void Board::random_tile() {
int col = rand() % 4;
int row = rand() % 4;
if (grid[col][row] == 0) {
grid[col][row] = generate_tile();
} else {
random_tile();
}
}
struct fv_map_painter *
fv_map_painter_new(struct fv_image_data *image_data,
struct fv_shader_data *shader_data)
{
struct fv_map_painter *painter;
struct tile_data data;
struct fv_map_painter_tile *tile;
int first, tx, ty;
int tex_width, tex_height;
GLuint tex_uniform;
painter = fv_alloc(sizeof *painter);
if (fv_gl.have_instanced_arrays) {
fv_gl.glGenBuffers(1, &painter->instance_buffer);
fv_gl.glBindBuffer(GL_ARRAY_BUFFER, painter->instance_buffer);
fv_gl.glBufferData(GL_ARRAY_BUFFER,
sizeof (struct instance) *
FV_MAP_PAINTER_MAX_SPECIALS,
NULL, /* data */
GL_DYNAMIC_DRAW);
}
init_programs(painter, shader_data);
if (!load_models(painter, image_data))
goto error_instance_buffer;
fv_image_data_get_size(image_data,
FV_IMAGE_DATA_MAP_TEXTURE,
&tex_width, &tex_height);
if (!fv_gl.have_npot_mipmaps) {
painter->texture_width = smallest_pot(tex_width);
painter->texture_height = smallest_pot(tex_height);
} else {
painter->texture_width = tex_width;
painter->texture_height = tex_height;
}
fv_gl.glGenTextures(1, &painter->texture);
fv_gl.glBindTexture(GL_TEXTURE_2D, painter->texture);
fv_gl.glTexImage2D(GL_TEXTURE_2D,
0, /* level */
GL_RGB,
painter->texture_width, painter->texture_height,
0, /* border */
GL_RGB,
GL_UNSIGNED_BYTE,
NULL);
fv_image_data_set_sub_2d(image_data,
GL_TEXTURE_2D,
0, /* level */
0, 0, /* x/y offset */
FV_IMAGE_DATA_MAP_TEXTURE);
fv_gl.glGenerateMipmap(GL_TEXTURE_2D);
fv_gl.glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_NEAREST);
fv_gl.glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER,
GL_LINEAR);
fv_gl.glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
fv_gl.glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
tex_uniform = fv_gl.glGetUniformLocation(painter->map_program.id,
"tex");
fv_gl.glUseProgram(painter->map_program.id);
fv_gl.glUniform1i(tex_uniform, 0);
tex_uniform = fv_gl.glGetUniformLocation(painter->texture_program.id,
"tex");
fv_gl.glUseProgram(painter->texture_program.id);
fv_gl.glUniform1i(tex_uniform, 0);
fv_buffer_init(&data.vertices);
fv_buffer_init(&data.indices);
tile = painter->tiles;
for (ty = 0; ty < FV_MAP_TILES_Y; ty++) {
for (tx = 0; tx < FV_MAP_TILES_X; tx++) {
first = data.indices.length / sizeof (uint16_t);
tile->min = (data.vertices.length /
sizeof (struct vertex));
tile->offset = data.indices.length;
generate_tile(painter, &data, tx, ty);
tile->max = (data.vertices.length /
sizeof (struct vertex)) - 1;
tile->count = (data.indices.length /
sizeof (uint16_t) -
first);
tile++;
}
}
assert(data.vertices.length / sizeof (struct vertex) < 65536);
painter->array = fv_array_object_new();
fv_gl.glGenBuffers(1, &painter->vertices_buffer);
fv_gl.glBindBuffer(GL_ARRAY_BUFFER, painter->vertices_buffer);
fv_gl.glBufferData(GL_ARRAY_BUFFER,
data.vertices.length,
data.vertices.data,
GL_STATIC_DRAW);
fv_array_object_set_attribute(painter->array,
FV_SHADER_DATA_ATTRIB_POSITION,
4, /* size */
GL_UNSIGNED_BYTE,
GL_FALSE, /* normalized */
sizeof (struct vertex),
0, /* divisor */
painter->vertices_buffer,
offsetof(struct vertex, x));
fv_array_object_set_attribute(painter->array,
FV_SHADER_DATA_ATTRIB_TEX_COORD,
2, /* size */
GL_UNSIGNED_SHORT,
GL_TRUE, /* normalized */
sizeof (struct vertex),
0, /* divisor */
painter->vertices_buffer,
offsetof(struct vertex, s));
fv_gl.glGenBuffers(1, &painter->indices_buffer);
fv_array_object_set_element_buffer(painter->array,
painter->indices_buffer);
fv_gl.glBufferData(GL_ELEMENT_ARRAY_BUFFER,
data.indices.length,
data.indices.data,
GL_STATIC_DRAW);
fv_buffer_destroy(&data.indices);
fv_buffer_destroy(&data.vertices);
return painter;
error_instance_buffer:
if (fv_gl.have_instanced_arrays)
fv_gl.glDeleteBuffers(1, &painter->instance_buffer);
fv_free(painter);
return NULL;
}
