我正在使用 c++、OpenGL、SOIL 图形库和 Microsoft Visual c++ 2010 Express。我添加了一个视频来演示这个问题
http://www.youtube.com/watch?v=7F7YDN0zbc4&feature=youtu.be
这是我目前的问题；
我们的舞台或环境是 3D[x][y][z]。当我们在 x 方向移动并且在 y 方向移动时不会出现问题（我们不允许在 y 方向移动步数，我们可以跳跃）。但是一旦我们到达 z=70，相机就会转过来。因此，如果在 x 和 y 为 1 时向 z=70 移动，让我们考虑我们在 z 方向上的朝向 +，但是一旦我们达到 70，我们的相机会转身，但我们的朝向仍然是 +。我知道这一点，因为我有一个 cout << 告诉我方向和坐标系位置。
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
我不确定我需要在这里输入什么样的代码，所以我应该在这里输入什么样的函数。
//这是我们的起始位置
void demo(){
gameState = 1;
player.setPos(4,1,15);
player.setFacing(3);
setPos();
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing();
}
//这就是我们设置位置的方式
void setPos(){
currentXPos = player.getXPos()+(player.getXWidth()/2);
currentYPos = player.getYPos()+(player.getYHeight());
currentZPos = player.getZPos()+(player.getZDepth()/2);
currentYFace = currentYPos;
if(player.getFacing() == 0){
currentXFace = MAPWIDTH;
currentZFace = currentZPos;
}else if(player.getFacing() == 2){
currentXFace = 0;
currentZFace = currentZPos;
}else if(player.getFacing() == 3){
currentXFace = currentXPos;
currentZFace = MAPDEPTH;
}else{
currentXFace = currentXPos;
currentZFace = 0;
}
}
//这是我们的显示函数
void /*GraphicsEngine::*/display(){
glClearColor (0.0, 0.0, 0.0, 1.0);
glLoadIdentity ();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glShadeModel(GL_FLAT);
glClearDepth(1.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
setPos();
gluLookAt(currentXPos,currentYPos,currentZPos,currentXFace,currentYFace,currentZFace,0,1,0);
generateMap();
graphicsFloor();
int i = 0;
if(projectiles.size()>0){
for(i= 0; i< projectiles.size(); i++){
arrow(projectiles.operator[](i).getXPos(),projectiles.operator[](i).getYPos(),projectiles.operator[](i).getZPos(),0.5,BLOCKWIDTH);
}
projectileMotion();
player.advance();
glutPostRedisplay();
}else if(player.advance()){
glutPostRedisplay();
}
glFlush();
glutSwapBuffers();
}
//这是我们的重塑功能
void reshape(int w, int h){
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0, (GLfloat) w/(GLfloat) h, 1.0, 200.0);
glMatrixMode(GL_MODELVIEW);
glTranslatef(0.0, 0.0, -3.6);
glLoadIdentity();
}
//这是我们控制用户使用键盘的方式，我不会发布所有其他情况，因为它们是空白的
void userAction(unsigned int userInput){
int i;
switch(userInput){
case 1:
player.turnLeft();
glutPostRedisplay();
break;
case 2:
player.turnRight();
//apply graphics
glutPostRedisplay();
break;
case 3:
if(player.getFacing() == 0){
player.setPos(player.getXPos()-1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else if(player.getFacing() ==3){
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()-1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else if(player.getFacing() == 2){
player.setPos(player.getXPos()+1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else{
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()+1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}
//apply graphics
glutPostRedisplay();
break;
case 4:
if(player.getFacing() == 0){
player.setPos(player.getXPos()+1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else if(player.getFacing() ==3){
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()+1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else if(player.getFacing() == 2){
player.setPos(player.getXPos()-1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else{
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()-1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}
//apply graphics
glutPostRedisplay();
break;
case 5:
if(player.getFacing() == 0){
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()-1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else if(player.getFacing() == 2){
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()+1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else if(player.getFacing() == 3){
player.setPos(player.getXPos()+1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else{
player.setPos(player.getXPos()-1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}
glutPostRedisplay();
break;
case 6:
if(player.getFacing() == 0){
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()+1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else if(player.getFacing() == 2){
player.setPos(player.getXPos(),player.getYPos(),player.getZPos()-1);
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " <<player.getFacing() << "\n";
}else if(player.getFacing() == 1){
player.setPos(player.getXPos()+1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}else{
player.setPos(player.getXPos()-1,player.getYPos(),player.getZPos());
cout << "The player is at position: " << player.getXPos() << ", " << player.getYPos() << ", " << player.getZPos() << ", " << player.getFacing() << "\n";
}
glutPostRedisplay();
break;
}
//这就是我们设置人脸的方式
void PlayerCharacter::setFacing(unsigned short newFace){
facing = newFace % 4;
}
//这是位置
bool PlayerCharacter::setPos(int x, int y, int z){
positionData pTemp;
pTemp.x = x;
pTemp.y = y;
pTemp.z = z;
pTemp.id = p.id;
pTemp.w = p.w;
pTemp.h = p.h;
pTemp.d = p.d;
pTemp.type = p.type;
if(/*phys->*/openBlocks(pTemp) && /*phys->*/validPosition(pTemp)==0){
p.x=x;
p.y=y;
p.z=z;
/*phys->*/updatePlacements(p);
return true;
}else{
return false;
}
}