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Add "Press space to play" text when not activated
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| import Runner from "./Runner" | ||
| import { IS_HIDPI } from "./varibles" | ||
|
|
||
| export default class PressToStart { | ||
| canvas!: HTMLCanvasElement | ||
| ctx!: CanvasRenderingContext2D | ||
| canvasDimensions!: Dimensions | ||
| textImgPos!: Position | ||
|
|
||
| animTimer = 0 | ||
| opacity = 0 | ||
| currTextIndex = 1 | ||
| fadeIn = true | ||
|
|
||
| constructor(canvas: HTMLCanvasElement, textImgPos: Position, dimensions: Dimensions) { | ||
| this.canvas = canvas | ||
| this.ctx = canvas.getContext("2d")! | ||
| this.canvasDimensions = dimensions | ||
| this.textImgPos = textImgPos | ||
| } | ||
|
|
||
| drawText(dimensions: any) { | ||
| let centerX = this.canvasDimensions.WIDTH / 2 | ||
|
|
||
| let textSourceX = dimensions.OFFSET_X | ||
| let textSourceY = dimensions.OFFSET_Y | ||
| let textSourceWidth = dimensions.TEXT_WIDTH | ||
| let textSourceHeight = dimensions.TEXT_HEIGHT | ||
|
|
||
| const textTargetX = Math.round(centerX - dimensions.TEXT_WIDTH / 2) | ||
| const textTargetY = Math.round((this.canvasDimensions.HEIGHT - 25) / 3) | ||
| const textTargetWidth = dimensions.TEXT_WIDTH | ||
| const textTargetHeight = dimensions.TEXT_HEIGHT | ||
|
|
||
| if (IS_HIDPI) { | ||
| textSourceX *= 2 | ||
| textSourceY *= 2 | ||
| textSourceWidth *= 2 | ||
| textSourceHeight *= 2 | ||
| } | ||
| textSourceX += this.textImgPos.x | ||
| textSourceY += this.textImgPos.y | ||
|
|
||
| this.ctx.save() | ||
| this.ctx.globalAlpha = this.opacity | ||
| this.ctx.drawImage( | ||
| Runner.imageSprite, | ||
| textSourceX, | ||
| textSourceY, | ||
| textSourceWidth, | ||
| textSourceHeight, | ||
| textTargetX, | ||
| textTargetY, | ||
| textTargetWidth, | ||
| textTargetHeight | ||
| ) | ||
| this.ctx.restore() | ||
| this.ctx.globalAlpha = 1 | ||
| } | ||
|
|
||
| drawEmoji(text: string, fadeOut = false) { | ||
| let centerX = this.canvasDimensions.WIDTH / 2 | ||
| const textTargetY = 100 | ||
| this.ctx.font = "16px system-ui, sans-serif" | ||
| this.ctx.textAlign = "center" | ||
| this.ctx.textBaseline = "middle" | ||
| this.ctx.save() | ||
| if (fadeOut) { | ||
| this.ctx.globalAlpha = this.opacity | ||
| } | ||
| this.ctx.fillStyle = "#6c6c6c" | ||
| this.ctx.fillText(text, centerX, textTargetY) | ||
| this.ctx.restore() | ||
| this.ctx.globalAlpha = 1 | ||
| } | ||
|
|
||
| /** | ||
| * Update animation frames. | ||
| */ | ||
| update(deltaTime: number, fadeOut = false) { | ||
| if (this.opacity === 0 && fadeOut) return | ||
|
|
||
| if (this.opacity === 1) { | ||
| this.animTimer += deltaTime | ||
| if (this.animTimer > PressToStart.TEXT_PAUSE_DURATION) { | ||
| this.fadeIn = false | ||
| this.animTimer = 0 | ||
| } | ||
| } else if (this.opacity === 0 && !this.fadeIn) { | ||
| this.fadeIn = true | ||
| this.currTextIndex = this.currTextIndex + 1 < PressToStart.TEXT_LIST.length ? this.currTextIndex + 1 : 0 | ||
| } | ||
|
|
||
| if (fadeOut && this.opacity > 0) { | ||
| this.fadeIn = false | ||
| } | ||
|
|
||
| if (this.fadeIn) { | ||
| this.opacity = Math.min(1, this.opacity + PressToStart.FADE_SPEED * deltaTime) | ||
| } else { | ||
| this.opacity = Math.max(0, this.opacity - PressToStart.FADE_SPEED * deltaTime) | ||
| } | ||
|
|
||
| let textDimension = PressToStart.TEXT_LIST[this.currTextIndex] | ||
| this.drawText(textDimension) | ||
| this.drawEmoji("Code with 🖐️ & ❤️", fadeOut) | ||
| } | ||
|
|
||
| reset() { | ||
| this.animTimer = 0 | ||
| } | ||
|
|
||
| static FADE_SPEED = 1 / 500 | ||
| static TEXT_PAUSE_DURATION = 875 | ||
| static TEXT_LIST = [ | ||
| { | ||
| REMARK: "jp", | ||
| OFFSET_X: 0, | ||
| OFFSET_Y: 66, | ||
| TEXT_WIDTH: 222, | ||
| TEXT_HEIGHT: 14 | ||
| }, | ||
| { | ||
| REMARK: "zh", | ||
| OFFSET_X: 0, | ||
| OFFSET_Y: 80, | ||
| TEXT_WIDTH: 126, | ||
| TEXT_HEIGHT: 14 | ||
| }, | ||
| { | ||
| REMARK: "en", | ||
| OFFSET_X: 240, | ||
| OFFSET_Y: 66, | ||
| TEXT_WIDTH: 264, | ||
| TEXT_HEIGHT: 14 | ||
| }, | ||
| { | ||
| REMARK: "en", | ||
| OFFSET_X: 240, | ||
| OFFSET_Y: 80, | ||
| TEXT_WIDTH: 278, | ||
| TEXT_HEIGHT: 14 | ||
| } | ||
| ] | ||
| } |
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