我的问题是，当我的角色移动到地图的一侧时，它会慢慢地移动到墙上（即使但是当角色死掉时，这个停止。你能告诉我有什么改变我的代码所以这不会发生吗？
package Slick.jar;
import org.newdawn.slick.*;
import org.newdawn.slick.state.*;
public class Play extends BasicGameState{
//initializing variables
Animation bucky, movingUp, movingDown, movingLeft, movingRight;
Image worldMap;
boolean quit = false;
int[] duration = {200,200};
float buckyPositionX = 0;
float buckyPositionY = 0;
float shiftX = buckyPositionX + 320;
float shiftY = buckyPositionY + 160;
boolean notPaused = true;
boolean running = false;
float speedL = 0;
float speedR = 0;
float speedU = 0;
float speedD = 0;
boolean ableToMoveL = true;
boolean ableToMoveR = true;
boolean ableToMoveU = true;
boolean ableToMoveD = true;
int health = 1000;
boolean dead = false;
float bounceL = speedL/2;
float bounceR = speedR/2;
float bounceU = speedU/2;
float bounceD = speedD/2;
public Play(int state){
}
public void init(GameContainer gc, StateBasedGame sbg)throws SlickException{
//initializing images
worldMap = new Image("res/world.png");
Image[] walkUp = {new Image("res/buckysBack.png"), new Image("res/buckysBack.png")};
Image[] walkDown = {new Image("res/buckysFront.png"), new Image("res/buckysFront.png")};
Image[] walkLeft = {new Image("res/buckysLeft.png"), new Image("res/buckysLeft.png")};
Image[] walkRight = {new Image("res/buckysRight.png"), new Image("res/buckysRight.png")};
//creating animations
movingUp = new Animation(walkUp, duration, false);
movingDown = new Animation (walkDown, duration, false);
movingLeft = new Animation (walkLeft, duration, false);
movingRight = new Animation (walkRight, duration, false);
bucky = movingDown;
}
public void render(GameContainer gc, StateBasedGame sbg, Graphics g)throws SlickException{
//drawing images onto canvas
worldMap.draw(buckyPositionX, buckyPositionY);
bucky.draw(shiftX, shiftY);
g.drawString("Buckys X: "+buckyPositionX+"\n Y: "+buckyPositionY, 400, 200);
g.drawString("Health: " + health, 400, 250);
g.drawString("speedL: " + speedL , 10, 50);
g.drawString("speedR: " + speedR , 10, 75);
g.drawString("speedU: " + speedU , 10, 100);
g.drawString("speedD: " + speedD , 10, 125);
//seeing if player wants to quit
if(quit==true){
g.drawString("Resume (R)", 250, 100);
g.drawString("Main Menu (M)", 250, 150);
g.drawString("Quit Game (Q)", 250, 200);
if(quit==false){
g.clear();
}
}
if(health == 0)
dead = true;
if(dead){
g.drawString("You are dead", 250, 100);
ableToMoveR = false;
ableToMoveL = false;
ableToMoveU = false;
ableToMoveD = false;
speedU = 0;
speedD = 0;
speedL = 0;
speedR = 0;
g.drawString("Press (R) to respawn", 250, 125);
if(!dead)
g.clear();
}
}
public void update(GameContainer gc, StateBasedGame sbg, int delta)throws SlickException{
Input input = gc.getInput();
float bounceL = speedL/2;
float bounceR = speedR/2;
float bounceU = speedU/2;
float bounceD = speedD/2;
if(health == 0){
ableToMoveR = false;
ableToMoveL = false;
ableToMoveU = false;
ableToMoveD = false;
dead = true;
}
//creating velocity movement
if(ableToMoveR){
buckyPositionX += speedR;
if(!ableToMoveR)
speedR = 0.1f;
}
if(ableToMoveL){
buckyPositionX += speedL;
if(!ableToMoveL)
speedL = 0.1f;
}
if(ableToMoveU){
buckyPositionY += speedU;
if(!ableToMoveU)
speedU = 0.1f;
}
if(ableToMoveD){
buckyPositionY += speedD;
if(!ableToMoveD)
speedD = 0.1f;
}
//creating "slow-down" system
if(!input.isKeyDown(input.KEY_W)){
if(speedU >= 0)
speedU -= .01f;
if(speedU > 0 && speedU < .01f)
speedU = 0;
}
if(!input.isKeyDown(input.KEY_S)){
if(speedD <= 0)
speedD += .01f;
if(speedD > 0 && speedD < .01f)
speedD = 0;
}
if(!input.isKeyDown(input.KEY_A)){
if(speedL >= 0)
speedL -= .01f;
if(speedL > 0 && speedL < .01f)
speedL = 0;
}
if(!input.isKeyDown(input.KEY_D)){
if(speedR <= 0)
speedR += .01f;
if(speedR < 0 && speedR > -.01f)
speedR = 0;
}
//creating crash detection
if(buckyPositionX<-840){
speedR = 0.01f;
if(health > 0)
health--;
ableToMoveR = false;
} else
ableToMoveR = true;
if(buckyPositionY<-600){
speedD = 0.01f;
if(health > 0)
health--;
ableToMoveD = false;
} else
ableToMoveD = true;
if(buckyPositionY>162){
speedU = -0.01f;
if(health > 0)
health--;
ableToMoveU = false;
} else
ableToMoveU = true;
if(buckyPositionX>320){
speedL = -0.01f;
if(health > 0)
health--;
ableToMoveL = false;
} else
ableToMoveL = true;
//seeing if player wants to run
if(input.isKeyDown(input.KEY_LSHIFT))
running = true;
else
running = false;
//seeing if paused
if(notPaused == true){
if(ableToMoveU){
//letting you move/run up
if(input.isKeyDown(input.KEY_W)&&running==false ){
bucky = movingUp;
if(speedU < 5)
speedU += .005f;
}
if(input.isKeyDown(input.KEY_W)&&running==true ){
bucky = movingUp;
if(speedU < 5)
speedU += .01f;
}
}
//letting you move/run down
if(ableToMoveD){
if(input.isKeyDown(input.KEY_S)&&running==false){
bucky = movingDown;
if(speedD > -5)
speedD -= .005f;
}
if(input.isKeyDown(input.KEY_S)&&running==true){
bucky = movingDown;
if(speedD > -5)
speedD -= .01f;
}
}
//letting you move/run left
if(ableToMoveL){
if(input.isKeyDown(input.KEY_A)&&running==false){
bucky = movingLeft;
if(speedL < 5)
speedL += .005f;
}
if(input.isKeyDown(input.KEY_A)&&running==true){
bucky = movingLeft;
if(speedL < 5)
speedL += .01f;
}
}
//letting you move/run right
if(ableToMoveR){
if(input.isKeyDown(input.KEY_D)&&running==false){
bucky = movingRight;
if(speedR > -5)
speedR -= .01f;
}
if(input.isKeyDown(input.KEY_D)&&running==true){
bucky = movingRight;
if(speedR > -5)
speedR -= .02f;
}
}
}
//escape
if(input.isKeyDown(input.KEY_ESCAPE)){
quit = true;
notPaused = false;
}
if(dead){
if(input.isKeyDown(input.KEY_R)){
dead = false;
health = 1000;
buckyPositionX = 0;
buckyPositionY = 0;
}
}
//menu is up
if(quit==true){
if(input.isKeyDown(input.KEY_R)){
quit = false;
notPaused = true;
}
if(input.isKeyDown(input.KEY_M)){
sbg.enterState(0);
}
if(input.isKeyDown(input.KEY_Q)){
System.exit(0);
}
}
if(input.isKeyDown(input.KEY_X))
health = 0;
}
public int getID(){
return 1;
}
}
P.S。还有另外两个课程，但他们在这个问题上没有发挥作用，但如果你需要它们，那就问问。
P.P.S。如果您需要更多信息，请询问。
答案 0 :(得分：0)
我不确定因为缩进不完美但我认为这些行中存在问题
if(!input.isKeyDown(input.KEY_W)){
if(speedU >= 0)
speedU -= .01f;
if(speedU > 0 && speedU < .01f)
speedU = 0;
}
如果未按下键，则speedU == 0 THEN speedU - = .01f;所以最后的速度是U == - .01f。它可以解释为什么它仍然会移动。
为您提供更多建议
最后这些线路并不好，因为你测试的是与你输入if
的相反if(ableToMoveL){ // TRUE
buckyPositionX += speedL;
if(!ableToMoveL) // FALSE
speedL = 0.1f;
}