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