//========================================
// Self-Define
//------------------------------
//----------------------
// Public Functions
//----------------------
// Protected Functions
//----------------------
// Private Functions
/// <summary>
/// Do the screen scroll algorithm.
/// </summary>
private void DoScreenScroll()
{
if (!mScreenScroll)
{
return;
}
// get mouse position range from 0 to 1
Vector2 mouse01 = JCS_Input.MousePosition0To1();
// get the 4 bounds.
float rightBound = 1 - mScrollScreenRange;
float leftBound = mScrollScreenRange;
float topBound = 1 - mScrollScreenRange;
float botBound = mScrollScreenRange;
//-- check x direction. --//
if (mouse01.x <= leftBound) // left bound check
{
// if the mouse pos reach the left bound
// minus the velocity so it will go left.
mVelocity.x = -mScrollScreenSpeed;
}
else if (mouse01.x >= rightBound) // right bound check
{
// if the mouse pos reach the right bound
// plus the velocity so it will go right.
mVelocity.x = mScrollScreenSpeed;
}
else
{
// else apply zero, so it wont move.
mVelocity.x = 0;
}
//-- check y direction. --//
if (mouse01.y <= botBound) // bot bound check
{
if (mScrollDepth)
{
// if the mouse pos reach the bottom bound
// minus the velocity so it will go backward.
mVelocity.z = -mScrollScreenSpeed;
}
else
{
// if the mouse pos reach the bottom bound
// minus the velocity so it will go down.
mVelocity.y = mScrollScreenSpeed;
}
}
else if (mouse01.y >= topBound) // top bound check
{
if (mScrollDepth)
{
// if the mouse pos reach the top bound
// plus the velocity so it will go forward.
mVelocity.z = mScrollScreenSpeed;
}
else
{
// if the mouse pos reach the top bound
// plus the velocity so it will go top.
mVelocity.y = mScrollScreenSpeed;
}
}
else
{
// else apply zero, so it wont move.
mVelocity.z = 0;
}
}
