ai.c

#include "ai.h"

void AI_move_to_ship_and_shot(enemy *this)
{
  if(SDL_GetTicks() - this->ai_timestop > 1250)
  {
    enemy_set_dir_to_ship(this);
    this->ai_timestop = SDL_GetTicks();
  }
  
  enemy_move(this);
  enemy_shot(this);
}
void AI_move_fast_to_ship_and_shot(enemy *this)
{
  this->dir_x = -4;
  enemy_set_dir_to_ship(this);
  this->dir_x = -1;
  
  enemy_move(this);
  enemy_shot(this);
}
void AI_move_to_ship_and_dodge(enemy *this)
{
  if(SDL_GetTicks() - this->ai_timestop > 1250)
  {
    enemy_set_dir_to_ship(this);
    this->ai_timestop = SDL_GetTicks();
  }
  
  enemy_dodge(this);
  enemy_move(this);
  enemy_shot(this);
}
void AI_move_into_screen_and_shot(enemy *this)
{
  if(this->x > SDL_GetVideoSurface()->w - get_enemy_w(this->level) - 10)
  {
    enemy_set_dir_to_ship(this);
  }
  else
  {
    this->dir_x = -4;
    enemy_set_dir_to_ship(this);
    
    this->dir_x = 0;
  }
  
  enemy_move(this);
  enemy_shot(this);
}
void AI_move_into_screen_and_dodge(enemy *this)
{
  if(this->x > SDL_GetVideoSurface()->w - get_enemy_w(this->level) - 10)
  {
    enemy_set_dir_to_ship(this);
  }
  else
  {
    if(SDL_GetTicks() - this->ai_timestop > 750)
    {
      this->dir_x = -1;
      enemy_set_dir_to_ship(this);
      this->ai_timestop = SDL_GetTicks();
    }
    
    this->dir_x = 0;
    enemy_dodge(this);
  }
  
  enemy_move(this);
  enemy_shot(this);
}
void AI_move_into_screen_and_dodge_quick(enemy *this)
{
  if(this->x > SDL_GetVideoSurface()->w - get_enemy_w(this->level) - 10)
  {
    enemy_set_dir_to_ship(this);
  }
  else
  {
    /* point 'this' to ship */
    if(SDL_GetTicks() - this->ai_timestop > 750)
    {
      this->dir_x = -1;
      enemy_set_dir_to_ship(this);
      this->ai_timestop = SDL_GetTicks();
    }
    
    /* dodge bullets with 4 x speed */
    this->dir_x = -4.0;
    enemy_dodge(this);
    
    /* set dir_x to 0 */
    this->dir_x = 0;
  }
  
  enemy_move(this);
  enemy_shot(this);
}