// Spieler-Logik

const Player = {
    col: 0,           // Aktuelle Grid-Position
    row: 0,
    targetCol: 0,     // Ziel-Position (für smooth movement)
    targetRow: 0,
    visualX: 0,       // Visuelle Position (interpoliert)
    visualY: 0,
    direction: 'right',
    moving: false,
    moveProgress: 0,
    moveSpeed: 6,     // Tiles pro Sekunde
    animFrame: 0,
    animTimer: 0,
    inputQueue: null,  // Gepufferter Input

    init(col, row) {
        this.col = col;
        this.row = row;
        this.targetCol = col;
        this.targetRow = row;
        this.visualX = col;
        this.visualY = row;
        this.direction = 'right';
        this.moving = false;
        this.moveProgress = 0;
        this.inputQueue = null;
        this.animFrame = 0;
    },

    handleInput(key) {
        let dc = 0, dr = 0, dir = this.direction;

        switch (key) {
            case 'ArrowUp':    case 'w': case 'W': dr = -1; dir = 'up'; break;
            case 'ArrowDown':  case 's': case 'S': dr = 1;  dir = 'down'; break;
            case 'ArrowLeft':  case 'a': case 'A': dc = -1; dir = 'left'; break;
            case 'ArrowRight': case 'd': case 'D': dc = 1;  dir = 'right'; break;
            default: return;
        }

        this.inputQueue = { dc, dr, dir };
    },

    tryMove(grid) {
        if (!this.inputQueue) return;
        const { dc, dr, dir } = this.inputQueue;

        const newCol = this.col + dc;
        const newRow = this.row + dr;

        this.direction = dir;

        if (Utils.isWalkable(grid, newCol, newRow)) {
            this.targetCol = newCol;
            this.targetRow = newRow;
            this.moving = true;
            this.moveProgress = 0;
            this.inputQueue = null;
        }
    },

    update(dt, grid) {
        // Versuche gepufferten Input
        if (!this.moving) {
            this.tryMove(grid);
        }

        if (this.moving) {
            this.moveProgress += this.moveSpeed * dt;
            this.animTimer += dt;

            if (this.animTimer > 0.15) {
                this.animFrame = (this.animFrame + 1) % 2;
                this.animTimer = 0;
            }

            if (this.moveProgress >= 1) {
                this.moveProgress = 1;
                this.col = this.targetCol;
                this.row = this.targetRow;
                this.moving = false;
                this.moveProgress = 0;

                // Sofort nächsten Input verarbeiten
                this.tryMove(grid);
            }

            // Smooth interpolation
            this.visualX = Utils.lerp(this.col - (this.targetCol - this.col) * (this.moving ? 0 : 1),
                this.targetCol, this.moving ? this.moveProgress : 1);
            this.visualY = Utils.lerp(this.row - (this.targetRow - this.row) * (this.moving ? 0 : 1),
                this.targetRow, this.moving ? this.moveProgress : 1);
        }

        if (this.moving) {
            this.visualX = Utils.lerp(this.col, this.targetCol, this.moveProgress);
            this.visualY = Utils.lerp(this.row, this.targetRow, this.moveProgress);
        } else {
            this.visualX = this.col;
            this.visualY = this.row;
        }
    },

    draw(time) {
        Renderer.drawPlayer(this.visualX, this.visualY, this.direction, this.animFrame, time);
    }
};