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.Items;
   9 import ru.deadsoftware.cavecraft.game.mobs.Mob;
  10 import ru.deadsoftware.cavecraft.game.objects.Player;
  11
  12 public class GamePhysics {
  13
  14     public static final int PL_SPEED = 2;
  15
  16     private GameProc gameProc;
  17
  18     private Vector2 gravity;
  19
  20     public GamePhysics(GameProc gameProc) {
  21         this.gameProc = gameProc;
  22         gravity = new Vector2(0,.9f);
  23     }
  24
  25     private boolean checkJump(Rectangle rect, int dir) {
  26         int bl = 0;
  27         switch (dir) {
  28             case 0:
  29                 bl = gameProc.world.getForeMap(
  30                     (int)((rect.x+(rect.width/2))/16) - 1,
  31                     (int)(rect.y/16)+1);
  32                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)-1,(int)(rect.y/16))>0) bl=0;
  33                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)-1,(int)(rect.y/16)-1)>0) bl=0;
  34                 break;
  35             case 1:
  36                 bl = gameProc.world.getForeMap(
  37                     (int)((rect.x+(rect.width/2))/16) + 1,
  38                     (int)(rect.y/16)+1);
  39                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)+1,(int)(rect.y/16))>0) bl=0;
  40                 if (gameProc.world.getForeMap((int)((rect.x+(rect.width/2))/16)+1,(int)(rect.y/16)-1)>0) bl=0;
  41                 break;
  42             default:
  43                 bl=0;
  44         }
  45         return (bl>0 && Items.BLOCKS.getValueAt(bl).collision);
  46     }
  47
  48     private boolean checkColl(Rectangle rect) {
  49         int bl;
  50         int minX = (int) ((rect.x+rect.width/2)/16)-4;
  51         int minY = (int) ((rect.y+rect.height/2)/16)-4;
  52         int maxX = (int) ((rect.x+rect.width/2)/16)+4;
  53         int maxY = (int) ((rect.y+rect.height/2)/16)+4;
  54         if (minY<0) minY=0;
  55         if (maxY>gameProc.world.getHeight()) maxY = gameProc.world.getHeight();
  56         for (int y=minY; y<maxY; y++) {
  57             for (int x=minX; x<maxX; x++) {
  58                 bl = gameProc.world.getForeMap(x,y);
  59                 if (bl>0 && Items.BLOCKS.getValueAt(bl).collision){
  60                     if (Intersector.overlaps(rect, Items.BLOCKS.getValueAt(bl).getRect(x,y))){
  61                         return true;
  62                     }
  63                 }
  64             }
  65         }
  66         return false;
  67     }
  68
  69     private void playerPhy(Player pl) {
  70         pl.position.add(pl.moveY);
  71         if (checkColl(pl.getRect())) {
  72             int d = -1;
  73             if (pl.moveY.y<0) d=1; else if (pl.moveY.y>0) d=-1;
  74             if (d==-1) {
  75                 pl.flyMode = false;
  76                 pl.canJump = true;
  77             }
  78             pl.position.y = MathUtils.round(pl.position.y);
  79             while (checkColl(pl.getRect())) pl.position.y+=d;
  80             pl.moveY.setZero();
  81         } else {
  82             pl.canJump = false;
  83         }
  84         if (!pl.flyMode && pl.moveY.y<18) pl.moveY.add(gravity);
  85         pl.position.add(pl.moveX);
  86         if (checkColl(pl.getRect())) {
  87             if (pl.canJump && !pl.flyMode) pl.position.y-=8;
  88             if (checkColl(pl.getRect())) {
  89                 if (pl.canJump && !pl.flyMode) pl.position.y+=8;
  90                 int d = 0;
  91                 if (pl.moveX.x < 0) d = 1;
  92                 else if (pl.moveX.x > 0) d = -1;
  93                 pl.position.x = MathUtils.round(pl.position.x);
  94                 while (checkColl(pl.getRect())) pl.position.x += d;
  95             }
  96         }
  97         if (pl.position.y > gameProc.world.getHeight()*16) {
  98             pl.position = gameProc.world.getSpawnPoint().cpy();
  99         }
 100         if (CaveGame.TOUCH && checkJump(pl.getRect(), pl.dir) && !pl.flyMode && pl.canJump && !pl.moveX.equals(Vector2.Zero)) {
 101             pl.moveY.add(0, -8);
 102             pl.canJump = false;
 103         }
 104     }
 105
 106     private void mobPhy(Mob mob) {
 107         mob.position.add(mob.moveY);
 108         if (checkColl(mob.getRect())) {
 109             mob.canJump = true;
 110             int d = -1;
 111             if (mob.moveY.y<0) d=1; else if (mob.moveY.y>0) d=-1;
 112             mob.position.y = MathUtils.round(mob.position.y);
 113             while (checkColl(mob.getRect())) mob.position.y+=d;
 114             mob.moveY.setZero();
 115         } else {
 116             mob.canJump = false;
 117         }
 118         mob.moveY.add(gravity);
 119         mob.position.add(mob.moveX);
 120         if (checkColl(mob.getRect())) {
 121             int d = 0;
 122             if (mob.moveX.x<0) d=1; else if (mob.moveX.x>0) d=-1;
 123             mob.position.x = MathUtils.round(mob.position.x);
 124             while (checkColl(mob.getRect())) mob.position.x+=d;
 125         }
 126 }
 127
 128     public void update(float delta) {
 129         for (Mob mob : gameProc.mobs) {
 130             mob.ai();
 131             mobPhy(mob);
 132         }
 133         playerPhy(gameProc.player);
 134
 135         gameProc.renderer.camera.position.set(
 136                 gameProc.player.position.x+gameProc.player.texWidth/2 - gameProc.renderer.camera.viewportWidth/2,
 137                 gameProc.player.position.y+gameProc.player.height/2-gameProc.renderer.camera.viewportHeight/2,
 138                 0
 139         );
 140     }
 141
 142 }