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--- `Controller`
-- Module to manage player input.
-- It uses `love.keypressed`, `love.keyreleased`, `love.gamepadreleased`, `love.gamepadpressed`, `love.joystickadded`, so be sure not to use them by yourself.
-- Rather than that use functions provided by this module: `Controller.controlpressed` and `Controller.controlreleased`.
Controller = {
sets = {},
axes = {},
deadzone = .3
}
-- Declared to avoid calling nil. Be sure to define yours after this line is performed.
function Controller.controlpressed(set, action, key) end
function Controller.controlreleased(set, action, key) end
-- Create new controls set.
function Controller.registerSet(left, right, up, down, attack, jump, joystick)
if not Controller.isJoystickUnique(joystick) then return end
local set = {}
set.left = left or "left"
set.right = right or "right"
set.up = up or "up"
set.down = down or "down"
set.attack = attack or "return"
set.jump = jump or "rshift"
set.joystick = joystick
table.insert(Controller.sets, set)
print(set, left, right, up, down, attack, jump, joystick)
return set
end
-- Reset table of controls sets.
function Controller.reset()
local t = {}
Controller.sets = t
end
-- Get table of controls sets.
function Controller.getSets()
return Controller.sets
end
-- Checks if given joystick is unique in current set of Controller sets
function Controller.isJoystickUnique(joystick)
if joystick ~= nil then
for _,set in pairs(Controller.sets) do
if set.joystick == joystick then return false end
end
end
return true
end
-- Tests all sets if they have control assigned to given key and joystick.
function Controller.testSets(key, joystick)
for i,set in pairs(Controller.sets) do
local action = Controller.testControl(set, key, joystick)
if action ~= nil then
return set, action
end
end
return nil, nil
end
-- Tests given set if it has controll assigned to given key and joystick.
function Controller.testControl(set, key, joystick)
-- First test if it is joystick and if it is correct one
if joystick == set.joystick then
if key == set.left then
return "left"
elseif key == set.right then
return "right"
elseif key == set.up then
return "up"
elseif key == set.down then
return "down"
elseif key == set.attack then
return "attack"
elseif key == set.jump then
return "jump"
end
end
end
-- Checks if given action of given set is down
function Controller.isDown(set, action)
if set ~= nil then
if set.joystick == nil then
return love.keyboard.isDown(set[action])
else
if not Controller.isAxis(set[action]) then
return set.joystick:isGamepadDown(set[action])
else
return Controller.getAxisState(set.joystick, set[action])
end
end
end
end
-- Return key name from given axis and value
function Controller.createAxisName(axis, value)
local key = "axis:"..axis
if value == 0 then
key = key.."0"
elseif value > 0 then
key = key.."+"
else
key = key.."-"
end
return key
end
-- Checks if given key is an axis
function Controller.isAxis(key)
if string.find(key, "axis:") then
return true
else
return false
end
end
-- Checks state of key assigned to axis of given joystick
function Controller.getAxisState(joystick, key)
if Controller.axes[joystick] then
local state = Controller.axes[joystick][key]
if state ~= nil then
return state
else
return false
end
end
end
-- Sets state of key assigned to axis of given joystick
function Controller.setAxisState(joystick, key, state)
if Controller.axes[joystick] == nil then
Controller.axes[joystick] = {}
end
Controller.axes[joystick][key] = state
end
-- Simulate pressing key on an axis
function Controller.axisPress(joystick, axis, value)
local key = Controller.createAxisName(axis, value)
local set, action = Controller.testSets(key, joystick)
local state = Controller.getAxisState(joystick, key)
if not state then
print(joystick, set, action, key)
Controller.setAxisState(joystick, key, true)
Controller.controlpressed(set, action, key)
end
end
-- Simulate releasing key on an axis
function Controller.axisRelease(joystick, axis, value)
local key = Controller.createAxisName(axis, value)
local set, action = Controller.testSets(key, joystick)
local state = Controller.getAxisState(joystick, key)
if state then
Controller.setAxisState(joystick, key,false)
Controller.controlreleased(set, action, key)
end
end
-- Callbacks from LÖVE2D
-- Load gamepad mappings from db file and init module
function Controller.load()
love.joystick.loadGamepadMappings("gamecontrollerdb.txt")
end
-- Gamepad input callbacks
function Controller.gamepadaxis(joystick, axis, value)
if value ~= 0 then
if math.abs(value) > Controller.deadzone then
Controller.axisPress(joystick, axis, value)
else
Controller.axisRelease(joystick, axis, value)
end
else
Controller.axisRelease(joystick, axis, 1)
Controller.axisRelease(joystick, axis, -1)
end
end
function Controller.gamepadpressed(joystick, key)
local set, action = Controller.testSets(key, joystick)
print(joystick, set, action, key)
Controller.controlpressed(set, action, key)
end
function Controller.gamepadreleased(joystick, key)
local set, action = Controller.testSets(key, joystick)
Controller.controlreleased(set, action, key)
end
-- Keyboard input callbacks
function Controller.keypressed(key)
local set, action = Controller.testSets(key, nil)
print(nil, set, action, key)
Controller.controlpressed(set, action, key)
end
function Controller.keyreleased(key)
local set, action = Controller.testSets(key, nil)
Controller.controlreleased(set, action, key)
end
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