diff options
Diffstat (limited to 'hud.lua')
| -rw-r--r-- | hud.lua | 146 |
1 files changed, 146 insertions, 0 deletions
@@ -0,0 +1,146 @@ +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 |