/**
* Get direction from motion coordinates
* This function gets the motion direction from the current and previous
* object coordinates and the step size.
* @param x0 Original x coordinate of the object
* @param y0 Original y coordinate of the object
* @param x x coordinate of the object
* @param y y coordinate of the object
* @param s step size
*/
int AgiEngine::getDirection(int x0, int y0, int x, int y, int s) {
int dirTable[9] = { 8, 1, 2, 7, 0, 3, 6, 5, 4 };
return dirTable[checkStep(x - x0, s) + 3 * checkStep(y - y0, s)];
}
void RK4Integrator::setIntegrationStep(const double step)
{
checkStep(step);
integration_step = step;
}
/**
* Get direction from motion coordinates
* This function gets the motion direction from the current and previous
* object coordinates and the step size.
* @param x0 Original x coordinate of the object
* @param y0 Original y coordinate of the object
* @param x x coordinate of the object
* @param y y coordinate of the object
* @param s step size
*/
int AgiEngine::getDirection(int16 objX, int16 objY, int16 destX, int16 destY, int16 stepSize) {
int dirTable[9] = { 8, 1, 2, 7, 0, 3, 6, 5, 4 };
return dirTable[checkStep(destX - objX, stepSize) + 3 * checkStep(destY - objY, stepSize)];
}
RK4Integrator::RK4Integrator(double step)
: integration_step(step)
{
checkStep(step);
}