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#include "Game.h"
#include <cstdlib>
/**
* Costruttore, crea le pedine del gioco
*/
Game::Game(int n_players, Terrain *t, int humanSpeed, int computerSpeed) : n_players(n_players),
terrain(t), adv(new Computer*[n_players])
{
u = v = 0;
flag = new Flag(terrain);
human = new Human(terrain, humanSpeed, flag);
for (int i=0; i<n_players; i++)
adv[i] = new Computer(terrain, computerSpeed, human);
}
/**
* Dealloca la memoria occupata
*/
Game::~Game()
{
delete flag;
delete human;
for (int i=0; i<n_players; i++)
delete adv[i];
delete []adv;
}
void Game::setU(int u)
{
this->u = u;
}
void Game::setV(int v)
{
this->v = v;
}
/**
* Calcola il tempo trascorso in ms
*/
double Game::deltaT()
{
long newT = glutGet(GLUT_ELAPSED_TIME);
float delta = static_cast<float>(newT - lastT)/1000.0;
lastT = newT;
return delta;
}
void Game::start()
{
lastT = glutGet(GLUT_ELAPSED_TIME);
}
void Game::resume()
{
lastT = glutGet(GLUT_ELAPSED_TIME);
}
/**
* Disegna l'intera scena, chiamando le funzioni di disegno delle varie parti
*/
void Game::draw()
{
// ripulisco la scena
glClearColor(0.23921568627450981f, 0.396078431372549f, 0.62745098039215685f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glShadeModel(GL_SMOOTH);
glRotatef(alpha - 90, 0, 1, 0);
// luci
GLfloat black[4] = { 0, 0, 0, 1 };
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, 0);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
GLfloat aLite0[4] = { 0.1f, 0.1f, 0.1f, 1.0f };
GLfloat dLite0[4] = { 1.1f, 0.9f, 0.9f, 1.0f };
GLfloat sLite0[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
GLfloat posLite0[4] = { -1024.0f, 1024.0f, -1024.0f, 1.0f };
glLightfv(GL_LIGHT0, GL_AMBIENT, aLite0);
glLightfv(GL_LIGHT0, GL_DIFFUSE, dLite0);
glLightfv(GL_LIGHT0, GL_SPECULAR, sLite0);
glLightfv(GL_LIGHT0, GL_POSITION, posLite0);
GLfloat aLite1[4] = { 0.0f, 0.0f, 0.0f, 1.0f };
GLfloat dLite1[4] = { 0.3f, 0.3f, 0.3f, 1.0f };
GLfloat sLite1[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
GLfloat posLite1[4] = { 2048.0f, 1024.0f, 2048.0f, 1.0f };
glLightfv(GL_LIGHT1, GL_AMBIENT, aLite1);
glLightfv(GL_LIGHT1, GL_DIFFUSE, dLite1);
glLightfv(GL_LIGHT1, GL_SPECULAR, sLite1);
glLightfv(GL_LIGHT1, GL_POSITION, posLite1);
// Oggetti di scena
human->display();
terrain->drawTerrain(human->getX(), human->getZ());
for (int i = 0; i< n_players; i++)
adv[i]->display();
flag->display();
}
/**
* Calcola un frame del gioco, muovendo i giocatori e ritornando lo stato
* risultante.
*/
enum Game::Status Game::frame()
{
float dT = deltaT();
flag->update(dT);
if (human->move(v, u, dT, alpha))
return Won;
for (int i = 0; i< n_players; i++)
if (adv[i]->update(dT))
return Lost;
draw();
return Started;
}
void Game::dAlpha(float dAlpha) {
alpha += dAlpha;
}
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