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How to make object movement smoother?

DeeMoo (9)
Hi!
My problem is that when i move my board (which is the rectangle) it is very choppy. My board will move a little then accelerate to a smooth movement until I press another key and it will stop again then continue. I hope this makes sense but in short I just want my board movement to be smoother. I already use setactivepage() and setvisualpage() but no luck. My code:

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#include <iostream>
#include <windows.h>
#include <graphics.h>
#include <conio.h>

using namespace std;

bool gameOver;
enum eDirection {STOP = 0, LEFT, UP, RIGHT, DOWN, END, PAUSE};
eDirection dir;
int windowW = 1200, windowH = 1000;
int bodyL = (windowW / 2) - 30, bodyT = (windowH / 2) -30, bodyR = (windowW / 2) + 30, bodyB = (windowH / 2) + 30;
int roomL = 200, roomT = 200, roomR = 1500, roomB = 1500; //board

void setup(){
    gameOver = false;
    rectangle(bodyL, bodyT, bodyR, bodyB);
    rectangle(roomL, roomT, roomR, roomB); //board
}
void imput(){
    if(_kbhit()){
        switch(_getch()){
            case 'a':
                dir = LEFT
                break;
            case 'w':
                dir = UP;
                break;
            case 'd':
                dir = RIGHT;
                break;
            case 's':
                dir = DOWN;
                break;
            case 'p':
                dir = PAUSE;
                break;
            case 'x':
                dir = END;
                break;
        }
    }
}
void logic(){
    switch(dir){
        case LEFT:
            roomL += 20;
            roomR += 20;
            break;
        case UP:
            roomT += 20;
            roomB += 20;
            break;
        case RIGHT:
            roomL -= 20;
            roomR -= 20;
            break;
        case DOWN:
            roomT -= 20;
            roomB -= 20;
            break;
        case PAUSE:
            system("pause");
            break;
        case END:
            exit(0);
            break;
    }
}
void draw(){
    rectangle(bodyL, bodyT, bodyR, bodyB);
    rectangle(roomL, roomT, roomR, roomB); //board
    dir = STOP;
}
int main()
{
    initwindow(windowW, windowH, "");
    setup();
    int page = 0;
    system("pause");
    while(!gameOver){
        setactivepage(page);
        setvisualpage(1 - page);
        cleardevice();
        imput();
        logic();
        draw();
        page = 1 - page;
        Sleep(20);
    }
    return 0;
}

Using Code::Blocks.
Thanks in advance !
Last edited on
jonnin (11437)
see if you can move less far per go, and reduce the sleep. you should not jump large amounts each iteration, users can see even a few pixels of teleportation.
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