added CC0 assets from kenney.nl to replace the existing ones

docs/README.md

@@ -24,27 +24,27 @@ Here some ideas for improving this tiny engine:
 ## Build / Dev Support
 - [ ] add a test rig either with Snitch or Catch2
 - [ ] write some reasonable testcases
+- [ ] add CPU and GPU benchmarks to address various issues
 
 
 # Issues
 
 
-
 ```sh
  Performance counter stats for 'bin/paradiso_pong':
 
-            555,35 msec task-clock:u                     #    0,042 CPUs utilized             
+            555,35 msec task-clock:u                     #    0,042 CPUs utilized
-                 0      context-switches:u               #    0,000 /sec                      
+                 0      context-switches:u               #    0,000 /sec
-                 0      cpu-migrations:u                 #    0,000 /sec                      
+                 0      cpu-migrations:u                 #    0,000 /sec
-             4.072      page-faults:u                    #    7,332 K/sec                     
+             4.072      page-faults:u                    #    7,332 K/sec
-       319.484.735      cycles:u                         #    0,575 GHz                       
+       319.484.735      cycles:u                         #    0,575 GHz
-       358.165.995      instructions:u                   #    1,12  insn per cycle            
+       358.165.995      instructions:u                   #    1,12  insn per cycle
-        86.037.942      branches:u                       #  154,926 M/sec                     
+        86.037.942      branches:u                       #  154,926 M/sec
-         2.469.068      branch-misses:u                  #    2,87% of all branches           
+         2.469.068      branch-misses:u                  #    2,87% of all branches
 
       13,092775373 seconds time elapsed
 
        0,311565000 seconds user
        0,247491000 seconds sys
 ```
-above run with `perf stat bin/paradiso_pong` shows some really bad performance issues.
+above run with `perf stat bin/paradiso_pong` shows some really bad performance issues.

examples/quickwings/assets/tappybird/Spritesheet/planes.xml

@@ -0,0 +1,14 @@
+<TextureAtlas imagePath="sheet.png">
+	<SubTexture name="planeBlue1.png" x="0" y="73" width="88" height="73"/>
+	<SubTexture name="planeBlue2.png" x="0" y="0" width="88" height="73"/>
+	<SubTexture name="planeBlue3.png" x="0" y="365" width="88" height="73"/>
+	<SubTexture name="planeGreen1.png" x="88" y="219" width="88" height="73"/>
+	<SubTexture name="planeGreen2.png" x="88" y="146" width="88" height="73"/>
+	<SubTexture name="planeGreen3.png" x="88" y="73" width="88" height="73"/>
+	<SubTexture name="planeRed1.png" x="88" y="0" width="88" height="73"/>
+	<SubTexture name="planeRed2.png" x="0" y="438" width="88" height="73"/>
+	<SubTexture name="planeRed3.png" x="88" y="292" width="88" height="73"/>
+	<SubTexture name="planeYellow1.png" x="0" y="292" width="88" height="73"/>
+	<SubTexture name="planeYellow2.png" x="0" y="219" width="88" height="73"/>
+	<SubTexture name="planeYellow3.png" x="0" y="146" width="88" height="73"/>
+</TextureAtlas>

examples/quickwings/assets/tappybird/Spritesheet/sheet.xml

@@ -0,0 +1,81 @@
+<TextureAtlas imagePath="sheet.png">
+	<SubTexture name="UIbg.png" x="0" y="986" width="264" height="264"/>
+	<SubTexture name="background.png" x="0" y="355" width="800" height="480"/>
+	<SubTexture name="buttonLarge.png" x="0" y="1250" width="196" height="70"/>
+	<SubTexture name="buttonSmall.png" x="0" y="1320" width="136" height="80"/>
+	<SubTexture name="groundDirt.png" x="0" y="0" width="808" height="71"/>
+	<SubTexture name="groundGrass.png" x="0" y="142" width="808" height="71"/>
+	<SubTexture name="groundIce.png" x="0" y="71" width="808" height="71"/>
+	<SubTexture name="groundRock.png" x="0" y="284" width="808" height="71"/>
+	<SubTexture name="groundSnow.png" x="0" y="213" width="808" height="71"/>
+	<SubTexture name="letterA.png" x="412" y="835" width="61" height="64"/>
+	<SubTexture name="letterB.png" x="487" y="1537" width="50" height="66"/>
+	<SubTexture name="letterC.png" x="460" y="977" width="52" height="66"/>
+	<SubTexture name="letterD.png" x="432" y="1613" width="54" height="66"/>
+	<SubTexture name="letterE.png" x="511" y="1965" width="45" height="64"/>
+	<SubTexture name="letterF.png" x="512" y="963" width="44" height="64"/>
+	<SubTexture name="letterG.png" x="460" y="1107" width="52" height="66"/>
+	<SubTexture name="letterH.png" x="473" y="835" width="51" height="64"/>
+	<SubTexture name="letterI.png" x="524" y="835" width="22" height="64"/>
+	<SubTexture name="letterJ.png" x="512" y="1027" width="42" height="66"/>
+	<SubTexture name="letterK.png" x="432" y="1821" width="53" height="64"/>
+	<SubTexture name="letterL.png" x="512" y="899" width="44" height="64"/>
+	<SubTexture name="letterM.png" x="392" y="1967" width="66" height="64"/>
+	<SubTexture name="letterN.png" x="432" y="1679" width="53" height="64"/>
+	<SubTexture name="letterO.png" x="418" y="1284" width="60" height="66"/>
+	<SubTexture name="letterP.png" x="489" y="1427" width="48" height="65"/>
+	<SubTexture name="letterQ.png" x="418" y="1205" width="60" height="79"/>
+	<SubTexture name="letterR.png" x="478" y="1249" width="51" height="65"/>
+	<SubTexture name="letterS.png" x="511" y="1899" width="46" height="66"/>
+	<SubTexture name="letterT.png" x="460" y="1043" width="52" height="64"/>
+	<SubTexture name="letterU.png" x="485" y="1757" width="51" height="66"/>
+	<SubTexture name="letterV.png" x="400" y="913" width="61" height="64"/>
+	<SubTexture name="letterW.png" x="136" y="1320" width="76" height="64"/>
+	<SubTexture name="letterX.png" x="418" y="1409" width="58" height="64"/>
+	<SubTexture name="letterY.png" x="432" y="1473" width="57" height="64"/>
+	<SubTexture name="letterZ.png" x="486" y="1613" width="50" height="64"/>
+	<SubTexture name="medalBronze.png" x="0" y="1400" width="114" height="119"/>
+	<SubTexture name="medalGold.png" x="0" y="1519" width="114" height="119"/>
+	<SubTexture name="medalSilver.png" x="0" y="1638" width="114" height="119"/>
+	<SubTexture name="number0.png" x="432" y="1743" width="53" height="78"/>
+	<SubTexture name="number1.png" x="512" y="1093" width="37" height="76"/>
+	<SubTexture name="number2.png" x="477" y="1350" width="51" height="77"/>
+	<SubTexture name="number3.png" x="485" y="1679" width="51" height="78"/>
+	<SubTexture name="number4.png" x="432" y="1537" width="55" height="76"/>
+	<SubTexture name="number5.png" x="485" y="1823" width="50" height="76"/>
+	<SubTexture name="number6.png" x="432" y="1885" width="53" height="77"/>
+	<SubTexture name="number7.png" x="478" y="1173" width="51" height="76"/>
+	<SubTexture name="number8.png" x="461" y="899" width="51" height="78"/>
+	<SubTexture name="number9.png" x="458" y="1962" width="53" height="77"/>
+	<SubTexture name="planeBlue1.png" x="330" y="1371" width="88" height="73"/>
+	<SubTexture name="planeBlue2.png" x="372" y="1132" width="88" height="73"/>
+	<SubTexture name="planeBlue3.png" x="222" y="1562" width="88" height="73"/>
+	<SubTexture name="planeGreen1.png" x="114" y="1639" width="88" height="73"/>
+	<SubTexture name="planeGreen2.png" x="216" y="1951" width="88" height="73"/>
+	<SubTexture name="planeGreen3.png" x="222" y="1489" width="88" height="73"/>
+	<SubTexture name="planeRed1.png" x="216" y="1878" width="88" height="73"/>
+	<SubTexture name="planeRed2.png" x="372" y="1059" width="88" height="73"/>
+	<SubTexture name="planeRed3.png" x="372" y="986" width="88" height="73"/>
+	<SubTexture name="planeYellow1.png" x="304" y="1967" width="88" height="73"/>
+	<SubTexture name="planeYellow2.png" x="330" y="1298" width="88" height="73"/>
+	<SubTexture name="planeYellow3.png" x="330" y="1225" width="88" height="73"/>
+	<SubTexture name="puffLarge.png" x="114" y="1712" width="42" height="35"/>
+	<SubTexture name="puffSmall.png" x="196" y="1250" width="25" height="21"/>
+	<SubTexture name="rock.png" x="114" y="1400" width="108" height="239"/>
+	<SubTexture name="rockDown.png" x="324" y="1489" width="108" height="239"/>
+	<SubTexture name="rockGrass.png" x="0" y="1757" width="108" height="239"/>
+	<SubTexture name="rockGrassDown.png" x="264" y="986" width="108" height="239"/>
+	<SubTexture name="rockIce.png" x="216" y="1639" width="108" height="239"/>
+	<SubTexture name="rockIceDown.png" x="222" y="1250" width="108" height="239"/>
+	<SubTexture name="rockSnow.png" x="324" y="1728" width="108" height="239"/>
+	<SubTexture name="rockSnowDown.png" x="108" y="1757" width="108" height="239"/>
+	<SubTexture name="starBronze.png" x="170" y="1996" width="39" height="37"/>
+	<SubTexture name="starGold.png" x="369" y="1444" width="39" height="37"/>
+	<SubTexture name="starSilver.png" x="330" y="1444" width="39" height="37"/>
+	<SubTexture name="tap.png" x="156" y="1712" width="40" height="40"/>
+	<SubTexture name="tapLeft.png" x="0" y="1996" width="85" height="42"/>
+	<SubTexture name="tapRight.png" x="85" y="1996" width="85" height="42"/>
+	<SubTexture name="tapTick.png" x="418" y="1350" width="59" height="59"/>
+	<SubTexture name="textGameOver.png" x="0" y="835" width="412" height="78"/>
+	<SubTexture name="textGetReady.png" x="0" y="913" width="400" height="73"/>
+</TextureAtlas>

examples/quickwings/assets/tappybird/license.txt

@@ -0,0 +1,14 @@
+
+###############################################################################
+
+	Tappy Plane by Kenney Vleugels (www.kenney.nl)
+
+			------------------------------
+
+			        License (CC0)
+	       http://creativecommons.org/publicdomain/zero/1.0/
+
+	You may use these graphics in personal and commercial projects.
+	Credit (Kenney or www.kenney.nl) would be nice but is not mandatory.
+
+###############################################################################