[英]java 2d net gravity calculation
我试图计算由于重力引起的净加速度,以便使用(G *(m1 * m2)/ d * d)/ m1建立一个简单的太空飞行模拟。 船舶倾向于以阶梯形式向半正确方向行驶。
主类的更新功能
public void update()
{
double[] accels = new double[bodies.size()];//acceleration of the planets
double[][] xyaccels = new double[bodies.size()][2];//storing the x and y
for(Body n: bodies){
int count = 0;
double dist = distance(ship.loc.x,ship.loc.y,n.loc.x,n.loc.y);
double acel = getAccel(n.mass, ship.mass, dist);
accels[count] = acel;
double alpha = getAngle(ship.loc.x,ship.loc.y,n.loc.x,n.loc.y);
//xyaccels[count][0] = Math.cos(alpha) * acel;
//xyaccels[count][1] = Math.sin(alpha) * acel;
//split the acceleration into the x and y
XA += Math.cos(alpha) * acel;
YA += Math.sin(alpha) * acel;
count++;
}
ship.update(XA, YA);
//XA = 0;
//YA = 0;
accels = null;
xyaccels = null;
}
飞船的更新功能
public void update(double XA, double YA){
xAccel += XA;
yAccel += YA;
//add the x-acceleration and the y-acceleration to the loc
loc.x += Math.round(xAccel);
loc.y += Math.round(yAccel);
}
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