java - How to implement a linked list for a flappy bird program in my class. Now I'm getting errors that "cannot be resolved to a field" -


i have model, view, , tube class , don't know what's going on.

import java.util.random; import java.util.linkedlist; import java.util.listiterator;  class model {     bird bird;     random r = new random();     linkedlist<tube> tubes;       model() {          this.bird = new bird();         this.tubes = new linkedlist<tube>();         tubes.add(new tube(r));     }      public void update() {         this.bird.update();         //this.tube.setposition();         //this.tube.update();         listiterator<tube> titerator = tubes.listiterator();         while (titerator.hasnext()){             system.out.println("another tube");         }      }      public void onclick(int x, int y) {         this.bird.setdestination();         this.bird.flap();     } }

this class below error.

import javax.swing.jpanel; import java.awt.graphics; import java.awt.image; import javax.imageio.imageio; import java.io.ioexception; import java.awt.graphics; import java.io.file;  class view extends jpanel {     model model;     image bird_image;     image bird_image_flap;     image tube_image;     image tube_image_down;      view(model m) throws ioexception {         this.model = m;         this.bird_image = imageio.read(new file("bird1.png"));         this.bird_image_flap = imageio.read(new file("bird2.png"));         this.tube_image = imageio.read(new file("tube_up.png"));         this.tube_image_down = imageio.read(new file("tube_down.png"));      }      public void paintcomponent(graphics g) {          if(this.model.bird.flapped){             g.drawimage(this.bird_image_flap, this.model.bird.x, this.model.bird.y, null);         } else {             g.drawimage(this.bird_image, this.model.bird.x, this.model.bird.y, null);         }             if(this.model.tubes.isitup){             g.drawimage(this.tube_image, this.model.tubes.tube_x, this.model.tubes.tube_y, null);          } else {             g.drawimage(this.tube_image_down, this.model.tubes.tube_x, this.model.tubes.tube_y - 400, null);          }      } }

multiple markers @ line 32 down. 1 'tube cannot resolved or not field'. 'isitup cannot resolved or not field' doing wrong?

the problem line, right? if(this.model.tubes.isitup){ field "tubes" on "model" variable of type "linkedlist" doubt has field "isitup". "isitup" field trying use? on tube object? if so, need relevant instance list (e.g. this.model.tubes.elementat(0).isitup).


Comments

Post a Comment

Popular posts from this blog

routing - AngularJS State management ->load multiple states in one page -

Image
i developing site in angularjs ui-router. have situation on button click need change , load 3 state page , 3 looks image .please me how can load multiple pages. in 1 page you need configure router config this: $stateprovider .state("state1", { url: "/url1", controller: "firstcontroller", views: { view1: { templateurl: "templates/template1.html" }, view2: { templateurl: "templates/template2.html" }, view3: { templateurl: "templates/template3.html" } } }).state("state2", { url: "/url2", controller: "secondcontroller", views: { view1: { templateurl: "templates/template4.html" }, view2: { templateurl: "templates/template5.html" }, view3: { templateurl: "templates/template6.html" } }).state("state3", { ...
Read more

python - GRASS parser() error -

i'm trying use grass on python 2.7, i'm having problems @ setting script on idle, i'm getting error @ parser() function: here script: import os import sys gisbase = os.environ['gisbase'] = 'c:\program files (x86)\grass gis 7.0.1rc1' gisrc = 'c:\grassdata' gisdbase = 'c:\grassdata' location = 'newlocation' mapset = 'tc' ld_library_path = 'c:\program files (x86)\grass gis 7.0.1rc1\lib' path = 'c:\program files (x86)\grass gis 7.0.1rc1\etc';'c:\program files (x86)\grass gis 7.0.1rc1\etc\python';'c:\program files (x86)\grass gis 7.0.1rc1\lib';'c:\program files (x86)\grass gis 7.0.1rc1\bin';'c:\python27';'c:\program files (x86)\grass gis 7.0.1rc1\python27';'c:\program files (x86)\grass gis 7.0.1rc1\msys' pythonlib = 'c:\python27' pythonpath = 'c:\program files (x86)\grass gis 7.0.1rc1\etc\python' sys.path.append(os.path.join(os.environ['...
Read more

Swift game error message -

i following ios game tutorial. cannot figure out wrong here. error on these 2 lines. let newangle = percent * 180 - 180 cannon.zrotation = cgfloat(newangle) * cgfloat(m_pi); 180.0 //error "use of unresolved identifier 'percent'" the tutorial uses: cannon.zrotation = cgfloat(newangle) * cgfloat(m_pi)/ 180.0 but changed error suggested import spritekit class gamescene: skscene { var cannon: skspritenode! var touchlocation:cgpoint = cgpointzero override func didmovetoview(view: skview) { /* setup scene here */ cannon = self.childnodewithname("cannon") as! skspritenode } override func touchesbegan(touches: set<uitouch>, withevent event: uievent?) { /* called when touch begins */ touchlocation = touches.first!.locationinnode(self) } override func touchesmoved(touches: set<uitouch>, withevent event: uievent?) { touchlocation = touches.first!.locationinn...
Read more