a normal platformer tutorial

Instructions: -Blue- A Platformer: The platform is completely blue!\nThere are about 20 levels and each level has it's own taste! 2nd Platformer in 7 months of Scratch!\nBlue: Easy and Fun Platformer! \nArrow Keys or WASD keys to move! See below:\nhttps://scratch.mit.edu/projects/386430812/\nTest Your IQ 2.0! Click on the LINK!

@Stage\n\nwhen flag clicked\nset [level : v] to [Intro]\nswitch backdrop to (intro page v)\n\nwhen I receive [message1 v]\nrepeat (10)\n    wait (0.1) seconds\n    change [brightness v] effect by (10)\nend\nswitch backdrop to (next backdrop v)\nchange [level : v] by (1)\nset [ink left : v] to [100]\nrepeat (10)\n    wait (0.1) seconds\n    change [brightness v] effect by (-10)\nend\n\nwhen I receive [intro finished v]\nset [level : v] to [0]\nswitch backdrop to (rainbow band v)\n\nwhen I receive [intro finished v]\nforever\n    play sound [Music  v] until done\nend\n\n@Main Page Title\n\nwhen flag clicked\nbroadcast (intro finished v)\nhide\n\nwhen flag clicked\nforever\n    if <(Score) > (☁ High Score)> then\n        set [☁ high score v] to (Score)\n    end\nend\n\nwhen I receive [intro finished v]\nhide variable [☁ high score v]\nshow\nset size to (0) %\nrepeat (12)\n    change size by (8)\nend\n\nwhen I receive [instructions v]\nhide\n\nwhen I receive [message1 v]\nhide\n\n@Controls B\n\nwhen flag clicked\nhide\n\nwhen I receive [message1 v]\nhide\n\nwhen this sprite clicked\nbroadcast (Instructions v)\nwait (0.4) seconds\nshow variable [☁ high score v]\n\nwhen flag clicked\nforever\n    if <touching (mouse-pointer v)?> then\n        set [brightness v] effect to (50)\n    else\n        set [brightness v] effect to (0)\n    end\nend\n\nwhen I receive [intro finished v]\nshow\nset size to (0) %\nrepeat (12)\n    change size by (8)\nend\ngo to x: (0) y: (-10)\n\nwhen I receive [instructions v]\nhide\n\n@Ball\n\nwhen flag clicked\nset [score v] to [0]\nhide\ngo to x: (-231) y: (-150)\n\nwhen I receive [message1 v]\nerase all\nforever\n    point in direction (90)\n    if on edge, bounce\n    if <key (right arrow v) pressed?> then\n        change x by (5)\n    end\n    if <key (left arrow v) pressed?> then\n        change x by (-5)\n    end\n    if <key (s v) pressed?> then\n        wait (0.1) seconds\n        go to x: (-231) y: (-150)\n        set [ink left : v] to [100]\n        change [score v] by (-50)\n        erase all\n        broadcast (Died v)\n    end\nend\n\nwhen [space v] key pressed\nerase all\n\nwhen I receive [message1 v]\nwait (2.5) seconds\nshow\ngo to x: (-231) y: (-150)\nforever\n    if <key (right arrow v) pressed?> then\n        change [xv v] by (1)\n    end\n    if <key (left arrow v) pressed?> then\n        change [xv v] by (-1)\n    end\n    set [xv v] to ((Xv) * (0.9))\n    change x by (Xv)\n    if <touching color (#ff9400)?> then\n        change y by (1)\n        if <touching color (#ff9400)?> then\n            change y by (1)\n            if <touching color (#ff9400)?> then\n                change y by (1)\n                if <touching color (#ff9400)?> then\n                    change y by (1)\n                    if <touching color (#ff9400)?> then\n                        change y by (1)\n                        if <touching color (#ff9400)?> then\n                            change x by ((Xv) * (-1))\n                            change y by (-5)\n                            if <key (up arrow v) pressed?> then\n                                if <(Xv) > [0]> then\n                                    set [xv v] to [-5]\n                                else\n                                    set [xv v] to [5]\n                                end\n                                set [yv v] to [10]\n                            else\n                                set [xv v] to [0]\n                            end\n                        end\n                    end\n                end\n            end\n        end\n    end\n    change [yv v] by (-1)\n    change y by (Yv)\n    if <touching color (#ff9400)?> then\n        change y by ((Yv) * (-1))\n        set [yv v] to [0]\n    end\n    change y by (-1)\n    if <touching color (#ff9400)?> then\n        if <key (up arrow v) pressed?> then\n            set [yv v] to [15]\n        end\n    end\n    change y by (1)\n    if <touching color (#000000)?> then\n        change [score v] by (200)\n        broadcast (message1 v)\n        hide\n    end\n    if <touching color (#ff0000)?> then\n        wait (0.1) seconds\n        go to x: (-231) y: (-150)\n        set [ink left : v] to [100]\n        change [died times : v] by (1)\n        change [score v] by (-100)\n        erase all\n        broadcast (Died v)\n    end\nend\n\n@Pen\n\nwhen flag clicked\nset [ink left : v] to [100]\nset [died times : v] to [0]\nerase all\nhide\nhide variable [ink left : v]\nhide variable [died times : v]\nhide variable [level : v]\n\nwhen I receive [died v]\nwait (1.5) seconds\nset [ink left : v] to [100]\nshow\nshow variable [ink left : v]\nshow variable [died times : v]\nerase all\npen up\nset pen color to (#ff9400)\nset pen size to (10)\nforever\n    go to (mouse-pointer v)\n    if <mouse down?> then\n        pen down\n        change [ink left : v] by (-1)\n    else\n        pen up\n    end\nend\n\nwhen flag clicked\nforever\n    go to (mouse-pointer v)\n    if <[0] > (Ink Left :)> then\n        pen up\n        stop [other scripts in sprite v]\n    end\nend\n\nwhen I receive [message1 v]\nwait (1.5) seconds\nset [ink left : v] to [100]\nshow\nshow variable [ink left : v]\nshow variable [died times : v]\nshow variable [level : v]\nshow variable [score v]\nerase all\npen up\nset pen color to (#ff9400)\nset pen size to (10)\nforever\n    go to (mouse-pointer v)\n    if <mouse down?> then\n        pen down\n        change [ink left : v] by (-1)\n    else\n        pen up\n    end\nend\n\n@Instructions Page\n\nwhen flag clicked\nhide variable [score v]\nhide\n\nwhen this sprite clicked\nhide variable [☁ high score v]\nrepeat (15)\n    change y by (-20)\nend\nbroadcast (intro finished v)\n\nwhen I receive [instructions v]\nrepeat (15)\n    change y by (20)\nend\n\nwhen I receive [intro finished v]\nhide variable [score v]\nset [score v] to [0]\nwait (0.25) seconds\nshow\ngo to x: (0) y: (-300)\n\nwhen I receive [message1 v]\nhide\n\n@Thumbnail\n\nwhen flag clicked\ngo to x: (0) y: (0)\nhide\n\n@Sprite1\n\nwhen flag clicked\nhide\ngo to x: (7) y: (59)\n\nwhen this sprite clicked\nhide\nbroadcast (message1 v)\n\nwhen I receive [intro finished v]\nshow\nset size to (0) %\nrepeat (10)\n    change size by (6)\nend\nset size to (60) %\n\nwhen flag clicked\nhide\nforever\n    if <touching (mouse-pointer v)?> then\n        set [brightness v] effect to (50)\n    else\n        set [brightness v] effect to (0)\n    end\nend\n\nwhen I receive [instructions v]\nhide\n\n