# Getting background to move when char jumps **URL:** \ **Category:** programming\ **Created:** [June 4, 2010, 8:51pm UTC](https://forum.kirupa.com/t/getting-background-to-move-when-char-jumps/310231 "2010-06-04T20:51:58Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Iokina](https://avatars.discourse-cdn.com/v4/letter/i/9f8e36/32.png) [@Iokina](https://forum.kirupa.com/u/Iokina)\ **Post date:** [June 4, 2010, 8:51pm UTC](https://forum.kirupa.com/t/getting-background-to-move-when-char-jumps/310231/1 "2010-06-04T20:51:58Z")
I am using Nathan Stockton’s game engine. It is working beautifully, but now I want the ground to move as my char jumps. I have some platforms that are too high for my game screen, and so I need them to move down as he jumps up. I was hoping it would be similar to how the ground moves left and right when he walks, but I must be doing something wrong. Here is the code for my character MC onClipEvent (load) { jumping = false; // jumping is true speed = 0; // speed is 0 ////////////////////// ////Ammendment 1// ////////////////// healthX = \_root.health.\_x; //sets healthX to the starting X postition of the “health” MC scoreX = \_root.score.\_x; //sets scoreX to the starting X postition of the “score” MC clarityX = \_root.clarity.\_x; //sets healthX to the starting X postition of the “health” MC appreciationX = \_root.appreciation.\_x; //sets scoreX to the starting X postition of the “score” MC Xpos = this.\_x; //sets Xpos to the starting X postition of this MC Ypos = this.\_y; //sets Ypos to the starting Y postition of this MC //////////////// /////// maxmove = 15; // maxmove is fifteen(max run seed) \_root.maxshoottime = 50; // \_root.maxshoottime is set to 100 // this is how far you want the bullets to travel before deleting } onClipEvent (enterFrame) { ////////////////////// ////Ammendment 2// ////////////////// \_x = Xpos-\_root.\_x; //sets the X pos to the starting X postition of this MC \_root.score.\_x = scoreX-\_root.\_x; //sets the scire MCs X pos to its starting point on the screen \_root.health.\_x = healthX-\_root.\_x; //sets the health MCs X pos to its starting point on the screen \_root.clarity.\_x = scoreX-\_root.\_x; //sets the scire MCs X pos to its starting point on the screen \_root.appreciation.\_x = healthX-\_root.\_x; //sets the health MCs X pos to its starting point on the screen if (!\_root.ground.hitTest(this.\_x, this.\_y, true) && !jumping) { // if NOT hitting X and Y postion with the ground and NOT jumping this.\_y += 6; // Y positon moves up 6 } //////////////// /////// if (!\_root.shooting) { // if \_root.shooting is false \_root.timer = 0; // \_root.timer is set to 0 \_root.mvsp = \_xscale/20; // \_root.mvsp is set to the chars xscale divided by 20 // the answer to this is the speed of the bullets } if (\_root.dead) { // if dead is true this.gotoAndStop(“dead”); // goto and stop on the “dead” frame } else { // otherwise (if they are not dead) speed \*= .85; // speed is multiplied by .85 // the lower the faster is slows if (dir == “right” && !\_root.leftblock.hitTest(this.\_x+20, this.\_y, true)) { \_root.health.\_x += speed; // moves the health, the opposite way to the \_root \_root.score.\_x += speed; // moves the score, the opposite way to the \_root \_root.clarity.\_x += speed; // moves the health, the opposite way to the \_root \_root.appreciation.\_x += speed; // moves the score, the opposite way to the \_root this.\_x += speed; // moves the char, the opposite way to the \_root \_root.\_x -= speed; } // moves the \_root ``` ////////////////////// ////Ammendment 3// ////////////////// if (speed>0) { //if speed is smaller than 0 dir = "right"; // the variable dir is set to right } else if (speed<0) { //if speed is greater than 0 dir = "left"; // the var dir is set to left } if (dir == "left" && !_root.rightblock.hitTest(this._x-20, this._y, true)) { _root.health._x += speed; // moves the health, the opposite way to the _root _root.score._x += speed; // moves the score, the opposite way to the _root _root.clarity._x += speed; // moves the health, the opposite way to the _root _root.appreciation._x += speed; // moves the score, the opposite way to the _root this._x += speed; // moves the char, the opposite way to the _root _root._x -= speed; // moves the _root } if (Key.isDown(Key.LEFT)) { // if left is pressed if (speed>-maxmove) { // if the speed is greater than neg. maxmove speed--; // speed goes lower } this.gotoAndStop("run"); // goto and stop the run frame this._xscale = -100; // scale is set to neg. 100 // this is what rotates ur char /////////////////// /////////////// } else if (Key.isDown(Key.RIGHT)) { // otherwise if right is pressed if (speed<maxmove) { // if the speed is smaller than maxmove speed++; // speed goes up } this._xscale = 100; // scale is set to 100 // this is what rotates ur char this.gotoAndStop("run"); // goto and stop the run frame } else if (Key.isDown(Key.CONTROL)) { // otherwise if control is pressed this.gotoAndStop("attack"); // goto and stop the attack frame attacking = true; // attacking is true speed = 0; // speed is set to 0 } else if (Key.isDown(Key.SPACE)) { // otherwise if space is pressed if (_root.gotgun == true && !_root.shooting) { // if _root.gotgun is true(they have the gun) and _root.shooting is false _root.attachMovie("bullet", "bulleter", 1, {_x:_root.char._x, _y:_root.char._y+-95}); // attach the movie with the Linkage name "bullet" to the _root at the character X position and the Y position minus 25 _root.shooting = true; // _root.shooting is set true with (_root.bulleter) { // all code below this code and it's closer refer to _root.bulleter onEnterFrame = function () { // setting the onEnterFrame events (onClipEvent) if (_root.timer>_root.maxshoottime) { // if _root.timer is smaller than _root.maxshoottime _root.shooting = false; // shooting is false unloadMovie(this); // this movie clip is unloaded } _root.timer++; // _root.timer goes up 1 _x += _root.mvsp; // the X goes up _root.mvsp (which is set constantly and stays the same when shooting.) }; }; } attacking = true; // attacking is true speed = 0; // speed is set to 0 this.gotoAndStop("shoot"); // goto and stop on the shoot frame } } else if (speed<1 && speed>-1 && !attacking) { // if speed is smaller than one and greater than neg. 1 speed = 0; // speed is set to 0 this.gotoAndStop("idle"); // gotoAndStop the idle frame } if (Key.isDown(Key.UP) && !jumping) { // if up is pressed and NOT jumping jumping = true; // jumping is set true } ``` \*\* if (jumping) { // if jumping is true this.gotoAndStop(“jump”); this.\_y -= jump; // Y position is set down jump jump -= .5; // jump is set down .5 \_root.health.\_y += speed; // moves the health, the opposite way to the \_root \_root.score.\_y += speed; // moves the score, the opposite way to the \_root \_root.clarity.\_y += speed; // moves the health, the opposite way to the \_root \_root.appreciation.\_y += speed; // moves the score, the opposite way to the \_root this.\_y += speed; // moves the char, the opposite way to the \_root \_root.\_y += speed; // moves the \_root\*\* } if (jump\<0) { // if jump is smaller than 0 falling = true; // falling is true } if (jump\<-15) { // if jump is smaller than neg. 5 jump = -15; // jump is set to neg 5 // capping fall speeds prevents falling through grounds } } if (\_root.ground.hitTest(this.\_x, this.\_y, true) && falling) { // if hitting X an Y postions with the ground and falling jump = 12; // jump is set to 9 jumping = false; // jumping is false falling = false; // falling is false } } onClipEvent (keyUp) { // on Key Up if (Key.getCode() == Key.CONTROL) { // if the release is control attacking = false; // attacking is false } }