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#include <assert.h>
#include <stdlib.h>
#include "ring.h"
#include "tower.h"
void pickup_ring() {
int i;
int pickup = -1;
// should not be called if we are already holding a ring
assert(held == NULL);
// find the smallest ring on the currently hovered tower (if there is one)
for(i = 2; i >= 0; --i) {
if(rings[i].location == hover) {
pickup = i;
break;
}
}
if(pickup >= 0) {
held = &rings[pickup];
held->held = true;
towers[hover].rings[pickup] = false;
}
}
bool drop_ring() {
int i;
// should not be called if we are not holding a ring
assert(held != NULL);
//determine if we are allowed to drop the ring here
for(i = 2; i > held->size; --i) {
if(towers[held->location].rings[i]) {
return false;
}
}
held->held = false;
towers[held->location].rings[i] = true;
held = NULL;
return true;
}
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