Dodge is a simple and easy to play platforming video game where the player tries to avoid the falling objects for as long as possible. This idea came from the desire to challenge myself to go outside of my comfort zone and try making a game. I only allowed myself to use vanilla JavaScript, HTML, CSS, and the keymaster library.
Collision detection logic constantly checks with every cycle of the game loop if the player object is overlapping with a platform object and ends the game if this condition is met. This was an interesting feature to figure out by understanding the difference in measurements based on which side both objects are overlapping.
Game.prototype.checkCollisions = function(startAnimate, startCreate) {
let allObj = this.allObjects();
for (let i = 0; i < allObj.length-1; i++) {
let player = allObj[allObj.length - 1]
if (allObj[i].isCollidedWith(player)) {
this.collided = true;
this.reset(startAnimate, startCreate);
}
}
}
GameObject.prototype.isCollidedWith = function(otherObj) {
let top1 = this.pos[1]
let top2 = otherObj.pos[1]
// repeat for bottom, left, and right
if (top1 > bottom2 || right1 < left2 || bottom1 < top2 || left1 > right2) {
return false;
}
return true;
}
The player is able to seemlessly wrap from one side of the screen to the other when breaking the game boundaries. This feature was created to help players have an even bigger advantage in-game and keep the difficulty balanced.
Game.prototype.wrap = function(pos) {
if (pos[0] > this.DIM_X + 20) {
pos[0] = (pos[0] % this.DIM_X) - 40;
} else if (pos[0] < -20) {
pos[0] = this.DIM_X + 20;
}
return pos;
}- Implement levels with increasing difficulty over time
- Change colors of platforms and background animations over time
- Improve visualizations