skin studio updates, save sync CLOSES #1533

src/render/Playfield.lua

@@ -0,0 +1,81 @@
+local GameViewport = require("src.render.GameViewport")
+local TouchSkin = require("src.core.TouchSkin")
+
+local Playfield = {}
+
+Playfield.WIDTH, Playfield.HEIGHT = 160, 144
+
+Playfield.entered = false
+Playfield.box = nil
+
+local function clampRect(x, y, w, h, sw, sh)
+  if type(w) ~= "number" or type(h) ~= "number" then return nil end
+  if w ~= w or h ~= h then return nil end
+  x = math.floor(tonumber(x) or 0)
+  y = math.floor(tonumber(y) or 0)
+  w, h = math.floor(w), math.floor(h)
+  if x < 0 then w, x = w + x, 0 end
+  if y < 0 then h, y = h + y, 0 end
+  if x + w > sw then w = sw - x end
+  if y + h > sh then h = sh - y end
+  if w < 1 or h < 1 then return nil end
+  return x, y, w, h
+end
+
+function Playfield.cutout(sw, sh)
+  if Playfield.entered then return nil end
+  if type(sw) ~= "number" or type(sh) ~= "number" then return nil end
+  if sw < 1 or sh < 1 then return nil end
+  if type(TouchSkin.viewport) ~= "function" then return nil end
+  local ok, x, y, w, h, fill, expand = pcall(TouchSkin.viewport, sw, sh)
+  if not ok then return nil end
+  local cx, cy, cw, ch = clampRect(x, y, w, h, sw, sh)
+  if not cx then return nil end
+  return cx, cy, cw, ch, fill == true, expand == true
+end
+
+function Playfield.rect(sw, sh)
+  local x, y, w, h, _, expand = Playfield.cutout(sw, sh)
+  if not x then return 0, 0, sw or 0, sh or 0, false end
+  if expand then return x, y, w, h, true end
+  local s = math.max(1, math.floor(math.min(w / Playfield.WIDTH,
+    h / Playfield.HEIGHT)))
+  local pw = math.min(w, Playfield.WIDTH * s)
+  local ph = math.min(h, Playfield.HEIGHT * s)
+  return x + math.floor((w - pw) / 2), y + math.floor((h - ph) / 2), pw, ph, true
+end
+
+function Playfield.enter(x, y, w, h)
+  Playfield.entered = true
+  Playfield.box = { x = x, y = y, w = w, h = h }
+end
+
+function Playfield.leave()
+  Playfield.entered = false
+  Playfield.box = nil
+end
+
+function Playfield.dimensions()
+  if Playfield.entered and Playfield.box then
+    return Playfield.box.w, Playfield.box.h
+  end
+  return GameViewport.dimensions()
+end
+
+function Playfield.push(sw, sh)
+  local x, y, w, h, active = Playfield.rect(sw, sh)
+  local G = love.graphics
+  G.push("all")
+  if active then G.setScissor(x, y, w, h) end
+  G.translate(x, y)
+  Playfield.enter(x, y, w, h)
+  return w, h, x, y, active
+end
+
+function Playfield.pop()
+  Playfield.leave()
+  love.graphics.setScissor()
+  love.graphics.pop()
+end
+
+return Playfield