public void DrawSprite(float posX, float posY, Sprite sprite, OpenGL gl)
{
float[] verts = {
posX, posY,
posX + 32, posY,
posX + 32, posY + 32,
posX, posY + 32
};
float tw = sprite.spriteWidth;
float th = sprite.spriteHeight;
float tx = sprite.spriteX;
float ty = sprite.spriteY;
float[] texVerts = {
tx, ty,
tx + tw, ty,
tx + tw, ty + th,
tx, ty + th
};
gl.Color(1.0, 1.0, 1.0, 1.0); // reset gl color
tex.Bind(gl);
gl.Begin(OpenGL.GL_QUADS);
gl.TexCoord(texVerts[0], texVerts[1]); gl.Vertex(verts[0], verts[1], 0.0f); // Bottom Left Of The Texture and Quad
gl.TexCoord(texVerts[2], texVerts[3]); gl.Vertex(verts[2], verts[3], 0.0f); // Bottom Right Of The Texture and Quad
gl.TexCoord(texVerts[4], texVerts[5]); gl.Vertex(verts[4], verts[5], 0.0f); // Top Right Of The Texture and Quad
gl.TexCoord(texVerts[6], texVerts[7]); gl.Vertex(verts[6], verts[7], 0.0f); // Top Left Of The Texture and Quad
gl.End();
//this is sposed to be better but doesnt seem to work
//gl.VertexPointer(2, OpenGL.GL_FLOAT, 0, verts);
//gl.TexCoordPointer(2, OpenGL.GL_FLOAT, 0, texVerts);
//gl.DrawArrays(OpenGL.GL_TRIANGLE_STRIP,0,4);
}
public Sprite CreateSprite(float x,float y, float w, float h, int frames = -1)
{
float sx = x / texWidth;
float sy = y / texHeight;
float sw = w / texWidth;
float sh = h / texHeight;
Sprite tmpSprite = new Sprite(sx, sy, sw, sh, frames);
return tmpSprite;
}