//Handling of rotation and debug up and down movement (disabled in curse.c)
void moveShip(Ship *ship, FILE *sketch, int direction) {
eraseShip(ship, sketch);
switch(direction) {
//down, left, right, up
case DOWN:
ship -> centerPos[0] += 0;
ship -> centerPos[1] += 10;
recreateShip(ship);
break;
case LEFT:
rotateShip(ship, -ROT_ANGLE);
break;
case RIGHT:
rotateShip(ship, ROT_ANGLE);
break;
case UP:
ship -> centerPos[0] -= 0;
ship -> centerPos[1] -= 10;
recreateShip(ship);
break;
}
drawShip(ship, sketch);
}
//Updates position of ship based on accelerations, called from timer.c critical zone
void applyAccelerations(Ship *ship, iArgs input, FILE *sketch) {
eraseShip(ship, sketch);
double oldX = ship -> centerPos[0];
double oldY = ship -> centerPos[1];
if (rotationBuffer != ship -> rotationAngle) {
rotationBuffer = ship -> rotationAngle;
}
double oldxV = ship -> xspeed;
double oldyV = ship -> yspeed;
double deltat = 0.05;
double thrust;
double ar = rotationBuffer * PI / 180.0;
if (ship -> thrustOn) {
thrust = input.thrust;
} else {
thrust = 0;
}
ship -> xA = thrust*cos(ar);
ship -> yA = -(input.gravity) + thrust*sin(ar);
ship -> centerPos[0] = oldX + oldxV*deltat + (1/2)*(ship -> xA)*deltat*deltat;
ship -> centerPos[1] = oldY + oldyV*deltat + (1/2)*(ship -> yA)*deltat*deltat;
ship -> xspeed = oldxV - (ship -> xA)*deltat;
ship -> yspeed = oldyV - (ship -> yA)*deltat;
checkBoundaries(ship);
recreateShip(ship);
if (rotationBuffer != ship -> rotationAngle) {
rotateShip(ship, rotationBuffer - 90);
}
drawShip(ship, sketch);
//
}
void rotateRight() {
rotateShip(&ship, 0., 0., rotSpeed);
}
void rotateLeft() {
rotateShip(&ship, 0., 0., -rotSpeed);
}
void rotateDown() {
rotateShip(&ship, rotSpeed, 0., 0.);
}
void rotateUp() {
rotateShip(&ship, -rotSpeed, 0., 0.);
}