private boolean executeMovementAgent(Agent a, int wantsToMove) {
int currentLocation = a.getLocation();
int xCurrent = this.calcXFromCoor(currentLocation);
int yCurrent = this.calcYFromCoor(currentLocation);
int xWants = this.calcXFromCoor(wantsToMove);
int yWants = this.calcYFromCoor(wantsToMove);
boolean isRed = a.isRed();
// check if this is a valid movement request, otherwhise crash the game
// check if wantsToMove is in bounds
if (wantsToMove < 0 || wantsToMove >= this.gridIdentifier.length) {
System.err.println("REQUESTED MOVE OUT OF BOUNDS. EXITING.");
System.exit(-1);
}
// we can either move up, down, left or right, just check the four cases
// crash the game if the move is not one of these choices
if (!((xCurrent == xWants - 1 && yCurrent == yWants)
|| (xCurrent == xWants + 1 && yCurrent == yWants)
|| (yCurrent == yWants + 1 && xCurrent == xWants)
|| (yCurrent == yWants - 1 && xCurrent == xWants))) {
System.err.println(xCurrent);
System.err.println(yCurrent);
System.err.println(xWants);
System.err.println(yWants);
System.err.println("REQUESTED MOVE NOT UP,DOWN,RIGHT OR LEFT.");
System.exit(-1);
}
// move is not legal because there is a rock
if (gridIdentifier[wantsToMove].getIdentifier().equals(Tile.ROCK_TILE)) {
System.err.println("REQUESTED TO MOVE ON ROCK SQUARE.");
System.exit(-1);
}
// move is also illegal if you're tyring to move into the enemies camp
if ((gridIdentifier[wantsToMove].getIdentifier().equals(Tile.BLUE_CAMP_TILE) && isRed)
|| (gridIdentifier[wantsToMove].getIdentifier().equals(Tile.RED_CAMP_TILE) && !isRed)) {
System.err.println("REQUESTED TO MOVE ON ENEMIES CAMP.");
System.exit(-1);
}
// I guess if we get here, we can actually move!
// Then there are three options, either the goto tile is a coin or else
// its a grass field or its own camp
// if its a camp, the sprite shouldnt move, but if is carrying a coin it
// should drop of the coin and the movement list should go empty
if (isRed && (gridIdentifier[wantsToMove].getIdentifier().equals(Tile.RED_CAMP_TILE))) {
int coin = a.getCarrying();
if (coin != -1) {
coinDrop(isRed, a.getCarrying());
a.setCarrying(-1);
}
a.clearMovementList();
return false;
} else if (!isRed
&& (gridIdentifier[wantsToMove].getIdentifier().equals(Tile.BLUE_CAMP_TILE))) {
int coin = a.getCarrying();
if (coin != -1) {
coinDrop(isRed, a.getCarrying());
a.setCarrying(-1);
}
a.clearMovementList();
return false;
}
// if its a coin, two things can happen, either the actor is already
// carrying a coin, in which case the coin being held is dropped at the
// current location of the actor, then the actor moves to destination
// and removed the coin there and puts it in inventory
// else if he is not carrying anything, he removes the coin and moves to
// the target square
if ((gridIdentifier[wantsToMove].getIdentifier().equals(Tile.COIN_TILE))) {
int carrying = a.getCarrying();
// if he is carrying something, drop the coint
if (carrying != -1) {
// current location becomes a coin
gridIdentifier[currentLocation] = mapper.get(Tile.COIN_TILE);
// update coint location of coin dropped
this.coinLocations.put(currentLocation, carrying);
} else {
gridIdentifier[currentLocation] = mapper.get(Tile.GRASS_TILE);
}
// targetlocation becomes sprite (red or blue)
if (isRed) {
gridIdentifier[wantsToMove] = mapper.get(Tile.RED_SPRITE_TILE);
} else {
gridIdentifier[wantsToMove] = mapper.get(Tile.BLUE_SPRITE_TILE);
}
// pick up the coin
int pickup = this.coinLocations.get(wantsToMove);
// give it to sprite
a.setCarrying(pickup);
// remove it from coint map
this.coinLocations.remove(wantsToMove);
// remove the action
a.popMovement();
a.setLocation(wantsToMove);
return true;
}
if ((gridIdentifier[wantsToMove].getIdentifier().equals(Tile.GRASS_TILE))) {
if (isRed) {
gridIdentifier[wantsToMove] = mapper.get(Tile.RED_SPRITE_TILE);
} else {
gridIdentifier[wantsToMove] = mapper.get(Tile.BLUE_SPRITE_TILE);
}
gridIdentifier[currentLocation] = mapper.get(Tile.GRASS_TILE);
a.popMovement();
a.setLocation(wantsToMove);
return true;
}
// this is still fatal if there is a head on collision, it is easier to
// just allow for passing movements
if (gridIdentifier[wantsToMove].getIdentifier().equals(Tile.BLUE_SPRITE_TILE)
|| gridIdentifier[wantsToMove].getIdentifier().equals(Tile.RED_SPRITE_TILE)) {
if (isRed) {
gridIdentifier[wantsToMove] = mapper.get(Tile.RED_SPRITE_TILE);
} else {
gridIdentifier[wantsToMove] = mapper.get(Tile.BLUE_SPRITE_TILE);
}
gridIdentifier[currentLocation] = mapper.get(Tile.GRASS_TILE);
a.popMovement();
a.setLocation(wantsToMove);
return true;
}
throw new RuntimeErrorException(new Error("Ran out of options."));
}
