SDL 2.0
testnative.c File Reference
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "testnative.h"
+ Include dependency graph for testnative.c:

Go to the source code of this file.

Macros

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

Functions

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

Variables

static NativeWindowFactoryfactories []
 
static NativeWindowFactoryfactory = NULL
 
static voidnative_window
 
static SDL_Rectpositions
 
static SDL_Rectvelocities
 

Macro Definition Documentation

◆ MAX_SPEED

#define MAX_SPEED   1

Definition at line 23 of file testnative.c.

◆ NUM_SPRITES

#define NUM_SPRITES   100

Definition at line 22 of file testnative.c.

◆ WINDOW_H

#define WINDOW_H   480

Definition at line 21 of file testnative.c.

◆ WINDOW_W

#define WINDOW_W   640

Definition at line 20 of file testnative.c.

Function Documentation

◆ LoadSprite()

SDL_Texture * LoadSprite ( SDL_Renderer renderer,
char *  file 
)

Definition at line 53 of file testnative.c.

54{
55 SDL_Surface *temp;
57
58 /* Load the sprite image */
59 temp = SDL_LoadBMP(file);
60 if (temp == NULL) {
61 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s", file, SDL_GetError());
62 return 0;
63 }
64
65 /* Set transparent pixel as the pixel at (0,0) */
66 if (temp->format->palette) {
67 SDL_SetColorKey(temp, 1, *(Uint8 *) temp->pixels);
68 }
69
70 /* Create textures from the image */
72 if (!sprite) {
73 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create texture: %s\n", SDL_GetError());
74 SDL_FreeSurface(temp);
75 return 0;
76 }
77 SDL_FreeSurface(temp);
78
79 /* We're ready to roll. :) */
80 return sprite;
81}
#define SDL_SetColorKey
#define SDL_GetError
#define SDL_CreateTextureFromSurface
#define SDL_LogError
#define SDL_FreeSurface
@ SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
uint8_t Uint8
Definition: SDL_stdinc.h:179
#define SDL_LoadBMP(file)
Definition: SDL_surface.h:201
#define NULL
Definition: begin_code.h:167
SDL_Palette * palette
Definition: SDL_pixels.h:318
A collection of pixels used in software blitting.
Definition: SDL_surface.h:71
SDL_PixelFormat * format
Definition: SDL_surface.h:73
void * pixels
Definition: SDL_surface.h:76
static SDL_Renderer * renderer
static SDL_Texture * sprite

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

Referenced by main().

◆ main()

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

Definition at line 123 of file testnative.c.

124{
125 int i, done;
126 const char *driver;
130 int window_w, window_h;
131 int sprite_w, sprite_h;
133
134 /* Enable standard application logging */
136
137 if (SDL_VideoInit(NULL) < 0) {
138 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL video: %s\n",
139 SDL_GetError());
140 exit(1);
141 }
142 driver = SDL_GetCurrentVideoDriver();
143
144 /* Find a native window driver and create a native window */
145 for (i = 0; factories[i]; ++i) {
146 if (SDL_strcmp(driver, factories[i]->tag) == 0) {
148 break;
149 }
150 }
151 if (!factory) {
152 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't find native window code for %s driver\n",
153 driver);
154 quit(2);
155 }
156 SDL_Log("Creating native window for %s driver\n", driver);
158 if (!native_window) {
159 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create native window\n");
160 quit(3);
161 }
163 if (!window) {
164 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create SDL window: %s\n", SDL_GetError());
165 quit(4);
166 }
167 SDL_SetWindowTitle(window, "SDL Native Window Test");
168
169 /* Create the renderer */
171 if (!renderer) {
172 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create renderer: %s\n", SDL_GetError());
173 quit(5);
174 }
175
176 /* Clear the window, load the sprite and go! */
177 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
179
180 sprite = LoadSprite(renderer, "icon.bmp");
181 if (!sprite) {
182 quit(6);
183 }
184
185 /* Allocate memory for the sprite info */
190 if (!positions || !velocities) {
191 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory!\n");
192 quit(2);
193 }
194 srand(time(NULL));
195 for (i = 0; i < NUM_SPRITES; ++i) {
196 positions[i].x = rand() % (window_w - sprite_w);
197 positions[i].y = rand() % (window_h - sprite_h);
200 velocities[i].x = 0;
201 velocities[i].y = 0;
202 while (!velocities[i].x && !velocities[i].y) {
203 velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
204 velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
205 }
206 }
207
208 /* Main render loop */
209 done = 0;
210 while (!done) {
211 /* Check for events */
212 while (SDL_PollEvent(&event)) {
213 switch (event.type) {
214 case SDL_WINDOWEVENT:
215 switch (event.window.event) {
217 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
219 break;
220 }
221 break;
222 case SDL_QUIT:
223 done = 1;
224 break;
225 default:
226 break;
227 }
228 }
230 }
231
232 quit(0);
233
234 return 0; /* to prevent compiler warning */
235}
#define SDL_QueryTexture
#define SDL_GetWindowSize
#define SDL_CreateWindowFrom
#define SDL_GetCurrentVideoDriver
#define SDL_PollEvent
#define SDL_SetRenderDrawColor
#define SDL_VideoInit
#define SDL_CreateRenderer
#define SDL_malloc
#define SDL_LogSetPriority
#define SDL_RenderClear
#define SDL_strcmp
#define SDL_Log
#define SDL_SetWindowTitle
@ SDL_QUIT
Definition: SDL_events.h:60
@ SDL_WINDOWEVENT
Definition: SDL_events.h:92
@ SDL_LOG_PRIORITY_INFO
Definition: SDL_log.h:106
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1574
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1574
struct _cl_event * event
@ SDL_WINDOWEVENT_EXPOSED
Definition: SDL_video.h:151
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
int done
Definition: checkkeys.c:28
EGLSurface EGLnsecsANDROID time
Definition: eglext.h:518
EGLConfig void * native_window
Definition: eglext.h:790
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
void *(* CreateNativeWindow)(int w, int h)
Definition: testnative.h:25
A rectangle, with the origin at the upper left (integer).
Definition: SDL_rect.h:78
int h
Definition: SDL_rect.h:80
int w
Definition: SDL_rect.h:80
int y
Definition: SDL_rect.h:79
int x
Definition: SDL_rect.h:79
The type used to identify a window.
Definition: SDL_sysvideo.h:74
SDL_Texture * LoadSprite(SDL_Renderer *renderer, char *file)
Definition: testnative.c:53
static void quit(int rc)
Definition: testnative.c:43
static SDL_Rect * velocities
Definition: testnative.c:39
#define WINDOW_W
Definition: testnative.c:20
#define NUM_SPRITES
Definition: testnative.c:22
static SDL_Rect * positions
Definition: testnative.c:39
#define MAX_SPEED
Definition: testnative.c:23
static NativeWindowFactory * factories[]
Definition: testnative.c:25
#define WINDOW_H
Definition: testnative.c:21
void MoveSprites(SDL_Renderer *renderer, SDL_Texture *sprite)
Definition: testnative.c:84
static NativeWindowFactory * factory
Definition: testnative.c:37
int window_w
Definition: testoverlay2.c:143
int window_h
Definition: testoverlay2.c:144
static int sprite_w
Definition: testsprite2.c:38
static int sprite_h
Definition: testsprite2.c:38
General event structure.
Definition: SDL_events.h:558

References NativeWindowFactory::CreateNativeWindow, done, factories, factory, SDL_Rect::h, i, LoadSprite(), MAX_SPEED, MoveSprites(), NULL, NUM_SPRITES, positions, 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, velocities, SDL_Rect::w, WINDOW_H, window_h, WINDOW_W, window_w, SDL_Rect::x, and SDL_Rect::y.

◆ MoveSprites()

void MoveSprites ( SDL_Renderer renderer,
SDL_Texture sprite 
)

Definition at line 84 of file testnative.c.

85{
86 int sprite_w, sprite_h;
87 int i;
89 SDL_Rect *position, *velocity;
90
91 /* Query the sizes */
94
95 /* Draw a gray background */
96 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
98
99 /* Move the sprite, bounce at the wall, and draw */
100 for (i = 0; i < NUM_SPRITES; ++i) {
101 position = &positions[i];
102 velocity = &velocities[i];
103 position->x += velocity->x;
104 if ((position->x < 0) || (position->x >= (viewport.w - sprite_w))) {
105 velocity->x = -velocity->x;
106 position->x += velocity->x;
107 }
108 position->y += velocity->y;
109 if ((position->y < 0) || (position->y >= (viewport.h - sprite_h))) {
110 velocity->y = -velocity->y;
111 position->y += velocity->y;
112 }
113
114 /* Blit the sprite onto the screen */
115 SDL_RenderCopy(renderer, sprite, NULL, position);
116 }
117
118 /* Update the screen! */
120}
#define SDL_RenderPresent
#define SDL_RenderGetViewport
#define SDL_RenderCopy
SDL_Rect viewport
Definition: testviewport.c:28

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

Referenced by main().

◆ quit()

static void quit ( int  rc)
static

Definition at line 43 of file testnative.c.

44{
46 if (native_window) {
48 }
49 exit(rc);
50}
#define SDL_VideoQuit
void(* DestroyNativeWindow)(void *window)
Definition: testnative.h:26

References NativeWindowFactory::DestroyNativeWindow, factory, and SDL_VideoQuit.

Referenced by main().

Variable Documentation

◆ factories

NativeWindowFactory* factories[]
static
Initial value:
= {
}

Definition at line 25 of file testnative.c.

Referenced by main().

◆ factory

NativeWindowFactory* factory = NULL
static

Definition at line 37 of file testnative.c.

Referenced by main(), and quit().

◆ native_window

Definition at line 38 of file testnative.c.

◆ positions

SDL_Rect* positions
static

Definition at line 39 of file testnative.c.

Referenced by main(), and MoveSprites().

◆ velocities

SDL_Rect * velocities
static

Definition at line 39 of file testnative.c.

Referenced by main(), and MoveSprites().