) != Room.SlopeDirection.Broken)
{
slopeDir = room.IdentifySlope(tilePos.x, tilePos.y + 1);
intVec.y = 1;
}
}
//如果斜坡类型不是损坏类型
if (slopeDir != Room.SlopeDirection.Broken)
{
//得到碰撞的tile
Vector2 tile = room.MiddleOfTile(room.GetTilePosition(cd.pos) + intVec);
float dist;
int sign;
switch (slopeDir)
{
//上左、上右斜坡，碰撞由上到下
case Room.SlopeDirection.UpLeft:
dist = (float)(cd.pos.x - (tile.x - 10.0) + (tile.y - 10.0));
sign = -1;
break;
case Room.SlopeDirection.UpRight:
dist = (float)(20.0 - (cd.pos.x - (tile.x - 10.0)) + (tile.y - 10.0));
sign = -1;
break;
case Room.SlopeDirection.DownLeft:
dist = (float)(20.0 - (cd.pos.x - (tile.x - 10.0)) + (tile.y - 10.0));
sign = 1;
break;
default:
dist = (float)(cd.pos.x - (tile.x - 10.0) + (tile.y - 10.0));
sign = 1;
break;
}
if (sign == -1 && cd.pos.y <= dist + (double)cd.rad + cd.rad)
{
cd.pos.y = dist + cd.rad + cd.rad;
}
else if (sign == 1 && cd.pos.y >= dist - (double)cd.rad - cd.rad)
{
cd.pos.y = dist - cd.rad - cd.rad;
}
}
return(cd);
}
//水平碰撞检测
public static TerrainCollisionData HorizontalCollision(Room room, TerrainCollisionData cd)
{
//获取前一帧Tile位置
IntVector2 lastTile = room.GetTilePosition(cd.lastPos);
int count = 0;
//速度大于零：向右移动
if (cd.vel.x > 0.0)
{
//获取当前帧、前一帧（位置+半径）的Tile信息
int x1 = room.GetTilePosition(new Vector2(cd.pos.x + cd.rad, 0.0f)).x;
int x2 = room.GetTilePosition(new Vector2(cd.lastPos.x + cd.rad, 0.0f)).x;
int y1 = room.GetTilePosition(new Vector2(0.0f, (float)(cd.pos.y + (double)cd.rad - 1.0))).y;
int y2 = room.GetTilePosition(new Vector2(0.0f, (float)(cd.pos.y - (double)cd.rad + 1.0))).y;
bool @checked = false;
//从左到右、从上到下遍历地形
for (int x = x2; x <= x1 && !@checked; ++x)
{
for (int y = y2; y <= y1 && !@checked; ++y)
{
if (room.GetTile(x, y).Terrain == Room.Tile.TerrainType.Solid &&
room.GetTile(x - 1, y).Terrain != Room.Tile.TerrainType.Solid &&
(lastTile.x < x || room.GetTile(cd.lastPos).Terrain == Room.Tile.TerrainType.Solid))
{
//修改碰撞数据
cd.pos.x = x * 20f - cd.rad;
cd.vel.x = 0.0f;
cd.contactPoint.x = 1;
@checked = true;
}
//碰撞次数阈值检测
++count;
if (count > MaxRepeats)
{
Debug.Log("!!!!! sharedphysics emergency breakout of terrain check!");
@checked = true;
}
}
}
}
//速度小于零：向左移动 ： 检测方式同上
else if (cd.vel.x < 0.0)
{
int x1 = room.GetTilePosition(new Vector2(cd.pos.x - cd.rad, 0.0f)).x;
int x2 = room.GetTilePosition(new Vector2(cd.lastPos.x - cd.rad, 0.0f)).x;
int y1 = room.GetTilePosition(new Vector2(0.0f, (float)(cd.pos.y + cd.rad - 1.0))).y;
int y2 = room.GetTilePosition(new Vector2(0.0f, (float)(cd.pos.y - cd.rad + 1.0))).y;
bool @checked = false;
for (int x = x2; x >= x1 && !@checked; --x)
{
for (int y = y2; y <= y1 && !@checked; ++y)
{
if (room.GetTile(x, y).Terrain == Room.Tile.TerrainType.Solid && room.GetTile(x + 1, y).Terrain != Room.Tile.TerrainType.Solid && (lastTile.x > x || room.GetTile(cd.lastPos).Terrain == Room.Tile.TerrainType.Solid))
{
cd.pos.x = (float)((x + 1.0) * 20.0) + cd.rad;
cd.vel.x = 0.0f;
cd.contactPoint.x = -1;
@checked = true;
}
++count;
if (count > MaxRepeats)
{
Debug.Log("!!!!! sharedphysics emergency breakout of terrain check!");
@checked = true;
}
}
}
}
return(cd);
}
