// initialize round
// place paddles in the middle and initialize ball
void start(Paddle * RedPaddle, Paddle * BluePaddle, Ball * ActiveBall)
{
tft.fillScreen(BLACK);
RedPaddle->horzPosition = srcWidth /2 - RedPaddle->size/2;
BluePaddle->horzPosition = srcWidth /2 - RedPaddle->size/2;
drawPaddle(RedPaddle);
drawPaddle(BluePaddle);
initializeBall(ActiveBall);
}
// This function does boundary checking on the ball, also determines where
// it hits the paddle, and changes the behavior of the ball depending.
void checkBallCollisions(int paddlePos)
{
// first check for any brick collisions
char detected = drawBricks(&ball);
// if no bricks hit, continue with normal collision detection
if(detected == 'n')
{
// right wall
if(ball.x >= SCREEN_WIDTH - BALL_RADIUS)
{
ball.x = SCREEN_WIDTH - (BALL_RADIUS + 1);
xdir = -xdir;
playTone(500, 50);
return;
}
// left wall
if(ball.x <= BALL_RADIUS)
{
ball.x = BALL_RADIUS + 1;
xdir = -xdir;
playTone(500, 50);
return;
}
// ceiling
if(ball.y >= SCREEN_HEIGHT - BALL_RADIUS)
{
ydir = -1.0;
playTone(500, 50);
return;
}
// middle of paddle
if(ball.y <= 19 && (ball.x <= paddlePos + (PADDLE_WIDTH / 2) + (BALL_RADIUS + 1) &&
ball.x >= paddlePos + (PADDLE_WIDTH / 2) - (BALL_RADIUS + 1)))
{
paddleHits++;
// increase ball speed slightly with every 6 paddle hits
if((paddleHits % 18 == 0) && (paddleHits <= 36))
speed += 1.0;
ball.y = 20;
ydir = 1.0;
playTone(500,50);
return;
}
// right side of paddle
else if(ball.y <= 19 && ((ball.x <= paddlePos + PADDLE_WIDTH) &&
(ball.x > paddlePos + (PADDLE_WIDTH / 2) + (BALL_RADIUS + 1))))
{
paddleHits++;
// increase ball speed slightly with every 6 paddle hits
if((paddleHits % 18 == 0) && (paddleHits <= 36))
speed += 1.0;
ball.y = 20;
ydir = 1.0;
xdir += 1.0;
playTone(500, 50);
return;
}
// left side of paddle
else if(ball.y <= 19 && ((ball.x >= paddlePos) &&
(ball.x < paddlePos + (PADDLE_WIDTH / 2) - (BALL_RADIUS + 1))))
{
paddleHits++;
// increase ball speed slightly with every 6 paddle hits
if((paddleHits % 18 == 0) && (paddleHits <= 36))
speed += 1.0;
ball.y = 20;
ydir = 1.0;
xdir -= 1.0;
playTone(500, 50);
return;
}
// ball hits floor, lives lost, score deducted
if(ball.y <= 10 && ((ball.x < paddlePos) || (ball.x > paddlePos + PADDLE_WIDTH)))
{
playTone(50,500);
tft.fillCircle(ball.y, ball.x, BALL_RADIUS, ST7735_BLACK);
drawPaddle();
initializeBall(getDifficulty());
decreaseLives();
displayStats();
delay(20);
}
}
// brick collision detected, adjust ball accordingly
else
{
// corner of brick hit
if(detected == 'c')
{
xdir = -xdir;
ydir = -ydir;
playTone(200,50);
return;
}
else
{
// left/right side of brick hit
if(detected == 'x')
{
xdir = -xdir;
playTone(200,50);
return;
}
// top/bottom of brick hit
else if(detected == 'y')
{
ydir = -ydir;
playTone(200,50);
return;
}
}
}
}
/* gestisce i tasti carattere */
void keyHandler(GLubyte key, GLint x, GLint y){
static int sCount=0;
if(key== 'q'){
fprintf(stderr, "Exit\n");
programData.exit = 1;
}else{
if(key == 'p'){ /* menu */
programData.menu = !programData.menu;
}else{
if(key == 'm'){ /* multisampling */
programData.multisample = !programData.multisample;
if(programData.multisample){
fprintf(stderr, "MULTISAMPING ON\n");
glEnable(GL_MULTISAMPLE);
}
else{
fprintf(stderr, "MULTISAMPING OFF\n");
glDisable(GL_MULTISAMPLE);
}
}else{
if(key == 'f'){ /* nebbia */
programData.fog= !programData.fog;
if(programData.fog){
fprintf(stderr, "FOG ON\n");
fog(1);
}
else{
fprintf(stderr, "FOG OFF\n");
fog(0);
}
}else{
if(key == 'n'){ /* nuova partita */
programData.gameStatus = 1;
programData.menu = 0;
programData.points= 0;
/* Inizializzo la posizione della telecamera */
worldData.angleX = 0.0f;
worldData.angleY = 0.0f;
worldData.angleMX = 0.0f;
worldData.angleMY = 0.0f;
worldData.nextAngleX = 0.0f;
worldData.nextAngleY = 0.0f;
worldData.nextAngleMX = 0.0f;
worldData.nextAngleMY = 0.0f;
/* Inizializzo il verme */
initializeWorm(0.0f, 0.0f, 83.5f, 0);
srand(time(NULL));
/* Inizializzo la palla */
initializeBall();
/* Inizializzo i dati utilizzati per la telecamera */
worldData.kup = 0;
worldData.kdown = 0;
worldData.kleft = 0;
worldData.kright = 0;
worldData.xStatus = 0;
worldData.yStatus = 0;
worldData.nextXstatus = 0;
worldData.nextYstatus = 0;
programData.velocity = VELOCITY;
programData.timeFrame = 1250/programData.velocity;
programData.velAngolare = programData.velocity*0.2;
programData.timerender = programData.time;
programData.timebase = programData.time;
programData.frame = 0;
}else{
if(key == 's'){/* screenshot */
char sname[20];
sprintf(sname, "screenshot%d.tga",sCount);
gltWriteTGA(sname);
sCount++;
}
}
}
}
}
}
}
