Game Development Reference
In-Depth Information
}
break;
case MOVE_STOP:
//trace("stopped");
break;
}
}
tempEnemy.currRow = tempEnemy.nextY / tileWidth;
tempEnemy.currCol = tempEnemy.nextX / tileHeight;
tempEnemy.updateCurrentTile();
}
//** end added iteration #6
Remember that this code needs to be added to the existing
update
function. We have not shown
the final close bracket (
}
) to finish off the function because it is already in the existing code.
As you can see, the code to update the enemy and move them through tunnels is identical to the
code for the player.
Here are the additions to the
render
function that will handle enemy tanks. The
render
function
code for the enemy tanks is very similar to the
render
function code for the player. The biggest
difference is the inclusion of two function calls that perform artificial intelligence operations for the
enemy tanks. These two calls are
chaseObject
and the
checkLineOfSight
functions. Add this
code to the pre-existing
render
function under the code for the player render logic:
//** added in iteration #6
var enemyLength:int = enemyList.length-1;
for (var ctr:int = enemyLength; ctr >= 0; ctr--) {
tempEnemy = enemyList[ctr];
tempEnemy.x = tempEnemy.nextX;
tempEnemy.y = tempEnemy.nextY;
setCurrentRegion(tempEnemy);
if (checkCenterTile(tempEnemy)) {
//trace("enemy @ center tile");
if (!tempEnemy.inTunnel) {
switchMovement(MOVE_STOP, tempEnemy);
chaseObject(player, tempEnemy);
}
}
//should enemy fire
checkLineOfSight(player, tempEnemy);
tempEnemy.renderCurrentTile();
}
//** end added in iteration #6
Again, we have not shown the final
}
for the function, because it should already exist in the code.
