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index.js
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index.js
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/* eslint-disable eslint-comments/no-unused-disable */
/* eslint-disable react/jsx-no-duplicate-props */
/* eslint-disable react-native/no-inline-styles */
import React, {Component} from 'react';
import {
AppRegistry,
StyleSheet,
StatusBar,
Text,
View,
Alert,
BackHandler,
TouchableOpacity,
Modal,
TextInput,
} from 'react-native';
import {GameEngine, dispatch} from 'react-native-game-engine';
import {Head} from './head';
import {Food} from './food';
import {Tail} from './tail';
import {GameLoop} from './systems';
import Constants from './Constants';
export default class Game extends Component {
constructor(props) {
super(props);
this.boardSize = Constants.GRID_SIZE * Constants.CELL_SIZE;
this.engine = null;
this.state = {
running: true,
score: 0,
visible: false,
onFocused: true,
name: '',
};
}
exitApp = () => {
this.setState({running: false});
Alert.alert('Hold on!', 'Are you sure you want to Exit?', [
{
text: 'Cancel',
onPress: () => this.setState({running: false, visible: true}),
style: 'cancel',
},
{text: 'YES', onPress: () => BackHandler.exitApp()},
]);
return true;
};
backAction = () => {
this.setState({running: false});
Alert.alert('Hold on!', 'Are you sure you want to Exit?', [
{
text: 'Cancel',
onPress: () => this.setState({running: true}),
style: 'cancel',
},
{text: 'YES', onPress: () => BackHandler.exitApp()},
]);
return true;
};
componentDidMount() {
const {name} = this.state;
this.backHandler = BackHandler.addEventListener(
'hardwareBackPress',
this.backAction,
);
this.modal(true, name);
}
componentWillUnmount() {
this.backHandler.remove();
}
modal = (obj, namee) => {
if (obj === false && namee === '') {
Alert.alert('Please Enter Username!');
this.setState({
visible: true,
running: false,
});
} else if (obj === false && namee != '') {
this.setState({
visible: false,
running: true,
});
} else if (obj === true && namee === '') {
this.setState({
visible: true,
running: false,
});
}
};
stdModalVisible = (show) => {
this.setState({visible: show});
};
randomBetween = (min, max) => {
return Math.floor(Math.random() * (max - min + 1) + min);
};
onEvent = (e) => {
const {score} = this.state;
if (e.type === 'game-over') {
this.setState({
running: false,
});
Alert.alert('Hold on!', 'what do you want?', [
{
text: 'Exit',
onPress: () => BackHandler.exitApp(),
},
{text: 'Restart', onPress: () => this.reset()},
]);
} else if (e.type === 'score+') {
var s = score + 1;
this.setState({
score: s,
});
}
};
reset = () => {
this.engine.swap({
head: {
position: [0, 0],
xspeed: 1,
yspeed: 0,
nextMove: 10,
updateFrequency: 10,
size: 20,
renderer: <Head />,
},
food: {
position: [
this.randomBetween(0, Constants.GRID_SIZE - 1),
this.randomBetween(0, Constants.GRID_SIZE - 1),
],
size: 20,
renderer: <Food />,
},
tail: {size: 20, elements: [], renderer: <Tail />},
});
this.setState({
running: true,
score: 0,
});
};
handleFocuse = () => {
this.setState({onFocused: true});
};
handleBlur = () => {
this.setState({onFocused: false});
};
render() {
const {score, name} = this.state;
return (
<View style={styles.container}>
<Modal
animationType={'slide'}
transparent={true}
visible={this.state.visible}
onRequestClose={() => {
this.exitApp();
}}>
<View style={styles.stdModalMainView}>
<Text style={styles.modalHaderTxt}>Select Username</Text>
<TextInput
onChangeText={this.handleFocuse}
onTouchStart={this.handleBlur}
onChangeText={this.handleBlur}
onSubmitEditing={this.handleFocuse}
onChangeText={(val) => {
this.setState({name: val});
}}
style={[
styles.nameInput,
// eslint-disable-next-line react-native/no-inline-styles
{
borderBottomColor: this.state.onFocused ? 'black' : 'green',
borderBottomWidth: 2,
},
]}
placeholder="Name"
placeholderTextColor="black"
/>
<TouchableOpacity
style={styles.stdModalBtn}
onPress={() => this.modal(false, name)}>
<Text style={styles.stdTxt}>Play</Text>
</TouchableOpacity>
</View>
</Modal>
<GameEngine
ref={(ref) => {
this.engine = ref;
}}
style={[
{
width: this.boardSize,
height: this.boardSize,
backgroundColor: '#ffffff',
flex: null,
marginTop: 100,
},
]}
systems={[GameLoop]}
entities={{
head: {
position: [0, 0],
xspeed: 1,
yspeed: 0,
nextMove: 10,
updateFrequency: 10,
size: 20,
renderer: <Head />,
},
food: {
position: [
this.randomBetween(0, Constants.GRID_SIZE - 1),
this.randomBetween(0, Constants.GRID_SIZE - 1),
],
size: 20,
renderer: <Food />,
},
tail: {size: 20, elements: [], renderer: <Tail />},
}}
running={this.state.running}
onEvent={this.onEvent}>
<StatusBar hidden={true} />
</GameEngine>
<View style={styles.scoreView}>
<Text style={styles.scoreTxt}>{name}'s Score - </Text>
<Text style={styles.scoreTxt}>{score}</Text>
</View>
<View style={styles.controls}>
<View style={styles.controlRow}>
<TouchableOpacity
onPress={() => {
this.engine.dispatch({type: 'move-up'});
}}>
<View style={styles.control} />
</TouchableOpacity>
</View>
<View style={styles.controlRow}>
<TouchableOpacity
onPress={() => {
this.engine.dispatch({type: 'move-left'});
}}>
<View style={styles.control} />
</TouchableOpacity>
<View style={[styles.control, {backgroundColor: null}]} />
<TouchableOpacity
onPress={() => {
this.engine.dispatch({type: 'move-right'});
}}>
<View style={styles.control} />
</TouchableOpacity>
</View>
<View style={styles.controlRow}>
<TouchableOpacity
onPress={() => {
this.engine.dispatch({type: 'move-down'});
}}>
<View style={styles.control} />
</TouchableOpacity>
</View>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
//flex: 1,
backgroundColor: '#4D4D4D',
alignItems: 'center',
justifyContent: 'center',
},
controls: {
width: 300,
height: 300,
flexDirection: 'column',
marginTop: 40,
},
controlRow: {
height: 70,
width: 300,
alignItems: 'center',
justifyContent: 'center',
flexDirection: 'row',
},
control: {
width: 70,
height: 70,
backgroundColor: 'green',
},
scoreView: {
flexDirection: 'row',
justifyContent: 'space-between',
},
scoreTxt: {
fontSize: 20,
fontWeight: 'bold',
color: 'red',
},
stdModalMainView: {
height: 320,
width: 360,
backgroundColor: '#455A64',
bottom: 0,
position: 'absolute',
borderTopLeftRadius: 40,
borderTopRightRadius: 40,
alignItems: 'center',
},
nameInput: {
fontSize: 25,
fontWeight: 'bold',
height: 50,
width: 250,
marginTop: 40,
textAlign: 'center',
},
modalHaderTxt: {
textAlign: 'center',
fontSize: 25,
color: 'white',
fontWeight: 'bold',
marginTop: 10,
},
stdModalBtn: {
height: 50,
width: 200,
backgroundColor: 'blue',
marginTop: 40,
justifyContent: 'center',
borderRadius: 40,
},
stdTxt: {
textAlign: 'center',
fontSize: 25,
color: 'white',
},
});
AppRegistry.registerComponent('game', () => Game);