consolerpg.cpp

#include <stdio.h>
#include <iostream>
#include <stdlib.h> // need this for system
#include "platform_conio.h"
using namespace std;

void resetToStart() {
    platform_move(0,0);
}

char getCH() { // get a  single key from the user
    return platform_getchar();
}

struct Vec2 {
    int x, y;
    bool isEqual(Vec2 point) {
        return x == point.x && y == point.y;
    }
};

struct Entity {
    Vec2 position;
    char icon;
};

int whichPlayerIsHere(Vec2 point, Entity * list, int listSize) {
    for(int i = 0; i < listSize; ++i) {
        if(list[i].position.isEqual(point)) {
            return i;
        }
    }
    return -1;
}

int main() {
    Vec2 size = {20, 15};
    Entity players[] = {
        {{ 4, 5}, '@'},
        {{ 2, 4}, 'A'},
        {{12, 8}, 'X'}
    };
    const int playersCount = sizeof(players)/sizeof(players[0]);
    int userInput;
    bool gameRunning = true;
    int selectedPlayer = 0;
    // gameloop
    while(gameRunning) {
        // draw
        resetToStart();
        Vec2 cursor;
        for(cursor.y = 0; cursor.y < size.y; ++cursor.y) {
            for(cursor.x = 0; cursor.x < size.x; ++cursor.x) {
                putchar('.');
            }
            putchar('\n');
        }
        for(int i = 0; i < playersCount; ++i)
        {
            platform_move(players[i].position.y, players[i].position.x);
            putchar(players[i].icon);
        }
        while(!platform_kbhit()) { platform_sleep(1); } // wait for key press
        // get input from user
        userInput = platform_getchar();
        // process game based on user input
        switch(userInput) {
        case 'w':   players[selectedPlayer].position.y--;   break;
        case 'a':   players[selectedPlayer].position.x--;   break;
        case 's':   players[selectedPlayer].position.y++;   break;
        case 'd':   players[selectedPlayer].position.x++;   break;
        case 'q':   gameRunning = false;    break;
        case '+':
            selectedPlayer++;
            if(selectedPlayer >= playersCount)
                selectedPlayer = 0;
            break;
        case '-':
            selectedPlayer--;
            if(selectedPlayer <= 0)
                selectedPlayer = playersCount-1;
            break;
        case 'e':   players[selectedPlayer].icon++; break;
        }
    }
}