thepigeongenerator/tetris_clone
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make a start on the logic

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This commit is contained in:
Quinn
2024-12-03 12:05:35 +01:00
parent 8bdf6bf2d2
commit c594c94428
5 changed files with 63 additions and 6 deletions
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13
src/game/game.c
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@@ -3,9 +3,20 @@
#include "../main.h"
static void add_shape(const Shape shape, Uint16* row) {
for (int i = 0; i < 4; i++) {
Uint8 rowData = (shape >> (4 * i)) & 0x0F;
if (rowData != 0)
row[4 - i] |= rowData;
}
}
// called every time the game's state is updated
void game_update(GameData game_data, const Uint8* keys) {
void game_update(GameData* game_data, const Uint8* keys) {
if (keys[SDL_SCANCODE_ESCAPE]) {
stop();
}
add_shape(TETROMINO_I, &game_data->row[4]);
}

27
src/game/game.h
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@@ -1,9 +1,34 @@
#pragma once
#include <SDL2/SDL.h>
typedef Uint16 Shape;
// 0 1 2 3
#define TETROMINO_I ((Shape)0b1000100010001000) // 1000 1000 1000 1000 the I tetromino with no rotation
#define TETROMINO_I_90 ((Shape)0b0000000000001111) // 0000 0000 0000 1111 the I tetromino with a no rotation
#define TETROMINO_O ((Shape)0b1100110000000000) // 1100 1100 0000 0000 the O tetromino with no rotation
#define TETROMINO_T ((Shape)0b1110010000000000) // 1110 0100 0000 0000 the T tetromino with no rotation
#define TETROMINO_T_90 ((Shape)0b1100110010000000) // 1100 1100 1000 0000 the T tetromino with a no rotation
#define TETROMINO_T_180 ((Shape)0b0100111000000000) // 0100 1110 0000 0000 the T tetromino with a 180° rotation
#define TETROMINO_T_270 ((Shape)0b0010011000100000) // 0010 0110 0010 0000 the T tetromino with a 270° rotation
#define TETROMINO_L ((Shape)0b1000100011000000) // 1000 1000 1100 0000 the L tetromino with no rotation
#define TETROMINO_L_90 ((Shape)0b1110100000000000) // 1110 1000 0000 0000 the L tetromino with a no rotation
#define TETROMINO_L_180 ((Shape)0b1100010001000000) // 1100 0100 0100 0000 the L tetromino with a 180° rotation
#define TETROMINO_L_270 ((Shape)0b0000001011100000) // 0000 0010 1110 0000 the L tetromino with a 270° rotation
#define TETROMINO_J ((Shape)0b0100010011000000) // 0100 0100 1100 0000 the J tetromino with no rotation
#define TETROMINO_J_90 ((Shape)0b1000111000000000) // 1000 1110 0000 0000 the J tetromino with a no rotation
#define TETROMINO_J_180 ((Shape)0b1100100010000000) // 1100 1000 1000 0000 the J tetromino with a 180° rotation
#define TETROMINO_J_270 ((Shape)0b1110001000000000) // 1110 0010 0000 0000 the J tetromino with a 270° rotation
#define TETROMINO_S ((Shape)0b0110110000000000) // 0110 1100 0000 0000 the S tetromino with no rotation
#define TETROMINO_S_90 ((Shape)0b1000110001000000) // 1000 1100 0100 0000 the S tetromino with a no rotation
#define TETROMINO_Z ((Shape)0b1100011000000000) // 1100 0110 0000 0000 the Z tetromino with no rotation
#define TETROMINO_Z_90 ((Shape)0b0100110010000000) // 0100 1100 1000 0000 the Z tetromino with a no rotation
// stores the data used in the game
#define ROWS 32
typedef struct {
Uint16 row[ROWS];
} GameData;
// updates the game's state
void game_update(GameData game_data, const Uint8* keys);
void game_update(GameData* game_data, const Uint8* keys);

8
src/main.c
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@@ -19,6 +19,8 @@ bool playing = true;
SDL_Window* window = NULL;
SDL_Renderer* renderer = NULL;
GameData game_data = {};
// handles game application initialisation
static void init(void) {
@@ -36,7 +38,7 @@ static void init(void) {
// initialize audio
AudioDevice* audio_device = audio_device_init(32000, AUDIO_S16, 1, 4096);
//AudioData audio1 = audio_load_wav(audio_device, "FILE MANE");
// AudioData audio1 = audio_load_wav(audio_device, "FILE MANE");
}
// handles game application updating
@@ -54,9 +56,9 @@ static void update(void) {
}
// preform updates
game_update((GameData){}, SDL_GetKeyboardState(NULL));
game_update(&game_data, SDL_GetKeyboardState(NULL));
renderer_update(&(RenderData){
window, renderer});
window, renderer, &game_data});
}
// handles game application quitting

14
src/window/renderer.c
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@@ -10,7 +10,7 @@
int renderer_init(SDL_Window** window, SDL_Renderer** renderer) {
// create a new window
*window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 100, 100, SDL_WINDOW_SHOWN);
*window = SDL_CreateWindow("tetris clone", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
if (*window == NULL) {
error(ERROR_SDL_RENDERER_INIT, "Window failed to be created! SDL Error: %s", SDL_GetError());
return -1;
@@ -28,6 +28,7 @@ int renderer_init(SDL_Window** window, SDL_Renderer** renderer) {
void renderer_update(const RenderData* render_data) {
SDL_Renderer* renderer = render_data->renderer;
GameData* data = render_data->game_data;
int success = 0; // if an error occurs, this value is <0
@@ -35,6 +36,17 @@ 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 (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});
}
}
}
if (success < 0) {
warn("\033[93mW\033[0m: something went wrong whilst renderering! SDL Error: %s\n", SDL_GetError());
return;

7
src/window/renderer.h
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@@ -1,9 +1,16 @@
#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_HEIGHT (SCREEN_HEIGHT / (BLOCK_WIDTH * 2))
typedef struct {
SDL_Window* window;
SDL_Renderer* renderer;
GameData* game_data;
} RenderData;
int renderer_init(SDL_Window** window, SDL_Renderer** renderer);