这是个人项目，我试图用恐龙作为代理人来创建一个类似生存的模拟。
模拟的主要部分是do：while循环，内部执行：while循环为3：每个循环（不是嵌套）运行三个不同的ArrayLists。每个ArrayList都是一个对象数组，每个对象都做不同的事情。
Dinosaurs在字段中移动，可以吃其他Dinosaur个对象，Grass个对象或Water个对象。在被吃掉之后，Grass个对象和Water个对象都不会消失，但Dinosaur dinosaurs个对象如果被吃掉，则会从ArrayList for (Grass grass : grasses) {
System.out.println(grass);
}
//simulation loop
do {
for (Grass grass : grasses) {
grass.timeToGrow();
}
for (Water water : waters) {
}
for (Dinosaur dinosaur : dinosaurs) {
if(simulationLength % 3 == 0) { //dinosaurs lose 1 health and food every 3 turns
dinosaur.addFood(-1);
dinosaur.addWater(-1);
}
dinosaur.loseHealth();
dinosaur.move(dinosaurs, grasses, waters);
dinosaurs.add(dinosaur.timeToReproduce());
}
System.out.println("There are " + dinosaurs.size() + " dinosaurs left.");
simulationLength -= 1;
simulationTime += 1;
//TODO update GUI
} while (simulationLength > 0);
System.out.println("¡THE SIMULATION IS DONE!");
中删除。这是我的相关代码：
dinosaur.move() dinosaur.timeToReproduce()将每个恐龙移动到恐龙的ArrayList中。如果恐龙是一种食肉动物并登陆另一只恐龙，它会吃掉它，并且吃掉的恐龙会从名单中删除。如果恐龙应该使用食物并生成另一个Dinosaur（已添加到Dinosaur列表中），则Dinosaurs会返回public void move(ArrayList<Dinosaur> dinosaurs, ArrayList<Grass> grasses, ArrayList<Water> waters) {
Positioned food = getFoodSource(dinosaurs, grasses, waters);
try { //to find food
if(distanceTo(food) <= getSpeed()) { //can move to food in one turn
moveInRange(dinosaurs, grasses, waters);
} else { //food is out of reach
moveOutRange(dinosaurs, grasses, waters);
}
} catch (NullPointerException e) { //didn't find any food :(
//TODO make the dino search for alternate food source
//TODO make the dino wander if truly no food
//not yet moving
setxLoc(getxLoc());
setyLoc(getyLoc());
}
}
public void moveInRange(ArrayList<Dinosaur> dinosaurs, ArrayList<Grass> grasses, ArrayList<Water> waters) {
Positioned food = getFoodSource(dinosaurs, grasses, waters); //searching out target...
int xLocFood = food.getxLoc();
int yLocFood = food.getyLoc();
this.setxLoc(xLocFood);
this.setyLoc(yLocFood);
switch (food.getName()) {
case "grass":
//grass just got eaten. it now has to regrow
System.out.println(this + " just ate " + food + "!");
grasses.get(grasses.indexOf(food)).setGrowthStage(1);
this.addHealth(4);
this.addFood(4);
break;
case "water":
//you gots to do nothing. water doesn't go away
System.out.println(this + " just drank " + food + "!");
this.addHealth(2);
this.addWater(4);
break;
case "dinosaur":
//remove the dinosaur you just ate
System.out.println(this + " just tried to eat " + food + "!");
battle(dinosaurs.get(dinosaurs.indexOf(food)), dinosaurs);
break;
}
}
public void moveOutRange(ArrayList<Dinosaur> dinosaurs, ArrayList<Grass> grasses, ArrayList<Water> waters) {
Positioned food = getFoodSource(dinosaurs, grasses, waters); //searching out target...
//if there is not a valid food source found then the next 2 lines will throw a NullPointerException
int xLocFood = food.getxLoc();
int yLocFood = food.getyLoc();
int newXLoc;
int newYLoc;
double dx = xLocFood - getxLoc(); //total x distance to food
double dy = yLocFood - getyLoc(); //total y distance to food
double theta = Math.atan(dy / dx); //θ = arctan(dy/dx)
//rounding for accuracy
newXLoc = (int) Math.round(getSpeed() * Math.cos(theta)); //x=speed*cos(θ)
newYLoc = (int) Math.round(getSpeed() * Math.sin(theta)); //y=speed*sin(θ)
setxLoc(getxLoc() + newXLoc); //newX = x+moveX
setyLoc(getyLoc() + newYLoc); //newY = y+moveY
}
public void battle(Dinosaur dino, ArrayList<Dinosaur> dinosaurs) {
//attack vs defense
int dH = this.getAttack() - dino.getDefense();
if(dH > 0) { //dinosaur's attack is greater than the other guy's defense
System.out.println("\t" + dino + " just lost " + dH + " health!");
dino.addHealth(-dH);
this.addFood(dino.curFood / 2);
if(dino.getHealth() <= 0) {
System.out.println("\t" + dino + " was just eaten!");
for (int i = 0; i < dinosaurs.size(); i++) {
if(dinosaurs.get(i).equals(dino)) {
dinosaurs.remove(i);
}
}
}
} else if(dH < 0) { //defender has the big defense
System.out.println("\t" + this + " just lost " + dH + " health!");
this.addHealth(dH);
badDinos.add(dino);
}
}
个对象，如果不是，则返回null。
Iterator我见过ArrayList的一些内容，我应该使用什么？如果是这样，他们如何运作？我应该在move() / battle()和timeToReproduce()中创建新的dinosaurs，然后在完成df61.head(3)
mpe_wgt pic_code
10 420336479305589843900801597032
10 420907139300189843900792911982
10 420967449300189843900797682603
mpe_wgt object
pic_code object
df_petsy_gz.head(3)
monthly_fiscal_year month pic_code class_of_mail
2017 11 420606019300189843900566128707 FC
2017 11 420731629300189843900584700299 FC
2017 11 420405029300189843900568579224 FC
weight calc_postage calc_total_postage MikeZone
0.8750 4.02 4.02 5
0.3750 2.77 2.77 6
0.6875 3.60 3.60 8
monthly_fiscal_year int64
month int64
pic_code object
class_of_mail object
weight float64
calc_postage float64
calc_total_postage float64
MikeZone int64
df61_mpe=pd.merge(df_petsy_gz,df61,on='pic_code', how='outer')
循环后删除内容吗？如果是这样，我如何确保应该被吃掉的恐龙呢？
随着人们的要求，我会不断更新细节。