draw.lua

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local modes = {
    [true] = {
        [0] = true,
        [1] = false
    },
    [false] = {
        [0] = 'fill',
        [1] = 'line'
    }
}
 
local function color(c)
    local DIV = love.wiimote and 1 or 255
    local R = bit.band(bit.rshift(c, 24), 0xFF)/DIV
    local G = bit.band(bit.rshift(c, 16), 0xFF)/DIV
    local B = bit.band(bit.rshift(c, 8), 0xFF)/DIV
    local A = bit.band(bit.rshift(c, 0), 0xFF)/DIV
    love.graphics.setColor(R, G, B, A)
end
 
local function rect(a,b,c,d,e,f)
    love.graphics.rectangle(modes[love.wiimote ~= nil][a], b, c, d, e)
end
 
--! @todo support WII
local function text(x, y, text)
    if love.wiimote then return 32 end
    local font = love.graphics.getFont()
    local t = text and tostring(text) or tostring(x)
    local n = select(2, t:gsub('\n', '')) + 1
    local w = font:getWidth(t)
    local h = (font:getHeight('A') * n) + (font:getLineHeight() * n)
    if x and y then
        love.graphics.print(t, x, y)
    end
    return w, h
end
 
local function line(x1, y1, x2, y2)
    love.graphics.line(x1, y1, x2, y2)
end
 
local function triangle(mode, x1, y1, x2, y2, x3, y3)
    love.graphics.line(x1, y1, x2, y2)
    love.graphics.line(x2, y2, x3, y3)
    if mode <= 1 then
        love.graphics.line(x1, y1, x3, y3)
    end
end
 
local function font(name, size)
    if type(name) == 'number' and not size then
        size = name
        name = 'Tiresias'
    end
    local index = 'font_'..tostring(name)..tostring(size)
    if not _G[index] then
        _G[index] = love.graphics.newFont(size)
    end
    love.graphics.setFont(_G[index])
end
 
local function install(std, game, application)
    application.callbacks.draw = application.callbacks.draw or function() end
 
    std.draw.color=color
    std.draw.rect=rect
    std.draw.text=text
    std.draw.line=line
    std.draw.font=font
 
    std.draw.clear = function(c)
        color(c)
        love.graphics.rectangle(modes[love.wiimote ~= nil][0], 0, 0, game.width, game.height)
    end
 
    local event_draw = function()
        application.callbacks.draw(std, game)
    end
 
    return {
        event={draw=event_draw},
        std={draw=std.draw}
    }
end
 
local P = {
    install = install,
    triangle=triangle
}
 
return P