Isolate Movement

dtools22

Hello everyone,

I am working on a game project which has a player sprite that moves using the WSAD keys. W and S move the player forwards and backwards while A and D rotate left and right. Below is the code I used to perform this.

class Player {
  float inputX, inputY, z, v;
  float inputW, inputH;
  float SPD = 2, ROT = .05;

  Player(float posX, float posY, float posW, float posH) {
    inputX = posX;
    inputY = posY;
    inputW = posW;
    inputH = posH;
  }

  void update() {
    v = (up? SPD : 0) - (down? SPD : 0);
    z += (right?  ROT : 0) - (left?  ROT : 0);

    if (inputX < 370 && cos(z) < 0 || inputX > 1550 && cos(z) > 0) {
      SPD = 0;
    } else {
      SPD = 2;
    }
    if (inputY < 50 && sin(z) < 0 || inputY > 600 && sin(z) > 0) {
      SPD = 0;
    }

    inputX +=  cos(z)*v;
    inputY +=  sin(z)*v;
  }

  void display() {
    translate(inputX, inputY);
    rotate(z);

    noStroke();
    fill(#008000); 
    rect(inputW/-2, inputH/-2, inputW, inputH);

    stroke(0);
    noFill();
    ellipse(10, 0, 5, 5);
  }
}

My problem is that I am trying to have the player character move "underneath" other objects on the map. Normally I would do this by placing the object lower in the programing, but when I do that with the code the translate(inputX, inputY) effects the objects as well and they move and rotate as the player does. How can I rewrite this code to only effect the player sprite?

Thank you for the help.

TfGuy44

Use pushMatrix() and popMatrix(). Specifically, use pushMatrix() before your translate() and rotate() calls, and popMatrix() aftter you've drawn your player.

dtools22

As always TfGuy44, that is very helpful. Thank you!