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This commit is contained in:
kennyboy55
2016-04-25 12:21:57 +02:00
parent 68da0178ec
commit 46e5f4ec57
1 changed files with 56 additions and 39 deletions
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OpenGL2/Main.cpp
+56 -39
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@@ -15,6 +15,7 @@ struct Camera
{
float posX = 0;
float posY = -4;
float posZ = 0;
float rotX = 0;
float rotY = 0;
} camera;
@@ -22,44 +23,49 @@ struct Camera
bool keys[255];
void drawCube()
void drawCube(int index)
{
int rowNum = index / 16;
int columnNum = index % 16;
float part = (float)1 / 16;
float row = rowNum * part;
float column = columnNum * part;
float rowEnd = row + part;
float columnEnd = column + part;
glBegin(GL_QUADS);
glColor3f(1, 0, 0);
glVertex3f(-1, -1, -1);
glVertex3f(1, -1, -1);
glVertex3f(1, 1, -1);
glVertex3f(-1, 1, -1);
glTexCoord2f(column, row); glVertex3f(-1, -1, -1);
glTexCoord2f(column, rowEnd); glVertex3f(1, -1, -1);
glTexCoord2f(columnEnd, rowEnd); glVertex3f(1, 1, -1);
glTexCoord2f(columnEnd, row); glVertex3f(-1, 1, -1);
glColor3f(1, 1, 0);
glVertex3f(-1, -1, 1);
glVertex3f(1, -1, 1);
glVertex3f(1, 1, 1);
glVertex3f(-1, 1, 1);
glTexCoord2f(column, row); glVertex3f(-1, -1, 1);
glTexCoord2f(column, rowEnd); glVertex3f(1, -1, 1);
glTexCoord2f(columnEnd, rowEnd); glVertex3f(1, 1, 1);
glTexCoord2f(columnEnd, row); glVertex3f(-1, 1, 1);
glColor3f(0, 0, 1);
glVertex3f(-1, -1, -1);
glVertex3f(-1, 1, -1);
glVertex3f(-1, 1, 1);
glVertex3f(-1, -1, 1);
glTexCoord2f(column, row); glVertex3f(-1, -1, -1);
glTexCoord2f(column, rowEnd); glVertex3f(-1, 1, -1);
glTexCoord2f(columnEnd, rowEnd); glVertex3f(-1, 1, 1);
glTexCoord2f(columnEnd, row); glVertex3f(-1, -1, 1);
glColor3f(1, -1, 1);
glVertex3f(1, -1, -1);
glVertex3f(1, 1, -1);
glVertex3f(1, 1, 1);
glVertex3f(1, -1, 1);
glTexCoord2f(column, row); glVertex3f(1, -1, -1);
glTexCoord2f(column, rowEnd); glVertex3f(1, 1, -1);
glTexCoord2f(columnEnd, rowEnd); glVertex3f(1, 1, 1);
glTexCoord2f(columnEnd, row); glVertex3f(1, -1, 1);
glColor3f(0, 1, 0);
glVertex3f(-1, -1, -1);
glVertex3f(1, -1, -1);
glVertex3f(1, -1, 1);
glVertex3f(-1, -1, 1);
glTexCoord2f(column, row); glVertex3f(-1, -1, -1);
glTexCoord2f(column, rowEnd); glVertex3f(1, -1, -1);
glTexCoord2f(columnEnd, rowEnd); glVertex3f(1, -1, 1);
glTexCoord2f(columnEnd, row); glVertex3f(-1, -1, 1);
glColor3f(1, 1, 0);
glVertex3f(-1, 1, -1);
glVertex3f(1, 1, -1);
glVertex3f(1, 1, 1);
glVertex3f(-1, 1, 1);
glTexCoord2f(column, row); glVertex3f(-1, 1, -1);
glTexCoord2f(column, rowEnd); glVertex3f(1, 1, -1);
glTexCoord2f(columnEnd, rowEnd); glVertex3f(1, 1, 1);
glTexCoord2f(columnEnd, row); glVertex3f(-1, 1, 1);
glEnd();
}
@@ -77,30 +83,32 @@ void display()
glLoadIdentity();
glRotatef(camera.rotX, 1, 0, 0);
glRotatef(camera.rotY, 0, 1, 0);
glTranslatef(camera.posX, 0, camera.posY);
glTranslatef(camera.posX, camera.posZ, camera.posY);
glEnable(GL_TEXTURE_2D);
glColor3f(1.0f, 1.0f, 1.0f);
glBindTexture(GL_TEXTURE_2D, grassTexture);
glBegin(GL_QUADS);
glTexCoord2f(0, 0); glVertex3f(-15, -1, -15);
glTexCoord2f(0, 1); glVertex3f( 15, -1, -15);
glTexCoord2f(1, 1); glVertex3f( 15, -1, 15);
glTexCoord2f(1, 0); glVertex3f(-15, -1, 15);
glTexCoord2f(0, 8); glVertex3f( 15, -1, -15);
glTexCoord2f(8, 8); glVertex3f( 15, -1, 15);
glTexCoord2f(8, 0); glVertex3f(-15, -1, 15);
glEnd();
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, blocksTexture);
for (int x = -10; x <= 10; x += 5)
{
for (int y = -10; y <= 10; y += 5)
{
glPushMatrix();
glTranslatef((float)x, 0.0f, (float)y);
drawCube();
drawCube(39);
glPopMatrix();
}
}
glDisable(GL_TEXTURE_2D);
glutSwapBuffers();
}
@@ -110,6 +118,11 @@ void move(float angle, float fac)
camera.posY += (float)sin((camera.rotY + angle) / 180 * M_PI) * fac;
}
void moveZ(float direction, float fac)
{
camera.posZ += (fac * direction);
}
void idle()
{
float frameTime = glutGet(GLUT_ELAPSED_TIME)/1000.0f;
@@ -121,6 +134,8 @@ void idle()
if (keys['d']) move(180, deltaTime*speed);
if (keys['w']) move(90, deltaTime*speed);
if (keys['s']) move(270, deltaTime*speed);
if (keys['q']) moveZ(-1, deltaTime*speed);
if (keys['e']) moveZ(1, deltaTime*speed);
glutPostRedisplay();
}
@@ -187,12 +202,13 @@ int main(int argc, char* argv[])
GL_UNSIGNED_BYTE, //data type
imgData1); //data
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
stbi_image_free(imgData1);
//Load Textures :: blocks
int width2, height2, bpp2;
unsigned char* imgData2 = stbi_load("terrain.jpg", &width2, &height2, &bpp2, 4);
unsigned char* imgData2 = stbi_load("terrain.png", &width2, &height2, &bpp2, 4);
glGenTextures(1, &blocksTexture);
glBindTexture(GL_TEXTURE_2D, blocksTexture);
@@ -206,7 +222,8 @@ int main(int argc, char* argv[])
GL_RGBA, //data format
GL_UNSIGNED_BYTE, //data type
imgData2); //data
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
stbi_image_free(imgData2);