commandergenius/src/ai/baby.cpp

#include "../sdl/sound/CSound.h"

#include "../keen.h"
#include "../include/game.h"

#include "../include/enemyai.h"

// Baby Vorticon (the superfast little blue creatures that knock you down)
// (ep 2 & 3)

#define BABY_RUN        0
#define BABY_DYING      1
#define BABY_DEAD       2

#define BABY_WALK_SPEED         15

#define BABY_WALK_ANIM_RATE     20

#define BABY_WALK_LEFT_FRAME    48
#define BABY_WALK_RIGHT_FRAME   52
#define BABY_FRY_FRAME          56
#define BABY_DEAD_FRAME         57

#define BABY_SMALLJUMP_PROB     20

#define BABY_FRY_TIME           80
#define BABY_DIE_INERTIA        20

#define BABY_JUMP_BIG           1
#define BABY_JUMP_SMALL         0
void baby_jump(int o, int big);

void baby_ai(int o, stLevelControl levelcontrol)
{
unsigned int ep3;

  if (objects[o].needinit)
  {
    objects[o].ai.baby.state = BABY_RUN;
    objects[o].ai.baby.dir = RIGHT;
    objects[o].ai.baby.walkframe = 0;
    objects[o].ai.baby.walktimer = 0;
    objects[o].ai.baby.inertia_x = 0;
    objects[o].ai.baby.inertia_y = 0;
    objects[o].canbezapped = 1;
    objects[o].needinit = 0;
    objects[o].blockedl = objects[o].blockedr = objects[o].blockedu = objects[o].blockedd = 1;

    if (levelcontrol.episode==3) ep3 = 1; else ep3 = 0;
    objects[o].sprite = BABY_WALK_RIGHT_FRAME - ep3;
    return;
  }
  if (objects[o].ai.baby.state==BABY_DEAD)
  {
    objects[o].inhibitfall = 0;
    return;
  }

  // need to -1 on the animation frames when in ep3
  if (levelcontrol.episode==3) ep3 = 1; else ep3 = 0;

  /* jumping */
  if (objects[o].ai.baby.inertia_y < 0 || !objects[o].blockedd)
  {
    if (objects[o].blockedu && objects[o].ai.baby.inertia_y < 0)
    {
      objects[o].ai.baby.inertia_y = 0;
    }

    objects[o].y += objects[o].ai.baby.inertia_y;

    if (objects[o].ai.baby.jumpdectimer >= objects[o].ai.baby.jumpdecrate)
    {
      if (objects[o].ai.baby.inertia_y < (1<<CSF))
      {
        objects[o].ai.baby.inertia_y++;
      }
      objects[o].ai.baby.jumpdectimer = 0;
    }
    else objects[o].ai.baby.jumpdectimer++;
  }
  else
  {
    // blockedd = 1, and inertia_y > 0
    objects[o].ai.baby.inertia_y = 0;
    if (objects[o].ai.baby.state == BABY_RUN)
    {
      if (rand()%BABY_SMALLJUMP_PROB == (BABY_SMALLJUMP_PROB/2))
      {
        baby_jump(o, BABY_JUMP_SMALL);
      }
    }
  }


  // got hit?
  if (objects[o].zapped)
  {
       if (objects[o].zapped > 1 || !levelcontrol.hardmode)
       {  // we're fried!!
         if (objects[o].ai.baby.state != BABY_DYING)
         {
             objects[o].ai.baby.dietimer = 0;
             objects[o].ai.baby.state = BABY_DYING;
             objects[o].ai.baby.jumpdecrate = 5;
             objects[o].sprite = BABY_FRY_FRAME - ep3;
             objects[o].zapped = 0;
             objects[o].canbezapped = 0;

             if (objects[o].onscreen && !g_pSound->isPlaying(SOUND_VORT_DIE))
             {
            	 g_pSound->playStereofromCoord(SOUND_VORT_DIE, PLAY_NOW, objects[o].scrx);

             }

             if (objects[o].ai.baby.dir == RIGHT)
             {
               objects[o].ai.baby.inertia_x = BABY_DIE_INERTIA;
             }
             else
             {
               objects[o].ai.baby.inertia_x = -BABY_DIE_INERTIA;
             }
         }
       }
  }

  // touched player
   if (objects[o].touchPlayer && objects[o].ai.baby.state!=BABY_DYING && !player[objects[o].touchedBy].pfrozentime)
   {
      player[objects[o].touchedBy].pdir = player[objects[o].touchedBy].pshowdir = objects[o].ai.baby.dir;
      freezeplayer(objects[o].touchedBy);
   }

  switch(objects[o].ai.baby.state)
  {
   case BABY_DYING:
     if ((objects[o].ai.baby.inertia_x < 0 && objects[o].blockedl) ||\
         (objects[o].ai.baby.inertia_x > 0 && objects[o].blockedr))
     {
       objects[o].ai.baby.inertia_x = 0;
     }

     objects[o].x += objects[o].ai.baby.inertia_x;
     if (objects[o].ai.baby.xdectimer >= 10)
     {
       if (objects[o].ai.baby.inertia_x < 0)
       {
         objects[o].ai.baby.inertia_x++;
       }
       else if (objects[o].ai.baby.inertia_x > 0)
       {
         objects[o].ai.baby.inertia_x--;
       }

       if (objects[o].ai.baby.inertia_x == 0 &&\
           objects[o].ai.baby.inertia_y == 0 &&\
           objects[o].sprite==(BABY_DEAD_FRAME-ep3))
       {
         objects[o].ai.baby.state = BABY_DEAD;
       }
       objects[o].ai.baby.xdectimer = 0;
     }
     else objects[o].ai.baby.xdectimer++;

     if (objects[o].ai.baby.dietimer > BABY_FRY_TIME)
     {
         objects[o].sprite = BABY_DEAD_FRAME-ep3;
     }
     else objects[o].ai.baby.dietimer++;
   break;
   case BABY_RUN:
     /* run in appropriate direction */
     if (objects[o].ai.baby.dir==RIGHT)
     { // running right
       objects[o].sprite = BABY_WALK_RIGHT_FRAME + objects[o].ai.baby.walkframe - ep3;
       if (objects[o].blockedr)
       {
         objects[o].ai.baby.dir = LEFT;
         if (rand()&1) baby_jump(o, BABY_JUMP_BIG);
       }
       else
       {
         objects[o].x += BABY_WALK_SPEED;
       }
     }
     else
     { // running left
       objects[o].sprite = BABY_WALK_LEFT_FRAME + objects[o].ai.baby.walkframe - ep3;
       if (objects[o].blockedl)
       {
         objects[o].ai.baby.dir = RIGHT;
         if (rand()&1) baby_jump(o, BABY_JUMP_BIG);
       }
       else
       {
         objects[o].x -= BABY_WALK_SPEED;
         objects[o].inhibitfall = 1;
       }
     }

     /* run animation */
     if (objects[o].ai.baby.walktimer > BABY_WALK_ANIM_RATE)
     {
       objects[o].ai.baby.walkframe++;
       if (objects[o].ai.baby.walkframe > 3) objects[o].ai.baby.walkframe = 0;
       objects[o].ai.baby.walktimer = 0;
     } else objects[o].ai.baby.walktimer++;
   break;
  }
}

#define BABY_BIGJUMP                 25
#define BABY_BIGJUMP_DEC_RATE        20

#define BABY_MIN_SMALLJUMP             23
#define BABY_SMALLJUMP_MIN_DEC_RATE    18
#define BABY_MAX_SMALLJUMP             30
#define BABY_SMALLJUMP_MAX_DEC_RATE    20
void baby_jump(int o, int big)
{
    if ((rand()&2)==0) big = 1-big;
    if (big==BABY_JUMP_BIG)
    {
      objects[o].ai.baby.inertia_y = -BABY_BIGJUMP;
      objects[o].ai.baby.jumpdecrate = BABY_BIGJUMP_DEC_RATE;
    }
    else
    {
      objects[o].ai.baby.inertia_y = -20;//(rand()%(BABY_MAX_SMALLJUMP-BABY_MIN_SMALLJUMP))+BABY_MIN_SMALLJUMP;
      objects[o].ai.baby.jumpdecrate = 10;//(rand()%(BABY_SMALLJUMP_MAX_DEC_RATE-BABY_SMALLJUMP_MIN_DEC_RATE))+BABY_SMALLJUMP_MIN_DEC_RATE;
    }


    objects[o].ai.baby.jumpdectimer = 0;
}