141 : If goal
Balthazar:
If you run the code now, the game will stop when you reach the third level. This is because we have code that assumes that each level has a 'goal' object. Since this is no longer the case, it will throw an exception (error) and stop when you get to a level without a goal (level 3 in our case).
Balthazar:
We can fix this by making the code work by having the draw_goal() and check_goal_collisions() functions check to make sure it has a valid goal object before trying to draw it.
function draw_goal(ctx) {
var level = _levels[_game.current_level];
var goal = level.goal;
if (goal) {
ctx.fillStyle = "green";
ctx.fillRect(goal.x - goal.origin_x, goal.y - goal.origin_y,
goal.width, goal.height);
}
}
if (goal) {
ctx.fillStyle = "green";
ctx.fillRect(goal.x - goal.origin_x, goal.y - goal.origin_y,
goal.width, goal.height);
}
}
function check_goal_collisions() {
var level = _levels[_game.current_level];
var goal = level.goal;
if (goal) {
if (collide(goal, _player) && level.player_has_key) {
start_level(goal.next_level);
}
}
}
if (goal) {
if (collide(goal, _player) && level.player_has_key) {
start_level(goal.next_level);
}
}
}