[英]LWJGL How to move using x, y, z
您好，我在使用lwjgl添加到攝像機坐標時遇到麻煩。 我認為這與gluPerspective有關，我將發布代碼，但是您能否也告訴我如何在鼠標的定向中實現移動。 像Minecraft一樣在屏幕中間放一個十字線。 請告訴我如何在我的主代碼中實現MouseUpdates代碼。
這是我的代碼：
import java.nio.FloatBuffer;
import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLException;
import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL15;
import org.lwjgl.util.glu.GLU;
public class BasicRenderer {
private boolean isWireMesh = true;
private boolean moveUp = false;
private boolean moveDown = false;
private boolean moveRight = false;
private boolean moveLeft = false;
private boolean moveSpace = false;
private boolean moveShift = false;
private boolean movementFlag = false;
private int VBOVertexHandle;
private int VBOColorHandle;
private float PX = 0;
private float PY = 0;
private float PZ = 0;
Block Block = new Block();
Chunk Chunk = new Chunk();
mouseUpdates mouse = new mouseUpdates();
public static void main(String[] args) throws LWJGLException
{
BasicRenderer r = new BasicRenderer();
r.Start();
}
public void Start(){
try{
createWindow();
InitGL();
Run();
}catch(Exception e) {
e.printStackTrace();
}
}
DisplayMode displayMode;
private void createWindow() throws Exception {
Display.setFullscreen(false);
DisplayMode d[] = Display.getAvailableDisplayModes();
for (int i = 0; i < d.length; i++) {
if (d[i].getWidth() == 640
&& d[i].getHeight() == 480
&& d[i].getBitsPerPixel() == 32) {
displayMode = d[i];
break;
}
}
Display.setDisplayMode(displayMode);
Display.setTitle("BluePrint Maker");
Display.create();
}
private void InitGL() {
GL11.glEnable(GL11.GL_TEXTURE_2D);
GL11.glShadeModel(GL11.GL_SMOOTH);
GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
GL11.glClearDepth(1.0);
GL11.glEnable(GL11.GL_DEPTH_TEST);
GL11.glDepthFunc(GL11.GL_LEQUAL);
GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();
GLU.gluPerspective(45.0f, (float) displayMode.getWidth()
/ (float) displayMode.getHeight(), 0.1f, 100.0f);
GL11.glMatrixMode(GL11.GL_MODELVIEW);
GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST);
}
private void Run(){
float rotateYaw = 1;
while(!Display.isCloseRequested()){
try{
Render();
Display.update();
Display.sync(60);
ProcessInput();
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT
| GL11.GL_DEPTH_BUFFER_BIT);
GL11.glLoadIdentity();
GL11.glTranslatef(-30f + PX, -40f + PY, -160f+PZ);
GL11.glRotatef(45f, 0.4f, 1.0f, 0.1f);
GL11.glRotatef(45f, 0f, 1.0f, 0f);
rotateYaw += 1;
GL11.glRotatef(rotateYaw, 1f, 1.0f, 1f);
DrawVBO();
CreateVBO();
}catch(Exception e){
}
}
Display.destroy();
}
private void ProcessInput(){
Keyboard.enableRepeatEvents(true);
while(Keyboard.next()){
//If key escape is down we shut the application down
if(Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)){
System.exit(0);
}
//If key up was pressed move up
else if(Keyboard.getEventKey() == Keyboard.KEY_UP) {
if(Keyboard.getEventKeyState()){
if(Keyboard.isRepeatEvent())
{
System.out.println("KEY DOWN!");
moveUp = true;
movementFlag = true;
}
}
else{
System.out.println("KEY RELEASED!");
moveUp = false;
movementFlag = false;
}
}
//If key down was pressed move down
else if(Keyboard.getEventKey() == Keyboard.KEY_DOWN) {
if(Keyboard.getEventKeyState()){
if(Keyboard.isRepeatEvent())
{
System.out.println("KEY DOWN!");
moveDown = true;
movementFlag = true;
}
}
else{
System.out.println("KEY RELEASED!");
moveDown = false;
movementFlag = false;
}
}
else if(Keyboard.getEventKey() == Keyboard.KEY_RIGHT){
if(Keyboard.getEventKeyState()){
if(Keyboard.isRepeatEvent())
{
System.out.println("KEY DOWN!");
moveRight = true;
movementFlag = true;
}
}
else{
System.out.println("KEY RELEASED!");
moveRight = false;
movementFlag = false;
}
}
else if(Keyboard.getEventKey() == Keyboard.KEY_LEFT)
if(Keyboard.getEventKeyState()){
if(Keyboard.isRepeatEvent())
{
System.out.println("KEY DOWN!");
moveLeft = true;
movementFlag = true;
}
}
else{
System.out.println("KEY RELEASED!");
moveLeft = false;
movementFlag = false;
}
}
if(Keyboard.getEventKey() == Keyboard.KEY_SPACE) {
if(Keyboard.getEventKeyState()){
if(Keyboard.isRepeatEvent())
{
System.out.println("KEY DOWN!");
moveSpace = true;
movementFlag = true;
}
}
else{
System.out.println("KEY RELEASED!");
moveSpace = false;
movementFlag = false;
}
}
else if(Keyboard.getEventKey() == Keyboard.KEY_LSHIFT) {
if(Keyboard.getEventKeyState()){
if(Keyboard.isRepeatEvent())
{
System.out.println("KEY DOWN!");
moveShift = true;
movementFlag = true;
}
}
else{
System.out.println("KEY RELEASED!");
moveShift = false;
movementFlag = false;
}
}
if(movementFlag == true && moveUp == true){
PZ = PZ + 5;
}
if(movementFlag == true && moveDown == true){
PZ = PZ - 5;
}
if(movementFlag == true && moveRight == true){
PX = PX + 5;
}
if(movementFlag == true && moveLeft == true){
PX = PX - 5;
}
if(movementFlag == true && moveSpace == true){
PY = PY + 5;
}
if(movementFlag == true && moveShift == true){
PY = PY - 5;
}
}
private void DrawVBO() {
GL11.glPushMatrix();
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, VBOVertexHandle);
GL11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0L);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, VBOColorHandle);
GL11.glColorPointer(3, GL11.GL_FLOAT, 0, 0L);
GL11.glDrawArrays(GL11.GL_QUADS, 0, 24);
GL11.glPopMatrix();
}
private void CreateVBO() {
VBOColorHandle = GL15.glGenBuffers();
VBOVertexHandle = GL15.glGenBuffers();
FloatBuffer VertexPositionData = BufferUtils.createFloatBuffer(24 * 3);
VertexPositionData.put(new float[] {
1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, 1.0f, -1.0f,
1.0f, 1.0f, 1.0f,
1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f
});
VertexPositionData.flip();
FloatBuffer VertexColorData = BufferUtils.createFloatBuffer(24 * 3);
VertexColorData.put(new float[] { 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1,1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1,1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1,1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1,1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1,1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, });
VertexColorData.flip();
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, VBOVertexHandle);
GL15.glBufferData(GL15.GL_ARRAY_BUFFER, VertexPositionData,
GL15.GL_STATIC_DRAW);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, VBOColorHandle);
GL15.glBufferData(GL15.GL_ARRAY_BUFFER, VertexColorData,
GL15.GL_STATIC_DRAW);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
}
private void Render(){
CreateVBO();
DrawVBO();
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
GL11.glLoadIdentity();
GL11.glTranslatef(-3f, 0.0f, -20f);
GL11.glRotatef(45f, 0.4f, 1.0f, 0.1f);
GL11.glColor3f(255.0f, 255.0f, 255.0f);
Block.blockType = "Default";
for(int x = 0; x<3;x++){
for(int y = 0; y<3;y++){
for(int z = 0; z<3;z++){
RenderCube();
GL11.glTranslatef(0f, 0.0f, 2f);
}
GL11.glTranslatef(0f, 2f, -6f);
}
GL11.glTranslatef(2f, -6f, 0);
}
}
private void SetWireMesh(){
GL11.glBegin(GL11.GL_LINE_LOOP);
}
private void SetHole(){
GL11.glBegin(GL11.GL_QUADS );
}
public void RenderCube() {
if(isWireMesh == true){
SetWireMesh();
}
else{
SetHole();
}
if(Block.blockType == "Default"){
GL11.glColor3f(255.0f, 255.0f, 255.0f);
GL11.glVertex3f(1.0f, 1.0f, -1.0f);
GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(1.0f, 1.0f, 1.0f);
GL11.glColor3f(255.0f, 255.5f, 255.0f);
GL11.glVertex3f(1.0f, -1.0f, 1.0f);
GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
GL11.glVertex3f(1.0f, -1.0f, -1.0f);
GL11.glColor3f(255.0f, 255.0f, 255.0f);
GL11.glVertex3f(1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
GL11.glVertex3f(1.0f, -1.0f, 1.0f);
GL11.glColor3f(255.0f, 255.0f, 255.0f);
GL11.glVertex3f(1.0f, -1.0f, -1.0f);
GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
GL11.glVertex3f(1.0f, 1.0f, -1.0f);
GL11.glColor3f(255.0f, 255.0f, 255.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
GL11.glColor3f(255.0f, 255.0f, 255.0f);
GL11.glVertex3f(1.0f, 1.0f, -1.0f);
GL11.glVertex3f(1.0f, 1.0f, 1.0f);
GL11.glVertex3f(1.0f, -1.0f, 1.0f);
GL11.glVertex3f(1.0f, -1.0f, -1.0f);
GL11.glEnd();
}
if(Block.blockType == "UserPlaced"){
GL11.glColor3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(1.0f, 1.0f, 1.0f);
GL11.glColor3f(1.0f, 0.5f, 0.0f);
GL11.glVertex3f(1.0f, -1.0f, 1.0f);
GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
GL11.glVertex3f(1.0f, -1.0f, -1.0f);
GL11.glColor3f(1.0f, 0.0f, 0.0f);
GL11.glVertex3f(1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
GL11.glVertex3f(1.0f, -1.0f, 1.0f);
GL11.glColor3f(1.0f, 1.0f, 0.0f);
GL11.glVertex3f(1.0f, -1.0f, -1.0f);
GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
GL11.glVertex3f(1.0f, 1.0f, -1.0f);
GL11.glColor3f(0.0f, 0.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, 1.0f);
GL11.glVertex3f(-1.0f, 1.0f, -1.0f);
GL11.glVertex3f(-1.0f, -1.0f, -1.0f);
GL11.glVertex3f(-1.0f, -1.0f, 1.0f);
GL11.glColor3f(1.0f, 0.0f, 1.0f);
GL11.glVertex3f(1.0f, 1.0f, -1.0f);
GL11.glVertex3f(1.0f, 1.0f, 1.0f);
GL11.glVertex3f(1.0f, -1.0f, 1.0f);
GL11.glVertex3f(1.0f, -1.0f, -1.0f);
GL11.glEnd();
}
}
}
我為鼠標更新創建了一個類。 不必擔心塊和塊類。 他們供以后使用。 鼠標類別適用於十字准線，並在您按W鍵或向上箭頭時朝其方向移動。
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL15;
import org.lwjgl.util.glu.GLU;
import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLException;
public class mouseUpdates{
}
注意：我嘗試使用AWT和javax.swing制作十字准線。 兩者均未與lwjgl合作。 我從這里獲取信息的網站https://sites.google.com/site/voxelenginelwjglport/home我希望我提供了足夠的信息來幫助您。
經過一番研究，我設法發現gluPerspective是最小和最大視圖距離。 在渲染功能的第一個轉換調用中，我將設置值更改為PX，PY和PZ。
現在，渲染功能：
private void Render(){
CreateVBO();
DrawVBO();
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
GL11.glLoadIdentity();
GL11.glTranslatef(PX, PY, PZ);
GL11.glRotatef(45f, 0.4f, 1.0f, 0.1f);
GL11.glColor3f(255.0f, 255.0f, 255.0f);
Block.blockType = "Default";
for(int x = 0; x<3;x++){
for(int y = 0; y<3;y++){
for(int z = 0; z<3;z++){
RenderCube();
GL11.glTranslatef(0f, 0.0f, 2f);
}
GL11.glTranslatef(0f, 2f, -6f);
}
GL11.glTranslatef(2f, -6f, 0);
}
}
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