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drawBug(float POSx, float POSy, int bugType, int bugFrame);
Then somewhere in code you would have bugFrame variable cycling between 2 values. Or more frames later.
All the bug draw code is in drawBug. It does one thing, draw bugs. All the bugs. Anywhere.
so I should refactor the following code.
void drawBug_one(int i)
{
Bug bug;
bug.bug_x = -10.0f;
bug.bug_y = 90.0f;
bug.bugWidth = 10.0f;
bug.bugHeight = 10.0f;
bugs.push_back(bug);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture[12]);
glBegin(GL_POLYGON);
glTexCoord3f(0.0f, 0.0f, 0.0f);
glVertex3f(bugs[i].bug_x, bugs[i].bug_y, 0.0f);
glTexCoord3f(1.0f, 0.0f, 0.0f);
glVertex3f(bugs[i].bug_x, bugs[i].bug_y + bugs[i].bugHeight, 0.0f);
glTexCoord3f(1.0f, 1.0f, 0.0f);
glVertex3f(bugs[i].bug_x + bugs[i].bugWidth, bugs[i].bug_y + bugs[i].bugHeight, 0.0f);
glTexCoord3f(0.0f, 1.0f, 0.0f);
glVertex3f(bugs[i].bug_x + bugs[i].bugWidth, bugs[i].bug_y, 0.0f);
glEnd();
glDisable(GL_TEXTURE_2D);
}
void drawBug_two(int i)
{
Bug bug;
bug.bug_x = -10.0f;
bug.bug_y = 90.0f;
bug.bugWidth = 10.0f;
bug.bugHeight = 10.0f;
bugs.push_back(bug);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture[8]);
glBegin(GL_POLYGON);
glTexCoord3f(0.0f, 0.0f, 0.0f);
glVertex3f(bugs[i].bug_x, bugs[i].bug_y, 0.0f);
glTexCoord3f(1.0f, 0.0f, 0.0f);
glVertex3f(bugs[i].bug_x, bugs[i].bug_y + bugs[i].bugHeight, 0.0f);
glTexCoord3f(1.0f, 1.0f, 0.0f);
glVertex3f(bugs[i].bug_x + bugs[i].bugWidth, bugs[i].bug_y + bugs[i].bugHeight, 0.0f);
glTexCoord3f(0.0f, 1.0f, 0.0f);
glVertex3f(bugs[i].bug_x + bugs[i].bugWidth, bugs[i].bug_y, 0.0f);
glEnd();
glDisable(GL_TEXTURE_2D);
}
drawBug(1);
drawBug(2);is a thousand times better than
drawBug1();
drawBug2();Again, the dice code from the blog is mostly all you need to go by.
here is my refactored code
void drawBug(float POSx, float POSy, int bugType, int bugFrame)
{
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture[bugType]);
glBegin(GL_POLYGON);
glTexCoord3f(0.0f, 0.0f, 0.0f);
glVertex3f(POSx, POSy, 0.0f);
glTexCoord3f(1.0f, 0.0f, 0.0f);
glVertex3f(POSx + 10.0f, POSy, 0.0f);
glTexCoord3f(1.0f, 1.0f, 0.0f);
glVertex3f(POSx + 10.0f, POSy + 10.0f, 0.0f);
glTexCoord3f(0.0f, 1.0f, 0.0f);
glVertex3f(POSx, POSy + 10.0f, 0.0f);
glEnd();
glDisable(GL_TEXTURE_2D);
}
texture[bugType]If you store frame1 and frame2 consecutively, you can get frames working with
texture[bugType + bugFrame]where bugFrame would be 0 or 1.
The only issue I see is you are going to have to keep track of the bugTypes somehow. They would be something like 6, 8, 10, 12. With only a few bugs this isn't a problem, except for the so-called โmagic numbersโ.
pbivens67 said:
I already have 2 bug textures loaded in, I just want one bug to draw to the screen and then another bug to draw in the same spot, basically I want the bugs to be drawn alternately one on the top of another.
I assumed you were trying to get the animation working for Bug Invaders. No? Why else would you want to draw bugs in the same spot?
