High school programming project, (COMPLETE BEGINNER)

Processing Coding Questions
2

incase my code isnt visable:

// Geo-Dash mit Dreiecken, AABB-Kollisionen, Bestenliste mit Namenseingabe

import java.util.Collections;

enum GameState { MENU, GAME, PAUSE, LOSE, WIN, LEADERBOARD, ENTER_NAME }
GameState state = GameState.MENU;

float playerX = 100, playerY = 300;
float playerW = 40, playerH = 40;
float ySpeed = 0, gravity = 0.8;
boolean isJumping = false;

ArrayList<TriangleObstacle> obstacles = new ArrayList<TriangleObstacle>();
ArrayList<ScoreEntry> highScores = new ArrayList<ScoreEntry>();

int score = 0;
String currentName = "";

void setup() {
  size(800, 400);
  frameRate(60);
  textAlign(CENTER, CENTER);
}

void draw() {
  background(30);
  switch(state) {
    case MENU:
      drawMenu();
      break;
    case GAME:
      runGame();
      break;
    case LOSE:
      drawLose();
      break;
    case WIN:
      drawWin();
      break;
    case PAUSE:
      drawPause();
      break;
    case LEADERBOARD:
      drawLeaderboard();
      break;
    case ENTER_NAME:
      drawNameEntry();
      break;
  }
}

void drawMenu() {
  fill(255);
  textSize(40);
  text("GEO-DASH", width/2, height/3);
  textSize(20);
  text("[S] Start  |  [M] Bestenliste", width/2, height/2);
}

void drawLose() {
  fill(255, 0, 0);
  textSize(32);
  text("YOU LOSE!", width/2, height/2 - 20);
  textSize(16);
  text("Bitte gib deinen Namen ein:", width/2, height/2 + 20);
  state = GameState.ENTER_NAME;
}

void drawNameEntry() {
  fill(255);
  textSize(20);
  text("Name: " + currentName, width/2, height/2);
  text("Drücke [ENTER], um zu speichern", width/2, height/2 + 40);
}

void drawWin() {
  fill(0, 255, 0);
  textSize(32);
  text("CONGRATS, YOU WIN!", width/2, height/2);
}

void drawPause() {
  fill(255);
  textSize(32);
  text("PAUSE", width/2, height/2);
}

void drawLeaderboard() {
  background(0);
  fill(255);
  textSize(32);
  text("Bestenliste", width/2, 50);
  textSize(20);
  if (highScores.size() == 0) {
    text("Keine Einträge.", width/2, height/2);
  } else {
    for (int i = 0; i < min(5, highScores.size()); i++) {
      ScoreEntry entry = highScores.get(i);
      text((i+1) + ". " + entry.name + " – " + entry.score + " Punkte", width/2, 100 + i * 30);
    }
  }
  textSize(16);
  text("[M] zurück zum Menü", width/2, height - 30);
}

void runGame() {
  fill(0, 255, 255);
  rect(playerX, playerY, playerW, playerH);

  ySpeed += gravity;
  playerY += ySpeed;

  if (playerY + playerH > height - 20) {
    playerY = height - 20 - playerH;
    ySpeed = 0;
    isJumping = false;
  }

  if (frameCount % 180 == 0) {
    float s = random(30, 60);
    obstacles.add(new TriangleObstacle(width, height - 20, s));
  }

  if (frameCount % 30 == 0) {
    score++;
  }

  fill(255);
  textSize(16);
  text("Score: " + score, 70, 30);

  for (TriangleObstacle to : obstacles) {
    to.move();
    to.display();
    if (checkAABB(playerX, playerY, playerW, playerH, to.x, to.y - to.size, to.size, to.size)) {
      state = GameState.LOSE;
    }
  }
}

void keyPressed() {
  if (state == GameState.MENU) {
    if (key == 's' || key == 'S') {
      restartGame();
      state = GameState.GAME;
    } else if (key == 'm' || key == 'M') {
      state = GameState.LEADERBOARD;
    }
  }

  else if (state == GameState.GAME) {
    if ((key == ' ' || keyCode == UP) && !isJumping) {
      ySpeed = -12;
      isJumping = true;
    } else if (key == 'p' || key == 'P') {
      state = GameState.PAUSE;
    }
  }

  else if (state == GameState.ENTER_NAME) {
    if (key == ENTER || key == RETURN) {
      highScores.add(new ScoreEntry(currentName, score));
      highScores.sort((a, b) -> b.score - a.score);
      currentName = "";
      state = GameState.LEADERBOARD;
    } else if (key == BACKSPACE && currentName.length() > 0) {
      currentName = currentName.substring(0, currentName.length()-1);
    } else if (key != CODED && key != ENTER && key != RETURN) {
      currentName += key;
    }
  }

  else if (state == GameState.LEADERBOARD && (key == 'm' || key == 'M')) {
    state = GameState.MENU;
  }

  else if (state == GameState.PAUSE && (key == 'p' || key == 'P')) {
    state = GameState.GAME;
  }
}

void restartGame() {
  playerY = 300;
  ySpeed = 0;
  obstacles.clear();
  score = 0;
  isJumping = false;
  currentName = "";
}

class TriangleObstacle {
  float x, y, size;
  TriangleObstacle(float x_, float y_, float size_) {
    x = x_;
    y = y_;
    size = size_;
  }
  void move() {
    x -= 5;
  }
  void display() {
    fill(255, 0, 0);
    triangle(x, y, x + size/2, y - size, x + size, y);
  }
}

class ScoreEntry {
  String name;
  int score;
  ScoreEntry(String n, int s) {
    name = n;
    score = s;
  }
}

boolean checkAABB(float x1, float y1, float w1, float h1,
                  float x2, float y2, float w2, float h2) {
  return x1 < x2 + w2 && x1 + w1 > x2 &&
         y1 < y2 + h2 && y1 + h1 > y2;
}