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

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.math.MathUtils;
   4 import com.badlogic.gdx.math.Rectangle;
   5 import com.badlogic.gdx.math.Vector2;
   6 import com.badlogic.gdx.math.Vector3;
   7 import ru.deadsoftware.cavecraft.Items;
   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(0,1);
  22     }
  23
  24     private boolean checkJump(Rectangle rect, int dir) {
  25         int bl = 0;
  26         switch (dir) {
  27             case 0:
  28                 if ((int)((rect.x+(rect.width/2))/16) - 1>=0)
  29                     bl = gameProc.world.getForeMap(
  30                         (int)((rect.x+(rect.width/2))/16) - 1,
  31                         (int)(rect.y/16)+1);
  32                 break;
  33             case 1:
  34                 if ((int)((rect.x+(rect.width/2))/16) + 1<gameProc.world.getWidth())
  35                     bl = gameProc.world.getForeMap(
  36                         (int)((rect.x+(rect.width/2))/16) + 1,
  37                         (int)(rect.y/16)+1);
  38                 break;
  39             default:
  40                 bl=0;
  41         }
  42         return (bl>0 && Items.BLOCKS.getValueAt(bl).collision);
  43     }
  44
  45     private boolean checkColl(Rectangle rect) {
  46         int[] bl = new int [6];
  47         bl[0] = gameProc.world.getForeMap(((int)(rect.x)/16), ((int)rect.y/16));
  48         bl[1] = gameProc.world.getForeMap(((int)(rect.x+rect.width-1)/16), ((int)rect.y/16));
  49         bl[2] = gameProc.world.getForeMap(((int)(rect.x)/16), ((int)(rect.y+rect.height/2)/16));
  50         bl[3] = gameProc.world.getForeMap(((int)(rect.x+rect.width-1)/16), ((int)(rect.y+rect.height/2)/16));
  51         bl[4] = gameProc.world.getForeMap(((int)(rect.x)/16), ((int)(rect.y+rect.height-1)/16));
  52         bl[5] = gameProc.world.getForeMap(((int)(rect.x+rect.width-1)/16), ((int)(rect.y+(rect.height-1))/16));
  53         for (int b: bl) if (b>0 && Items.BLOCKS.getValueAt(b).collision) {
  54             return true;
  55         }
  56         return false;
  57     }
  58
  59     private void playerPhy(Player pl) {
  60         pl.position.add(pl.moveY);
  61         if (checkColl(pl.getRect())) {
  62             pl.flyMode = false;
  63             pl.canJump = true;
  64             int d = -1;
  65             if (pl.moveY.y<0) d=1; else if (pl.moveY.y>0) d=-1;
  66             pl.position.y = MathUtils.round(pl.position.y);
  67             while (checkColl(pl.getRect())) pl.position.y+=d;
  68             pl.moveY.setZero();
  69         } else {
  70             pl.canJump = false;
  71         }
  72         if (!pl.flyMode) pl.moveY.add(gravity);
  73         pl.position.add(pl.moveX);
  74         if (pl.position.x<0 ||
  75                 pl.position.x+pl.texWidth>=gameProc.world.getWidth()*16)
  76             pl.position.sub(pl.moveX);
  77         if (checkColl(pl.getRect())) {
  78             int d = 0;
  79             if (pl.moveX.x<0) d=1; else if (pl.moveX.x>0) d=-1;
  80             pl.position.x = MathUtils.round(pl.position.x);
  81             while (checkColl(pl.getRect())) pl.position.x+=d;
  82         }
  83
  84         if (checkJump(pl.getRect(), pl.dir) && !pl.flyMode && pl.canJump && !pl.moveX.equals(Vector2.Zero)) {
  85             pl.moveY.add(0, -8);
  86             pl.canJump = false;
  87         }
  88     }
  89
  90     private void mobPhy(Mob mob) {
  91         mob.position.add(mob.moveY);
  92         if (checkColl(mob.getRect())) {
  93             mob.canJump = true;
  94             int d = -1;
  95             if (mob.moveY.y<0) d=1; else if (mob.moveY.y>0) d=-1;
  96             mob.position.y = MathUtils.round(mob.position.y);
  97             while (checkColl(mob.getRect())) mob.position.y+=d;
  98             mob.moveY.setZero();
  99         } else {
 100             mob.canJump = false;
 101         }
 102         mob.moveY.add(gravity);
 103         mob.position.add(mob.moveX);
 104         if (mob.position.x<32 ||
 105                 mob.position.x+mob.width>gameProc.world.getWidth()*16-32)
 106             mob.position.sub(mob.moveX);
 107         if (checkColl(mob.getRect())) {
 108             int d = 0;
 109             if (mob.moveX.x<0) d=1; else if (mob.moveX.x>0) d=-1;
 110             mob.position.x = MathUtils.round(mob.position.x);
 111             while (checkColl(mob.getRect())) mob.position.x+=d;
 112         }
 113 }
 114
 115     public void update(float delta) {
 116
 117         for (Mob mob : gameProc.mobs) {
 118             mob.ai();
 119             mobPhy(mob);
 120         }
 121         playerPhy(gameProc.player);
 122
 123         gameProc.renderer.camera.position.set(
 124                 gameProc.player.position.x+gameProc.player.texWidth/2 - gameProc.renderer.camera.viewportWidth/2,
 125                 gameProc.player.position.y+gameProc.player.height/2-gameProc.renderer.camera.viewportHeight/2,
 126                 0
 127         );
 128     }
 129
 130 }