/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://playgramming.sketchpad.cc/sp/pad/view/ro.GkJjoghz8Zs/rev.777
 * 
 * authors: 
 *   Devon Scott-Tunkin

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



/* @pjs preload="/static/uploaded_resources/p.9705/sprites_map_claudius.png"; */

class Knight
{
  PImage image;
  PVector position;
  int frameRow;
  int frameColumn;
  float frameTimer;
  PVector velocity;
  float speed;
}

int left = 0;
int right = 0;
int up = 0;
int down = 0;

Knight claudius = new Knight();

void setup() {  // this is run once.   
    size(300, 300); 

    claudius.image =  loadImage("/static/uploaded_resources/p.9705/sprites_map_claudius.png");
    claudius.position = new PVector(100, 100);
    claudius.frameTimer = 1.0;
    claudius.frameRow = 0;
    claudius.speed = 3;

} 

void draw() {  // this is run repeatedly. 
    background(255);
    claudius.frameTimer += 0.1; // 0.1 is the framerate or speed of animation. 
    float velocityX = claudius.speed * (right - left);
    claudius.position.x += velocityX;
    
    float velocityY = claudius.speed * (down - up);
    claudius.position.y += velocityY;
    
    if (claudius.frameTimer >= 6)
    {
        claudius.frameTimer = 1;
    }
    if (velocityX == 0 && velocityY == 0) {
        claudius.frameTimer = 0;
    }
    
    PImage frameImage = claudius.image.get((int)claudius.frameTimer * 32, claudius.frameRow * 64, 32, 64);
    
    image(frameImage, claudius.position.x, claudius.position.y);
}

void keyPressed() {
    if (keyCode == UP) {
        claudius.frameRow = 2;
        up = 1;
    }
    if (keyCode == DOWN) {
        claudius.frameRow = 0;
        down = 1;
    }
    if (keyCode == RIGHT) {
        claudius.frameRow = 3;
        right = 1;
    }
    if (keyCode == LEFT) {
        claudius.frameRow = 1;
        left = 1;
    }
}

void keyReleased() {
    if (keyCode == RIGHT) {
        right = 0;
    }
    if (keyCode == LEFT) {
        left = 0;
    }
    if (keyCode == UP) {
        up = 0;
    }
    if (keyCode == DOWN) {
        down = 0;
    }
}