C/C++-Quelltext

int x_dir = 0;
float x_speed = 0;
float x_acc = 0;
float x_acc_fwd = 0.025;
float x_acc_rev = -0.025;
float air_res = 0.05;

float x_vmax = 3.5;

int x_pos = 400;
int y_pos = 200;

int jet_pos = 0;

int framerate = 30;
long SimStepsPerFrame = 1;
long floating_time = 0;

boolean floating;
boolean brake = false;
boolean acc = true;

float frametime = framerate/SimStepsPerFrame;

PImage bg;


void setup() {
  size(800,400);
  bg = loadImage("bg.png");
  frameRate( framerate );
}

void draw() {
  background(20);
  image(bg, 0, 0);

  if (( x_dir == 1 ) && (floating == false)) {
	if ( x_speed >= x_vmax ) {
  	x_speed = x_vmax;
	} else {
  	x_speed += x_acc*frametime;   	
	}
  	x_pos += x_speed*frametime;  
  	
	
	} else if ((  x_dir == -1 ) && (floating == false)) {  
	if ( x_speed >= x_vmax ) {
  	x_speed = x_vmax;
	} else {
  	x_speed = x_acc*frametime;  
	}	
   
	x_pos += x_speed*frametime;  	
  }

	else if ((floating) && (x_dir == 1)) {
  	x_acc = 0;
  	x_speed += x_acc*frametime; - air_res*pow(x_speed,2);  
  	x_pos += x_speed*frametime;	
	} else if ((floating) && (x_dir == -1)) {
  	x_acc = 0;	
  	x_speed += x_acc*frametime + air_res*pow(x_speed,2);
  	x_pos += x_speed*frametime;        	
  }
  
  print("x_speed: ");
  print(x_speed);
  print("\t y_speed: ");
  print(y_speed);
  print("\t x_acc: ");
  print(x_acc);
  print("\t y_acc: ");
  print(y_acc);  
  print("\t x_pos: ");
  print(x_pos);
  print("\t y_pos: ");
  println(y_pos);	
  
  stroke(255);
  strokeWeight(10);
  point(400, 200);

  floating = true;
}


void keyPressed() {
  if ( keyCode == UP ) {
	y_acc = 1;
  } else if ( keyCode == DOWN ) {
	y_acc = -1;
  } else if ( keyCode == LEFT ) {  
	x_dir = -1;
	x_acc = x_acc_rev;	
  } else if ( keyCode == RIGHT ) {  
	x_dir = 1;	
	x_acc = x_acc_fwd;
  } 
  floating = false;
}