bool TestPositionAgainDiagonalWalls(Map _theMap, int minX, int minY, int maxX, int maxY, ref bool environmentCollision, ref Point2 newPos)
{
bool collidedOnDiagonal = false;
Point2 result = new Point2();
Point2 slideBlockCentre = new Point2();
Point2 localNewPos = new Point2(newPos);
bool localEnvironmentCollision = environmentCollision;
for (int y = minY; y < maxY; y++)
{
for (int x = minX; x < maxX; x++)
{
if (x >= _theMap.getWidth() / _theMap.getTileWidth() &&
y >= _theMap.getHeight() / _theMap.getTileHeight())
{
continue;
}
TileType tileType = _theMap.getMapTileType(x, y);
Point2 pixel = new Point2(
x * _theMap.getTileWidth(),
y * _theMap.getTileHeight());
int pixelCenX = pixel.X + _theMap.getTileWidth() / 2;
int pixelCenY = pixel.Y + _theMap.getTileHeight() / 2;
m_boundingTileCircle.Center = new Vector3(pixelCenX, pixelCenY, 0);
m_boundingTileCircle.Radius = _theMap.getTileWidth() / 2;
if (Map.isTileTypeDiagonalWall(tileType) && _theMap.isTileTypePixelCollision(tileType))
{
TileType pixelCheckType = _theMap.GetTileTypePixelCollision(tileType);
Point2 topLeft = new Point2(
localNewPos.X - m_tileSet.getTileWidth() / 2,
localNewPos.Y - m_tileSet.getTileHeight() / 2);
bool localIntersects = m_tileSet.checkForCollision(_theMap.getTileSet(), m_frameIndexCollision, topLeft, (int)pixelCheckType, pixel);
if (localIntersects)
{
if (Map.isTileTypeDiagonalWall(tileType))
{
if (localEnvironmentCollision || collidedOnDiagonal)
{
localNewPos = new Point2(m_position);
}
else
{
if (GetSlidePositionOffDiagonalBlock(tileType, m_position, localNewPos, ref result, pixel))
{
localNewPos = new Point2(result);
}
else
{
slideBlockCentre = new Point2(pixelCenX, pixelCenY);
GetSlidePositionOffBlock(m_position, localNewPos, slideBlockCentre, _theMap.getTileWidth(), m_characterRadius, ref localNewPos);
}
collidedOnDiagonal = true;
}
localEnvironmentCollision = true;
}
}
} // if diagonal wall
} // for loop
} // for loop
environmentCollision = localEnvironmentCollision;
newPos.X = localNewPos.X;
newPos.Y = localNewPos.Y;
return collidedOnDiagonal;
}
public bool movePosition(float frameTime, Map _theMap, Character[] _characterArray, bool slideAgainstWalls, bool canUseSlides)
{
bool movingOnSlide = false;
bool slideAgainstDiagonalWalls = slideAgainstWalls && true;
bool environmentCollision = false;
// todo this shouldnt be assigned here each frame
m_characterRadius = m_tileSet.getTileWidth() / 2 * 8 / 10;
Point2 change = new Point2();
int tileIndexX = m_position.X / _theMap.getTileWidth();
int tileIndexY = m_position.Y / _theMap.getTileHeight();
TileType tileTypeStoodOn = _theMap.getMapTileType(tileIndexX, tileIndexY);
Boolean onSlide = Map.isTileTypeSlide(tileTypeStoodOn) && canUseSlides;
int SLIDE_EXIT_LENGTH = 10;
// If not sliding (on slide exit) then allow movement
if (!onSlide)
{
float moveSpeed = m_moveSpeedPerSecond * frameTime;
float cos = (float)Math.Cos(m_rotation);
float sin = (float)Math.Sin(m_rotation);
change.X = (int)( sin * moveSpeed);
change.Y = (int)(-cos * moveSpeed);
}
Point2 newPos = new Point2();
// Velocity is only for slide movement
if (m_velocity.Length() > MAX_VELOCITY)
{
m_velocity.Normalize();
m_velocity *= MAX_VELOCITY;
}
change.X += (int)(m_velocity.X * frameTime);
newPos.X = m_position.X + change.X;
change.Y += (int)(m_velocity.Y * frameTime);
newPos.Y = m_position.Y + change.Y;
if (Map.isTileTypeSlide(tileTypeStoodOn) && canUseSlides)
{
Vector2 targetPoint = new Vector2();
Vector2 charPoint = new Vector2(m_position.X, m_position.Y);
targetPoint.X = tileIndexX * _theMap.getTileWidth() + m_tileSet.getTileWidth() / 2;
targetPoint.Y = tileIndexY * _theMap.getTileHeight() + m_tileSet.getTileHeight() / 2;
if (tileTypeStoodOn == TileType.SLIDE_DOWN)
{
targetPoint.Y += m_tileSet.getTileHeight();
}
else if (tileTypeStoodOn == TileType.SLIDE_UP)
{
targetPoint.Y -= m_tileSet.getTileHeight();
}
else if (tileTypeStoodOn == TileType.SLIDE_LEFT)
{
targetPoint.X -= m_tileSet.getTileWidth();
}
else if (tileTypeStoodOn == TileType.SLIDE_RIGHT)
{
targetPoint.X += m_tileSet.getTileWidth();
}
Vector2 vector = targetPoint - charPoint;
// Its important this is high to keep the player in the center of the slide
// So they dont come out off-center and get stuck in collision
const float VELOCITY_INCREASE = 200.0f;
m_velocity += vector * VELOCITY_INCREASE * frameTime;
movingOnSlide = true;
}
else if (m_velocity.Length() > 0)
{
// dubious code to reduce velocity
m_velocity *= (25 * frameTime);
change.X += (int)(m_velocity.X * frameTime);
change.Y += (int)(m_velocity.Y * frameTime);
newPos.X = m_position.X + change.X;
newPos.Y = m_position.Y + change.Y;
if (m_velocity.Length() < SLIDE_EXIT_LENGTH)
{
m_velocity.X = 0;
m_velocity.Y = 0;
stopMovement();
}
}
else
{
newPos.X = m_position.X + change.X;
newPos.Y = m_position.Y + change.Y;
}
Point2 lastPos = new Point2(newPos);
// check per tile here
if (Map.isTileTypeSlide(tileTypeStoodOn) == false && BuildConstants.COLLISION_OFF == false)// && onSlide == false)// && m_teleporting == false)
{
// Check against the very boundarys of the map
newPos.X = capValue(newPos.X, m_characterRadius, _theMap.getWidth() - m_characterRadius);
newPos.Y = capValue(newPos.Y, m_characterRadius, _theMap.getHeight() - m_characterRadius);
if (lastPos.X != newPos.X || lastPos.Y != newPos.Y)
{
environmentCollision = true;
}
int minX = capValue(tileIndexX - 1, 0, _theMap.getWidth() / _theMap.getTileWidth());
int maxX = capValue(tileIndexX + 2, 0, _theMap.getWidth() / _theMap.getTileWidth());
int minY = capValue(tileIndexY - 1, 0, _theMap.getHeight() / _theMap.getTileHeight());
int maxY = capValue(tileIndexY + 2, 0, _theMap.getHeight() / _theMap.getTileHeight());
m_boundingCharCircle.Center = new Vector3(newPos.X, newPos.Y, 0);
m_boundingCharCircle.Radius = m_characterRadius;
for (int y = minY; y < maxY; y++)
{
for (int x = minX; x < maxX; x++)
{
if (x >= _theMap.getWidth() / _theMap.getTileWidth() &&
y >= _theMap.getHeight() / _theMap.getTileHeight())
{
continue;
}
TileType tileType = _theMap.getMapTileType(x, y);
Point2 pixel = new Point2(
x * _theMap.getTileWidth(),
y * _theMap.getTileHeight());
bool intersects = false;
int pixelCenX = pixel.X + _theMap.getTileWidth() / 2;
int pixelCenY = pixel.Y + _theMap.getTileHeight() / 2;
m_boundingTileCircle.Center = new Vector3(pixelCenX, pixelCenY, 0);
m_boundingTileCircle.Radius = _theMap.getTileWidth() / 2;
if (Map.isTileTypeSquareBlock(tileType, m_frameIndexRendering) || (canUseSlides == false && Map.isTileTypeSlide(tileType)))
{
m_boundingTileBox = BoundingBox.CreateFromSphere(m_boundingTileCircle);
bool localIntersects = m_boundingCharCircle.Intersects(m_boundingTileBox);
if(localIntersects)
{
if (slideAgainstWalls)
{
if (GetSlidePositionOffBlock(m_position, newPos, new Point2(pixelCenX, pixelCenY), _theMap.getTileWidth(), m_characterRadius, ref newPos))
{
environmentCollision = true;
}
}
else
{
intersects = true;
}
}
}
else if (Map.isTileTypeCircle(tileType))
{
intersects = m_boundingCharCircle.Intersects(m_boundingTileCircle);
}
else if (_theMap.isTileTypePixelCollision(tileType))
{
TileType pixelCheckType = _theMap.GetTileTypePixelCollision(tileType);
Point2 topLeft = new Point2(
newPos.X - m_tileSet.getTileWidth() / 2,
newPos.Y - m_tileSet.getTileHeight() / 2);
bool localIntersects = m_tileSet.checkForCollision(_theMap.getTileSet(), m_frameIndexCollision, topLeft, (int)pixelCheckType, pixel);
if (localIntersects && (!Map.isTileTypeDiagonalWall(tileType) || slideAgainstDiagonalWalls == false))
{
intersects = localIntersects;
}
}
if (intersects)
{
environmentCollision = true;
newPos = new Point2(m_position);
}
}
}
// 2nd pass for diagonal walls
if (slideAgainstDiagonalWalls)
{
TestPositionAgainDiagonalWalls(_theMap, minX, minY, maxX, maxY, ref environmentCollision, ref newPos);
}
m_boundingCharCircle.Center = new Vector3(newPos.X, newPos.Y, 0);
m_boundingCharCircle.Radius = m_characterRadius;
if (_characterArray != null)
{
// Check against other characters
for (int c = 0; c < _characterArray.Length; c++)
{
if (_characterArray[c] == this || _characterArray[c].m_health <= 0 || _characterArray[c].m_finishedLevel)
{
continue;
}
BoundingSphere otherCharBounding = new BoundingSphere();
otherCharBounding.Center = new
Vector3(_characterArray[c].m_position.X, _characterArray[c].m_position.Y, 0);
otherCharBounding.Radius = m_characterRadius;
if (m_boundingCharCircle.Intersects(otherCharBounding))
{
if (m_frameIndexRendering == (int)CharacterTile.BADDY)
{
_characterArray[c].applyDamageDrain(frameTime, GameConstants.baddyDrainAmountPerSec);
continue;
}
// characters are facing each other
// This means if characters do occupy the same space (via resurrection or teleport) then they can still move appart
else if (IsFacing(_characterArray[c]))
{
newPos = new Point2(m_position);
}
}
}
}
}
if (slideAgainstWalls)
{
m_position.X = newPos.X;
m_position.Y = newPos.Y;
}
else
{
int realChangeX = newPos.X - m_position.X;
int percentageX = 100;
// This will let user get stuck on things instead of just sliding around
if (change.X * change.X > realChangeX * realChangeX)
{
percentageX = 100 * realChangeX / change.X;
}
int realChangeY = newPos.Y - m_position.Y;
int percentageY = 100;
// This will let user get stuck on things instead of just sliding around
if (change.Y * change.Y > realChangeY * realChangeY)
{
percentageY = 100 * realChangeY / change.Y;
}
int lowestPercentage = percentageX < percentageY ? percentageX : percentageY;
// Calculate final position
m_position.X += change.X * lowestPercentage / 100;
m_position.Y += change.Y * lowestPercentage / 100;
}
SetMovingOnSlideState(movingOnSlide);
return environmentCollision;
}