diff --git a/main.c b/main.c index fc228f2..7ad79f6 100644 --- a/main.c +++ b/main.c @@ -101,16 +101,26 @@ int main() hexgrid_t grid; - grid.rows = 1; - grid.columns = 1; + grid.rows = 3; + grid.columns = 3; grid.hexes = calloc(1, sizeof(hex_t) * grid.rows * grid.columns); - for (size_t i = 0; i < grid.rows * grid.columns; ++i) + float scale = 1.0f / 5.0f; + + for (size_t i = 0; i < grid.rows; ++i) { - grid.hexes[i].position.x = 0.0f; - grid.hexes[i].position.y = 0.0f; - grid.hexes[i].position.z = 0.0f; - grid.hexes[i].position.w = 1.0f; + for (size_t j = 0; j < grid.columns; ++j) + { + float offset = 0.0f; + if (j % 2) + offset = sint(1.0f/6); + + grid.hexes[i*grid.columns+j].position.x = (0.0f + j*(1 + cost(1.0f/6))); + grid.hexes[i*grid.columns+j].position.y = (0.0f + i*(sint(1.0f/6))*2.0f) + offset; + grid.hexes[i*grid.columns+j].position.z = 0.0f; + grid.hexes[i*grid.columns+j].position.w = 1.0f; + fprintf(stdout, "Position of hex %ld %ld is %f %f\n", i, j, grid.hexes[i*grid.columns+j].position.x, grid.hexes[i*grid.columns+j].position.y); + } } // Get OpenGL objects @@ -119,27 +129,31 @@ int main() for (uint64_t i = 0; i < grid.columns * grid.rows; ++i) { - vertices[i*21] = grid.hexes[i].position.x; - vertices[i*21+1] = grid.hexes[i].position.y; + vertices[i*21] = grid.hexes[i].position.x * scale; + vertices[i*21+1] = grid.hexes[i].position.y * scale; vertices[i*21+2] = grid.hexes[i].position.z; for (int j = 1; j < 7; ++j) { - vertices[i*21+j*3] = grid.hexes[i].position.x + cost((j-1)/6.0f); - vertices[i*21+j*3+1] = grid.hexes[i].position.y + sint((j-1)/6.0f); + vertices[i*21+j*3] = (grid.hexes[i].position.x + cost((j-1)/6.0f)) * scale; + vertices[i*21+j*3+1] = (grid.hexes[i].position.y + sint((j-1)/6.0f)) * scale; vertices[i*21+j*3+2] = grid.hexes[i].position.z; } } - unsigned int indices[] = + size_t nindices = grid.columns * grid.rows * 3 * 6; + unsigned int *indices = calloc(nindices, sizeof(unsigned int)); + + + for (size_t i = 0; i < grid.columns*grid.rows; ++i) { - 0,1,2, - 0,2,3, - 0,3,4, - 0,4,5, - 0,5,6, - 0,6,1 - }; + indices[i*6*3] = 0 + i*7; indices[i*6*3+1] = 1 + i*7; indices[i*6*3+2] = 2 + i*7; + indices[i*6*3+3] = 0 + i*7; indices[i*6*3+4] = 2 + i*7; indices[i*6*3+5] = 3 + i*7; + indices[i*6*3+6] = 0 + i*7; indices[i*6*3+7] = 3 + i*7; indices[i*6*3+8] = 4 + i*7; + indices[i*6*3+9] = 0 + i*7; indices[i*6*3+10] = 4 + i*7; indices[i*6*3+11] = 5 + i*7; + indices[i*6*3+12] = 0 + i*7; indices[i*6*3+13] = 5 + i*7; indices[i*6*3+14] = 6 + i*7; + indices[i*6*3+15] = 0 + i*7; indices[i*6*3+16] = 6 + i*7; indices[i*6*3+17] = 1 + i*7; + } glGenVertexArrays(1, &vao); glGenBuffers(1,&vbo); @@ -150,7 +164,7 @@ int main() glBufferData(GL_ARRAY_BUFFER, 7*3*grid.rows*grid.columns*sizeof(float), vertices, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, nindices * sizeof(unsigned int), indices, GL_STATIC_DRAW); glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(float), (void*)0); glEnableVertexAttribArray(0); @@ -170,7 +184,7 @@ int main() glUseProgram(shader_program); glBindVertexArray(vao); glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); - glDrawElements(GL_TRIANGLES, 3*6, GL_UNSIGNED_INT, 0); + glDrawElements(GL_TRIANGLES, 3*6*grid.rows*grid.columns, GL_UNSIGNED_INT, 0); glfwPollEvents(); glfwSwapBuffers(window);