witcher-game-viewport/index.mjs

Creates a View Port for the game engine to display

export class Viewport {
    constructor(player, canvas_width, canvas_height, world_width, world_height) {
        this.player = player;
        this.width = canvas_width;
        this.height = canvas_height;
        this.world_width = world_width;
        this.world_height = world_height;
        this.leftX = (this.player.worldX - 400) - canvas_width / 2;
        this.rightX = (this.player.worldX + 400) + canvas_width / 2;
    }
    
    update() {
        this.leftX = (this.player.worldX - 400) - this.width / 2;
        this.rightX = (this.player.worldX + 400) + this.height / 2;

        let result =  {
            "leftX" : this.leftX,
            "rightX" : this.rightX
        }

        return result;
    }
}