thepigeongenerator/tetris_clone
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add selected shape drawing

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Quinn
2025-01-29 10:45:28 +01:00
parent 16f5380ef4
commit 1a342d764c
3 changed files with 56 additions and 7 deletions
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36
src/window/renderer.c
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@@ -10,6 +10,7 @@
#include "../errors.h"
#include "../game/game.h"
#include "../game/tetromino/shapes.h"
#include "colour.h"
#include "renderer.h"
@@ -32,6 +33,14 @@ int renderer_init(SDL_Window** window, SDL_Renderer** renderer) {
return 0;
}
static inline int draw_block(SDL_Renderer* renderer, uint8_t x, uint8_t y) {
return SDL_RenderFillRect(renderer, &(SDL_Rect){x * BLOCK_WIDTH + 1, y * BLOCK_HEIGHT + 1, BLOCK_WIDTH - 1, BLOCK_HEIGHT - 1});
}
static inline void set_colour(SDL_Renderer* renderer, Colour c) {
(void)SDL_SetRenderDrawColor(renderer, colour_red32(c), colour_green32(c), colour_blue32(c), colour_alpha32(c));
}
void renderer_update(const RenderData* render_data) {
SDL_Renderer* renderer = render_data->renderer;
GameData* data = render_data->game_data;
@@ -42,17 +51,32 @@ void renderer_update(const RenderData* render_data) {
success |= SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
success |= SDL_RenderClear(renderer);
SelectedShape selected = render_data->game_data->selected;
Shape selected_shape = shape_from_id(selected.id);
Colour selected_colour = colour_from_id(selected.id);
set_colour(renderer, selected_colour);
// draw the selected block
for (uint8_t y = 0; y < SHAPE_HEIGHT; y++) {
ShapeRow shape_row = shape_get_row(selected_shape, y);
if (shape_row == 0)
continue;
for (uint8_t x = 0; x < SHAPE_WIDTH; x++)
if (is_set(shape_row, x))
draw_block(renderer, selected.x + x, selected.y + y);
}
// draw the block data in the level
for (uint8_t y = 0; y < ROWS; y++) {
Row row = data->row[y];
for (uint8_t x = 0; x < COLUMNS; x++) {
if (row.columns[x].packed != 0) {
success |= SDL_SetRenderDrawColor(renderer,
0x55 * row.columns[x].r, // repeat the 2 bits by multiplying by 0x55
0x55 * row.columns[x].g,
0x55 * row.columns[x].b,
0x55 * row.columns[x].a);
success |= SDL_RenderFillRect(renderer, &(SDL_Rect){x * BLOCK_WIDTH + 1, y * BLOCK_HEIGHT + 1, BLOCK_WIDTH - 1, BLOCK_HEIGHT - 1});
set_colour(renderer, row.columns[x]);
success |= draw_block(renderer, x, y);
}
}
}