Class: Gembots::Robot

Inherits:
Object
  • Object
show all
Defined in:
lib/gembots/bot.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(window) ⇒ Robot

Returns a new instance of Robot.



6
7
8
9
10
11
12
 
# File 'lib/gembots/bot.rb', line 6

def initialize window
  @actions = []
  @window = window
  @images = Gosu::Image::load_tiles(window, "media/tank.png", 32, 32, false)
  @image = Gosu::Image.new window, "media/cannon.png", false
  @x = @y = @angle = @cur_image = 0.0
end

Instance Attribute Details

#actions ⇒ Object (readonly)

Returns the value of attribute actions.



4
5
6
 
# File 'lib/gembots/bot.rb', line 4

def actions
  @actions
end

#angle ⇒ Object (readonly)

Returns the value of attribute angle.



4
5
6
 
# File 'lib/gembots/bot.rb', line 4

def angle
  @angle
end

#x ⇒ Object (readonly)

Returns the value of attribute x.



4
5
6
 
# File 'lib/gembots/bot.rb', line 4

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



4
5
6
 
# File 'lib/gembots/bot.rb', line 4

def y
  @y
end

Instance Method Details

#draw ⇒ Object 



59
60
61
62
 
# File 'lib/gembots/bot.rb', line 59

def draw
  @images[@cur_image].draw_rot @x, @y, 1, @angle - 90 % 360
  @image.draw_rot @x, @y, 1, @angle - 90 % 360
end

#fire ⇒ Object 



64
65
66
 
# File 'lib/gembots/bot.rb', line 64

def fire
  @actions << [:fire]
end

#move(dist = 10) ⇒ Object 



22
23
24
 
# File 'lib/gembots/bot.rb', line 22

def move dist=10
  @actions << [:move, dist]
end

#turn(angle = 10) ⇒ Object 



18
19
20
 
# File 'lib/gembots/bot.rb', line 18

def turn angle=10
  @actions << [:turn, angle]
end

#update ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/gembots/bot.rb', line 26

def update
  return if @actions.empty?
  case @actions[0][0]
  when :move then
    # I probably should implement dist = @actions[0][1]; dist %= 0.5 or something
    # but right now I'm tired, and worried I will screw up the math if I try that...
    dist = @actions[0][1] <= 0.9 ? @actions[0][1] : 1.0
    @x += Gosu::offset_x @angle, dist
    @y += Gosu::offset_y @angle, dist
    @x %= 640
    @y %= 480

    @cur_image += 0.1
    @cur_image %= 7.0

    @actions[0][1] -= 0.5
    @actions.shift if @actions[0][1] == 0.0

  when :turn then
    deg = @actions[0][1] <= 9 ? @actions[0][1] : 10

    @angle += deg
    @angle %= 360
    @actions[0][1] -= deg

    @actions.shift if @actions[0][1] == 0

  when :fire
    @window.spawn_proj self
    @actions.shift
  end
end

#warp(x, y) ⇒ Object 



14
15
16
 
# File 'lib/gembots/bot.rb', line 14

def warp x, y
  @x, @y = x, y
end