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import React from 'react';
import propTypes from 'prop-types';
import style from './index.less';
import { blockShape } from '../../unit/const';
const xy = { // 方块在下一个中的坐标
I: [1, 0],
L: [0, 0],
J: [0, 0],
Z: [0, 0],
S: [0, 0],
O: [0, 1],
T: [0, 0],
};
const empty = [
[0, 0, 0, 0],
[0, 0, 0, 0],
];
export default class Next extends React.Component {
constructor() {
super();
this.state = {
block: empty,
};
}
componentWillMount() {
this.build(this.props.data);
}
componentWillReceiveProps(nextProps) {
this.build(nextProps.data);
}
shouldComponentUpdate(nextProps) {
return nextProps.data !== this.props.data;
}
build(type) {
const shape = blockShape[type];
const block = empty.map(e => ([...e]));
shape.forEach((m, k1) => {
m.forEach((n, k2) => {
if (n) {
block[k1 + xy[type][0]][k2 + xy[type][1]] = 1;
}
});
});
this.setState({ block });
}
render() {
return (
<div className={style.next}>
{
this.state.block.map((arr, k1) => (
<div key={k1}>
{
arr.map((e, k2) => (
<b className={e ? 'c' : ''} key={k2} />
))
}
</div>
))
}
</div>
);
}
}
Next.propTypes = {
data: propTypes.string,
};
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