// title:   MorsePit
// author:  He4eT@oddsquat.org
// desc:    Defeat endless waves of enemies using Morse code.
// site:    https://github.com/He4eT/MorsePit
// license: MIT License
// version: 0.1
// script:  js

// api:     https://github.com/nesbox/TIC-80/wiki/API

function TIC() {
  gameStages[currentStage]()
}

// Stages

const gameStages = {
  mainMenu,
  gameplay,
}

let currentStage = 'mainMenu'

// State

let interface = {
  arenaX: 7,
  arenaY: 7,
  spriteSize: 7,
  spriteHalfSize: 3,
}

let arena = {
  top: 0,
  right: 225,
  bottom: 89,
  left: 0,
}

let player = {
  sprite: 1,
  speed: 1,
  x: 0,
  y: 0,
}

// Main Menu

function mainMenu() {
  if ([BTN_A, BTN_B, BTN_X, BTN_Y].map(btn).some(Boolean)) {
    currentStage = 'gameplay'
  }

  const title = 'Morse Pit'
  const instruction = 'Press any key to start'

  cls(0)

  print(title, 12, 12, 3, false, 2)
  print(instruction, 12, 30, 4)
}

// Gameplay

function gameplay() {
  // chackColisions()

  handleMoves()
  handleMorse()

  // spawn()
  // moveEnemies()

  drawInterface()
  drawArena()
  // drawFX()
  // drawEnemies()
  drawPlayer()
}

function handleMoves() {
  player.speed = btn(BTN_A) ? 2 : 1

  if (btn(BTN_U)) player.y = Math.max(player.y - player.speed, arena.top)
  if (btn(BTN_D)) player.y = Math.min(player.y + player.speed, arena.bottom)
  if (btn(BTN_L)) player.x = Math.max(player.x - player.speed, arena.left)
  if (btn(BTN_R)) player.x = Math.min(player.x + player.speed, arena.right)
}

function handleMorse() {
  player.sprite = btn(BTN_B) ? 17 : 1
}

function drawInterface() {
  cls(0)
}

function drawArena() {
  map(0, 0, 30, 15)
}

function drawPlayer() {
  spr(
    player.sprite,
    interface.arenaX + player.x - interface.spriteHalfSize,
    interface.arenaY + player.y - interface.spriteHalfSize,
    0,
  )
}

// Constants

// Buttons
const [BTN_U, BTN_D, BTN_L, BTN_R, BTN_A, BTN_B, BTN_X, BTN_Y] = [
  ...Array(8).keys(),
]

// <TILES>
// 001:8800088080000080008880000088800000888000800000808800088000000000
// 002:0000000000000000000000000000000000000000000001110000012200000123
// 003:0000000000000000000000000000000000000000111111112222222233333333
// 004:0000000000000000000000000000000000000000111000002210000032100000
// 017:0000000008808800080008000008000008000800088088000000000000000000
// 018:0000012300000123000001230000012300000123000001230000012300000123
// 019:2111111111111111111111111111111111111111111111111111111111111111
// 020:3210000032100000321000003210000032100000321000003210000032100000
// 034:0000012300000122000001110000000000000000000000000000000000000000
// 035:3333333322222222111111110000000000000000000000000000000000000000
// 036:3210000022100000111000000000000000000000000000000000000000000000
// </TILES>

// <MAP>
// 000:203030303030303030303030303030303030303030303030303030303040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 001:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 002:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 003:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 004:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 005:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 006:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 007:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 008:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 009:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 010:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 011:213131313131313131313131313131313131313131313131313131313141000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// 012:223232323232323232323232323232323232323232323232323232323242000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// </MAP>

// <WAVES>
// 000:00000000ffffffff00000000ffffffff
// 001:0123456789abcdeffedcba9876543210
// 002:0123456789abcdef0123456789abcdef
// </WAVES>

// <SFX>
// 000:000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000304000000000
// </SFX>

// <TRACKS>
// 000:100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
// </TRACKS>

// <PALETTE>
// 000:000000002b36073642586e75657b8383949693a1a1eee8d5b58900cb4b16dc322fd336826c71c4268bd22aa198859900
// </PALETTE>