private void SolveVert()
{
Vector2i posi = new Vector2i((int)Pos.X, (int)Pos.Y);
Vector2i vertDest = new Vector2i(posi.X, posi.Y + (int)Velocity.Y);
//if we're to move at all
if (vertDest.Y != posi.Y)
{
int direction = Math.Sign(vertDest.Y - posi.Y);
CollideTypes type = (SoftDrop || direction == -1) ? CollideTypes.Hard : CollideTypes.HardOrSoft;
bool hitSomething = true;
int y = posi.Y;
while (!dm.MapCollide(posi.X, y, type))
{
if (y == vertDest.Y)
{
hitSomething = false;
break;
}
y += direction;
}
if (hitSomething)
{
Velocity.Y = 0;
y -= direction;
}
Pos.Y = y;
}
}
private void UpdatePosition()
{
//increase velocity by gravity, up to a maximum
Velocity.Y += dm.gravity;
if (Velocity.Y > dm.gravity * 12)
{
Velocity.Y = dm.gravity * 12;
}
Speed = 2;
if (Input.isKeyDown(Keyboard.Key.LShift))
{
Speed = 3f;
}
//horizontal decay, up to a maximum
Velocity.X *= .75f;
Velocity.X = Helper.ClampSigned(Speed, Velocity.X);
//truncate tiny velocities
if (Math.Abs(Velocity.X) < 1)
{
Velocity.X = 0;
}
//determine whether we're dropping through platforms
CollideTypes type = SoftDrop ? CollideTypes.Hard : CollideTypes.HardOrSoft;
//we do the horizontal and vertical movements separately
SolveHoriz();
SolveVert();
}
private void UpdateOnGround()
{
Vector2i posi = new Vector2i((int)Pos.X, (int)Pos.Y);
Vector2i below = posi + new Vector2i(0, 1);
CollideTypes type = SoftDrop ? CollideTypes.Hard : CollideTypes.HardOrSoft;
OnGround = dm.MapCollide(below.X, below.Y, type);
//also set jumps. if just walked off a cliff, take away first jump
if (OnGround)
{
JumpsLeft = MaxJumps;
}
else if (JumpsLeft == MaxJumps)
{
JumpsLeft = MaxJumps - 1;
}
}
public bool MapCollide(int x, int y, CollideTypes types)
{
//check if OOB
if (x < 0 || x >= mapWidth || y < 0 || y >= mapHeight)
{
return(false);
}
int index = (y * mapWidth + x) * 4;
byte r = mapBytes[index];
byte g = mapBytes[index + 1];
byte b = mapBytes[index + 2];
byte a = mapBytes[index + 3];
//only collide if black or green
if (types.HasFlag(CollideTypes.Hard) && a == 255 && r == 0 && g == 0 && b == 0)
{
return(true);
}
if (types.HasFlag(CollideTypes.Soft) && a == 255 && r == 0 && g == 255 && b == 0)
{
return(true);
}
return(false);
}
public bool MapCollide(int x, int y, CollideTypes types)
{
//check if OOB
if (x < 0 || x >= mapWidth || y < 0 || y >= mapHeight)
{
return false;
}
int index = (y * mapWidth + x) * 4;
byte r = mapBytes[index];
byte g = mapBytes[index + 1];
byte b = mapBytes[index + 2];
byte a = mapBytes[index + 3];
//only collide if black or green
if (types.HasFlag(CollideTypes.Hard) && a == 255 && r == 0 && g == 0 && b == 0) return true;
if (types.HasFlag(CollideTypes.Soft) && a == 255 && r == 0 && g == 255 && b == 0) return true;
return false;
}
