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.Drop;
  10 import ru.deadsoftware.cavecraft.game.objects.Player;
  11
  12 import java.util.Iterator;
  13
  14 public class GamePhysics {
  15
  16     public static final int PL_SPEED = 2;
  17
  18     private GameProc gameProc;
  19
  20     private Vector2 gravity;
  21
  22     public GamePhysics(GameProc gameProc) {
  23         this.gameProc = gameProc;
  24         gravity = new Vector2(0,.9f);
  25     }
  26
  27     private boolean checkJump(Rectangle rect, int dir) {
  28         int bl;
  29         switch (dir) {
  30             case 0:
  31                 bl = gameProc.world.getForeMap((int)((rect.x-8)/16),(int)((rect.y+rect.height-8)/16));
  32                 if (checkColl(new Rectangle(rect.x-8, rect.y-18, rect.width, rect.height))) bl=0;
  33                 break;
  34             case 1:
  35                 bl = gameProc.world.getForeMap((int)((rect.x+rect.width+8)/16),(int)((rect.y+rect.height-8)/16));
  36                 if (checkColl(new Rectangle(rect.x+rect.width+8, rect.y-18, rect.width, rect.height))) bl=0;
  37                 break;
  38             default:
  39                 bl=0;
  40         }
  41         return (bl>0 && Items.BLOCKS.getValueAt(bl).toJump() &&
  42                 (rect.y+rect.height)-Items.BLOCKS.getValueAt(bl).getRect((int)((rect.x-8)/16),(int)((rect.y+rect.height-8)/16)).y>8);
  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 (minY<0) minY=0;
  52         if (maxY>gameProc.world.getHeight()) maxY = gameProc.world.getHeight();
  53         for (int y=minY; y<maxY; y++) {
  54             for (int x=minX; x<maxX; x++) {
  55                 bl = gameProc.world.getForeMap(x,y);
  56                 if (bl>0 && Items.BLOCKS.getValueAt(bl).collision){
  57                     if (Intersector.overlaps(rect, Items.BLOCKS.getValueAt(bl).getRect(x,y))){
  58                         return true;
  59                     }
  60                 }
  61             }
  62         }
  63         return false;
  64     }
  65
  66     private int getBlock(Rectangle rect) {
  67         return gameProc.world.getForeMap((int)(rect.x+rect.width/2)/16, (int)(rect.y+rect.height/8*7)/16);
  68     }
  69
  70     private void dropPhy(Drop drop) {
  71         if (drop.move.y < 9) drop.move.y += gravity.y/4;
  72         drop.position.add(drop.move);
  73         drop.position.y = MathUtils.round(drop.position.y);
  74         while (checkColl(drop.getRect())) {
  75             drop.position.y--;
  76             drop.move.y = 0;
  77         }
  78     }
  79
  80     private void playerPhy(Player pl) {
  81         pl.position.add(pl.moveY);
  82         if (checkColl(pl.getRect())) {
  83             int d = -1;
  84             if (pl.moveY.y<0) d=1;
  85             if (d==-1) {
  86                 pl.flyMode = false;
  87                 pl.canJump = true;
  88             }
  89             pl.position.y = MathUtils.round(pl.position.y);
  90             while (checkColl(pl.getRect())) pl.position.y+=d;
  91             pl.moveY.setZero();
  92         } else {
  93             pl.canJump = false;
  94         }
  95
  96         if (Items.isFluid(getBlock(pl.getRect()))) {
  97             if (CaveGame.TOUCH && pl.moveX.x!=0 && !gameProc.swim && !pl.flyMode) gameProc.swim = true;
  98             if (!gameProc.swim) {
  99                 if (!pl.flyMode && pl.moveY.y < 4.5f) pl.moveY.add(gravity.x / 4, gravity.y / 4);
 100                 if (!pl.flyMode && pl.moveY.y > 4.5f) pl.moveY.add(0, -1f);
 101             } else {
 102                 pl.moveY.add(0, -.5f);
 103                 if (pl.moveY.y<-3) pl.moveY.y = -3;
 104             }
 105         } else {
 106             if (!pl.flyMode && pl.moveY.y<18) pl.moveY.add(gravity);
 107         }
 108
 109         pl.position.add(pl.moveX);
 110         if (checkColl(pl.getRect())) {
 111             if (pl.canJump && !pl.flyMode) pl.position.y-=8;
 112             if (checkColl(pl.getRect())) {
 113                 if (pl.canJump && !pl.flyMode) pl.position.y+=8;
 114                 int d = 0;
 115                 if (pl.moveX.x < 0) d = 1;
 116                 else if (pl.moveX.x > 0) d = -1;
 117                 pl.position.x = MathUtils.round(pl.position.x);
 118                 while (checkColl(pl.getRect())) pl.position.x += d;
 119             }
 120         }
 121         if (pl.position.x+pl.texWidth/2<0) pl.position.x+=gameProc.world.getWidth()*16;
 122         if (pl.position.x+pl.texWidth/2>gameProc.world.getWidth()*16) pl.position.x-=gameProc.world.getWidth()*16;
 123         if (pl.position.y > gameProc.world.getHeight()*16) {
 124             pl.position = gameProc.world.getSpawnPoint().cpy();
 125         }
 126         if (CaveGame.TOUCH && checkJump(pl.getRect(), pl.dir) && !pl.flyMode && pl.canJump && !pl.moveX.equals(Vector2.Zero)) {
 127             pl.moveY.add(0, -8);
 128             pl.canJump = false;
 129         }
 130     }
 131
 132     private void mobPhy(Mob mob) {
 133         mob.position.add(mob.moveY);
 134         if (checkColl(mob.getRect())) {
 135             int d = -1;
 136             if (mob.moveY.y<0) d=1;
 137             if (d==-1) mob.canJump = true;
 138             mob.position.y = MathUtils.round(mob.position.y);
 139             while (checkColl(mob.getRect())) mob.position.y+=d;
 140             mob.moveY.setZero();
 141             if (mob.getType() > 0) {
 142                 gameProc.world.setForeMap((int)mob.position.x/16, (int)mob.position.y/16, mob.getType());
 143                 mob.position.y = -1;
 144                 mob.dead = true;
 145             }
 146         } else {
 147             mob.canJump = false;
 148         }
 149
 150         if (mob.getType()==0 && Items.isFluid(getBlock(mob.getRect()))) {
 151             if (mob.moveY.y > 9) mob.moveY.add(0, -.9f);
 152             mob.moveY.add(0, -.5f);
 153             if (mob.moveY.y<-3) mob.moveY.y = -3;
 154         } else if (mob.moveY.y<18) mob.moveY.add(gravity);
 155
 156         mob.position.add(mob.moveX);
 157         if (checkColl(mob.getRect())) {
 158             if (mob.canJump) {
 159                 mob.position.y-=8;
 160             }
 161             if (checkColl(mob.getRect())) {
 162                 if (mob.canJump) mob.position.y+=8;
 163                 int d = 0;
 164                 if (mob.moveX.x < 0) d = 1;
 165                 else if (mob.moveX.x > 0) d = -1;
 166                 mob.position.x = MathUtils.round(mob.position.x);
 167                 while (checkColl(mob.getRect())) mob.position.x += d;
 168                 if (mob.canJump) mob.changeDir();
 169             }
 170         }
 171         if (mob.position.x+mob.width/2<0) mob.position.x+=gameProc.world.getWidth()*16;
 172         if (mob.position.x+mob.width/2>gameProc.world.getWidth()*16) mob.position.x-=gameProc.world.getWidth()*16;
 173         if (mob.position.y > gameProc.world.getHeight()*16) {
 174             mob.position.y = 0;
 175         }
 176         if (checkJump(mob.getRect(), mob.dir) && mob.canJump && !mob.moveX.equals(Vector2.Zero)) {
 177             mob.moveY.add(0, -8);
 178             mob.canJump = false;
 179         }
 180 }
 181
 182     public void update(float delta) {
 183         for (Iterator<Drop> it = gameProc.drops.iterator(); it.hasNext(); ) {
 184             Drop drop = it.next();
 185             dropPhy(drop);
 186             if (Intersector.overlaps(drop.getRect(), gameProc.player.getRect()))
 187                 drop.pickUpDrop(gameProc.player);
 188             if (drop.pickedUp) it.remove();
 189         }
 190
 191         for (Iterator<Mob> it = gameProc.mobs.iterator(); it.hasNext();) {
 192             Mob mob = it.next();
 193             mob.ai();
 194             mobPhy(mob);
 195             if (mob.dead)
 196                 it.remove();
 197         }
 198
 199         playerPhy(gameProc.player);
 200
 201         gameProc.renderer.camera.position.set(
 202                 gameProc.player.position.x+gameProc.player.texWidth/2 - gameProc.renderer.camera.viewportWidth/2,
 203                 gameProc.player.position.y+gameProc.player.height/2-gameProc.renderer.camera.viewportHeight/2,
 204                 0
 205         );
 206     }
 207
 208 }