Game Development

Game Loop

def game_loop(entities, dt):
    for entity in entities:
        entity.x += entity.vx * dt
        entity.y += entity.vy * dt
        entity.vy += 9.8 * dt

Collision Detection (AABB)

def aabb_collide(a, b):
    return (a.x < b.x + b.w and a.x + a.w > b.x and
            a.y < b.y + b.h and a.y + a.h > b.y)

Vector Math

def normalize(vx, vy):
    length = (vx * vx + vy * vy) ** 0.5
    if length == 0:
        return 0, 0
    return vx / length, vy / length