/**
* renderEntities - called by the render function and each game tick
*/
function renderEntities() {
/* Render Enemies
* Loop through all of the objects within the allEnemies array and call
* the render method.
*/
Game.allEnemies.forEach(function(enemy) {
enemy.render();
});
/* Render player
* Renders the player on the canvas.
*/
Game.player.render();
/* Render gems
* Loop through all of the objects within the allGems array and call
* the render method.
*/
Game.allGems.forEach(function(gem) {
gem.render();
});
/* Render stats
* Renders the stat panel and containing elements at top of canvas
*/
Game.stats.render();
}
/**
* checkCollisions - determines if game entities have collided
* @return {[type]} [description]
*/
function checkCollisions() {
/**
* Check for the collision of two entities.
* Function accepts two arguments.
*/
/**
* collision
* @param {string} a - entity a
* @param {string} b - entity b
* @return {boolean}
*/
function collision(a, b) {
return a.x < b.x + b.width &&
a.x + a.width > b.x &&
a.y < b.y + b.height &&
a.y + a.height > b.y;
}
/* Check enemy collisions.
* If there is a collision, reset the player's position
* and update the players lives or reset the game.
*/
Game.allEnemies.forEach(function(enemy) {
if (collision(Game.player, enemy)) {
/* Reset the players position.
*/
Game.player.hit();
/* If the player has more than one life remaining,
* call the player.updateLives method and remove a life.
* If the player has no more lives remaining, reset the game.
*/
return Game.player.lives > 1 ? Game.player.updateLives('remove', 1) : Game.level.reset();
}
});
/* Check gem collisions.
* If there is a collision, call the gem.clear() method to
* clear the gem from the canvas and call the stats.updateGems
* to update the gems count and increase the score by 300 points.
*/
Game.allGems.forEach(function(gem) {
if (collision(Game.player, gem)) {
gem.clear();
Game.stats.updateGems();
}
});
/* Check goal collisions.
* If the player gets to the other side, update the level
*/
if (Game.player.y == 70) {
Game.level.update();
}
}