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

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.math.Intersector;
   4 import com.badlogic.gdx.math.MathUtils;
   5 import com.badlogic.gdx.math.Rectangle;
   6 import com.badlogic.gdx.math.Vector2;
   7 import ru.deadsoftware.cavecraft.CaveGame;
   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,.9f);
  22     }
  23
  24     private boolean checkJump(Rectangle rect, int dir) {
  25         int bl = 0;
  26         switch (dir) {
  27             case 0:
  28                 bl = gameProc.world.getForeMap(
  29                     (int)((rect.x+(rect.width/2))/16) - 1,
  30                     (int)(rect.y/16)+1);
  31                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)-1,(int)(rect.y/16))>0) bl=0;
  32                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)-1,(int)(rect.y/16)-1)>0) bl=0;
  33                 break;
  34             case 1:
  35                 bl = gameProc.world.getForeMap(
  36                     (int)((rect.x+(rect.width/2))/16) + 1,
  37                     (int)(rect.y/16)+1);
  38                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)+1,(int)(rect.y/16))>0) bl=0;
  39                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)+1,(int)(rect.y/16)-1)>0) bl=0;
  40                 break;
  41             default:
  42                 bl=0;
  43         }
  44         return (bl>0 && Items.BLOCKS.getValueAt(bl).collision);
  45     }
  46
  47     private boolean checkColl(Rectangle rect) {
  48         int bl;
  49         int minX = (int) ((rect.x+rect.width/2)/16)-4;
  50         int minY = (int) ((rect.y+rect.height/2)/16)-4;
  51         int maxX = (int) ((rect.x+rect.width/2)/16)+4;
  52         int maxY = (int) ((rect.y+rect.height/2)/16)+4;
  53         if (minY<0) minY=0;
  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 (checkColl(pl.getRect())) {
  86             if (pl.canJump && !pl.flyMode) pl.position.y-=8;
  87             if (checkColl(pl.getRect())) {
  88                 if (pl.canJump && !pl.flyMode) pl.position.y+=8;
  89                 int d = 0;
  90                 if (pl.moveX.x < 0) d = 1;
  91                 else if (pl.moveX.x > 0) d = -1;
  92                 pl.position.x = MathUtils.round(pl.position.x);
  93                 while (checkColl(pl.getRect())) pl.position.x += d;
  94             }
  95         }
  96         if (pl.position.x+pl.texWidth/2<0) pl.position.x+=gameProc.world.getWidth()*16;
  97         if (pl.position.x+pl.texWidth/2>gameProc.world.getWidth()*16) pl.position.x-=gameProc.world.getWidth()*16;
  98         if (pl.position.y > gameProc.world.getHeight()*16) {
  99             pl.position = gameProc.world.getSpawnPoint().cpy();
 100         }
 101         if (CaveGame.TOUCH && checkJump(pl.getRect(), pl.dir) && !pl.flyMode && pl.canJump && !pl.moveX.equals(Vector2.Zero)) {
 102             pl.moveY.add(0, -8);
 103             pl.canJump = false;
 104         }
 105     }
 106
 107     private void mobPhy(Mob mob) {
 108         mob.position.add(mob.moveY);
 109         if (checkColl(mob.getRect())) {
 110             mob.canJump = true;
 111             int d = -1;
 112             if (mob.moveY.y<0) d=1; else if (mob.moveY.y>0) d=-1;
 113             mob.position.y = MathUtils.round(mob.position.y);
 114             while (checkColl(mob.getRect())) mob.position.y+=d;
 115             mob.moveY.setZero();
 116         } else {
 117             mob.canJump = false;
 118         }
 119         mob.moveY.add(gravity);
 120         mob.position.add(mob.moveX);
 121         if (mob.position.x+mob.width/2<0) mob.position.x+=gameProc.world.getWidth()*16;
 122         if (mob.position.x+mob.width/2>gameProc.world.getWidth()*16) mob.position.x-=gameProc.world.getWidth()*16;
 123         if (checkColl(mob.getRect())) {
 124             int d = 0;
 125             if (mob.moveX.x<0) d=1; else if (mob.moveX.x>0) d=-1;
 126             mob.position.x = MathUtils.round(mob.position.x);
 127             while (checkColl(mob.getRect())) mob.position.x+=d;
 128         }
 129 }
 130
 131     public void update(float delta) {
 132         for (Mob mob : gameProc.mobs) {
 133             mob.ai();
 134             mobPhy(mob);
 135         }
 136         playerPhy(gameProc.player);
 137
 138         gameProc.renderer.camera.position.set(
 139                 gameProc.player.position.x+gameProc.player.texWidth/2 - gameProc.renderer.camera.viewportWidth/2,
 140                 gameProc.player.position.y+gameProc.player.height/2-gameProc.renderer.camera.viewportHeight/2,
 141                 0
 142         );
 143     }
 144
 145 }