void initNiveau(Partie *p, Snake *s) {
/*Reinitialisation du serpent*/
resetSnake(s, *p);
/*Creation de la cible initiale*/
creerCible(*s, p);
}
/* May require the use of a ticker.attach in order to update the snake every
* x seconds. <http://mbed.org/handbook/Ticker>
*/
void moveSnake(void) {
/*
* NOTE: This is part of an ISR called by the Ticker
* So no printf, limited use of malloc.
* If issues occur, split up function
*/
/* TODO: test mbed ISR, determine how much memory allocation,
* max time for ISR, etc
* REMOVE PRINTF ONCE MIGRATION OCCURS
*/
LLRoot * master = &Snake;
LLNode * tmp;
char sHead_x, sHead_y, sHead_z;
char apple_x, apple_y, apple_z;
signed char XDIR, YDIR, ZDIR;
char count;
if(master == NULL) return;
moveFlag = 1;
errcode = 0;
/* Careful usage required, stale data can occur with these variables */
sHead_x = master->head->x;
sHead_y = master->head->y;
sHead_z = master->head->z;
apple_x = master->fruit_x;
apple_y = master->fruit_y;
apple_z = master->fruit_z;
XDIR = YDIR = ZDIR = 0;
switch(master->direction) {
case XPOS:
XDIR = 1;
break;
case XNEG:
XDIR = -1;
break;
case YPOS:
YDIR = 1;
break;
case YNEG:
YDIR = -1;
break;
case ZPOS:
ZDIR = 1;
break;
case ZNEG:
ZDIR = -1;
break;
default:
break;
}
/* Update snake nodes */
__disable_irq();
addToHeadLL(master, sHead_x + XDIR, sHead_y + YDIR, sHead_z + ZDIR);
__enable_irq();
// BEAMMEUPSCOTTY
myCube.plotPoint(sHead_x + XDIR, sHead_y + YDIR, sHead_z + ZDIR);
if(LLDEBUG) printf("debug: adding [%d %d %d]\r\n", sHead_x + XDIR, sHead_y + YDIR, sHead_z + ZDIR);
/* Boundary/Self checking */
count = 0;
tmp = master->head;
while(tmp != NULL) {
++count;
/* Check head coordinates against all other nodes */
if(count > 1) {
if((master->head->x == tmp->x) && (master->head->y == tmp->y) && (master->head->z == tmp->z)) {
if(LLDEBUG) printf("debug: conflict with snake head: [%d %d %d] ... resetting game\r\n", master->head->x, master->head->y, master->head->z);
resetSnake(master);
reset = 1;
errcode = 1;
break;
}
}
// TODO: flash cube face on wall hit
// in if statements
if(tmp->x > BOUNDARY) {
resetSnake(master);
reset = 1;
errcode = 3;
// TODO: light right wall
break;
}
if(tmp->x < 0) {
resetSnake(master);
reset = 1;
errcode = 3;
// TODO: light left wall
break;
}
if(tmp->y > BOUNDARY) {
resetSnake(master);
reset = 1;
errcode = 3;
// TODO: light back wall
break;
}
if(tmp->y < 0) {
resetSnake(master);
reset = 1;
errcode = 3;
// TODO: light front wall
break;
}
if(tmp->z > BOUNDARY) {
resetSnake(master);
reset = 1;
errcode = 3;
// TODO: light top wall
break;
}
if(tmp->z < 0) {
resetSnake(master);
reset = 1;
errcode = 3;
// TODO: light bottom wall
break;
}
tmp = tmp->next;
}
//master->length = count - 1;
if(reset) { reset = 0; return; }
/* Fruit detection */
if((sHead_x == apple_x) && (sHead_y == apple_y) && (sHead_z == apple_z)) {
generateFruit(master);
errcode = 2;
if(LLDEBUG) printf("debug: keeping tail [%d %d %d]\r\n", master->tail->x, master->tail->y, master->tail->z);
}else{
/* If we detect fruit, there is no need to remove the tail node.
* Otherwise we can remove it to produce the snake movement
*/
// BEAMMEUPSCOTTY
myCube.clearPoint(master->tail->x, master->tail->y, master->tail->z);
if(LLDEBUG) printf("debug: removing [%d %d %d] because no fruit detected\r\n", master->tail->x, master->tail->y, master->tail->z);
__disable_irq();
removeTailLL(master);
__enable_irq();
}
if(LLDEBUG) printListLL(master); /* Display LL header and node data */
}