xspeed = -walk_speed;
}
}
if (Key.isDown(Key.RIGHT)) {
if (jump_walk or can_jump) {
xspeed = walk_speed;
}
}
if (Key.isDown(Key.SPACE) and can_jump) {
yspeed -= jump_power;
can_jump = false;
}
yspeed += gravity;
if (yspeed>max_yspeed) {
yspeed = max_yspeed;
}
while (_root.lev.hitTest(this._x, this._y+this._height/2-1+yspeed, true)) {
yspeed--;
can_jump = true;
}
while (_root.lev.hitTest(this._x-this._width/2+1+xspeed, this._y, true)) {
xspeed++;
}
while (_root.lev.hitTest(this._x+this._width/2-1+xspeed, this._y, true)) {
xspeed--;
}
while (_root.lev.hitTest(this._x, this._y-this._height/2+1+yspeed, true)) {
yspeed++;
}
this._y += yspeed;
this._x += xspeed;
if (jump_walk or can_jump) {
xspeed = 0;
}
};
最终效果（按左右方向键和空格键试试）
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