moving sprite on a hex grid

pbivens67 · 2022-07-16T21:23:56

I have drawn a hex grid and a sprite. What I want to do is move the sprite from hex to hex I have googled this problem but have found no answers. void drawHex() { const float hexagon_r = 10.0; const float hexagon_dx = hexagon_r * cos(30.0*PI / 180.0); const float hexagon_dy = hexagon_r * sin(30.0*PI / 180.0); const float hexagon_gx = 2.0*hexagon_dx; const float hexagon_gy = 2.0*hexagon_dx*sin(60.0*PI / 180.0); float x = 1.0f, y = 1.0f, z = 0.0f; int ni = 22, nj = 22; int i, j; float x0; x -= float(ni - 1)*hexagon_gx*0.5; // just shift x,y to start position (i=0,j=0) x -= float(nj - 1)*hexagon_dx*0.5; y -= float(nj - 1)*hexagon_gy*0.5; for (x0 = x, j = 0; j < nj; j++, x0 += hexagon_dx, x = x0, y += hexagon_gy) { for (i = 0; i < ni; i++, x += hexagon_gx) { glBegin(GL_LINE_LOOP); glVertex3f(x - hexagon_dx, y - hexagon_dy, z); glVertex3f(x - hexagon_dx, y + hexagon_dy, z); glVertex3f(x, y + hexagon_r, z); glVertex3f(x + hexagon_dx, y + hexagon_dy, z); glVertex3f(x + hexagon_dx, y - hexagon_dy, z); glVertex3f(x, y - hexagon_r, z); glEnd(); } } } void drawTankNorthWest() { glEnable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, texture[0]); glBegin(GL_QUADS); glTexCoord2f(0.0f, 0.0f); glVertex2f(0.0f + move_x, -5.0f + move_y); glTexCoord2f(1.0f, 0.0f); glVertex2f(5.0f + move_x, 0.0f + move_y); glTexCoord2f(1.0f, 1.0f); glVertex2f(0.0f + move_x, 5.0f + move_y); glTexCoord2f(0.0f, 1.0f); glVertex2f(-5.0f + move_x, 0.0f + move_y); glEnd(); glDisable(GL_TEXTURE_2D); }