• I don't want weapons to hit or shoot your own vehicle, so you can imagine the weapon barrel is essentially infinite length.
  
• There are more complex solutions, but all I want is a reduced box for allowable movement - an adjusted Min X, Max X, Min Y and Max Y that take into account surrounding colliders on the vehicle.
  
• All colliders to check against are AABB non-rotated box colliders.
  
• You can assume all other parts are non-moving.
  
• Sometimes there are multiple solutions where you can choose to reduce either X or Y to avoid something. I currently keep track of several options and at the end, take the solution with the biggest remaining area.
  

• With raycasts. Relatively simple. Raycast a whole lot, evenly spaced at different angles, and reduce rotation range based on the hits. But I never managed to get a good tradeoff between accuracy and performance. It was either not accurate enough or not fast enough (game is in the Unity engine). I need to be able to update ranges on-the-fly.
  
• Letting physics do it. Just put colliders on the weapon barrels and let them hit the vehicle and get stopped. This behaved in a janky way, wasted performance because I should be able to pre-calculate it, and didn't stop weapons shooting your own vehicle if the barrel missed something but a bullet didn't (extending the collider might do that but then I'd have to worry about other things hitting it etc).
  
• Checking other colliders manually. This is what I'm doing now. Look at every other collider on the vehicle, with early exits where possible, and convert its position into angle limits, then reduce the max rotation range as necessary. This sounds kinda simple, but in practice it's been extremely complicated and difficult to get right, and I still have things that don't work because I'm not doing it perfectly.
  

private void moveEnemy(List<GridCell> enemyPath, Enemy enemy) {
        SequenceAction multiMove = new SequenceAction();
        tmpMP2 = enemy.getCurrentAP();
        for (int i = 0; i < enemyPath.size(); i++) {
            if (tmpMP2 > i) {
                MoveToAction mta = new MoveToAction();
                mta.setPosition(enemyPath.get(i).getX() * 16, enemyPath.get(i).getY() * 16);
                mta.setDuration(0.2f);
                RunnableAction ra = new RunnableAction() {
                    @Override
                    public void run() {
                        tmpMP2--;
                        //enemy.setCurrentAP(tmpMP);

                    }
                };
                multiMove.addAction(ra);
                multiMove.addAction(mta);
            }
        }
        multiMove.addAction(new RunnableAction() {
            @Override
            public void run() {
                playerTurn = true;
                turnAnnounce.setText("Player turn: " + turnNumber);
            }
        });
        enemy.addAction(multiMove);
    }

Sistergodiva fucked around with this message at 07:43 on Feb 11, 2016

leper khan fucked around with this message at 08:18 on Feb 11, 2016

Inverness fucked around with this message at 16:14 on Feb 11, 2016