RPG::Weather

Class for weather effects (rain, storm, snow) displayed via RPGXP's Event command.

Superclass

• Object

Class Method

RPG::Weather.new([viewport])

Creates an RPG::Weather object. Specifies a Viewport (Viewport) when necessary.

Methods

dispose

Frees a weather effect.

update

Advances the weather effect. As a rule, this method is called once per frame.

Properties

type

Weather type (0: none, 1: rain, 2: storm; 3: snow).

max

Amount of weather to be shown at once (0..40).

ox

The X-coordinate of the effect's starting point. Correlates with the tilemap starting point and scrolls.

oy

The Y-coordinate of the effect's starting point. Correlates with the tilemap starting point and scrolls.

Definition

module RPG
  class Weather
    def initialize(viewport = nil)
      @type = 0
      @max = 0
      @ox = 0
      @oy = 0
      color1 = Color.new(255, 255, 255, 255)
      color2 = Color.new(255, 255, 255, 128)
      @rain_bitmap = Bitmap.new(7, 56)
      for i in 0..6
        @rain_bitmap.fill_rect(6-i, i*8, 1, 8, color1)
      end
      @storm_bitmap = Bitmap.new(34, 64)
      for i in 0..31
        @storm_bitmap.fill_rect(33-i, i*2, 1, 2, color2)
        @storm_bitmap.fill_rect(32-i, i*2, 1, 2, color1)
        @storm_bitmap.fill_rect(31-i, i*2, 1, 2, color2)
      end
      @snow_bitmap = Bitmap.new(6, 6)
      @snow_bitmap.fill_rect(0, 1, 6, 4, color2)
      @snow_bitmap.fill_rect(1, 0, 4, 6, color2)
      @snow_bitmap.fill_rect(1, 2, 4, 2, color1)
      @snow_bitmap.fill_rect(2, 1, 2, 4, color1)
      @sprites = []
      for i in 1..40
        sprite = Sprite.new(viewport)
        sprite.z = 1000
        sprite.visible = false
        sprite.opacity = 0
        @sprites.push(sprite)
      end
    end
    def dispose
      for sprite in @sprites
        sprite.dispose
      end
      @rain_bitmap.dispose
      @storm_bitmap.dispose
      @snow_bitmap.dispose
    end
    def type=(type)
      return if @type == type
      @type = type
      case @type
      when 1
        bitmap = @rain_bitmap
      when 2
        bitmap = @storm_bitmap
      when 3
        bitmap = @snow_bitmap
      else
        bitmap = nil
      end
      for i in 1..40
        sprite = @sprites[i]
        if sprite != nil
          sprite.visible = (i <= @max)
          sprite.bitmap = bitmap
        end
      end
    end
    def ox=(ox)
      return if @ox == ox;
      @ox = ox
      for sprite in @sprites
        sprite.ox = @ox
      end
    end
    def oy=(oy)
      return if @oy == oy;
      @oy = oy
      for sprite in @sprites
        sprite.oy = @oy
      end
    end
    def max=(max)
      return if @max == max;
      @max = [[max, 0].max, 40].min
      for i in 1..40
        sprite = @sprites[i]
        if sprite != nil
          sprite.visible = (i <= @max)
        end
      end
    end
    def update
      return if @type == 0
      for i in 1..@max
        sprite = @sprites[i]
        if sprite == nil
          break
        end
        if @type == 1
          sprite.x -= 2
          sprite.y += 16
          sprite.opacity -= 8
        end
        if @type == 2
          sprite.x -= 8
          sprite.y += 16
          sprite.opacity -= 12
        end
        if @type == 3
          sprite.x -= 2
          sprite.y += 8
          sprite.opacity -= 8
        end
        x = sprite.x - @ox
        y = sprite.y - @oy
        if sprite.opacity < 64 or x < -50 or x > 750 or y < -300 or y > 500
          sprite.x = rand(800) - 50 + @ox
          sprite.y = rand(800) - 200 + @oy
          sprite.opacity = 255
        end
      end
    end
    attr_reader :type
    attr_reader :max
    attr_reader :ox
    attr_reader :oy
  end
end