// create a new dot at the good border of the good cube
void Cube::moveDot(const uint8_t d, Cube& c,
const Side mine, const Side his) {
// move the dot to the good border:
if (mine == TOP ) dots[d].pos.y = maxPos.y;
else if (mine == LEFT ) dots[d].pos.x = maxPos.x;
else if (mine == BOTTOM) dots[d].pos.y = minPos.y+SPR_size.y;
else if (mine == RIGHT ) dots[d].pos.x = minPos.x+SPR_size.x;
// compute the discrete rotation to perform if needed:
uint8_t angleI = umod((mine-his-2), 4);
if (angleI) {
dots[d].vel = dots[d].vel.rotateI(angleI); // velocity rotation
dots[d].pos = rotatePos(dots[d].pos, angleI); // position rotation
}
c.newDot(dots[d].pos, dots[d].vel); // move to good cube
vid.sprites[d].hide(); // ...not here !
}
static inline void forth_vm_execute_instruction(forth_context_type *fc, char cmd)
{
// printf("%c\n",cmd);
// getchar();
switch(cmd)
{
case '0': push(fc,0); break;
case '1': push(fc,1); break;
case '2': push(fc,2); break;
case '3': push(fc,3); break;
case '4': push(fc,4); break;
case '5': push(fc,5); break;
case '6': push(fc,6); break;
case '7': push(fc,7); break;
case '8': push(fc,8); break;
case '9': push(fc,9); break;
case '@': at(fc); break; //@
case '!': to(fc); break; //!
case 'd': fc->SP+=fc->cell; break; //drop
case 'D': dup(fc); break; //dup
case 's': swap_(fc); break; //swap
case 'l': push(fc,next_cell(fc)); break; //lit
case '+': add(fc); break; //+
case '-': sub(fc); break; //-
case '*': mul(fc); break; //*
case '/': div_(fc); break; // /
case '%': mod(fc); break; //mod
case '&': and(fc); break; // and
case '|': or(fc); break; // or
case '^': xor(fc); break; // xor
case '>': more(fc); break; // >
case '<': less(fc); break; // <
case '=': eq(fc); break; // =
case 'b': branch(fc); break; // branch
case '?': cbranch(fc); break; // ?branch
case 'c': call(fc); break; // call
case 'r': ret(fc); break; // ret
case 't': to_r(fc); break; // >R
case 'f': from_r(fc); break; // R>
case 'i': in(fc); break; // in
case 'o': out(fc); break; // out
case '_': fc->stop=1; break; // stop
case 'A': adr0(fc); break; // @0
case 1: push(fc,fc->SP); break; // SP@
case 2: fc->SP=pop(fc); break; // SP!
case 3: push(fc,fc->RP); break; // RP@
case 4: fc->RP=pop(fc); break; // RP!
case 5: shl(fc); break; // <<
case 6: shr(fc); break; // >>
case 7: push(fc,*(size_t *)(fc->mem+fc->RP)); break; // i
case 8: cat(fc); break; // c@
case 9: cto(fc); break; // c!
case 10: set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(1); break; // nop
case 11: in_ready(fc); break; // ?in
case 12: out_ready(fc); break; // ?out
case 16: umod(fc); break; // umod
case 17: udiv(fc); break; // u/
// kernel
case 'K': kalsym_lookup(fc); break; // lookup kallsym address
case 18: kcall(fc); break; // kcall
}
}
int g (int *x) /*@*/
{
(void) umod (x);
(void) umod (mmod (umod (x)));
return *x;
}
int f (int *x)
{
(void) umod (mmod (umod (x)));
return *x;
}