v0.3 refact round

mranderson.lua

@@ -3,134 +3,85 @@
 -- desc:    Life of a programmer in the Matrix
 -- site:    http://teletype.hu
 -- license: MIT License
--- version: 0.1
+-- version: 0.3
 -- script:  lua
 
--- Game constants
+--------------------------------------------------------------------------------
-SCREEN_WIDTH = 240
+-- Game Configuration
-SCREEN_HEIGHT = 136
+--------------------------------------------------------------------------------
+local Config = {
+  screen = {
+    width = 240,
+    height = 136
+  },
+  colors = {
+    black = 0,
+    light_grey = 13,
+    dark_grey = 14,
+    green = 6,
+    npc = 8
+  },
+  player = {
+    w = 8,
+    h = 8,
+    start_x = 120,
+    start_y = 128,
+  },
+  physics = {
+    gravity = 0.5,
+    jump_power = -5,
+    move_speed = 1.5,
+    max_jumps = 2,
+  },
+  timing = {
+    splash_duration = 120 -- 2 seconds at 60fps
+  }
+}
 
--- Colors
+--------------------------------------------------------------------------------
-COLOR_BLACK = 0
+-- Game States
-COLOR_LIGHT_GREY = 13
+--------------------------------------------------------------------------------
-COLOR_DARK_GREY = 14
+local GAME_STATE_SPLASH = 0
-COLOR_GREEN = 6
+local GAME_STATE_MENU = 1
-COLOR_NPC = 8
+local GAME_STATE_GAME = 2
+local GAME_STATE_DIALOG = 3
 
--- Game state
+--------------------------------------------------------------------------------
-STATE_SPLASH = 0
+-- Modules
-STATE_MENU = 1
+--------------------------------------------------------------------------------
-STATE_GAME = 2
+local Splash = {}
-STATE_DIALOG = 3
+local Menu = {}
+local Game = {}
+local UI = {}
+local Input = {}
 
--- Player constants
+--------------------------------------------------------------------------------
-PLAYER_WIDTH = 8
+-- Game State
-PLAYER_HEIGHT = 8
+--------------------------------------------------------------------------------
-PLAYER_START_X = 120
+local State = {
-PLAYER_START_Y = 128
+  game_state = GAME_STATE_SPLASH,
-
+  current_screen = 1,
--- Ground constants
+  dialog_text = "",
-GROUND_X = 0
+  splash_timer = Config.timing.splash_duration,
-GROUND_Y = 136
+  player = {
-GROUND_W = 240
+    x = Config.player.start_x,
-GROUND_H = 8
+    y = Config.player.start_y,
-
+    w = Config.player.w,
--- Physics constants
+    h = Config.player.h,
-GRAVITY = 0.5
-JUMP_POWER = -5
-MOVE_SPEED = 1.5
-MAX_JUMPS = 2
-
--- Global variables (initialized)
-local gameState = STATE_SPLASH
-local currentScreen = 1
-local dialog_text = ""
-local splash_timer = 120 -- 2 seconds at 60fps
-
--- Player properties
-local player = {
-  x = PLAYER_START_X,
-  y = PLAYER_START_Y,
-  w = PLAYER_WIDTH,
-  h = PLAYER_HEIGHT,
     vx = 0,
     vy = 0,
     jumps = 0
-}
+  },
-
+  ground = {
--- Ground properties
+    x = 0,
-local ground = {
+    y = Config.screen.height,
-  x = GROUND_X,
+    w = Config.screen.width,
-  y = GROUND_Y,
+    h = 8
-  w = GROUND_W,
+  },
-  h = GROUND_H
+  menu_items = {"Play", "Exit"},
-}
+  selected_menu_item = 1,
-
--- Menu properties
-local menuItems = {"Play", "Exit"}
-local selectedMenuItem = 1
-
-local function draw_splash()
-  cls(COLOR_BLACK)
-  print("Mr. Anderson's", 78, 60, COLOR_LIGHT_GREY)
-  print("Addventure", 90, 70, COLOR_LIGHT_GREY)
-end
-
-local function update_splash()
-  splash_timer = splash_timer - 1
-  if splash_timer <= 0 then
-    gameState = STATE_MENU
-  end
-end
-
-local function draw_top_bar(title)
-  rect(0, 0, SCREEN_WIDTH, 10, COLOR_BLACK)
-  print(title, 3, 2, COLOR_LIGHT_GREY)
-end
-
-local function draw_menu()
-  cls(COLOR_LIGHT_GREY)
-  draw_top_bar("Main Menu")
-  for i, item in ipairs(menuItems) do
-    local color = COLOR_DARK_GREY
-    if i == selectedMenuItem then
-      color = COLOR_GREEN
-    end
-    print(item, 108, 70 + (i-1)*10, color)
-  end
-end
-
-local function update_menu()
-  if btnp(0) then -- Up
-    selectedMenuItem = selectedMenuItem - 1
-    if selectedMenuItem < 1 then
-      selectedMenuItem = #menuItems
-    end
-  elseif btnp(1) then -- Down
-    selectedMenuItem = selectedMenuItem + 1
-    if selectedMenuItem > #menuItems then
-      selectedMenuItem = 1
-    end
-  end
-
-  if btnp(4) or btnp(5) then -- A or B button
-    if selectedMenuItem == 1 then -- Play
-      -- Reset player state and screen for a new game
-      player.x = PLAYER_START_X
-      player.y = PLAYER_START_Y
-      player.vx = 0
-      player.vy = 0
-      player.jumps = 0
-      currentScreen = 1
-      gameState = STATE_GAME
-    elseif selectedMenuItem == 2 then -- Exit
-      exit()
-    end
-  end
-end
-
   -- Screen data
-local screens = {
+  screens = {
     { -- Screen 1
       name = "Screen 1",
       platforms = {
@@ -168,121 +119,218 @@ local screens = {
       }
     }
   }
+}
 
-local function game_update()
+--------------------------------------------------------------------------------
-  -- Handle input
+-- Input Module
-  if btn(2) then
+--------------------------------------------------------------------------------
-    player.vx = -MOVE_SPEED
+function Input.up() return btnp(0) end
-  elseif btn(3) then
+function Input.down() return btnp(1) end
-    player.vx = MOVE_SPEED
+function Input.left() return btn(2) end
-  else
+function Input.right() return btn(3) end
-    player.vx = 0
+function Input.action() return btnp(4) end
+function Input.back() return btnp(5) end
+
+--------------------------------------------------------------------------------
+-- UI Module
+--------------------------------------------------------------------------------
+function UI.draw_top_bar(title)
+  rect(0, 0, Config.screen.width, 10, Config.colors.black)
+  print(title, 3, 2, Config.colors.light_grey)
 end
 
-  if btnp(4) and player.jumps < MAX_JUMPS then
+function UI.draw_dialog()
-    player.vy = JUMP_POWER
+  rect(40, 50, 160, 40, Config.colors.black)
-    player.jumps = player.jumps + 1
+  rectb(40, 50, 160, 40, Config.colors.dark_grey)
+  print(State.dialog_text, 120 - #State.dialog_text * 2, 68, Config.colors.light_grey)
+end
+
+--------------------------------------------------------------------------------
+-- Splash Module
+--------------------------------------------------------------------------------
+function Splash.draw()
+  cls(Config.colors.black)
+  print("Mr. Anderson's", 78, 60, Config.colors.light_grey)
+  print("Addventure", 90, 70, Config.colors.light_grey)
+end
+
+function Splash.update()
+  State.splash_timer = State.splash_timer - 1
+  if State.splash_timer <= 0 then
+    State.game_state = GAME_STATE_MENU
+  end
+end
+
+--------------------------------------------------------------------------------
+-- Menu Module
+--------------------------------------------------------------------------------
+function Menu.draw()
+  cls(Config.colors.light_grey)
+  UI.draw_top_bar("Main Menu")
+  for i, item in ipairs(State.menu_items) do
+    local color = Config.colors.dark_grey
+    if i == State.selected_menu_item then
+      color = Config.colors.green
+    end
+    print(item, 108, 70 + (i-1)*10, color)
+  end
+end
+
+function Menu.update()
+  if Input.up() then
+    State.selected_menu_item = State.selected_menu_item - 1
+    if State.selected_menu_item < 1 then
+      State.selected_menu_item = #State.menu_items
+    end
+  elseif Input.down() then
+    State.selected_menu_item = State.selected_menu_item + 1
+    if State.selected_menu_item > #State.menu_items then
+      State.selected_menu_item = 1
+    end
+  end
+
+  if Input.action() or Input.back() then
+    if State.selected_menu_item == 1 then -- Play
+      -- Reset player state and screen for a new game
+      State.player.x = Config.player.start_x
+      State.player.y = Config.player.start_y
+      State.player.vx = 0
+      State.player.vy = 0
+      State.player.jumps = 0
+      State.current_screen = 1
+      State.game_state = GAME_STATE_GAME
+    elseif State.selected_menu_item == 2 then -- Exit
+      exit()
+    end
+  end
+end
+
+--------------------------------------------------------------------------------
+-- Game Module
+--------------------------------------------------------------------------------
+function Game.draw()
+  local currentScreenData = State.screens[State.current_screen]
+  
+  cls(Config.colors.light_grey)
+  UI.draw_top_bar(currentScreenData.name)
+
+  -- Draw platforms
+  for _, p in ipairs(currentScreenData.platforms) do
+    rect(p.x, p.y, p.w, p.h, Config.colors.dark_grey)
+  end
+  
+  -- Draw NPCs
+  for _, npc in ipairs(currentScreenData.npcs) do
+    rect(npc.x, npc.y, Config.player.w, Config.player.h, Config.colors.npc)
+  end
+
+  -- Draw ground
+  rect(State.ground.x, State.ground.y, State.ground.w, State.ground.h, Config.colors.dark_grey)
+
+  -- Draw player
+  rect(State.player.x, State.player.y, State.player.w, State.player.h, Config.colors.green)
+end
+
+function Game.update()
+  -- Handle input
+  if Input.left() then
+    State.player.vx = -Config.physics.move_speed
+  elseif Input.right() then
+    State.player.vx = Config.physics.move_speed
+  else
+    State.player.vx = 0
+  end
+
+  if Input.action() and State.player.jumps < Config.physics.max_jumps then
+    State.player.vy = Config.physics.jump_power
+    State.player.jumps = State.player.jumps + 1
   end
 
   -- Update player position
-  player.x = player.x + player.vx
+  State.player.x = State.player.x + State.player.vx
-  player.y = player.y + player.vy
+  State.player.y = State.player.y + State.player.vy
 
   -- Screen transition
-  if player.x > SCREEN_WIDTH - player.w then
+  if State.player.x > Config.screen.width - State.player.w then
-    if currentScreen < #screens then
+    if State.current_screen < #State.screens then
-      currentScreen = currentScreen + 1
+      State.current_screen = State.current_screen + 1
-      player.x = 0
+      State.player.x = 0
     else
-      player.x = SCREEN_WIDTH - player.w
+      State.player.x = Config.screen.width - State.player.w
     end
-  elseif player.x < 0 then
+  elseif State.player.x < 0 then
-    if currentScreen > 1 then
+    if State.current_screen > 1 then
-      currentScreen = currentScreen - 1
+      State.current_screen = State.current_screen - 1
-      player.x = SCREEN_WIDTH - player.w
+      State.player.x = Config.screen.width - State.player.w
     else
-      player.x = 0
+      State.player.x = 0
     end
   end
 
   -- Apply gravity
-  player.vy = player.vy + GRAVITY
+  State.player.vy = State.player.vy + Config.physics.gravity
 
-  local currentScreenData = screens[currentScreen]
+  local currentScreenData = State.screens[State.current_screen]
-  local currentPlatforms = currentScreenData.platforms
   -- Collision detection with platforms
-  for i, p in ipairs(currentPlatforms) do
+  for _, p in ipairs(currentScreenData.platforms) do
-    if player.vy > 0 and player.y + player.h >= p.y and player.y + player.h <= p.y + p.h and player.x + player.w > p.x and player.x < p.x + p.w then
+    if State.player.vy > 0 and State.player.y + State.player.h >= p.y and State.player.y + State.player.h <= p.y + p.h and State.player.x + State.player.w > p.x and State.player.x < p.x + p.w then
-      player.y = p.y - player.h
+      State.player.y = p.y - State.player.h
-      player.vy = 0
+      State.player.vy = 0
-      player.jumps = 0
+      State.player.jumps = 0
     end
   end
 
   -- Collision detection with ground
-  if player.y + player.h > ground.y and player.x + player.w > ground.x and player.x < ground.x + ground.w then
+  if State.player.y + State.player.h > State.ground.y then
-    player.y = ground.y - player.h
+    State.player.y = State.ground.y - State.player.h
-    player.vy = 0
+    State.player.vy = 0
-    player.jumps = 0
+    State.player.jumps = 0
   end
 
   -- NPC interaction
-  if btnp(4) then
+  if Input.action() then
-    for i, npc in ipairs(currentScreenData.npcs) do
+    for _, npc in ipairs(currentScreenData.npcs) do
-      if math.abs(player.x - npc.x) < 12 and math.abs(player.y - npc.y) < 12 then
+      if math.abs(State.player.x - npc.x) < 12 and math.abs(State.player.y - npc.y) < 12 then
-        dialog_text = npc.name
+        State.dialog_text = npc.name
-        gameState = STATE_DIALOG
+        State.game_state = GAME_STATE_DIALOG
+      end
     end
   end
 end
 
-  -- Clear screen
+function Game.update_dialog()
-  cls(COLOR_LIGHT_GREY)
+  if Input.action() or Input.back() then
-
+    State.game_state = GAME_STATE_GAME
-  draw_top_bar(currentScreenData.name)
-
-  -- Draw platforms
-  for i, p in ipairs(currentPlatforms) do
-    rect(p.x, p.y, p.w, p.h, COLOR_DARK_GREY)
-  end
-  
-  -- Draw NPCs
-  for i, npc in ipairs(currentScreenData.npcs) do
-    rect(npc.x, npc.y, PLAYER_WIDTH, PLAYER_HEIGHT, COLOR_NPC)
-  end
-
-  -- Draw ground
-  rect(ground.x, ground.y, ground.w, ground.h, COLOR_DARK_GREY)
-
-  -- Draw player
-  rect(player.x, player.y, player.w, player.h, COLOR_GREEN)
-end
-
-local function draw_dialog()
-  rect(40, 50, 160, 40, COLOR_BLACK)
-  rectb(40, 50, 160, 40, COLOR_DARK_GREY)
-  print(dialog_text, 120 - #dialog_text * 2, 68, COLOR_DARK_GREY)
-end
-
-local function update_dialog()
-  if btnp(4) or btnp(5) then
-    gameState = STATE_GAME
   end
 end
 
+--------------------------------------------------------------------------------
+-- Main Game Loop
+--------------------------------------------------------------------------------
+local STATE_HANDLERS = {
+  [GAME_STATE_SPLASH] = function()
+    Splash.update()
+    Splash.draw()
+  end,
+  [GAME_STATE_MENU] = function()
+    Menu.update()
+    Menu.draw()
+  end,
+  [GAME_STATE_GAME] = function()
+    Game.update()
+    Game.draw()
+  end,
+  [GAME_STATE_DIALOG] = function()
+    Game.draw() -- Draw game behind dialog
+    UI.draw_dialog()
+    Game.update_dialog()
+  end,
+}
+
 function TIC()
-  if gameState == STATE_SPLASH then
+  local handler = STATE_HANDLERS[State.game_state]
-    update_splash()
+  if handler then
-    draw_splash()
+    handler()
-  elseif gameState == STATE_MENU then
-    update_menu()
-    draw_menu()
-  elseif gameState == STATE_GAME then
-    game_update()
-  elseif gameState == STATE_DIALOG then
-    game_update() -- keep drawing the game state in the background
-    draw_dialog()
-    update_dialog()
   end
 end
 
@@ -315,4 +363,3 @@ end
 -- <PALETTE>
 -- 000:1a1c2c5d275db13e53ef7d57ffcd75a7f07038b76425717929366f3b5dc941a6f673eff7f4f4f494b0c2566c86333c57
 -- </PALETTE>
-