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

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