v0.6.5a: added a safety check to pickup up from heaps
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@ -160,6 +160,10 @@ public class Heap implements Bundlable {
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public Item pickUp() {
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public Item pickUp() {
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if (items.isEmpty()){
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destroy();
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return null;
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}
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Item item = items.removeFirst();
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Item item = items.removeFirst();
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if (items.isEmpty()) {
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if (items.isEmpty()) {
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destroy();
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destroy();
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