Refactor props handling and inventory logic; add ghost prop preview

game/enemy/handler.rb

@@ -12,10 +12,10 @@ class EnemyHandler
 
   def spawn!
     # For now, just spawn a single enemy at a fixed location
-    #start_room_coords = $bus.get(:start_room_coords)
+    start_room_coords = $bus.get(:start_room_coords)
-    #if @enemies.empty?
+    if @enemies.empty?
-    #  @enemies << Enemy.new((start_room_coords[0] * 2 + 1 + 4) * 60 + 30, (start_room_coords[1] * 2 + 1 + 4) * 60 + 30)
+      @enemies << Enemy.new((start_room_coords[0] * 2 + 1 + 4) * 60 + 30, (start_room_coords[1] * 2 + 1 + 4) * 60 + 30)
-    #end
+    end
   end
 
   def draw

game/hud/inventory.rb

@@ -3,6 +3,7 @@ class Inventory
   COLS = 3
   ROW_HEIGHT = 48
   COL_WIDTH = 40
+  RECT = [22, 30, 126, 196]
 
   CRAFT_RECIPES = {
     lorentz_field: { wood: 16, metal: 8, science: 2 },
@@ -39,6 +40,24 @@ class Inventory
       @grid[row][col][1][0] += amount
       @grid[row][col][1][0] = @grid[row][col][1][1] if @grid[row][col][1][0] > @grid[row][col][1][1]
     end
+
+    $bus.on(:consume) do |type, amount|
+      row, col = find_slot(type)
+      next false unless row
+      next false if @grid[row][col][1][0] < amount
+      @grid[row][col][1][0] -= amount
+      next true
+    end
+
+    $bus.on(:count) do |type|
+      row, col = find_slot(type)
+      next 0 unless row
+      next @grid[row][col][1][0]
+    end
+
+    $bus.on(:selected_item) do
+      @inventory_selected
+    end
   end
 
   # Draw the inventory
@@ -71,27 +90,40 @@ class Inventory
   def button_down(id, pos)
     case id
     when Gosu::MS_LEFT, Gosu::MS_RIGHT
-      mouse_click(*pos, id)
+      return mouse_click(*pos, id)
     when Gosu::KB_1 then @inventory_selected = :occams_razor
     when Gosu::KB_2 then @inventory_selected = :quantum_bow
     when Gosu::KB_3 then @inventory_selected = :blade_of_recursion
-    when Gosu::KB_C
+    when Gosu::KB_DOWN
       row, col = find_slot(@inventory_selected)
       @inventory_selected = @grid[(row + 1) % @grid.size][col][0]
-    when Gosu::KB_V
+    when Gosu::KB_UP
+      row, col = find_slot(@inventory_selected)
+      @inventory_selected = @grid[(row - 1) % @grid.size][col][0]
+    when Gosu::KB_LEFT
+      row, col = find_slot(@inventory_selected)
+      @inventory_selected = @grid[row][(col - 1) % @grid[row].size][0]
+    when Gosu::KB_RIGHT
       row, col = find_slot(@inventory_selected)
       @inventory_selected = @grid[row][(col + 1) % @grid[row].size][0]
+    when Gosu::KB_RETURN
+      craft(@inventory_selected, ctrl: Gosu.button_down?(Gosu::KB_RIGHT_CONTROL) || Gosu.button_down?(Gosu::KB_LEFT_CONTROL))
+    else
+      return false
     end
+    true
   end
 
   # Mouse click detection
   def mouse_click(mx, my, id)
+    return false unless intersects?([mx, my, 1, 1], RECT)
+
     x_start, y_start = OFFSET
     row_idx = ((my - y_start) / ROW_HEIGHT).floor
     col_idx = ((mx - x_start) / COL_WIDTH).floor
 
-    return if row_idx < 0 || row_idx >= @grid.size
+    return true if row_idx < 0 || row_idx >= @grid.size
-    return if col_idx < 0 || col_idx >= @grid[row_idx].size
+    return true if col_idx < 0 || col_idx >= @grid[row_idx].size
 
     type, (amount, max) = @grid[row_idx][col_idx]
 
@@ -104,6 +136,8 @@ class Inventory
         craft(type, ctrl: Gosu.button_down?(Gosu::KB_RIGHT_CONTROL) || Gosu.button_down?(Gosu::KB_LEFT_CONTROL))
       end
     end
+
+    true
   end
 
   private

game/props/base.rb

@@ -8,11 +8,26 @@ class Prop
   # A prop is one that is placed at the center of a tile (radar, torch & chest)
   attr_reader :x, :y
 
+  def self.setup_sprites(path, frames)
+    @frames_count = frames
+    @spritesheet = Gosu::Image.load_tiles(path, 20, 20, retro: true)
+  end
+
+  def self.spritesheet
+    @spritesheet
+  end
+
+  def self.frames_count
+    @frames_count
+  end
+
+  def self.ghost
+    @spritesheet&.first
+  end
+
   def initialize(x, y)
     @x = x
     @y = y
-    @frames_count = 0
-    @spritesheet = nil
     @health = 100
   end
 
@@ -34,7 +49,7 @@ class Prop
   end
 
   def update(dt)
-    return unless Gosu.button_down?(Gosu::MS_LEFT)
+    return unless Gosu.button_down?(Gosu::MS_LEFT) || Gosu.button_down?(Gosu::KB_X)
 
     player_x, player_y = $bus.get(:player_position) || [0, 0]
 
@@ -42,12 +57,13 @@ class Prop
 
     return unless tile_x == @x && tile_y == @y
 
-    mouse_x, mouse_y = $bus.get(:mouse_pos)
+    if Gosu.button_down?(Gosu::MS_LEFT)
-    cam_x, cam_y = $bus.get(:camera_pos)
+      mouse_x, mouse_y = $bus.get(:mouse_pos)
-    world_mouse_x = mouse_x + cam_x
+      cam_x, cam_y = $bus.get(:camera_pos)
-    world_mouse_y = mouse_y + cam_y
+      world_mouse_x = mouse_x + cam_x
-
+      world_mouse_y = mouse_y + cam_y
-    return unless intersects?([world_mouse_x, world_mouse_y, 1, 1], self.rect)
+      return unless intersects?([world_mouse_x, world_mouse_y, 1, 1], self.rect)
+    end
 
     @health -= DESTRUCTION_SPEED * dt
     if @health <= 0
@@ -60,16 +76,16 @@ class Prop
   end
 
   def draw
-    return unless @spritesheet
+    return unless self.class.spritesheet
 
     cam_x, cam_y = $bus.get(:camera_pos) || [0, 0]
     screen_x = @x * 120 + 90 - cam_x
     screen_y = @y * 120 + 90 - cam_y
 
     elapsed = Gosu.milliseconds / 1000.0
-    frame_index = ((elapsed * @frames_count).floor) % @frames_count
+    frame_index = ((elapsed * self.class.frames_count).floor) % self.class.frames_count
 
-    @spritesheet[frame_index].draw(screen_x - 20, screen_y - 20, screen_y, 2, 2)
+    self.class.spritesheet[frame_index].draw(screen_x - 20, screen_y - 20, screen_y, 2, 2)
 
     if @health < 100
       percent = 1.0 - @health / 100.0
@@ -81,7 +97,7 @@ class Prop
       bar_x = screen_x - w / 2
       bar_y = screen_y + h + 5
 
-      Gosu.draw_rect(bar_x, bar_y, bar_width, bar_height, Gosu::Color::RED, screen_y + 1)
+      Gosu.draw_rect(bar_x, bar_y, bar_width, bar_height, Gosu::Color::RED, screen_y - 19)
     end
 
     return unless DEBUG

game/props/chest.rb

@@ -1,11 +1,7 @@
 require_relative "base"
 
 class Chest < Prop
-  def initialize(x, y)
+  setup_sprites("assets/images/chest.png", 1)
-    super(x, y)
-    @frames_count = 1
-    @spritesheet = Gosu::Image.load_tiles("assets/images/chest.png", 20, 20, retro: true)
-  end
 
   def resources
     { wood: rand(0..64), metal: rand(0..16), science: rand(0..4) }

game/props/handler.rb

@@ -58,8 +58,7 @@ class PropsHandler
       [start_room_x + 2, start_room_y + 2]
     ].sample
     chest = Chest.new(x, y)
-    @props << chest
+    add(chest)
-    @grid[[x, y]] = chest
   end
 
   def nearby_props(rect)
@@ -84,9 +83,7 @@ class PropsHandler
 
   def add(prop)
     @props << prop
-
+    @grid[[prop.x, prop.y]] = prop
-    key = [prop.x, prop.y]
-    @grid[key] = prop
   end
 
   def update(dt)
@@ -97,10 +94,59 @@ class PropsHandler
         @grid.delete([prop.x, prop.y])
       end
     end
+    if Gosu.button_down?(Gosu::KB_P) # place selected if it is a placeable item
+      selected_item = $bus.get(:selected_item)
+      if selected_item == :torch
+        player_x, player_y = $bus.get(:player_position) || [0, 0]
+        tile = [(player_x - 90) / 120, (player_y - 90) / 120].map(&:round)
+        torch = Torch.new(*tile)
+        return if @grid[[tile[0], tile[1]]] # can't place if something is already there
+        return if $bus.get_all(:collides?, torch.rect).include?(:character) # can't place if colliding with player
+        return unless $bus.get(:consume, :torch, 1)
+        add(torch)
+      elsif selected_item == :radar
+        player_x, player_y = $bus.get(:player_position) || [0, 0]
+        tile = [(player_x - 90) / 120, (player_y - 90) / 120].map(&:round)
+        radar = Radar.new(*tile)
+        return if @grid[[tile[0], tile[1]]]
+        return if $bus.get_all(:collides?, radar.rect).include?(:character)
+        return unless $bus.get(:consume, :radar, 1)
+        add(radar)
+      end
+    end
+  end
+
+  def button_down(id, pos)
+    #
   end
 
   def draw
     cam = $bus.get(:camera_pos) || [0, 0]
     nearby_props([*cam, *SCREEN_SIZE]).each(&:draw)
+    draw_ghost_prop!
+  end
+
+  def draw_ghost_prop!
+    # draw a ghost of the prop that would be placed if the player presses the place button,
+    # to give them a preview of where it would go, also tint it red if it can't be placed there for any reason
+    # or green if it can
+    selected_item = $bus.get(:selected_item)
+    return unless [:torch, :radar].include?(selected_item)
+    cam_x, cam_y = $bus.get(:camera_pos) || [0, 0]
+    player_x, player_y = $bus.get(:player_position) || [0, 0]
+    x, y = [(player_x - 90) / 120, (player_y - 90) / 120].map(&:round)
+    return if @grid[[x, y]]
+    return if $bus.get(:count, selected_item) < 1
+    world_x = x * 120 + 90
+    world_y = y * 120 + 90
+    screen_x = world_x - cam_x
+    screen_y = world_y - cam_y
+    possible = !$bus.get_all(:collides?, [world_x - 20, world_y - 20, 40, 40]).include?(:character)
+    color = possible ? Gosu::Color.new(255 * 0.7, 128, 239, 128) : Gosu::Color.new(255 * 0.7, 255, 116, 108)
+    if selected_item == :torch
+      Torch.ghost.draw(screen_x - 20, screen_y - 20, screen_y, 2, 2, color)
+    elsif selected_item == :radar
+      Radar.ghost.draw(screen_x - 20, screen_y - 20, screen_y, 2, 2, color)
+    end
   end
 end

game/props/radar.rb

@@ -1,11 +1,7 @@
 require_relative "base"
 
 class Radar < Prop
-  def initialize(x, y)
+  setup_sprites("assets/images/radar.png", 4)
-    super(x, y)
-    @frames_count = 4
-    @spritesheet = Gosu::Image.load_tiles("assets/images/radar.png", 20, 20, retro: true)
-  end
 
   def resources
     { wood: rand(0..2), metal: rand(0..8), science: rand(0..2) }

game/props/torch.rb

@@ -1,11 +1,7 @@
 require_relative "base"
 
 class Torch < Prop
-  def initialize(x, y)
+  setup_sprites("assets/images/torch.png", 4)
-    super(x, y)
-    @frames_count = 4
-    @spritesheet = Gosu::Image.load_tiles("assets/images/torch.png", 20, 20, retro: true)
-  end
 
   def resources
     { wood: rand(0..8) }

game/scene.rb

@@ -61,10 +61,14 @@ class Game < Scene
     py = SCREEN_SIZE[1] / 2.0
     
     # Collect torch positions relative to camera
-    torches = $bus.get(:nearby_torches,
+    torch_lights = []
-    [cam_x - SCREEN_SIZE[0] / 2, cam_y - SCREEN_SIZE[1] / 2, SCREEN_SIZE[0] * 2, SCREEN_SIZE[1] * 2]
+    # Only calculate torch lights if the setting is enabled, to save performance
-    ) || []
+    if $bus.get(:settings, :torches_lightup)
-    torch_lights = torches.map { |t| [t[0] - cam_x, t[1] - cam_y] }
+      torches = $bus.get(:nearby_torches,
+      [cam_x - SCREEN_SIZE[0] / 2, cam_y - SCREEN_SIZE[1] / 2, SCREEN_SIZE[0] * 2, SCREEN_SIZE[1] * 2]
+      ) || []
+      torch_lights = torches.map { |t| [t[0] - cam_x, t[1] - cam_y] }
+    end
 
     tiles_x = (SCREEN_SIZE[0] / cell) + 2
     tiles_y = (SCREEN_SIZE[1] / cell) + 2
@@ -152,6 +156,7 @@ class Game < Scene
   def button_down(id, pos)
     return $bus.emit(:change_scene, Menu.new) if id == Gosu::KB_ESCAPE
 
-    @hud.button_down(id, pos)
+    return if @hud.button_down(id, pos)
+    return if @props.button_down(id, pos)
   end
 end