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dc5d252c90
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883773d07c
3
.gitignore
vendored
3
.gitignore
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.cache
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compile_commands.json
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main
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3
.gitmodules
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3
.gitmodules
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[submodule "intern/aliases"]
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path = intern/aliases
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url = https://git.thewizardapprentice.com/abdelrahman/c-cpp-aliases.git
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# SDL Boilerplate
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Boilerplate for setting up a simple SDL program that creates a window and a renderer and handles the quit event.
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9
compile
9
compile
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#!/bin/bash
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CC=clang
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CFLAGS="-g -Wall -Iinclude -Iintern $(pkg-config --cflags sdl2)"
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LIBS="$(pkg-config --libs sdl2)"
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SRC=src/*.c
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OUT=main
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(set -x ; $CC $CFLAGS $LIBS $SRC -o $OUT)
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#ifndef COMPOSITOR_H
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#define COMPOSITOR_H
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#include "aliases/aliases.h"
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i32 run_main_loop(void);
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#endif // !COMPOSITOR_H
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#ifndef WINDOW_H
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#define WINDOW_H
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#include "SDL_pixels.h"
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#include "aliases/aliases.h"
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#include <SDL2/SDL_render.h>
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#include <SDL2/SDL_video.h>
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#include <stdbool.h>
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typedef struct point point_t;
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typedef struct line line_t;
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typedef struct triangle triangle_t;
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typedef struct window window_t;
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struct point {
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i32 x;
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i32 y;
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};
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struct line {
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point_t p0;
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point_t p1;
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};
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struct triangle {
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point_t p0;
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point_t p1;
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point_t p2;
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};
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struct window {
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u64 width;
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u64 height;
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const char *title;
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SDL_Window *window;
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SDL_Renderer *renderer;
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};
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typedef struct colour colour_t;
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struct colour {
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union {
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u32 abgr;
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SDL_Color colour;
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};
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};
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bool init_window(window_t *wnd, const char *title, u64 width, u64 height);
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void cleanup_window(window_t *wnd);
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void clear_window(const window_t *wnd, colour_t colour);
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void swap_buffers(const window_t *wnd);
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void draw_point(const window_t *wnd, point_t p, colour_t colour);
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void draw_line(const window_t *wnd, const line_t *ln, colour_t colour);
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void draw_triangle(const window_t *wnd, const triangle_t *triangle,
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colour_t colour);
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#endif // !WINDOW_H
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@ -1 +0,0 @@
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Subproject commit f95f3aa499910286876c1f2cdceea8146ebcf7b1
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47
main.c
Normal file
47
main.c
Normal file
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_events.h>
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#include <SDL2/SDL_render.h>
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#include <SDL2/SDL_video.h>
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#include <stdbool.h>
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#define WINDOW_WIDTH 800
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#define WINDOW_HEIGHT 600
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int main(void) {
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SDL_Init(SDL_INIT_EVERYTHING);
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SDL_Window *window =
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SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
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WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_SHOWN);
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SDL_Renderer *renderer = SDL_CreateRenderer(
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window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
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bool running = true;
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SDL_Event event = {};
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while (running) {
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_QUIT:
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running = false;
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break;
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}
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}
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SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
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SDL_RenderClear(renderer);
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SDL_RenderPresent(renderer);
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}
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SDL_DestroyRenderer(renderer);
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 0;
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}
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#include "aliases/aliases.h"
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#include "window.h"
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_events.h>
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#include <SDL2/SDL_render.h>
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#include <SDL2/SDL_video.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#define MAX_WINDOWS 2
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#define WINDOW_WIDTH 800
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#define WINDOW_HEIGHT 600
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typedef struct compositor compositor_t;
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struct compositor {
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window_t windows[MAX_WINDOWS];
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bool running;
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SDL_Event event;
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};
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i32 run_main_loop(void) {
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if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
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return EXIT_FAILURE;
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}
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compositor_t comp = {0};
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window_t *main_window = &(comp.windows[0]);
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if (!init_window(main_window, "Compositor", WINDOW_WIDTH, WINDOW_HEIGHT)) {
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SDL_Quit();
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return EXIT_FAILURE;
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}
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comp.running = true;
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colour_t bg_colour = {.abgr = 0xffffffff};
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colour_t fg_colour = {.abgr = 0xff000000};
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while (comp.running) {
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while (SDL_PollEvent(&(comp.event))) {
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switch (comp.event.type) {
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case SDL_QUIT:
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comp.running = false;
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break;
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}
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}
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clear_window(main_window, bg_colour);
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swap_buffers(main_window);
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}
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SDL_Quit();
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return EXIT_SUCCESS;
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}
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#include "aliases/aliases.h"
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#include "compositor.h"
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i32 main(void) { return run_main_loop(); }
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74
src/window.c
74
src/window.c
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#include "window.h"
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#include "SDL_render.h"
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#include "SDL_video.h"
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#include "aliases/aliases.h"
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#include <stdbool.h>
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bool init_window(window_t *wnd, const char *title, u64 width, u64 height) {
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wnd->window =
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SDL_CreateWindow(title, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
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width, height, SDL_WINDOW_SHOWN);
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if (!(wnd->window)) {
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return false;
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}
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wnd->renderer = SDL_CreateRenderer(
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wnd->window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
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if (!(wnd->renderer)) {
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cleanup_window(wnd);
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return false;
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}
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wnd->title = title;
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wnd->width = width;
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wnd->height = height;
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return true;
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}
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void cleanup_window(window_t *wnd) {
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if (wnd->renderer) {
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SDL_DestroyRenderer(wnd->renderer);
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wnd->renderer = NULL;
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}
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if (wnd->window) {
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SDL_DestroyWindow(wnd->window);
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wnd->window = NULL;
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}
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wnd->width = wnd->height = 0;
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}
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void set_colour(const window_t *wnd, colour_t colour) {
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SDL_SetRenderDrawColor(wnd->renderer, colour.colour.r, colour.colour.g,
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colour.colour.b, colour.colour.a);
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}
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void clear_window(const window_t *wnd, colour_t colour) {
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set_colour(wnd, colour);
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SDL_RenderClear(wnd->renderer);
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}
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void swap_buffers(const window_t *wnd) { SDL_RenderPresent(wnd->renderer); }
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void draw_point(const window_t *wnd, point_t p, colour_t colour) {
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set_colour(wnd, colour);
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SDL_RenderDrawPoint(wnd->renderer, p.x, p.y);
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}
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void draw_line(const window_t *wnd, const line_t *ln, colour_t colour) {
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set_colour(wnd, colour);
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SDL_RenderDrawLine(wnd->renderer, ln->p0.x, ln->p0.y, ln->p1.x, ln->p1.y);
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}
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void draw_triangle(const window_t *wnd, const triangle_t *triangle,
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colour_t colour) {
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line_t ln0 = {triangle->p0, triangle->p1};
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line_t ln1 = {triangle->p0, triangle->p2};
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line_t ln2 = {triangle->p1, triangle->p2};
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draw_line(wnd, &ln0, colour);
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draw_line(wnd, &ln1, colour);
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draw_line(wnd, &ln2, colour);
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}
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