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

   1 package ru.deadsoftware.cavecraft.game;
   2
   3 import com.badlogic.gdx.math.MathUtils;
   4 import com.badlogic.gdx.math.Rectangle;
   5 import com.badlogic.gdx.math.Vector2;
   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(0,1);
  20     }
  21
  22     private boolean checkColl(Rectangle rect) {
  23         int[] bl = new int [6];
  24         bl[0] = gameProc.world.getForeMap(((int)(rect.x)/16), ((int)rect.y/16));
  25         bl[1] = gameProc.world.getForeMap(((int)(rect.x+rect.width-1)/16), ((int)rect.y/16));
  26         bl[2] = gameProc.world.getForeMap(((int)(rect.x)/16), ((int)(rect.y+rect.height/2)/16));
  27         bl[3] = gameProc.world.getForeMap(((int)(rect.x+rect.width-1)/16), ((int)(rect.y+rect.height/2)/16));
  28         bl[4] = gameProc.world.getForeMap(((int)(rect.x)/16), ((int)(rect.y+rect.height-1)/16));
  29         bl[5] = gameProc.world.getForeMap(((int)(rect.x+rect.width-1)/16), ((int)(rect.y+(rect.height-1))/16));
  30         for (int b: bl) if (b>0) {
  31             return true;
  32         }
  33         return false;
  34     }
  35
  36     private void playerPhy(Player pl) {
  37         pl.position.add(pl.moveY);
  38         if (checkColl(pl.getRect())) {
  39             pl.flyMode = false;
  40             pl.canJump = true;
  41             int d = -1;
  42             if (pl.moveY.y<0) d=1; else if (pl.moveY.y>0) d=-1;
  43             pl.position.y = MathUtils.round(pl.position.y);
  44             while (checkColl(pl.getRect())) pl.position.y+=d;
  45             pl.moveY.setZero();
  46         } else {
  47             pl.canJump = false;
  48         }
  49         if (!pl.flyMode) pl.moveY.add(gravity);
  50         pl.position.add(pl.moveX);
  51         if (pl.position.x<0 ||
  52                 pl.position.x+pl.width>gameProc.world.getWidth()*16)
  53             pl.position.sub(pl.moveX);
  54         if (checkColl(pl.getRect())) {
  55             int d = 0;
  56             if (pl.moveX.x<0) d=1; else if (pl.moveX.x>0) d=-1;
  57             pl.position.x = MathUtils.round(pl.position.x);
  58             while (checkColl(pl.getRect())) pl.position.x+=d;
  59         }
  60         switch (pl.dir) {
  61             case 0:
  62                 gameProc.renderer.camTargetPos.x = pl.position.x-gameProc.renderer.camera.viewportWidth+100;
  63                 break;
  64             case 1:
  65                 gameProc.renderer.camTargetPos.x = pl.position.x-100;
  66                 break;
  67         }
  68         if (gameProc.renderer.camTargetPos.x < 0) gameProc.renderer.camTargetPos.x = 0;
  69         if (gameProc.renderer.camTargetPos.x + gameProc.renderer.camera.viewportWidth >
  70                 gameProc.world.getWidth()*16)
  71             gameProc.renderer.camTargetPos.x = gameProc.world.getWidth()*16-gameProc.renderer.camera.viewportWidth;
  72     }
  73
  74     private void mobPhy(Mob mob) {
  75         mob.position.add(mob.moveY);
  76         if (checkColl(mob.getRect())) {
  77             mob.canJump = true;
  78             int d = -1;
  79             if (mob.moveY.y<0) d=1; else if (mob.moveY.y>0) d=-1;
  80             mob.position.y = MathUtils.round(mob.position.y);
  81             while (checkColl(mob.getRect())) mob.position.y+=d;
  82             mob.moveY.setZero();
  83         } else {
  84             mob.canJump = false;
  85         }
  86         mob.moveY.add(gravity);
  87         mob.position.add(mob.moveX);
  88         if (mob.position.x<32 ||
  89                 mob.position.x+mob.width>gameProc.world.getWidth()*16-32)
  90             mob.position.sub(mob.moveX);
  91         if (checkColl(mob.getRect())) {
  92             int d = 0;
  93             if (mob.moveX.x<0) d=1; else if (mob.moveX.x>0) d=-1;
  94             mob.position.x = MathUtils.round(mob.position.x);
  95             while (checkColl(mob.getRect())) mob.position.x+=d;
  96         }
  97 }
  98
  99     public void update(float delta) {
 100
 101         for (Mob mob : gameProc.mobs) {
 102             mob.ai();
 103             mobPhy(mob);
 104         }
 105         playerPhy(gameProc.player);
 106
 107         if (gameProc.renderer.camera.position.x - gameProc.renderer.camTargetPos.x <= 8 &&
 108                 gameProc.renderer.camera.position.x - gameProc.renderer.camTargetPos.x >= -8) {
 109             gameProc.renderer.camera.position.x = gameProc.renderer.camTargetPos.x;
 110         }
 111         if (gameProc.renderer.camera.position.x > gameProc.renderer.camTargetPos.x) {
 112             gameProc.renderer.camera.position.sub(16,0,0);
 113         }
 114         if (gameProc.renderer.camera.position.x < gameProc.renderer.camTargetPos.x) {
 115             gameProc.renderer.camera.position.add(16,0,0);
 116         }
 117         gameProc.renderer.camera.position.y = gameProc.player.position.y+gameProc.player.height/2
 118                 -gameProc.renderer.camera.viewportHeight/2;
 119     }
 120
 121 }