hamid zarghami
83 lines
2.2 KiB
JavaScript
83 lines
2.2 KiB
JavaScript
import { Instance } from 'cooljs'
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import * as constant from './constant'
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const getActionConfig = (engine, type) => {
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const {
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width, height, utils
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} = engine
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const { random } = utils
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const size = engine.getVariable(constant.cloudSize)
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const actionTypes = {
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bottomToTop: {
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x: width * random(0.3, 0.7),
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y: height,
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vx: 0,
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vy: engine.pixelsPerFrame(height) * 0.7 * -1
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},
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leftToRight: {
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x: size * -1,
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y: height * random(0.3, 0.6),
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vx: engine.pixelsPerFrame(width) * 0.4,
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vy: engine.pixelsPerFrame(height) * 0.1 * -1
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},
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rightToLeft: {
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x: width,
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y: height * random(0.2, 0.5),
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vx: engine.pixelsPerFrame(width) * 0.4 * -1,
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vy: engine.pixelsPerFrame(height) * 0.1
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},
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rightTopToLeft: {
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x: width,
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y: 0,
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vx: engine.pixelsPerFrame(width) * 0.6 * -1,
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vy: engine.pixelsPerFrame(height) * 0.5
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}
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}
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return actionTypes[type]
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}
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export const flightAction = (instance, engine) => {
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const { visible, ready, type } = instance
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if (!visible) return
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const size = engine.getVariable(constant.cloudSize)
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if (!ready) {
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const action = getActionConfig(engine, type)
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instance.ready = true
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instance.width = size
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instance.height = size
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instance.x = action.x
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instance.y = action.y
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instance.vx = action.vx
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instance.vy = action.vy
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}
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instance.x += instance.vx
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instance.y += instance.vy
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if (instance.y + size < 0
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|| instance.y > engine.height
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|| instance.x + size < 0
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|| instance.x > engine.width) {
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instance.visible = false
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}
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}
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export const flightPainter = (instance, engine) => {
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const { ctx } = engine
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const flight = engine.getImg(instance.imgName)
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ctx.drawImage(flight, instance.x, instance.y, instance.width, instance.height)
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}
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export const addFlight = (engine, number, type) => {
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const flightCount = engine.getVariable(constant.flightCount)
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if (flightCount === number) return
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const flight = new Instance({
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name: `flight_${number}`,
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action: flightAction,
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painter: flightPainter
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})
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flight.imgName = `f${number}`
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flight.type = type
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engine.addInstance(flight, constant.flightLayer)
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engine.setVariable(constant.flightCount, number)
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}
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