from math import sin
from kandinsky import fill_rect

# -------- ECRAN --------
W, H = 64, 44   # 1 pixel = 1 cellule

Cols = [
(40,40,195),   # eau profonde
(50,50,255),   # eau
(220,220,165), # sable
(80,215,80),   # herbe
(60,180,60),   # forêt
(140,140,140), # montagne
(240,240,240)  # neige
]

# -------- HASH SEED --------
def hash32(n):
    n = (n ^ 61) ^ (n >> 16)
    n = n + (n << 3)
    n = n ^ (n >> 4)
    n = n * 0x27d4eb2d
    n = n ^ (n >> 15)
    return n & 255

# -------- PARAMETRES SINUS --------
def make_params(seed):
    params = []

    for i in range(10):  # plus de détails
        s1 = hash32(seed + i * 11)
        s2 = hash32(seed + i * 23)
        s3 = hash32(seed + i * 37)

        A = 8 + (s1 % 60)
        k = 0.01 + (s2 % 25) * 0.004
        p = s3
        mode = i % 4

        params.append((A, k, p, mode))

    return params

# -------- HAUTEUR --------
def height(x, y, params):
    v = 128

    for A, k, p, m in params:

        if m == 0:
            v += A * sin(k*x + p)
        elif m == 1:
            v += A * sin(k*y - p)
        elif m == 2:
            v += A * sin(k*(x+y) + p)
        else:
            v += A * sin(k*(x-y) - p)

    return v

# -------- BIOMES --------
def t(v):
    if v < 90: return 0
    if v < 110: return 1
    if v < 135: return 2
    if v < 165: return 3
    if v < 195: return 4
    if v < 225: return 5
    return 6

# -------- RENDU PIXEL PAR PIXEL --------
def render(seed):
    params = make_params(seed)

    for y in range(H):
        for x in range(W):

            v = height(x, y, params)
            fill_rect(x*5, y*5, 5, 5, Cols[t(v)])

# -------- EXECUTION --------
render(42)