Implementation of components for the entity component system
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@ -12,6 +12,7 @@
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#[derive(Clone)]
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pub struct Set {
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data: Vec<u64>,
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}
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@ -33,11 +34,11 @@ fn test_set() {
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impl Set {
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pub fn new(size: usize) -> Set {
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let mut set = Set { data: Vec::with_capacity(size) };
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for _ in 0..size {
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set.data.push(0)
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}
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set
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Set { data: vec![0; (size + 63) / 64] }
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}
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pub fn resize(&mut self, new_size: usize) {
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self.data.resize((new_size + 63) / 64, 0);
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}
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pub fn set(&mut self, i: usize, v: bool) {
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@ -48,7 +49,17 @@ impl Set {
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}
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}
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pub fn get(&mut self, i: usize) -> bool {
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pub fn get(&self, i: usize) -> bool {
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(self.data[i >> 6] & (1 << (i & 0x3F))) != 0
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}
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pub fn includes_set(&self, other: &Set) -> bool {
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debug_assert!(self.data.len() == other.data.len());
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for (a, b) in self.data.iter().zip(&other.data) {
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if a & b != *b {
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return false;
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}
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}
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true
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}
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}
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