Radar.cpp

/* 
 * File:   Radar.cpp
 * Author: gabriel
 * 
 * Created on 9 de Abril de 2011, 18:00
 */


#include "Radar.h"
#include "GLManager.h"
#include "externs.h"
#include "ChangeMode.h"

using namespace std;

Radar::Radar() {
	screen_coords = new Vertex(50, 20, 0);
	dist = 0;
	range = GLManager::distance(conf.rfloat("hud:radar_range"));
}

void Radar::set_pos(Vertex* new_coords) {
	screen_coords->x += new_coords->x;
	screen_coords->y += new_coords->y;
	screen_coords->z += new_coords->z;
}

void Radar::update() {
	dist = g_keys->get_closest_distance();
}

void Radar::setOrthographicProjection() {
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	glLoadIdentity();
	gluOrtho2D(0, 200, 0, 200);
	glScalef(1, -1, 1);
	glTranslatef(0, -200, 0);
	glMatrixMode(GL_MODELVIEW);
}

void Radar::resetPerspectiveProjection() {
	glMatrixMode(GL_PROJECTION);
	glPopMatrix();
	glMatrixMode(GL_MODELVIEW);
}

void Radar::render() {
	char *string = new char[50];
	switch (g_player->state) {
		case GAME_ON:
			if (g_keys->keys_left == 0)
				sprintf(string, "All keys catched. GO FOR THE TOILET!");
			else if (dist > range)
				sprintf(string, "Distance: > 500 meters");
			else
				sprintf(string, "Distance: %d", (int) dist);
			break;
		case GAME_OVER:
			sprintf(string, "GAME OVER. YOU LOST!");
			break;
		case GAME_WIN:
			sprintf(string, "YOU WON! Press ESC to quit");
			break;
	}

	int len, i;
	len = strlen(string);
	
	ChangeMode::setOrthographicProjection();
	glPushMatrix();
	glLoadIdentity();

	glColor3f(1.0f, 1.0f, 1.0f);
	glRasterPos2i(screen_coords->x, screen_coords->y);
	
	for (i = 0; i < len; i++) {
		glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, string[i]);
	}
	glPopMatrix();
	ChangeMode::resetPerspectiveProjection();
}