thepigeongenerator/tetris_clone
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add colour

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This commit is contained in:
Quinn
2025-01-19 21:05:31 +01:00
parent 9362cb092c
commit 2933f5bdd8
4 changed files with 42 additions and 13 deletions
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29
src/window/renderer.c
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@@ -5,7 +5,7 @@
#include <stdio.h>
#include "../errors.h"
#include "../main.h"
#include "SDL_render.h"
int renderer_init(SDL_Window** window, SDL_Renderer** renderer) {
@@ -26,6 +26,16 @@ int renderer_init(SDL_Window** window, SDL_Renderer** renderer) {
return 0;
}
static inline int set_block(SDL_Renderer* renderer, const Row row, const uint8_t block, const uint8_t filter, const uint8_t x, const uint8_t y) {
uint8_t colour = block & filter;
return SDL_SetRenderDrawColor(renderer,
0xFF * (0 != (colour & (RED | RED << 3))),
0xFF * (0 != (colour & (GREEN | GREEN << 3))),
0xFF * (0 != (colour & (BLUE | BLUE << 3))),
0xFF) |
SDL_RenderFillRect(renderer, &(SDL_Rect){x * BLOCK_WIDTH + 1, y * BLOCK_HEIGHT + 1, BLOCK_WIDTH - 1, BLOCK_HEIGHT - 1});
}
void renderer_update(const RenderData* render_data) {
SDL_Renderer* renderer = render_data->renderer;
GameData* data = render_data->game_data;
@@ -36,14 +46,17 @@ void renderer_update(const RenderData* render_data) {
success |= SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0x50);
success |= SDL_RenderClear(renderer);
SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
for (int y = 0; y < ROWS; y++) {
Uint16 row = data->row[y];
for (uint8_t y = 0; y < ROWS; y++) {
Row row = data->row[y];
for (int x = 16; x >= 0; x--) {
if ((row & (1 << x)) != 0) {
success |= SDL_RenderFillRect(renderer, &(SDL_Rect){x * BLOCK_WIDTH + 1, y * BLOCK_HEIGHT + 1, BLOCK_WIDTH - 1, BLOCK_HEIGHT - 1});
}
for (uint8_t x = 0; x < COLUMNS; x += 2) {
uint8_t block = row >> (x * 3); // get the two blocks stored at this column
if ((block & 0x0F) != 0)
success |= set_block(renderer, row, block, 0x0F, x + 1, y);
if ((block & 0xF0) != 0)
success |= set_block(renderer, row, block, 0xF0, x, y);
}
}

16
src/window/renderer.h
View File

@@ -1,12 +1,26 @@
#pragma once
#include <SDL2/SDL.h>
#include "../game/game.h"
#define SCREEN_WIDTH 256
#define SCREEN_HEIGHT (SCREEN_WIDTH * 2)
#define BLOCK_WIDTH (SCREEN_WIDTH / 16)
#define BLOCK_WIDTH (SCREEN_WIDTH / COLUMNS)
#define BLOCK_HEIGHT (SCREEN_HEIGHT / (BLOCK_WIDTH * 2))
// fits colours in a 3 bit length
// 4th bit is unused
typedef enum {
BLACK = 0,
RED = 1,
GREEN = 2,
BLUE = 4,
YELLOW = RED | GREEN,
CYAN = GREEN | BLUE,
MAGENTA = BLUE | RED,
WHITE = RED | GREEN | BLUE,
} Colour;
typedef struct {
SDL_Window* window;
SDL_Renderer* renderer;