gamejam-22/core/src/main/kotlin/com/last/commit/Player.kt

package com.last.commit

import com.badlogic.gdx.graphics.g2d.SpriteBatch
import com.badlogic.gdx.graphics.g2d.TextureRegion
import com.badlogic.gdx.math.Rectangle
import com.badlogic.gdx.math.Vector2
import com.last.commit.audio.SoundEngine
import com.last.commit.inventory.Inventory
import com.last.commit.inventory.InventoryItem
import com.last.commit.map.Collectible
import com.last.commit.map.Door
import com.last.commit.map.Interactable


class Player(private val textureRegion: TextureRegion) : Collidable {

    private var collider: Rectangle = Rectangle(0f, 0f, 0f, 0f)
    var position: Vector2 = Vector2.Zero
    private var direction = Vector2.Zero
    private val movementSpeed = 200f
    private val interactionRange = 60f
    private var lastStep = 0L

    val inventory: Inventory;

    init {
        val size = Math.max(textureRegion.regionWidth, textureRegion.regionHeight).toFloat()
        collider = Rectangle(0f, 0f, size, size)
        position = Vector2()
        inventory = Inventory()
    }

    fun getX(): Float {
        return position.x
    }

    fun getY(): Float {
        return position.y
    }

    fun move(v: Vector2, delta: Float) {
        if (v.x != 0f || v.y != 0f) {
            updatePosition(v, delta)
            updateCollider()

            if (System.currentTimeMillis() - lastStep > 500) {
                SoundEngine.play("STEPS_INDOOR") //0.5F
                lastStep = System.currentTimeMillis()
            }
        }
    }

    private fun updatePosition(v: Vector2, delta: Float) {
        position.add(v.setLength(movementSpeed * delta))
    }

    private fun updateCollider() {
        this.collider.x = position.x
        this.collider.y = position.y
    }

    override fun getCollider(): Rectangle {
        return collider
    }

    fun setPosition(x: Float, y: Float) {
        position[x] = y
    }

    fun getWidth(): Float {
        return collider.getWidth()
    }

    fun getHeight(): Float {
        return collider.getHeight()
    }

    fun getSize(): Float {
        return Math.max(getWidth(), getHeight())
    }

    fun lookAt(position: Vector2) {
        calculateRotationTo(position)
    }

    private fun calculateRotationTo(position: Vector2) {
        val playerPosition = this.position.cpy()
        playerPosition.add(collider.width / 2f, collider.height / 2f)
        direction = position.cpy()
        direction.sub(playerPosition)
        direction.setLength(interactionRange)
    }

    /**
     * Returns the direction relative to the players center.
     */
    fun getRelativeDirection(): Vector2 {
        return direction.cpy().add(getHalfPlayerWidth(), getHalfPlayerHeight())
    }

    /**
     * Returns the direction of the player in World positon considerung the interactionRange
     */
    fun getAbsoluteDirection(): Vector2 {
        return position.cpy().add(getRelativeDirection())
    }


    private fun getHalfPlayerWidth(): Float {
        return getWidth() / 2
    }

    private fun getHalfPlayerHeight(): Float {
        return getHeight() / 2
    }

    fun getRotation(): Float {
        return direction.angleDeg()
    }

    fun render(batch: SpriteBatch) {


        val halfPlayerWidth: Float = getHalfPlayerWidth() // TODO maybe use collider
        // dimensions
        val halfPlayerHeight: Float = getHalfPlayerHeight() // TODO maybe use collider
        // dimensions

        batch.draw(
            textureRegion, getX(), getY(),
            halfPlayerWidth, halfPlayerHeight, getWidth(),
            getHeight(), 1f, 1f,
            getRotation()
        )
    }

    fun canInteractWith(interactable: Interactable): Boolean {
        if (interactable is Door) {
            val requiredItem: String =
                interactable.cell.getTile().getProperties().get("requiredItem", "", String::class.java)
            val item: InventoryItem? = inventory.items.find { it.name == requiredItem }

            val result: Boolean
            if (item == null) {
                result = requiredItem == ""
            } else {
                result = requiredItem == item.name
            }
            return result
        } else if (interactable is Collectible) {
            if (interactable.requiredItem == "") {
                return true
            }
            inventory.items.find { it.name == interactable.requiredItem } ?: return false

            return true
        }

        return false;
    }

    fun interactWith(interactable: Interactable): Boolean {
        if (interactable is Door) {
            //check Collision
            if (getCollider().overlaps(interactable.getCollider())) {
                return false;
            }
            interactable.interact()
        } else if (interactable is Collectible) {
            if (inventory.hasItem(interactable.name) || inventory.isFull()) {
                return false
            } else {
                inventory.add(interactable.name)
                return true
            }
        }

        return false
    }
}