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