#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "testnative.h"

Include dependency graph for testnative.c:

Macros
#define	WINDOW_W 640
#define	WINDOW_H 480
#define	NUM_SPRITES 100
#define	MAX_SPEED 1

Functions
static void	quit (int rc)
SDL_Texture *	LoadSprite (SDL_Renderer renderer, char file)
void	MoveSprites (SDL_Renderer renderer, SDL_Texture sprite)
int	main (int argc, char *argv[])

Variables
static NativeWindowFactory *	factories []
static NativeWindowFactory *	factory = NULL
static void *	native_window
static SDL_Rect *	positions
static SDL_Rect *	velocities

Macro Definition Documentation

#define MAX_SPEED 1

Definition at line 23 of file testnative.c.

Referenced by main().

#define NUM_SPRITES 100

Definition at line 22 of file testnative.c.

Referenced by main(), and MoveSprites().

#define WINDOW_H 480

Definition at line 21 of file testnative.c.

Referenced by main().

#define WINDOW_W 640

Definition at line 20 of file testnative.c.

Referenced by main().

Function Documentation

SDL_Texture* LoadSprite	(	SDL_Renderer *	renderer,
		char *	file
	)

Definition at line 53 of file testnative.c.

References SDL_Surface::format, NULL, SDL_PixelFormat::palette, SDL_Surface::pixels, SDL_CreateTextureFromSurface, SDL_FreeSurface, SDL_GetError, SDL_LoadBMP, SDL_LOG_CATEGORY_APPLICATION, SDL_LogError, SDL_SetColorKey, and sprite.

Referenced by main().

{
    SDL_Surface *temp;
    SDL_Texture *sprite;
    /* Load the sprite image */
    temp = SDL_LoadBMP(file);
    if (temp == NULL) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s", file, SDL_GetError());
        return 0;
    }
    /* Set transparent pixel as the pixel at (0,0) */
    if (temp->format->palette) {
        SDL_SetColorKey(temp, 1, *(Uint8 *) temp->pixels);
    }
    /* Create textures from the image */
    sprite = SDL_CreateTextureFromSurface(renderer, temp);
    if (!sprite) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create texture: %s\n", SDL_GetError());
        SDL_FreeSurface(temp);
        return 0;
    }
    SDL_FreeSurface(temp);
    /* We're ready to roll. :) */
    return sprite;
}

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 123 of file testnative.c.

References NativeWindowFactory::CreateNativeWindow, done, SDL_WindowEvent::event, SDL_Rect::h, i, LoadSprite(), MAX_SPEED, MoveSprites(), NULL, NUM_SPRITES, quit(), renderer, SDL_CreateRenderer, SDL_CreateWindowFrom, SDL_GetCurrentVideoDriver, SDL_GetError, SDL_GetWindowSize, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogError, SDL_LogSetPriority, SDL_malloc, SDL_PollEvent, SDL_QueryTexture, SDL_QUIT, SDL_RenderClear, SDL_SetRenderDrawColor, SDL_SetWindowTitle, SDL_strcmp, SDL_VideoInit, SDL_WINDOWEVENT, SDL_WINDOWEVENT_EXPOSED, sprite, sprite_h, sprite_w, SDL_Event::type, SDL_Rect::w, SDL_Event::window, WINDOW_H, window_h, WINDOW_W, window_w, SDL_Rect::x, and SDL_Rect::y.

{
    int i, done;
    const char *driver;
    SDL_Window *window;
    SDL_Renderer *renderer;
    SDL_Texture *sprite;
    int window_w, window_h;
    int sprite_w, sprite_h;
    SDL_Event event;
    /* Enable standard application logging */
    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
    if (SDL_VideoInit(NULL) < 0) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL video: %s\n",
                SDL_GetError());
        exit(1);
    }
    driver = SDL_GetCurrentVideoDriver();
    /* Find a native window driver and create a native window */
    for (i = 0; factories[i]; ++i) {
        if (SDL_strcmp(driver, factories[i]->tag) == 0) {
            factory = factories[i];
            break;
        }
    }
    if (!factory) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't find native window code for %s driver\n",
                driver);
        quit(2);
    }
    SDL_Log("Creating native window for %s driver\n", driver);
    native_window = factory->CreateNativeWindow(WINDOW_W, WINDOW_H);
    if (!native_window) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create native window\n");
        quit(3);
    }
    window = SDL_CreateWindowFrom(native_window);
    if (!window) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create SDL window: %s\n", SDL_GetError());
        quit(4);
    }
    SDL_SetWindowTitle(window, "SDL Native Window Test");
    /* Create the renderer */
    renderer = SDL_CreateRenderer(window, -1, 0);
    if (!renderer) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create renderer: %s\n", SDL_GetError());
        quit(5);
    }
    /* Clear the window, load the sprite and go! */
    SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
    SDL_RenderClear(renderer);
    sprite = LoadSprite(renderer, "icon.bmp");
    if (!sprite) {
        quit(6);
    }
    /* Allocate memory for the sprite info */
    SDL_GetWindowSize(window, &window_w, &window_h);
    SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
    positions = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
    velocities = (SDL_Rect *) SDL_malloc(NUM_SPRITES * sizeof(SDL_Rect));
    if (!positions || !velocities) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory!\n");
        quit(2);
    }
    srand(time(NULL));
    for (i = 0; i < NUM_SPRITES; ++i) {
        positions[i].x = rand() % (window_w - sprite_w);
        positions[i].y = rand() % (window_h - sprite_h);
        positions[i].w = sprite_w;
        positions[i].h = sprite_h;
        velocities[i].x = 0;
        velocities[i].y = 0;
        while (!velocities[i].x && !velocities[i].y) {
            velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
            velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
        }
    }
    /* Main render loop */
    done = 0;
    while (!done) {
        /* Check for events */
        while (SDL_PollEvent(&event)) {
            switch (event.type) {
            case SDL_WINDOWEVENT:
                switch (event.window.event) {
                case SDL_WINDOWEVENT_EXPOSED:
                    SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
                    SDL_RenderClear(renderer);
                    break;
                }
                break;
            case SDL_QUIT:
                done = 1;
                break;
            default:
                break;
            }
        }
        MoveSprites(renderer, sprite);
    }
    quit(0);
    return 0; /* to prevent compiler warning */
}

void MoveSprites	(	SDL_Renderer *	renderer,
		SDL_Texture *	sprite
	)

Definition at line 84 of file testnative.c.

References SDL_Rect::h, i, NULL, NUM_SPRITES, SDL_QueryTexture, SDL_RenderClear, SDL_RenderCopy, SDL_RenderGetViewport, SDL_RenderPresent, SDL_SetRenderDrawColor, sprite_h, sprite_w, viewport, SDL_Rect::w, SDL_Rect::x, and SDL_Rect::y.

Referenced by loop(), and main().

{
    int sprite_w, sprite_h;
    int i;
    SDL_Rect viewport;
    SDL_Rect *position, *velocity;
    /* Query the sizes */
    SDL_RenderGetViewport(renderer, &viewport);
    SDL_QueryTexture(sprite, NULL, NULL, &sprite_w, &sprite_h);
    /* 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 >= (viewport.w - sprite_w))) {
            velocity->x = -velocity->x;
            position->x += velocity->x;
        }
        position->y += velocity->y;
        if ((position->y < 0) || (position->y >= (viewport.h - sprite_h))) {
            velocity->y = -velocity->y;
            position->y += velocity->y;
        }
        /* Blit the sprite onto the screen */
        SDL_RenderCopy(renderer, sprite, NULL, position);
    }
    /* Update the screen! */
    SDL_RenderPresent(renderer);
}

static void quit ( int rc )

static

Definition at line 43 of file testnative.c.

References NativeWindowFactory::DestroyNativeWindow, and SDL_VideoQuit.

{
    SDL_VideoQuit();
    if (native_window) {
        factory->DestroyNativeWindow(native_window);
    }
    exit(rc);
}

Variable Documentation

NativeWindowFactory* factories[]

static

Initial value:

 {
    NULL
}

Definition at line 25 of file testnative.c.

NativeWindowFactory* factory = NULL

static

Definition at line 37 of file testnative.c.

void* native_window

static

Definition at line 38 of file testnative.c.

SDL_Rect* positions

static

Definition at line 39 of file testnative.c.

SDL_Rect * velocities

static

Definition at line 39 of file testnative.c.

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation