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local Textbox = require("textbox")
local HUD = {}
HUD.__index = HUD
HUD.slots = {
{ enabled = false },
{ enabled = false },
{ enabled = false },
{ enabled = false },
}
local SLOT_SIZE = 16
local SLOT_SPACING = 8
local LOREM = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."
local function createMissingTexture()
local size = SLOT_SIZE
local half = size / 2
local imgData = love.image.newImageData(size, size)
for y = 0, size - 1 do
for x = 0, size - 1 do
local inBlack = (x < half and y < half) or (x >= half and y >= half)
if inBlack then
imgData:setPixel(x, y, 0, 0, 0, 1)
else
imgData:setPixel(x, y, 1, 0, 1, 1)
end
end
end
local img = love.graphics.newImage(imgData)
img:setFilter("nearest", "nearest")
return img
end
function HUD:new()
local self = setmetatable({}, HUD)
self.missingTexture = createMissingTexture()
self.textbox = Textbox:new()
self.hoveredSlot = nil
self.slotRects = {}
self.screenW = 0
self.screenH = 0
self.drawScale = 1
return self
end
function HUD:computeSlotRects(screenW, screenH, drawScale)
local slotW = SLOT_SIZE * drawScale
local slotH = SLOT_SIZE * drawScale
local spacing = SLOT_SPACING * drawScale
local totalW = 4 * slotW + 3 * spacing
local startX = math.floor((screenW - totalW) / 2)
local startY = math.floor(screenH / 2 - slotH / 2)
local rects = {}
for i = 1, 4 do
rects[i] = {
x = startX + (i - 1) * (slotW + spacing),
y = startY,
w = slotW,
h = slotH,
}
end
return rects
end
function HUD:update(dt, screenW, screenH, drawScale)
self.screenW = screenW
self.screenH = screenH
self.drawScale = drawScale
self.slotRects = self:computeSlotRects(screenW, screenH, drawScale)
local mx, my = love.mouse.getPosition()
local prevHovered = self.hoveredSlot
self.hoveredSlot = nil
for i, rect in ipairs(self.slotRects) do
if mx >= rect.x and mx < rect.x + rect.w
and my >= rect.y and my < rect.y + rect.h then
self.hoveredSlot = i
break
end
end
if self.hoveredSlot and self.hoveredSlot ~= prevHovered then
local rect = self.slotRects[self.hoveredSlot]
local centerX = screenW / 2
local topY = rect.y + rect.h + 8 * drawScale
self.textbox:show(LOREM, { centerX, topY, "center" }, "show", {
fontSize = 16,
centeredText = true,
wrapToFit = true,
maxChars = 40,
})
self.textbox.y = topY + self.textbox.height / 2
elseif not self.hoveredSlot and prevHovered then
self.textbox:hide()
end
self.textbox:update(dt)
end
function HUD:mousepressed(mx, my, button)
if button ~= 1 then return end
for i, rect in ipairs(self.slotRects) do
if mx >= rect.x and mx < rect.x + rect.w
and my >= rect.y and my < rect.y + rect.h then
HUD.slots[i].enabled = not HUD.slots[i].enabled
break
end
end
end
function HUD:draw()
local screenW = self.screenW
local screenH = self.screenH
local drawScale = self.drawScale
love.graphics.setColor(0, 0, 0, 0.4)
love.graphics.rectangle("fill", 0, 0, screenW, screenH)
for i, rect in ipairs(self.slotRects) do
love.graphics.setColor(1, 1, 1, 1)
love.graphics.draw(self.missingTexture, rect.x, rect.y, 0, drawScale, drawScale)
if HUD.slots[i].enabled then
love.graphics.setColor(0, 1, 0, 0.3)
love.graphics.rectangle("fill", rect.x, rect.y, rect.w, rect.h)
end
if self.hoveredSlot == i then
love.graphics.setColor(1, 1, 0, 1)
love.graphics.setLineWidth(2)
else
love.graphics.setColor(1, 1, 1, 0.5)
love.graphics.setLineWidth(1)
end
love.graphics.rectangle("line", rect.x, rect.y, rect.w, rect.h)
end
love.graphics.setLineWidth(1)
love.graphics.setColor(1, 1, 1, 1)
self.textbox:draw()
end
return HUD
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