// HUDNavigation.cpp
// Derek Meek
// 4-30-2004




#include "hud/hudnavigation.h"
#include "autopilot/autopilot.h"
#include "hud/hudtarget.h"
#include "ship/ship.h"
#include "object/object.h"
#include "render/3d.h"
#include "hud/hud.h"
#include "hud/hudbrackets.h"
#include "hud/hudtargetbox.h"


extern void hud_target_show_dist_on_bracket(int x, int y, float distance);
extern void draw_brackets_square_quick(int x1, int y1, int x2, int y2, int thick);
// Draws the Navigation stuff on the HUD
void HUD_Draw_Navigation()
{
	if (CurrentNav != -1 && Navs[CurrentNav].flags & NP_VALIDTYPE && !(Navs[CurrentNav].flags & NP_NOSELECT))
	{
		int in_cockpit;
		if (!(Viewer_mode & (VM_EXTERNAL | VM_DEAD_VIEW | VM_WARP_CHASE | VM_PADLOCK_ANY))) 
			in_cockpit = 1;
		else  
			in_cockpit = 0;

		//Players[Player_num].lead_indicator_active = 0;

		vertex target_point;					// temp vertex used to find screen position for 3-D object;
		vec3d *target_pos = Navs[CurrentNav].GetPosition();

		float dist = vm_vec_dist_quick(&Objects[Player_ship->objnum].pos, target_pos);

		// find the current target vertex 
		//
		// The 2D screen pos depends on the current viewer position and orientation.  

		
		color NavColor;

		unsigned int alpha = HUD_COLOR_ALPHA_MAX * 16;

		//if (CanAutopilot())
		//	alpha = HUD_COLOR_ALPHA_MAX * 16;

		if (Navs[CurrentNav].flags & NP_VISITED)
			gr_init_alphacolor( &NavColor,	0xFF, 0xFF, 0x00, alpha);
		else
			gr_init_alphacolor( &NavColor,	0x80, 0x80, 0xff, alpha);

		gr_set_color_fast(&NavColor);
		


		g3_rotate_vertex(&target_point, target_pos);
		g3_project_vertex(&target_point);


		int box_scale = 15;
		if (dist < 1000)
			box_scale = int(float(dist)/1000.0f * 15);
		if (box_scale < 4)
			box_scale=4;

		//SAFEPOINT(s)
		if (!(target_point.flags & PF_OVERFLOW) && target_point.codes == 0)
		{  // make sure point projected and target center is not on screen
			//hud_show_brackets(targetp, &target_point);

			int x = int(target_point.sx);
			int y = int(target_point.sy);

			gr_unsize_screen_pos( &x, &y );

			draw_brackets_square(x-box_scale, y-box_scale, x+box_scale, y+box_scale);

			gr_set_color_fast(&NavColor);
			// draw the nav name
			gr_string(x-(box_scale+10), y-(box_scale+20), Navs[CurrentNav].NavName);
			// draw distance to target in lower right corner of box
			hud_target_show_dist_on_bracket(x+(box_scale+10),y+(box_scale+10),dist);

		}


		if ( in_cockpit && target_point.codes != 0) {
			gr_set_color_fast(&NavColor);
			hud_draw_offscreen_indicator(&target_point, target_pos, dist);	
		}
	}
	/*
	else
	{
		gr_string( 20, 120, "No Nav Point Selected");
	}*/
}