void Rock :: draw()
{
// We need to draw 5!! For screen wrapping
// One where it is
drawAsteroid(tempPoint(v.getX(), v.getY()), size, numSides, rotation);
// One to the right
drawAsteroid(tempPoint(v.getX() + 2*POINT_MAX, v.getY()), size, numSides, rotation);
// One to the left
drawAsteroid(tempPoint(v.getX() - 2*POINT_MAX, v.getY()), size, numSides, rotation);
// One above it
drawAsteroid(tempPoint(v.getX(), v.getY() + 2*POINT_MAX), size, numSides, rotation);
// One below it
drawAsteroid(tempPoint(v.getX(), v.getY() - 2*POINT_MAX), size, numSides, rotation);
}
int main()
{
// Print instructions for user
printf("Asteroid!\nTry to collect as many colored circles as you can.\nThe game is simple. Use the arrow keys to navigate your rocket.\nUp accelerates\nDown brakes immediately\nLeft and Right turn your rocket.\n\nHave fun!!\n");
// Define variables
int xSize=800, ySize=600;
char c;
int stillgoing=1;
float xc=xSize/2, yc=ySize/2, *pxc=&xc, *pyc=&yc;
float dr=.1; // rotation increment
int sign = 1; // rotation sign
int r = 15; // box radius
int i; // box counter
int j; // triangle counter
double rotatea=0; // rotation angle of rocket
float dx=0, dy=0; // chane in position of rocket
float dt=0; // change in time for acceleration
float accel=.07; // acceleration of rocket
srand(time(NULL));
int rCir=0; // radius of circle
int xCir=xc,yCir=yc; // position of circle's center
int rC=255,gC=255,bC=255; // circle color
int cirCount=-1; // number of circles collected(starts at -1 because initial circle is created at center, then random placement begins. Fisrt circle placed at center does not count towards total.
int isaccel=0;
double rotatet=rotatea;
double yRotate=0, xRotate=0;
float xB, yB; // position of fired shot
gfx_open(xSize,ySize,"Rocketship!");
startGame(xSize, ySize);
while(stillgoing==1)
{
gfx_clear();
drawAsteroid(xCir,yCir,rCir,rC,gC,bC);
drawRocket(xc,yc,rotatet,r); // uses rotatet, because this will draw the rocket as turning when the left/right arrows are pressed
scoreboard(cirCount);
gfx_flush();
usleep(2000);
if(gfx_event_waiting()){
c=gfx_wait();
switch(c){
case 'R': // Accelerate
dt+=.01;
dx+=accel*dt; // increases speed dx by increasing the time and adding to dx
if(dx>.8) dx=.8; // this caps dx and dy at 1. Thus the maximum speed is dx=dy=1
dy=dx;
isaccel=1; // the rocket is currently accelerating
break;
case 'Q': // Turn left
rotatet-=dr; // decreases angle of rotation
break;
case 'S': // Turn right
//printf("ROTATET: %lf\n",rotatet);
rotatet+=dr; // increases angle of rotation
//printf("ROTATET: %lf\n",rotatet);
break;
case 'T': // Brake
dx=0; // sets speed dx and dy to 0
dy=0;
rotatea=rotatet;
yRotate=0;
xRotate=0;
break;
case ' ':
fire(rotatet, xc, yc, r);
break;
case 'q': // Quit
stillgoing=0;
printf("\nYou collected %i circles!\n",cirCount);
break;
default:
break;
}
}
if(isaccel==1){
printf("ROTATEA: %lf\n",rotatea);
if(sin(rotatea)<sin(rotatet)){
yRotate-=fabs(sin(rotatea+.1));
printf("check1\n");
}else if(sin(rotatea)>sin(rotatet)){
yRotate+=fabs(sin(rotatea-.1));
printf("check2\n");
}//else direction of acceleration is equal to direction rocket is facing
if(cos(rotatea)>cos(rotatet)){
xRotate-=fabs(cos(rotatea+.1));
printf("check3\n");
}else if(cos(rotatea)<cos(rotatet)){
xRotate+=fabs(cos(rotatea-.1));
printf("check4\n");
}
if(xRotate!=0) rotatea=atan(yRotate/xRotate);
printf("yRotate: %lf\nxRotate: %lf\nrotatea: %lf\nrotatet: %lf\n",yRotate,xRotate,rotatea,rotatet);
}
xc+=dx*cos(rotatea); // implements x and y speed(dx and dy) by changing position(xc,yc) of rocket at varying rate
yc+=dy*sin(rotatea); // why i use rotatea, not rotatet: the rocket will only update the angle of movement, if the rocket is accelerating. This way, you can turn the rocket while it is moving in another direction
isaccel=0;
// Transports rocket from one side of screen to other
wormhole(pxc,pyc,xSize,ySize);
// Creates new circle if rocket comes too close
if(sqrt(pow((xc-xCir),2)+pow((yc-yCir),2))<1.6*r+rCir){
cirCount++;
rCir=10+rand()%20;
do{
xCir=rand()%xSize;
yCir=rand()%ySize;
rC=100+rand()%155;
gC=100+rand()%155;
bC=100+rand()%155;
}while(sqrt(pow((xc-xCir),2)+pow((yc-yCir),2))<50);
}
}
}
