hamid zarghami
55 lines
1.5 KiB
JavaScript
55 lines
1.5 KiB
JavaScript
import { getSwingBlockVelocity } from './utils'
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import * as constant from './constant'
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export const hookAction = (instance, engine, time) => {
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const ropeHeight = engine.getVariable(constant.ropeHeight)
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if (!instance.ready) {
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instance.x = engine.width / 2
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instance.y = ropeHeight * -1.5
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instance.ready = true
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}
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engine.getTimeMovement(
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constant.hookUpMovement,
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[[instance.y, instance.y - ropeHeight]],
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(value) => {
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instance.y = value
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},
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{
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after: () => {
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instance.y = ropeHeight * -1.5
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}
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}
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)
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engine.getTimeMovement(
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constant.hookDownMovement,
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[[instance.y, instance.y + ropeHeight]],
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(value) => {
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instance.y = value
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},
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{
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name: 'hook'
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}
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)
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const initialAngle = engine.getVariable(constant.initialAngle)
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instance.angle = initialAngle *
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getSwingBlockVelocity(engine, time)
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instance.weightX = instance.x +
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(Math.sin(instance.angle) * ropeHeight)
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instance.weightY = instance.y +
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(Math.cos(instance.angle) * ropeHeight)
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}
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export const hookPainter = (instance, engine) => {
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const { ctx } = engine
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const ropeHeight = engine.getVariable(constant.ropeHeight)
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const ropeWidth = ropeHeight * 0.1
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const hook = engine.getImg('hook')
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ctx.save()
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ctx.translate(instance.x, instance.y)
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ctx.rotate((Math.PI * 2) - instance.angle)
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ctx.translate(-instance.x, -instance.y)
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engine.ctx.drawImage(hook, instance.x - (ropeWidth / 2), instance.y, ropeWidth, ropeHeight + 5)
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ctx.restore()
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}
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