chore(build): use SDL3

vendor/sdl-3.2.10/test/testspriteminimal.c

@@ -0,0 +1,166 @@
+/*
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+/* Simple program:  Move N sprites around on the screen as fast as possible */
+
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+
+#ifdef SDL_PLATFORM_EMSCRIPTEN
+#include <emscripten/emscripten.h>
+#endif
+
+#include "icon.h"
+
+#define WINDOW_WIDTH  640
+#define WINDOW_HEIGHT 480
+#define NUM_SPRITES   100
+#define MAX_SPEED     1
+
+static SDL_Texture *sprite;
+static SDL_FRect positions[NUM_SPRITES];
+static SDL_FRect velocities[NUM_SPRITES];
+static int sprite_w, sprite_h;
+
+static SDL_Renderer *renderer;
+static int done;
+
+static SDL_Texture *CreateTexture(SDL_Renderer *r, unsigned char *data, unsigned int len, int *w, int *h)
+{
+    SDL_Texture *texture = NULL;
+    SDL_Surface *surface;
+    SDL_IOStream *src = SDL_IOFromConstMem(data, len);
+    if (src) {
+        surface = SDL_LoadBMP_IO(src, true);
+        if (surface) {
+            /* Treat white as transparent */
+            SDL_SetSurfaceColorKey(surface, true, SDL_MapSurfaceRGB(surface, 255, 255, 255));
+
+            texture = SDL_CreateTextureFromSurface(r, surface);
+            *w = surface->w;
+            *h = surface->h;
+            SDL_DestroySurface(surface);
+        }
+    }
+    return texture;
+}
+
+static void MoveSprites(void)
+{
+    int i;
+    int window_w = WINDOW_WIDTH;
+    int window_h = WINDOW_HEIGHT;
+    SDL_FRect *position, *velocity;
+
+    /* Draw a gray background */
+    SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
+    SDL_RenderClear(renderer);
+
+    /* Move the sprite, bounce at the wall, and draw */
+    for (i = 0; i < NUM_SPRITES; ++i) {
+        position = &positions[i];
+        velocity = &velocities[i];
+        position->x += velocity->x;
+        if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
+            velocity->x = -velocity->x;
+            position->x += velocity->x;
+        }
+        position->y += velocity->y;
+        if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
+            velocity->y = -velocity->y;
+            position->y += velocity->y;
+        }
+
+        /* Blit the sprite onto the screen */
+        SDL_RenderTexture(renderer, sprite, NULL, position);
+    }
+
+    /* Update the screen! */
+    SDL_RenderPresent(renderer);
+}
+
+static void loop(void)
+{
+    SDL_Event event;
+
+    /* Check for events */
+    while (SDL_PollEvent(&event)) {
+        if (event.type == SDL_EVENT_QUIT ||
+            (event.type == SDL_EVENT_KEY_DOWN && event.key.key == SDLK_ESCAPE)) {
+            done = 1;
+        }
+    }
+    MoveSprites();
+#ifdef SDL_PLATFORM_EMSCRIPTEN
+    if (done) {
+        emscripten_cancel_main_loop();
+    }
+#endif
+}
+
+int main(int argc, char *argv[])
+{
+    SDL_Window *window = NULL;
+    int return_code = -1;
+    int i;
+
+    if (argc > 1) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "USAGE: %s", argv[0]);
+        return_code = 1;
+        goto quit;
+    }
+
+    if (!SDL_CreateWindowAndRenderer("testspriteminimal", WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_RESIZABLE, &window, &renderer)) {
+        return_code = 2;
+        goto quit;
+    }
+
+    SDL_SetRenderLogicalPresentation(renderer, WINDOW_WIDTH, WINDOW_HEIGHT, SDL_LOGICAL_PRESENTATION_LETTERBOX);
+
+    sprite = CreateTexture(renderer, icon_bmp, icon_bmp_len, &sprite_w, &sprite_h);
+
+    if (!sprite) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create texture (%s)", SDL_GetError());
+        return_code = 3;
+        goto quit;
+    }
+
+    /* Initialize the sprite positions */
+    for (i = 0; i < NUM_SPRITES; ++i) {
+        positions[i].x = (float)SDL_rand(WINDOW_WIDTH - sprite_w);
+        positions[i].y = (float)SDL_rand(WINDOW_HEIGHT - sprite_h);
+        positions[i].w = (float)sprite_w;
+        positions[i].h = (float)sprite_h;
+        velocities[i].x = 0.0f;
+        velocities[i].y = 0.0f;
+        while (velocities[i].x == 0.f && velocities[i].y == 0.f) {
+            velocities[i].x = (float)(SDL_rand(MAX_SPEED * 2 + 1) - MAX_SPEED);
+            velocities[i].y = (float)(SDL_rand(MAX_SPEED * 2 + 1) - MAX_SPEED);
+        }
+    }
+
+    /* Main render loop */
+    done = 0;
+
+#ifdef SDL_PLATFORM_EMSCRIPTEN
+    emscripten_set_main_loop(loop, 0, 1);
+#else
+    while (!done) {
+        loop();
+    }
+#endif
+    return_code = 0;
+quit:
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+    return return_code;
+}