nlua_camera.c

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/*
 * See Licensing and Copyright notice in naev.h
 */
#include <lauxlib.h>
 
#include "naev.h"
#include "nlua_camera.h"
 
#include "camera.h"
#include "conf.h"
#include "log.h"
#include "nlua_pilot.h"
#include "nlua_vec2.h"
#include "nluadef.h"
#include "player.h"
#include "spfx.h"
 
/* Camera methods. */
static int camL_set( lua_State *L );
static int camL_get( lua_State *L );
static int camL_setZoom( lua_State *L );
static int camL_getZoom( lua_State *L );
static int camL_shake( lua_State *L );
static const luaL_Reg cameraL_methods[] = {
   { "set", camL_set },
   { "get", camL_get },
   { "setZoom", camL_setZoom },
   { "getZoom", camL_getZoom },
   { "shake", camL_shake },
   {0,0}
}; 
int nlua_loadCamera( nlua_env env )
{
   nlua_register(env, "camera", cameraL_methods, 0);
   return 0;
}
 
static int camL_set( lua_State *L )
{
   Pilot *p;
   vec2 *vec;
   double x, y, d;
   int hard_over, speed;
 
   /* Handle arguments. */
   p = NULL;
   vec = NULL;
   if (lua_ispilot(L,1)) {
      LuaPilot lp = lua_topilot(L,1);
      p = pilot_get( lp );
      if (p==NULL)
         return 0;
      vec = &p->solid->pos;
   }
   else if (lua_isvector(L,1))
      vec = lua_tovector(L,1);
   else if (lua_isnoneornil(L,1)) {
      if (player.p != NULL) {
         p = player.p;
         vec = &player.p->solid->pos;
      }
   }
   else
      NLUA_INVALID_PARAMETER(L);
   hard_over = !lua_toboolean(L,2);
   cam_getPos( &x, &y );
   if (vec != NULL)
      d = MOD( vec->x-x, vec->y-y );
   else
      d = 5000.;
   speed = luaL_optinteger(L,3,MIN(2000.,d));
 
   /* Set the camera. */
   if (p != NULL)
      cam_setTargetPilot( p->id, hard_over*speed );
   else if (vec != NULL)
      cam_setTargetPos( vec->x, vec->y, hard_over*speed );
   return 0;
}
 
static int camL_get( lua_State *L )
{
   vec2 v;
   cam_getPos( &v.x, &v.y );
   lua_pushvector( L, v );
   return 1;
}
 
static int camL_setZoom( lua_State *L )
{
   double zoom = luaL_optnumber(L,1,-1.);
   int hard_over = lua_toboolean(L,2);
   double speed = luaL_optnumber(L,3,conf.zoom_speed);
 
   /* Handle arguments. */
   if (zoom > 0.) {
      zoom = 1.0 / zoom;
      cam_zoomOverride( 1 );
      if (hard_over) {
         cam_setZoom( zoom );
         cam_setZoomTarget( zoom, speed );
      }
      else
         cam_setZoomTarget( zoom, speed );
   }
   else {
      cam_zoomOverride( 0 );
      cam_setZoomTarget( 1., speed );
   }
   return 0;
}
 
static int camL_getZoom( lua_State *L )
{
   lua_pushnumber( L, 1.0/cam_getZoom() );
   lua_pushnumber( L, 1.0/conf.zoom_far );
   lua_pushnumber( L, 1.0/conf.zoom_near );
   return 3;
}
 
static int camL_shake( lua_State *L )
{
   double amplitude = luaL_optnumber(L,1,1.);
   spfx_shake( amplitude );
   return 0;
}