Class: Engine::Input

Inherits:
Object
  • Object
show all
Defined in:
lib/engine/input.rb

Constant Summary collapse

RELEASE =

Key action constants

0
PRESS = 
1
REPEAT = 
2
KEY_SPACE =

Keyboard keys

32
KEY_APOSTROPHE = 
39
KEY_COMMA = 
44
KEY_MINUS = 
45
KEY_PERIOD = 
46
KEY_SLASH = 
47
KEY_0 = 
48
KEY_1 = 
49
KEY_2 = 
50
KEY_3 = 
51
KEY_4 = 
52
KEY_5 = 
53
KEY_6 = 
54
KEY_7 = 
55
KEY_8 = 
56
KEY_9 = 
57
KEY_SEMICOLON = 
59
KEY_EQUAL = 
61
KEY_A = 
65
KEY_B = 
66
KEY_C = 
67
KEY_D = 
68
KEY_E = 
69
KEY_F = 
70
KEY_G = 
71
KEY_H = 
72
KEY_I = 
73
KEY_J = 
74
KEY_K = 
75
KEY_L = 
76
KEY_M = 
77
KEY_N = 
78
KEY_O = 
79
KEY_P = 
80
KEY_Q = 
81
KEY_R = 
82
KEY_S = 
83
KEY_T = 
84
KEY_U = 
85
KEY_V = 
86
KEY_W = 
87
KEY_X = 
88
KEY_Y = 
89
KEY_Z = 
90
KEY_LEFT_BRACKET = 
91
KEY_BACKSLASH = 
92
KEY_RIGHT_BRACKET = 
93
KEY_GRAVE_ACCENT = 
96
KEY_ESCAPE = 
256
KEY_ENTER = 
257
KEY_TAB = 
258
KEY_BACKSPACE = 
259
KEY_INSERT = 
260
KEY_DELETE = 
261
KEY_RIGHT = 
262
KEY_LEFT = 
263
KEY_DOWN = 
264
KEY_UP = 
265
KEY_PAGE_UP = 
266
KEY_PAGE_DOWN = 
267
KEY_HOME = 
268
KEY_END = 
269
KEY_CAPS_LOCK = 
280
KEY_SCROLL_LOCK = 
281
KEY_NUM_LOCK = 
282
KEY_PRINT_SCREEN = 
283
KEY_PAUSE = 
284
KEY_F1 = 
290
KEY_F2 = 
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KEY_F3 = 
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KEY_F4 = 
293
KEY_F5 = 
294
KEY_F6 = 
295
KEY_F7 = 
296
KEY_F8 = 
297
KEY_F9 = 
298
KEY_F10 = 
299
KEY_F11 = 
300
KEY_F12 = 
301
KEY_LEFT_SHIFT = 
340
KEY_LEFT_CONTROL = 
341
KEY_LEFT_ALT = 
342
KEY_LEFT_SUPER = 
343
KEY_RIGHT_SHIFT = 
344
KEY_RIGHT_CONTROL = 
345
KEY_RIGHT_ALT = 
346
KEY_RIGHT_SUPER = 
347
MOUSE_BUTTON_1 =

Mouse buttons

0
MOUSE_BUTTON_2 = 
1
MOUSE_BUTTON_3 = 
2
MOUSE_BUTTON_4 = 
3
MOUSE_BUTTON_5 = 
4
MOUSE_BUTTON_6 = 
5
MOUSE_BUTTON_7 = 
6
MOUSE_BUTTON_8 = 
7
MOUSE_BUTTON_LEFT = 
MOUSE_BUTTON_1
MOUSE_BUTTON_RIGHT = 
MOUSE_BUTTON_2
MOUSE_BUTTON_MIDDLE = 
MOUSE_BUTTON_3

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.close_key ⇒ Object

Returns the value of attribute close_key.



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# File 'lib/engine/input.rb', line 113

def close_key
  @close_key
end

.debug_key ⇒ Object

Returns the value of attribute debug_key.



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# File 'lib/engine/input.rb', line 113

def debug_key
  @debug_key
end

.fullscreen_key ⇒ Object

Returns the value of attribute fullscreen_key.



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# File 'lib/engine/input.rb', line 113

def fullscreen_key
  @fullscreen_key
end

Class Method Details

._on_key_down(key) ⇒ Object 



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# File 'lib/engine/input.rb', line 156

def self._on_key_down(key)
  keys[key] = :down

  if close_key && key == close_key
    Engine.close
  end

  if debug_key && key == debug_key
    Engine::Debugging.breakpoint { binding.pry }
  end

  if fullscreen_key && key == fullscreen_key
    Engine::Window.toggle_full_screen
  end
end

._on_key_up(key) ⇒ Object 



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# File 'lib/engine/input.rb', line 172

def self._on_key_up(key)
  keys[key] = :up
end

.init ⇒ Object 



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# File 'lib/engine/input.rb', line 116

def self.init
  @key_callback = GLFW::create_callback(:GLFWkeyfun) do |window, key, scancode, action, mods|
    Input.key_callback(key, action)
  end
  GLFW.SetKeyCallback(Window.window, @key_callback)

  @cursor_pos_callback = GLFW::create_callback(:GLFWcursorposfun) do |window, x, y|
    Input.mouse_callback(x, y)
  end
  GLFW.SetCursorPosCallback(Window.window, @cursor_pos_callback)

  @mouse_button_callback = GLFW::create_callback(:GLFWmousebuttonfun) do |window, button, action, mods|
    Input.mouse_button_callback(button, action)
  end
  GLFW.SetMouseButtonCallback(Window.window, @mouse_button_callback)
end

.key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/engine/input.rb', line 133

def self.key?(key)
  keys[key] == :down || keys[key] == :held
end

.key_callback(key, action) ⇒ Object 



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# File 'lib/engine/input.rb', line 176

def self.key_callback(key, action)
  if action == PRESS
    _on_key_down(key)
  elsif action == RELEASE
    _on_key_up(key)
  end
end

.key_down?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/engine/input.rb', line 137

def self.key_down?(key)
  keys[key] == :down
end

.key_up?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/engine/input.rb', line 141

def self.key_up?(key)
  keys[key] == :up
end

.keys ⇒ Object 



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# File 'lib/engine/input.rb', line 212

def self.keys
  @keys ||= {}
end

.mouse_button_callback(button, action) ⇒ Object 



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# File 'lib/engine/input.rb', line 191

def self.mouse_button_callback(button, action)
  if action == PRESS
    keys[button] = :down
  elsif action == RELEASE
    keys[button] = :up
  end
end

.mouse_callback(x, y) ⇒ Object 



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# File 'lib/engine/input.rb', line 184

def self.mouse_callback(x, y)
  @mouse_pos_updated = true
  @old_mouse_pos = @mouse_pos
  # Y-down coordinate system: use GLFW y directly
  @mouse_pos = Vector[x, y]
end

.mouse_delta ⇒ Object 



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# File 'lib/engine/input.rb', line 149

def self.mouse_delta
  return Vector[0, 0] if @old_mouse_pos.nil?
  return Vector[0, 0] unless @mouse_pos_updated

  @mouse_pos - @old_mouse_pos
end

.mouse_pos ⇒ Object 



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# File 'lib/engine/input.rb', line 145

def self.mouse_pos
  @mouse_pos
end

.update_key_states ⇒ Object 



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# File 'lib/engine/input.rb', line 199

def self.update_key_states
  @mouse_pos_updated = false
  keys.each do |key, state|
    if state == :down
      keys[key] = :held
    elsif state == :up
      keys.delete(key)
    end
  end
end