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https://github.com/thepigeongenerator/tetris_clone.git
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176
src/io/render.c
176
src/io/render.c
@@ -21,141 +21,141 @@
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#define COLOUR_SCORE COLOUR32_YELLOW
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void render_init(renderdata* const render_dat, gamedata const* const game_dat) {
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SDL_Window* const window = SDL_CreateWindow("tetris clone", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
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if (window == NULL) fatal(ERROR_SDL_RENDERING_INIT, "Window failed to be created! SDL Error: %s", SDL_GetError());
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SDL_Window* const window = SDL_CreateWindow("tetris clone", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
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if (window == NULL) fatal(ERROR_SDL_RENDERING_INIT, "Window failed to be created! SDL Error: %s", SDL_GetError());
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SDL_Renderer* const renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED);
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if (renderer == NULL) fatal(ERROR_SDL_RENDERING_INIT, "Renderer failed to be created! SDL Error: %s", SDL_GetError());
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SDL_Renderer* const renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED);
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if (renderer == NULL) fatal(ERROR_SDL_RENDERING_INIT, "Renderer failed to be created! SDL Error: %s", SDL_GetError());
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TTF_Font* const font = TTF_OpenFont("pixeldroid_botic-regular.ttf", PX_DENS);
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if (font == NULL) error("Failed to open font! TTF Error: %s", TTF_GetError());
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TTF_Font* const font = TTF_OpenFont("pixeldroid_botic-regular.ttf", PX_DENS);
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if (font == NULL) error("Failed to open font! TTF Error: %s", TTF_GetError());
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// initialize the render data
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*render_dat = (renderdata){
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game_dat,
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window,
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renderer,
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font,
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calloc(1, sizeof(struct render_cache)), // zero-initialize the memory as we read from it
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};
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// initialize the render data
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*render_dat = (renderdata){
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game_dat,
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window,
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renderer,
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font,
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calloc(1, sizeof(struct render_cache)), // zero-initialize the memory as we read from it
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};
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}
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static inline int32_t get_column_pos(uint8_t column) {
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return column * BLOCK_WIDTH + 1 + TET_PADDING;
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return column * BLOCK_WIDTH + 1 + TET_PADDING;
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}
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static inline int32_t get_row_pos(uint8_t row) {
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return row * BLOCK_HEIGHT + 1 + TET_PADDING;
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return row * BLOCK_HEIGHT + 1 + TET_PADDING;
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}
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static void draw_score_text(renderdata const* dat) {
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struct render_cache* const cache = dat->cache;
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uint16_t const score = dat->game_dat->score;
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struct render_cache* const cache = dat->cache;
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uint16_t const score = dat->game_dat->score;
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SDL_Renderer* const renderer = dat->renderer;
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TTF_Font* const font = dat->font;
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SDL_Renderer* const renderer = dat->renderer;
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TTF_Font* const font = dat->font;
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if (cache->prevscore != score || cache->score_texture == NULL) {
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char score_text[6]; // max digits of a uint16 + \0 terminator
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if (!score) sprintf(score_text, "0");
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else sprintf(score_text, "%hu0", score);
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if (cache->prevscore != score || cache->score_texture == NULL) {
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char score_text[6]; // max digits of a uint16 + \0 terminator
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if (!score) sprintf(score_text, "0");
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else sprintf(score_text, "%hu0", score);
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SDL_Surface* const txt_surface = TTF_RenderText_Solid(font, score_text, (SDL_Colour){COLOUR_SCORE.r, COLOUR_SCORE.g, COLOUR_SCORE.b, COLOUR_SCORE.a});
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SDL_Texture* const txt_texture = SDL_CreateTextureFromSurface(renderer, txt_surface);
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SDL_Surface* const txt_surface = TTF_RenderText_Solid(font, score_text, (SDL_Colour){COLOUR_SCORE.r, COLOUR_SCORE.g, COLOUR_SCORE.b, COLOUR_SCORE.a});
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SDL_Texture* const txt_texture = SDL_CreateTextureFromSurface(renderer, txt_surface);
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if (cache->score_texture != NULL || cache->score_surface != NULL) {
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// free old data
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SDL_FreeSurface(cache->score_surface);
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SDL_DestroyTexture(cache->score_texture);
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}
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if (cache->score_texture != NULL || cache->score_surface != NULL) {
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// free old data
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SDL_FreeSurface(cache->score_surface);
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SDL_DestroyTexture(cache->score_texture);
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}
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// write data to cache
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cache->score_surface = txt_surface;
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cache->score_texture = txt_texture;
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}
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// write data to cache
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cache->score_surface = txt_surface;
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cache->score_texture = txt_texture;
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}
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if (cache->score_surface == NULL || cache->score_texture == NULL) {
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error("the score texture was unavailable!",);
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return;
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}
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if (cache->score_surface == NULL || cache->score_texture == NULL) {
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error("the score texture was unavailable!", );
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return;
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}
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SDL_Rect text_rect = {get_column_pos(COLUMNS + 1), get_row_pos(0), cache->score_surface->w, cache->score_surface->h};
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SDL_RenderCopy(renderer, cache->score_texture, NULL, &text_rect);
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SDL_Rect text_rect = {get_column_pos(COLUMNS + 1), get_row_pos(0), cache->score_surface->w, cache->score_surface->h};
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SDL_RenderCopy(renderer, cache->score_texture, NULL, &text_rect);
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}
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// draws a block at the specified position
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static inline int draw_block(SDL_Renderer* const renderer, int8_t const x, int8_t const y) {
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SDL_Rect const block = {get_column_pos(x), get_row_pos(y), BLOCK_WIDTH - 1, BLOCK_HEIGHT - 1};
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return SDL_RenderFillRect(renderer, &block);
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SDL_Rect const block = {get_column_pos(x), get_row_pos(y), BLOCK_WIDTH - 1, BLOCK_HEIGHT - 1};
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return SDL_RenderFillRect(renderer, &block);
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}
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// draws a shape at the specified position
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static void draw_shape(SDL_Renderer* const renderer, shape_id const id, int8_t const pos_x, int8_t const pos_y) {
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shape const shape = shape_from_id(id);
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set_colour8(renderer, colour_from_id(id));
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shape const shape = shape_from_id(id);
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set_colour8(renderer, colour_from_id(id));
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for (int8_t y = 0; y < SHAPE_HEIGHT; y++) {
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shape_row const shape_row = shape_get_row(shape, y);
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for (int8_t y = 0; y < SHAPE_HEIGHT; y++) {
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shape_row const shape_row = shape_get_row(shape, y);
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if (shape_row == 0)
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continue;
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if (shape_row == 0)
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continue;
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for (int8_t x = 0; x < SHAPE_WIDTH; x++)
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if (shape_is_set(shape_row, x))
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draw_block(renderer, pos_x + x, pos_y + y);
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}
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for (int8_t x = 0; x < SHAPE_WIDTH; x++)
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if (shape_is_set(shape_row, x))
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draw_block(renderer, pos_x + x, pos_y + y);
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}
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}
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// draw the block data in the level
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static void render_level(SDL_Renderer* const renderer, gamedata const* const data) {
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for (int8_t y = 0; y < ROWS; y++) {
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row_const const row = data->rows[y];
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for (int8_t y = 0; y < ROWS; y++) {
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row_const const row = data->rows[y];
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for (int8_t x = 0; x < COLUMNS; x++) {
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if (row[x] != 0) {
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set_colour8(renderer, row[x]);
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draw_block(renderer, x, y);
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}
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}
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}
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for (int8_t x = 0; x < COLUMNS; x++) {
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if (row[x] != 0) {
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set_colour8(renderer, row[x]);
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draw_block(renderer, x, y);
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}
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}
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}
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}
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void render_update(renderdata const* const dat) {
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SDL_Renderer* const renderer = dat->renderer;
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gamedata const* const game_data = dat->game_dat;
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SDL_Renderer* const renderer = dat->renderer;
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gamedata const* const game_data = dat->game_dat;
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int success = 0; // if an error occurs, this value is <0
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int success = 0; // if an error occurs, this value is <0
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// clear render
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set_colour32(renderer, COLOUR32_BLACK); // using colour32 is more efficient, as it sets the colours directly
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success |= SDL_RenderClear(renderer);
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// clear render
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set_colour32(renderer, COLOUR32_BLACK); // using colour32 is more efficient, as it sets the colours directly
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success |= SDL_RenderClear(renderer);
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set_colour32(renderer, COLOUR32_WHITE);
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set_colour32(renderer, COLOUR32_WHITE);
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static SDL_Rect const field_size = {TET_PADDING, TET_PADDING, TET_WIDTH + 1, TET_HEIGHT + 1};
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SDL_RenderDrawRect(renderer, &field_size);
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draw_shape(renderer, game_data->nxt[game_data->curr_idx + 1], COLUMNS + 1, 3); // draw the next shape
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static SDL_Rect const field_size = {TET_PADDING, TET_PADDING, TET_WIDTH + 1, TET_HEIGHT + 1};
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SDL_RenderDrawRect(renderer, &field_size);
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draw_shape(renderer, game_data->nxt[game_data->curr_idx + 1], COLUMNS + 1, 3); // draw the next shape
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if (dat->font)
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draw_score_text(dat);
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if (dat->font)
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draw_score_text(dat);
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render_level(renderer, dat->game_dat);
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draw_shape(renderer, game_data->nxt[game_data->curr_idx], game_data->sel_x, game_data->sel_y); // draw the current shape
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render_level(renderer, dat->game_dat);
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draw_shape(renderer, game_data->nxt[game_data->curr_idx], game_data->sel_x, game_data->sel_y); // draw the current shape
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if (success < 0) {
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warn("something went wrong whilst renderering! SDL Error: %s\n", SDL_GetError());
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return;
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}
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if (success < 0) {
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warn("something went wrong whilst renderering! SDL Error: %s\n", SDL_GetError());
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return;
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}
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SDL_RenderPresent(renderer);
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SDL_RenderPresent(renderer);
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}
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void render_free(renderdata* const render_data) {
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SDL_DestroyRenderer(render_data->renderer);
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SDL_DestroyWindow(render_data->window);
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TTF_CloseFont(render_data->font);
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SDL_FreeSurface(render_data->cache->score_surface);
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SDL_DestroyTexture(render_data->cache->score_texture);
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free(render_data->cache);
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*render_data = (renderdata){0};
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SDL_DestroyRenderer(render_data->renderer);
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SDL_DestroyWindow(render_data->window);
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TTF_CloseFont(render_data->font);
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SDL_FreeSurface(render_data->cache->score_surface);
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SDL_DestroyTexture(render_data->cache->score_texture);
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free(render_data->cache);
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*render_data = (renderdata){0};
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}
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