Added "wallpaper" component

Added common dimensions script

scripts/common/dimensions.lua

@@ -0,0 +1,48 @@
+local dimtable = {
+    design = {
+        width = 1080,
+        height = 1920
+    },
+    screen = {
+        width = nil,
+        height = nil
+    },
+    view = {
+        width = nil,
+        height = nil
+    },
+    ratio = {
+        landscapeUW = 21 / 9,
+        landscapeWide = 16 / 9,
+        landscapeStd = 4 / 3,
+        portrait = 9 / 16
+    }
+}
+
+dimtable.screen.width, dimtable.screen.height = game.GetResolution()
+
+local function transformToDesignSpace()
+    gfx.Translate((dimtable.screen.width - dimtable.view.width) / 2, 0);
+    gfx.Scale(dimtable.view.width / dimtable.design.width, dimtable.view.height / dimtable.design.height);
+    gfx.Scissor(0, 0, dimtable.design.width, dimtable.design.height);
+end
+
+local function updateResolution(ratio)
+    if not ratio then
+        ratio = dimtable.ratio.portrait
+    end
+
+    local screenWidth, screenHeight = game.GetResolution()
+    if screenWidth ~= dimtable.screen.width or screenHeight ~= dimtable.screen.height then
+        dimtable.screen.width, dimtable.screen.height = screenWidth, screenHeight
+        dimtable.view.width, dimtable.view.height = ratio * dimtable.screen.height, dimtable.screen.height
+    end
+end
+
+
+-- return by reference trickery:
+
+local t = dimtable
+t.transformToDesignSpace = transformToDesignSpace
+t.updateResolution = updateResolution
+return t

scripts/components/wallpaper.lua

@@ -0,0 +1,23 @@
+local Dim = require("common.dimensions")
+
+local backgroundImage = gfx.CreateSkinImage("bg_pattern.png", gfx.IMAGE_REPEATX | gfx.IMAGE_REPEATY)
+local bgImageWidth, bgImageHeight = gfx.ImageSize(backgroundImage)
+
+local patternAngle = 0
+local patternAlpha = 0.2
+
+function render()
+    gfx.Save()
+    gfx.ResetTransform()
+
+    gfx.BeginPath()
+    gfx.Rect(0, 0, Dim.screen.width, Dim.screen.height)
+    gfx.FillPaint(gfx.ImagePattern(0, 0, bgImageWidth, bgImageHeight, patternAngle, backgroundImage, patternAlpha))
+    gfx.Fill()
+    
+    gfx.Restore()
+end
+
+return {
+    render = render
+}