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 bl;
  44         int minX = (int) ((rect.x+rect.width/2)/16)-4;
  45         int minY = (int) ((rect.y+rect.height/2)/16)-4;
  46         int maxX = (int) ((rect.x+rect.width/2)/16)+4;
  47         int maxY = (int) ((rect.y+rect.height/2)/16)+4;
  48         if (minX<0) minX=0;
  49         if (minY<0) minY=0;
  50         if (maxX>gameProc.world.getWidth()) maxX = gameProc.world.getWidth();
  51         if (maxY>gameProc.world.getHeight()) maxY = gameProc.world.getHeight();
  52         for (int y=minY; y<maxY; y++) {
  53             for (int x=minX; x<maxX; x++) {
  54                 bl = gameProc.world.getForeMap(x,y);
  55                 if (bl>0 && Items.BLOCKS.getValueAt(bl).collision){
  56                     if (Intersector.overlaps(rect, Items.BLOCKS.getValueAt(bl).getRect(x,y))){
  57                         return true;
  58                     }
  59                 }
  60             }
  61         }
  62         return false;
  63     }
  64
  65     private void playerPhy(Player pl) {
  66         pl.position.add(pl.moveY);
  67         if (checkColl(pl.getRect())) {
  68             pl.flyMode = false;
  69             pl.canJump = true;
  70             int d = -1;
  71             if (pl.moveY.y<0) d=1; else if (pl.moveY.y>0) d=-1;
  72             pl.position.y = MathUtils.round(pl.position.y);
  73             while (checkColl(pl.getRect())) pl.position.y+=d;
  74             pl.moveY.setZero();
  75         } else {
  76             pl.canJump = false;
  77         }
  78         if (!pl.flyMode) pl.moveY.add(gravity);
  79         pl.position.add(pl.moveX);
  80         if (pl.position.x<0 ||
  81                 pl.position.x+pl.texWidth>=gameProc.world.getWidth()*16)
  82             pl.position.sub(pl.moveX);
  83         if (checkColl(pl.getRect())) {
  84             if (pl.canJump && !pl.flyMode) pl.position.y-=8;
  85             if (checkColl(pl.getRect())) {
  86                 if (pl.canJump && !pl.flyMode) pl.position.y+=8;
  87                 int d = 0;
  88                 if (pl.moveX.x < 0) d = 1;
  89                 else if (pl.moveX.x > 0) d = -1;
  90                 pl.position.x = MathUtils.round(pl.position.x);
  91                 while (checkColl(pl.getRect())) pl.position.x += d;
  92             }
  93         }
  94
  95         /*if (checkJump(pl.getRect(), pl.dir) && !pl.flyMode && pl.canJump && !pl.moveX.equals(Vector2.Zero)) {
  96             pl.moveY.add(0, -8);
  97             pl.canJump = false;
  98         }*/
  99     }
 100
 101     private void mobPhy(Mob mob) {
 102         mob.position.add(mob.moveY);
 103         if (checkColl(mob.getRect())) {
 104             mob.canJump = true;
 105             int d = -1;
 106             if (mob.moveY.y<0) d=1; else if (mob.moveY.y>0) d=-1;
 107             mob.position.y = MathUtils.round(mob.position.y);
 108             while (checkColl(mob.getRect())) mob.position.y+=d;
 109             mob.moveY.setZero();
 110         } else {
 111             mob.canJump = false;
 112         }
 113         mob.moveY.add(gravity);
 114         mob.position.add(mob.moveX);
 115         if (mob.position.x<32 ||
 116                 mob.position.x+mob.width>gameProc.world.getWidth()*16-32)
 117             mob.position.sub(mob.moveX);
 118         if (checkColl(mob.getRect())) {
 119             int d = 0;
 120             if (mob.moveX.x<0) d=1; else if (mob.moveX.x>0) d=-1;
 121             mob.position.x = MathUtils.round(mob.position.x);
 122             while (checkColl(mob.getRect())) mob.position.x+=d;
 123         }
 124 }
 125
 126     public void update(float delta) {
 127
 128         for (Mob mob : gameProc.mobs) {
 129             mob.ai();
 130             mobPhy(mob);
 131         }
 132         playerPhy(gameProc.player);
 133
 134         gameProc.renderer.camera.position.set(
 135                 gameProc.player.position.x+gameProc.player.texWidth/2 - gameProc.renderer.camera.viewportWidth/2,
 136                 gameProc.player.position.y+gameProc.player.height/2-gameProc.renderer.camera.viewportHeight/2,
 137                 0
 138         );
 139     }
 140
 141 }