75 lines
2 KiB
Lua
75 lines
2 KiB
Lua
require 'tablefuncs'
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require 'gridpoint'
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require 'port'
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---@param xcorner GridPoint
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---@param size GridPoint
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---@return GridPoint
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local function nextxcorner( xcorner, size )
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-- We're looking for old size
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local cornerLookup1 = {
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GridPoint:new( 0, 0 ),
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GridPoint:new( size.y - 1, 0 ),
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GridPoint:new( size.y - 1, size.x - 1 ),
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GridPoint:new( 0, size.x - 1 )
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}
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local cornerLookup2 = {
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GridPoint:new( 0, 0 ),
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GridPoint:new( size.x - 1, 0 ),
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GridPoint:new( size.x - 1, size.y - 1 ),
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GridPoint:new( 0, size.y - 1 )
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}
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local index = TableFind(cornerLookup1, xcorner, function(xc, value) return value:equals(xc) end)
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if index < #cornerLookup1 then
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index = index + 1
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else
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index = 0
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end
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return cornerLookup2[index]
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end
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---@class Mechanism
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---@field position GridPoint
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---@field size GridPoint
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---@field xcorner GridPoint
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---@field ports Port[]
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---@field color table
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Mechanism = {
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position = GridPoint:new( 0, 0 ),
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size = GridPoint:new( 1, 1 ),
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xcorner = GridPoint:new( 0, 0 ),
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ports = {},
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color = { 0.5, 0.5, 0.5, 1 }
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}
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function Mechanism:new( position, size, ports, color )
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local mechanism = {
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position = position or self.position,
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size = size or self.size,
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ports = ports or {},
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color = color or self.color
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}
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setmetatable( mechanism, { __index = self } )
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return mechanism
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end
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function Mechanism:rotateClockwise()
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self.size = GridPoint:new(self.size.y, self.size.x)
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self.xcorner = nextxcorner(self.xcorner, self.size)
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for _, port in ipairs(self.ports) do
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port:rotateClockwise()
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end
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end
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function Mechanism:draw()
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love.graphics.setColor(self.color)
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local x, y = self.position:globalCoords()
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local w, h = self.size:globalCoords()
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love.graphics.rectangle("fill", x, y, w, h)
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for _, port in ipairs(self.ports) do
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local offset = GridPoint:new( self.position.x + self.xcorner.x, self.position.y + self.xcorner.y )
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port:draw( offset )
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end
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end
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