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@yakkomajuri
Created July 5, 2020 02:58
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from browser import document, html, window
from javascript import Math
score = 0
high_score = 0
px = py = 10
gs = tc = 20
ax = ay = 15
xv = yv = 0
trail = []
tail = 5
pre_pause = [0,0]
paused = False
def game():
global px, py, tc, gs, ax, ay, trail, tail, score
px += xv
py += yv
if px < 0:
px = tc-1
if px > tc-1:
px = 0
if py < 0:
py = tc-1
if py > tc-1:
py = 0
ctx.fillStyle = "black"
ctx.fillRect(0, 0, canvas.width, canvas.height)
ctx.fillStyle = "lime"
for i in range(len(trail)):
ctx.fillRect(trail[i][0]*gs, trail[i][1]*gs, gs-2, gs-2)
if trail[i][0] == px and trail[i][1] == py:
score = score if paused else 0
tail = 5
trail.insert(0, [px, py])
while len(trail) > tail:
trail.pop()
if ax == px and ay == py:
tail += 1
ax = Math.floor(Math.random()*tc)
ay = Math.floor(Math.random()*tc)
score += 1
update_score(score)
ctx.fillStyle = "red"
ctx.fillRect(ax*gs, ay*gs, gs-2, gs-2)
def update_score(new_score):
global high_score
document["score"].innerHTML = "Score: " + str(new_score)
if new_score > high_score:
document["high-score"].innerHTML = "High Score: " + str(new_score)
high_score = new_score
def key_push(evt):
global xv, yv, pre_pause, paused
key = evt.keyCode
if key == 37 and not paused:
xv = -1
yv = 0
elif key == 38 and not paused:
xv = 0
yv = -1
elif key == 39 and not paused:
xv = 1
yv = 0
elif key == 40 and not paused:
xv = 0
yv = 1
elif key == 32:
temp = [xv, yv]
xv = pre_pause[0]
yv = pre_pause[1]
pre_pause = [*temp]
paused = not paused
def show_instructions(evt):
window.alert("Use the arrow keys to move and press spacebar to pause the game.")
canvas = document["game-board"]
ctx = canvas.getContext("2d")
document.addEventListener("keydown", key_push)
game_loop = window.setInterval(game, 1000/15)
instructions_btn = document["instructions-btn"]
instructions_btn.addEventListener("click", show_instructions)
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