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