Unstable (A Tricky Platformer)

Instructions: You take for granted that the ground is stable and solid, but it will not be for long. Take care...\nUnstable: A Tricky Platformer\n\nInstructions:\n--Use your arrow keys to move--\n--Press the R key to restart any level--\n--Move from dot to dot and don't fall or hit into the strange substance taking over the land...--

@Stage\n\nwhen flag clicked\nforever\n    play sound [soundscrate-solemn-state-sc1 v] until done\nend\n\nwhen flag clicked\nswitch backdrop to (backdrop1 v)\n\n@Player\n\nwhen flag clicked\nset rotation style [left-right v]\nset [y spawn v] to [1]\nset [x spawn v] to [-218]\ngo to x: (X Spawn) y: (Y Spawn)\nshow\nset size to (50) %\nset [x v] to [0]\nset [y v] to [0]\nforever\n    Platformer engine\nend\n\ndefine Platformer engine\nchange [y v] by (-0.5)\nif <key (left arrow v) pressed?> then\n    change [x v] by (-1)\n    point in direction (-90)\nend\nif <key (right arrow v) pressed?> then\n    point in direction (90)\n    change [x v] by (1)\nend\nset [x v] to ((x) * (0.9))\nchange x by (x)\nif <touching color (#000000)?> then\n    change y by (1)\n    if <touching color (#000000)?> then\n        change y by (1)\n        if <touching color (#000000)?> then\n            change y by (1)\n            if <touching color (#000000)?> then\n                change y by (1)\n                if <touching color (#000000)?> then\n                    change y by (1)\n                    if <touching color (#000000)?> then\n                        change y by (1)\n                        if <touching color (#000000)?> then\n                            change y by (-6)\n                            change x by ((x) * (-1))\n                        end\n                    end\n                end\n            end\n        end\n    end\nend\nchange y by (y)\nif <touching color (#000000)?> then\n    change y by ((y) * (-1))\n    set [y v] to [0]\nend\nchange y by (-0.5)\nif <<touching color (#000000)?> and <key (up arrow v) pressed?>> then\n    set [y v] to [10]\nend\nchange y by (0.5)\nif <touching color (#87bc7d)?> then\n    go to x: (X Spawn) y: (Y Spawn)\nend\nif <touching color (#ff00eb)?> then\n    set [y v] to [16]\nend\n\nif <key (up arrow v) pressed?> then\n    set [y v] to [10]\n    if <(x) > [0]> then\n        set [x v] to [-10]\n    else\n        set [x v] to [10]\n    end\nelse\n    set [x v] to [0]\nend\n\nwhen backdrop switches to [backdrop1 v]\nhide\n\nwhen backdrop switches to [backdrop2 v]\nshow\n\nwhen [r v] key pressed\nset [y spawn v] to [1]\nset [x spawn v] to [-218]\ngo to x: (X Spawn) y: (Y Spawn)\nshow\nset size to (50) %\nset [x v] to [0]\nset [y v] to [0]\nforever\n    Platformer engine\nend\n\nwhen flag clicked\nforever\n    if <(x position) > [234]> then\n        switch backdrop to (next backdrop v)\n        go to x: (-218) y: (1)\n    end\nend\n\nwhen flag clicked\nforever\n    if <(y position) < [-171]> then\n        go to x: (-218) y: (1)\n    end\nend\n\nwhen backdrop switches to [backdrop21 v]\nhide\n\nwhen backdrop switches to [backdrop2 v]\ngo to x: (-218) y: (1)\n\n@Play Button\n\nwhen flag clicked\nshow\nforever\n    if <touching (mouse-pointer v)?> then\n        switch costume to (costume2 v)\n        wait until <not <touching (mouse-pointer v)?>>\n        switch costume to (costume1 v)\n    end\nend\n\nwhen backdrop switches to [backdrop2 v]\nhide\n\nwhen this sprite clicked\nswitch backdrop to (backdrop2 v)\n\n