void test_02() {
// Create a universe
Universe universe;
// Add a bunch of objects
Object* A = new Object;
A->set_velocity(0, 1);
for ( int ii = 0; ii < 10; ++ii) {
A->set_position(ii, ii);
universe.add_object(A);
}
std::cout << "Initial conditions: \n";
debug_display_world(universe);
// Iterate the engine a few times
for (int ii = 0; ii < 5; ++ii) {
universe.physics_runtime_iteration();
std::cout << "\nIteration " << ii << ":\n";
debug_display_world(universe);
}
}
void test_004 () {
Universe universe;
Object* A = new Object;
Object* B = new Object;
universe.add_object(A);
universe.add_object(B);
A->set_position(5, 2);
B->set_position(3, 1);
A->set_mass(-1.5);
vec2d acceleration = universe.physics.acceleration(A,B);
A->calc_new_pos_vel(universe.objects, universe.physics);
std::cout << "Acceleration of ObjectA With Respect to ObjectB =" << acceleration[0] << "," << acceleration[1] << std::endl;
debug_display_world(universe);
}
void test_03 () {
// Create a universe
Universe universe;
// Create two objects
Object* A = new Object;
Object* B = new Object;
// Set them apart, and on a collision course
A->set_position(2, 0);
A->set_velocity(-1, 0);
A->set_radius(1);
B->set_position(-2, 0);
B->set_velocity(1, 0.1);
B->set_radius(2);
// Add them to the universe
universe.add_object(A);
universe.add_object(B);
// Open a file
std::ofstream outputfile;
outputfile.open("test_03.csv");
// Start to iterate 10000 cycles
for (int ii = 0; ii < 10000; ++ii) {
// Output the positions of the two objects to a file
vec2d posA = A->get_position();
vec2d posB = B->get_position();
outputfile << posA[0] << "," << posA[1] << "," << posB[0] << "," << posB[1] << ";" << std::endl;
// Iterate the physics
universe.physics_runtime_iteration();
}
}
void addRandomObjects(Universe &universe, unsigned seed, int objectAmount){
if(!seed){
srand(time(NULL));
}else{
srand(seed);
}
std::array<double,2> radiusLim = {0.2, 0.3};
std::array<double,2> massLim = {0.1, 3};
std::array<double,2> velocityLim = {-1, 1};
for(int ii = 0; ii < objectAmount; ii++){
Object* A = new Object;
A->set_mass((std::rand()/(double)RAND_MAX)*(massLim[1]-massLim[0])+massLim[0]);
A->set_velocity((std::rand()/(double)RAND_MAX)*(velocityLim[1]-velocityLim[0])+velocityLim[0],(std::rand()/(double)RAND_MAX)*(velocityLim[1]-velocityLim[0])+velocityLim[0]);
A->set_radius((std::rand()/(double)RAND_MAX)*(radiusLim[1]-radiusLim[0])+radiusLim[0]);
A->bouncyness = std::rand()/(double)RAND_MAX;
std::array<double,2> xLim = {-universe.width/2+A->get_radius(), universe.width/2-A->get_radius()};
std::array<double,2> yLim = {-universe.height/2+A->get_radius(), universe.height/2-A->get_radius()};
do{
A->set_position((std::rand()/(double)RAND_MAX)*(xLim[1]-xLim[0])+xLim[0], (std::rand()/(double)RAND_MAX)*(yLim[1]-yLim[0])+yLim[0]);
}while(CollidesWithAny(A, universe));
universe.add_object(A);
}
}
void test_00 () {
// Show the user we are running test 00
std::cout << "Running test_00..." << std::endl << std::endl;
// Make the universe
Universe universe;
// Open a new scope when creating objects, see below why
Object* A;
Object* B;
{
// Generate a few objects
A = new Object;
B = new Object;
// Give them new positions
A->set_position(1, 1);
B->set_position(-1, 2);
// Add the objects to the universe
universe.add_object(A);
universe.add_object(B);
}
// Show a few things about the world we just created
debug_display_world(universe);
std::cout << "\nUpdating the positions\n";
// So to update the position you have to do this
A->set_position(2, 2);
A->set_velocity(3, 1);
B->set_position(-2, -2);
B->set_velocity(-1, -2);
// Display the world to the commandline
debug_display_world(universe);
// Now let's try to remove an object
std::cout << "\n Removing A" << std::endl;
debug_display_world(universe);
// Now create a new object
std::cout << "\n Adding another object C " << std::endl;
Object* C;
{
C = new Object;
C->set_position(0.5, 0.5);
universe.add_object(C);
}
// And show the mapping and world
debug_display_world(universe);
std::cout << "\n Removing B" << std::endl;
universe.remove_object(B);
debug_display_world(universe);
}