/// <summary>
/// To do: Make this part more understandable;
/// Determines the screen coordinate that the destination arrow is set at
/// And store the value at a local variable
/// </summary>
/// <param name="direction">Calculate which direction?</param>
void intersection(CONSTANTS.DIRECTION direction)
{
screen_intersect.y = 5;
switch (direction)
{
case CONSTANTS.DIRECTION.UP://Top
float x = (destinPosition.x - thisPosition.x) * (heightCamViewBoundHalved) / (destinPosition.z - thisPosition.z) + thisPosition.x;
if (x >= leftCamViewBound && x <= rightCamViewBound)
{
screen_intersect.x = x;
screen_intersect.z = topCamViewBound;
}
break;
case CONSTANTS.DIRECTION.RIGHT://Right
float z = (destinPosition.z - thisPosition.z) * (widthCamViewBoundHalved) / (destinPosition.x - thisPosition.x) + thisPosition.z;
if (z >= lowerCamViewBound && z <= topCamViewBound)
{
screen_intersect.x = rightCamViewBound;
screen_intersect.z = z;
}
break;
case CONSTANTS.DIRECTION.DOWN://Bottom
x = (destinPosition.x - thisPosition.x) * (-heightCamViewBoundHalved) / (destinPosition.z - thisPosition.z) + thisPosition.x;
if (x >= leftCamViewBound && x <= rightCamViewBound)
{
screen_intersect.x = x;
screen_intersect.z = lowerCamViewBound;
}
break;
case CONSTANTS.DIRECTION.LEFT://Left
z = (destinPosition.z - thisPosition.z) * (-widthCamViewBoundHalved) / (destinPosition.x - thisPosition.x) + thisPosition.z;
if (z >= lowerCamViewBound && z <= topCamViewBound)
{
screen_intersect.x = leftCamViewBound;
screen_intersect.z = z;
}
break;
}
}
public void setEntranceDir(CONSTANTS.DIRECTION dir)
{
switch (dir)
{
case CONSTANTS.DIRECTION.UP:
entrance_direction = 90;
break;
case CONSTANTS.DIRECTION.DOWN:
entrance_direction = -90;
break;
case CONSTANTS.DIRECTION.RIGHT:
entrance_direction = 180;
break;
case CONSTANTS.DIRECTION.LEFT:
entrance_direction = 0;
break;
}
}
