/* main loop */
static void mainLoop(void)
{
ARUint8 *dataPtr;
ARMarkerInfo *marker_info;
int marker_num;
float curPaddlePos[3];
int i;
double err;
double angle;
err=0.;
/* grab a video frame */
if( (dataPtr = (ARUint8 *)arVideoGetImage()) == NULL ) {
arUtilSleep(2);
return;
}
if( count == 0 ) arUtilTimerReset();
count++;
/* detect the markers in the video frame */
if( arDetectMarkerLite(dataPtr, thresh, &marker_info, &marker_num) < 0 ) {
cleanup();
exit(0);
}
argDrawMode2D();
if( !arDebug ) {
argDispImage( dataPtr, 0,0 );
}
else {
argDispImage( dataPtr, 1, 1 );
if( arImageProcMode == AR_IMAGE_PROC_IN_HALF )
argDispHalfImage( arImage, 0, 0 );
else
argDispImage( arImage, 0, 0);
glColor3f( 1.0, 0.0, 0.0 );
glLineWidth( 1.0 );
for( i = 0; i < marker_num; i++ ) {
argDrawSquare( marker_info[i].vertex, 0, 0 );
}
glLineWidth( 1.0 );
}
arVideoCapNext();
for( i = 0; i < marker_num; i++ )
marker_flag[i] = 0;
/* get the paddle position */
paddleGetTrans(paddleInfo, marker_info, marker_flag,
marker_num, &cparam);
/* draw the 3D models */
glClearDepth( 1.0 );
glClear(GL_DEPTH_BUFFER_BIT);
/* get the translation from the multimarker pattern */
if( (err=arMultiGetTransMat(marker_info, marker_num, config)) < 0 ) {
argSwapBuffers();
return;
}
// printf("err = %f\n", err);
if(err > 100.0 ) {
argSwapBuffers();
return;
}
//draw a red ground grid
drawGroundGrid( config->trans, 15, 150.0, 110.0, 0.0);
/* find the paddle position relative to the base */
if (paddleInfo->active)
findPaddlePosition(curPaddlePos,paddleInfo->trans,config->trans);
/* checking for paddle gesture */
if( paddleInfo->active)
{
int findItem=-1;
if (myPaddleItem.item!=-1)
{
if( check_incline(paddleInfo->trans, config->trans, &angle) ) {
myPaddleItem.x += 2.0 * cos(angle);
myPaddleItem.y += 2.0 * sin(angle);
if( myPaddleItem.x*myPaddleItem.x +
myPaddleItem.y*myPaddleItem.y > 900.0 ) {
myPaddleItem.x -= 2.0 * cos(angle);
myPaddleItem.y -= 2.0 * sin(angle);
myListItem.item[myPaddleItem.item].onpaddle=0;
myListItem.item[myPaddleItem.item].pos[0]=curPaddlePos[0];
myListItem.item[myPaddleItem.item].pos[1]=curPaddlePos[1];
myPaddleItem.item = -1;
}
}
}
else
{
if ((findItem=check_pickup(paddleInfo->trans, config->trans,&myListItem, &angle))!=-1) {
myPaddleItem.item=findItem;
myPaddleItem.x =0.0;
myPaddleItem.y =0.0;
myPaddleItem.angle = 0.0;
myListItem.item[myPaddleItem.item].onpaddle=1;
}
}
}
/* draw the item */
drawItems(config->trans,&myListItem);
/* draw the paddle */
if( paddleInfo->active ){
draw_paddle(paddleInfo,&myPaddleItem);
}
argSwapBuffers();
}
/* The main game loop */
static void do_game(game_t *p_game)
{
uint8_t exit=FALSE;
while(!exit)
{
uint16_t input = get_input(p_game);
uint16_t fire;
int i;
exit = input & FE_EVENT_EXIT;
fire = input & FE_EVENT_SELECT;
/* Move the paddle (according to input) */
update_paddle(&p_game->paddle, input & FE_EVENT_LEFT ? 4:0, input & FE_EVENT_RIGHT ? 4:0);
/* Handle the ball(s) */
p_game->free_ball = -1;
for (i=0; i<MAX_BALLS; i++)
{
/* Unused balls are skipped */
if (!(p_game->p_balls[i].state & BALL_STATE_ACTIVE))
{
draw_ball(&p_game->p_balls[i]);
p_game->free_ball = i;
continue;
}
/* The player is holding the ball */
if (p_game->p_balls[i].state & BALL_STATE_HOLDING)
{
p_game->p_balls[i].lastx = p_game->p_balls[i].x;
p_game->p_balls[i].x += p_game->paddle.x-p_game->paddle.lastx;
if (fire)
{
/* The player relases the ball. The following will
* clear the HOLDING-bit. It will also shoot the
* ball away upwards.
*/
p_game->p_balls[i].dx = 1;
p_game->p_balls[i].state &= (0xff ^ BALL_STATE_HOLDING);
bounce_ball_paddle(p_game, &p_game->p_balls[i]);
}
}
else if (paddle_ball_collide(&p_game->paddle, &p_game->p_balls[i]))
{
/* Hold the ball if the pad is sticky */
if (p_game->paddle.type & SPECIAL_STICKY)
{
p_game->p_balls[i].dy = 0;
p_game->p_balls[i].dx = 0;
p_game->p_balls[i].state |= BALL_STATE_HOLDING;
p_game->paddle.type--; /* Sticky for maximum 3 rounds */
}
else
bounce_ball_paddle(p_game, &p_game->p_balls[i]);
}
/* Check collisions against blocks */
block_ball_collide(p_game, &p_game->p_balls[i]);
draw_ball(&p_game->p_balls[i]);
/* Update the ball (and check if it moves out of the playfield) */
if (update_ball(p_game, &p_game->p_balls[i]))
{
/* Ball is out of bounds - Remove it */
init_ball(&p_game->p_balls[i], 0, 0, 0);
p_game->nr_balls--;
}
}
/* Handle the specials */
p_game->free_special = -1;
for (i=0; i<MAX_SPECIALS; i++)
{
int res;
/* Always draw the specials for timing-reasons */
draw_special(&p_game->p_specials[i]);
/* Inactive special - continue */
if (!p_game->p_specials[i].type)
{
p_game->free_special = i;
continue;
}
/* This moves the special and also checks if it collides with the paddle */
res = update_special(p_game, &p_game->p_specials[i]);
switch(res)
{
case 1: /* Player took the special */
switch(p_game->p_specials[i].type)
{
case SPECIAL_EXTRA_BALL:
if (p_game->free_ball != -1) /* Check if there is free space for the ball */
{
p_game->nr_balls++;
init_ball(&p_game->p_balls[p_game->free_ball], p_game->paddle.x+PADDLE_WIDTH/2,
PADDLE_Y-PADDLE_HEIGHT, BALL_STATE_ACTIVE);
}
break;
case SPECIAL_LONG_PADDLE:
p_game->paddle.width = PADDLE_LONG_WIDTH;
break;
case SPECIAL_SHORT_PADDLE:
p_game->paddle.width = PADDLE_SHORT_WIDTH;
break;
case SPECIAL_EXTRA_LIFE:
if (p_game->lives < MAX_LIVES)
{
p_game->lives++;
draw_lives(p_game);
}
break;
case SPECIAL_STICKY:
/*
* For the sticky and destroyers, we use the bits
* from the flag and downwards as counters.
*
* i.e: SPECIAL_STICKY is the third bit, which means
* that type becomes 0b00000111. type is then
* lowered when the ball hits the paddle and after
* zeroing the lower bits, the SPECIAL_STICKY bit is
* finally cleared. This gives a maximum of three
* sticky rounds.
*
* These two only adds 30 bytes to the binary :-)
*/
p_game->paddle.type = (SPECIAL_STICKY | (SPECIAL_STICKY-1));
break;
case SPECIAL_DESTROYER:
p_game->p_balls[0].state |= (BALL_STATE_DESTROYER | (BALL_STATE_DESTROYER-1));
break;
case SPECIAL_FLOOR:
p_game->state |= (SPECIAL_FLOOR | 2); /* Three times */
fe_fill_area(0, SCREEN_HEIGHT-FLOOR_HEIGHT, SCREEN_WIDTH, FLOOR_HEIGHT);
break;
}
/* Fall through */
case -1:
/* Remove the special */
p_game->nr_specials--;
fe_clear_area(p_game->p_specials[i].x, p_game->p_specials[i].y-1, SPECIAL_WIDTH, SPECIAL_HEIGHT+1);
p_game->p_specials[i].type = SPECIAL_NONE;
break;
}
}
/* No balls left in play */
if (!p_game->nr_balls)
{
if (--p_game->lives == 0)
exit = TRUE; /* No lives left! */
else
{
/* Restart the game */
p_game->nr_balls = 1;
draw_screen(p_game);
init_paddle(&p_game->paddle, SPECIAL_NONE, SCREEN_WIDTH/2-PADDLE_WIDTH/2);
init_ball(&p_game->p_balls[0], p_game->paddle.x+p_game->paddle.width/2,
PADDLE_Y-PADDLE_HEIGHT, BALL_STATE_HOLDING | BALL_STATE_ACTIVE);
}
}
/* No blocks left to remove */
if (!p_game->nr_blocks)
{
fe_sleep(LEVEL_SLEEP_PERIOD);
if (handle_level_finished(p_game) < 0)
exit = TRUE; /* Last level */
}
draw_paddle(&p_game->paddle);
/* Sleep for a short while. */
#if !defined(TARGET_REX)
fe_sleep(SLEEP_PERIOD);
#endif /* TARGET_REX */
}
}
