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import PropTypes from "prop-types";
import React from "react";
import { Layer } from "react-konva";
import HoverTile from "../elements/HoverTile";
import { TILE_SIZE_IN_PIXELS } from "../MapConstants";
class HoverLayerComponent extends React.Component {
static propTypes = {
mouseX: PropTypes.number.isRequired,
mouseY: PropTypes.number.isRequired,
mapPosition: PropTypes.object.isRequired,
mapScale: PropTypes.number.isRequired,
isEnabled: PropTypes.func.isRequired,
onClick: PropTypes.func.isRequired
};
state = {
positionX: -1,
positionY: -1,
validity: false
};
componentDidUpdate() {
if (!this.props.isEnabled()) {
return;
}
const positionX = Math.floor(
(this.props.mouseX - this.props.mapPosition.x) /
(this.props.mapScale * TILE_SIZE_IN_PIXELS)
);
const positionY = Math.floor(
(this.props.mouseY - this.props.mapPosition.y) /
(this.props.mapScale * TILE_SIZE_IN_PIXELS)
);
if (
positionX !== this.state.positionX ||
positionY !== this.state.positionY
) {
this.setState({
positionX,
positionY,
validity: this.props.isValid(positionX, positionY)
});
}
}
render() {
if (!this.props.isEnabled()) {
return <Layer />;
}
const pixelX =
this.props.mapScale * this.state.positionX * TILE_SIZE_IN_PIXELS +
this.props.mapPosition.x;
const pixelY =
this.props.mapScale * this.state.positionY * TILE_SIZE_IN_PIXELS +
this.props.mapPosition.y;
return (
<Layer opacity={0.6}>
<HoverTile
pixelX={pixelX}
pixelY={pixelY}
scale={this.props.mapScale}
isValid={this.state.validity}
onClick={() =>
this.state.validity
? this.props.onClick(this.state.positionX, this.state.positionY)
: undefined}
/>
{this.props.children
? React.cloneElement(this.props.children, {
pixelX,
pixelY,
scale: this.props.mapScale
})
: undefined}
</Layer>
);
}
}
export default HoverLayerComponent;
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