core/src/ru/deadsoftware/cavecraft/game/GamePhysics.java

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.math.Intersector;
   4 import com.badlogic.gdx.math.MathUtils;
   5 import com.badlogic.gdx.math.Rectangle;
   6 import com.badlogic.gdx.math.Vector2;
   7 import ru.deadsoftware.cavecraft.CaveGame;
   8 import ru.deadsoftware.cavecraft.game.mobs.Mob;
   9 import ru.deadsoftware.cavecraft.game.objects.Player;
  10
  11 public class GamePhysics {
  12
  13     public static final int PL_SPEED = 2;
  14
  15     private GameProc gameProc;
  16
  17     private Vector2 gravity;
  18
  19     public GamePhysics(GameProc gameProc) {
  20         this.gameProc = gameProc;
  21         gravity = new Vector2(0,.9f);
  22     }
  23
  24     private boolean checkJump(Rectangle rect, int dir) {
  25         int bl;
  26         switch (dir) {
  27             case 0:
  28                 bl = gameProc.world.getForeMap((int)((rect.x-8)/16),(int)((rect.y+rect.height-8)/16));
  29                 break;
  30             case 1:
  31                 bl = gameProc.world.getForeMap((int)((rect.x+rect.width+8)/16),(int)((rect.y+rect.height-8)/16));
  32                 break;
  33             default:
  34                 bl=0;
  35         }
  36         return (bl>0 && Items.BLOCKS.getValueAt(bl).collision);
  37     }
  38
  39     private boolean checkColl(Rectangle rect) {
  40         int bl;
  41         int minX = (int) ((rect.x+rect.width/2)/16)-4;
  42         int minY = (int) ((rect.y+rect.height/2)/16)-4;
  43         int maxX = (int) ((rect.x+rect.width/2)/16)+4;
  44         int maxY = (int) ((rect.y+rect.height/2)/16)+4;
  45         if (minY<0) minY=0;
  46         if (maxY>gameProc.world.getHeight()) maxY = gameProc.world.getHeight();
  47         for (int y=minY; y<maxY; y++) {
  48             for (int x=minX; x<maxX; x++) {
  49                 bl = gameProc.world.getForeMap(x,y);
  50                 if (bl>0 && Items.BLOCKS.getValueAt(bl).collision){
  51                     if (Intersector.overlaps(rect, Items.BLOCKS.getValueAt(bl).getRect(x,y))){
  52                         return true;
  53                     }
  54                 }
  55             }
  56         }
  57         return false;
  58     }
  59
  60     private void playerPhy(Player pl) {
  61         pl.position.add(pl.moveY);
  62         if (checkColl(pl.getRect())) {
  63             int d = -1;
  64             if (pl.moveY.y<0) d=1;
  65             if (d==-1) {
  66                 pl.flyMode = false;
  67                 pl.canJump = true;
  68             }
  69             pl.position.y = MathUtils.round(pl.position.y);
  70             while (checkColl(pl.getRect())) pl.position.y+=d;
  71             pl.moveY.setZero();
  72         } else {
  73             pl.canJump = false;
  74         }
  75         if (!pl.flyMode && pl.moveY.y<18) pl.moveY.add(gravity);
  76         pl.position.add(pl.moveX);
  77         if (checkColl(pl.getRect())) {
  78             if (pl.canJump && !pl.flyMode) pl.position.y-=8;
  79             if (checkColl(pl.getRect())) {
  80                 if (pl.canJump && !pl.flyMode) pl.position.y+=8;
  81                 int d = 0;
  82                 if (pl.moveX.x < 0) d = 1;
  83                 else if (pl.moveX.x > 0) d = -1;
  84                 pl.position.x = MathUtils.round(pl.position.x);
  85                 while (checkColl(pl.getRect())) pl.position.x += d;
  86             }
  87         }
  88         if (pl.position.x+pl.texWidth/2<0) pl.position.x+=gameProc.world.getWidth()*16;
  89         if (pl.position.x+pl.texWidth/2>gameProc.world.getWidth()*16) pl.position.x-=gameProc.world.getWidth()*16;
  90         if (pl.position.y > gameProc.world.getHeight()*16) {
  91             pl.position = gameProc.world.getSpawnPoint().cpy();
  92         }
  93         if (CaveGame.TOUCH && checkJump(pl.getRect(), pl.dir) && !pl.flyMode && pl.canJump && !pl.moveX.equals(Vector2.Zero)) {
  94             pl.moveY.add(0, -8);
  95             pl.canJump = false;
  96         }
  97     }
  98
  99     private void mobPhy(Mob mob) {
 100         mob.position.add(mob.moveY);
 101         if (checkColl(mob.getRect())) {
 102             int d = -1;
 103             if (mob.moveY.y<0) d=1;
 104             if (d==-1) mob.canJump = true;
 105             mob.position.y = MathUtils.round(mob.position.y);
 106             while (checkColl(mob.getRect())) mob.position.y+=d;
 107             mob.moveY.setZero();
 108         } else {
 109             mob.canJump = false;
 110         }
 111         if (mob.moveY.y<18) mob.moveY.add(gravity);
 112         mob.position.add(mob.moveX);
 113         if (checkColl(mob.getRect())) {
 114             if (mob.canJump) {
 115                 mob.position.y-=8;
 116             }
 117             if (checkColl(mob.getRect())) {
 118                 if (mob.canJump) mob.position.y+=8;
 119                 int d = 0;
 120                 if (mob.moveX.x < 0) d = 1;
 121                 else if (mob.moveX.x > 0) d = -1;
 122                 mob.position.x = MathUtils.round(mob.position.x);
 123                 while (checkColl(mob.getRect())) mob.position.x += d;
 124             }
 125         }
 126         if (mob.position.x+mob.width/2<0) mob.position.x+=gameProc.world.getWidth()*16;
 127         if (mob.position.x+mob.width/2>gameProc.world.getWidth()*16) mob.position.x-=gameProc.world.getWidth()*16;
 128         if (mob.position.y > gameProc.world.getHeight()*16) {
 129             mob.position.y = 0;
 130         }
 131         if (checkJump(mob.getRect(), mob.dir) && mob.canJump && !mob.moveX.equals(Vector2.Zero)) {
 132             mob.moveY.add(0, -8);
 133             mob.canJump = false;
 134         }
 135 }
 136
 137     public void update(float delta) {
 138         for (Mob mob : gameProc.mobs) {
 139             mob.ai();
 140             mobPhy(mob);
 141         }
 142         playerPhy(gameProc.player);
 143
 144         gameProc.renderer.camera.position.set(
 145                 gameProc.player.position.x+gameProc.player.texWidth/2 - gameProc.renderer.camera.viewportWidth/2,
 146                 gameProc.player.position.y+gameProc.player.height/2-gameProc.renderer.camera.viewportHeight/2,
 147                 0
 148         );
 149     }
 150
 151 }