GamePlay.cpp

#include "GamePlay.hpp"

/*
 a very crude 3D asteroids game - sorry if it runs slowly, there are no pointers
 */

GamePlay::GamePlay() {
    state = 0;
    
    player.set(5);
    player.setPosition(0, -20, -50);
        
    camera.setPosition(0, 0, 0);
    
    addAsteroids(50);
}

void GamePlay::run() {
    if(state == 0) playing();
    if(state == 1) gameOver();
}

void GamePlay::playing() {
    // increment score
    score = ofGetFrameNum();
    // add 10 more asteroids whenever score is multiple of 100
    if (score % 100 == 0) addAsteroids(10);
    // don't let asteroids size grow over 250
    if (asteroids.size() >= 250) asteroids.pop_back();
    
    // display score
    ofSetColor(160, 210, 214);
    ofDrawBitmapString("score: " + to_string(score), 20, 20);
    
    // camera perspective
    camera.begin();
        ofSetColor(255, ofRandom(200, 240));
        player.drawWireframe();
    
        for(int i = 0; i < asteroids.size(); i++) {
            asteroids[i].draw();
            asteroids[i].update(player);
            // game over
            if(asteroids[i].collision(player)) state = 1;
        }
    camera.end();
    
    borders();
}

void GamePlay::gameOver() {
    finalScore = score;
    ofSetColor(160, 210, 214);
    ofDrawBitmapString("game over\nscore: " + to_string(finalScore), ofGetWidth()*.5, ofGetHeight()*.5);
}

void GamePlay::addAsteroids(int num) {
    for(int i = 0; i < num; i++) {
        Asteroid a;
        asteroids.push_back(a);
    }
}

void GamePlay::move(float amount) {
    player.truck(amount);
}

void GamePlay::borders() {
    if(player.getX() >= 34) player.setPosition(34, -20, -50);
    if(player.getX() <= -34)player.setPosition(-34,-20, -50);
}