Mercurial > sdl-ios-xcode

annotate test/testspriteminimal.c @ 5194:93052810ceb5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Allow SDL_HINT_FRAMEBUFFER_ACCELERATION to specify the renderer to use.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 05 Feb 2011 10:11:27 -0800
parents b3ccd1947786
children
rev   line source
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
1 /* Simple program: Move N sprites around on the screen as fast as possible */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
2
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
3 #include <stdlib.h>
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
4 #include <stdio.h>
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
5 #include <time.h>
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
6
4969
d2247eb39fab Need to include SDL_main.h ... eh, just include everything. :)
Sam Lantinga <slouken@libsdl.org>
parents: 3685
diff changeset
7 #include "SDL.h"
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
8
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
9 #define WINDOW_WIDTH 640
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
10 #define WINDOW_HEIGHT 480
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
11 #define NUM_SPRITES 100
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
12 #define MAX_SPEED 1
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
13
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3596
diff changeset
14 static SDL_Texture *sprite;
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
15 static SDL_Rect positions[NUM_SPRITES];
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
16 static SDL_Rect velocities[NUM_SPRITES];
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
17 static int sprite_w, sprite_h;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
18
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
19 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
20 static void
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
21 quit(int rc)
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
22 {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
23 exit(rc);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
24 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
25
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
26 int
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
27 LoadSprite(char *file, SDL_Renderer *renderer)
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
28 {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
29 SDL_Surface *temp;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
30
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
31 /* Load the sprite image */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
32 temp = SDL_LoadBMP(file);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
33 if (temp == NULL) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
34 fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35 return (-1);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
37 sprite_w = temp->w;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
38 sprite_h = temp->h;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
40 /* Set transparent pixel as the pixel at (0,0) */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
41 if (temp->format->palette) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
42 SDL_SetColorKey(temp, SDL_TRUE, *(Uint8 *) temp->pixels);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
43 } else {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
44 switch (temp->format->BitsPerPixel) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
45 case 15:
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
46 SDL_SetColorKey(temp, SDL_TRUE,
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
47 (*(Uint16 *) temp->pixels) & 0x00007FFF);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
48 break;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
49 case 16:
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
50 SDL_SetColorKey(temp, SDL_TRUE, *(Uint16 *) temp->pixels);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
51 break;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
52 case 24:
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
53 SDL_SetColorKey(temp, SDL_TRUE,
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
54 (*(Uint32 *) temp->pixels) & 0x00FFFFFF);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
55 break;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
56 case 32:
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
57 SDL_SetColorKey(temp, SDL_TRUE, *(Uint32 *) temp->pixels);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58 break;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
60 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
61
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
62 /* Create textures from the image */
5161
b3ccd1947786 Simplified and improved the process of creating a texture from a surface.
Sam Lantinga <slouken@libsdl.org>
parents: 5150
diff changeset
63 sprite = SDL_CreateTextureFromSurface(renderer, temp);
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
64 if (!sprite) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
65 fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
66 SDL_FreeSurface(temp);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
67 return (-1);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
68 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
69 SDL_FreeSurface(temp);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
70
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
71 /* We're ready to roll. :) */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
72 return (0);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
73 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
74
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
75 void
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
76 MoveSprites(SDL_Window * window, SDL_Renderer * renderer, SDL_Texture * sprite)
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
77 {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
78 int i;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
79 int window_w = WINDOW_WIDTH;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
80 int window_h = WINDOW_HEIGHT;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
81 SDL_Rect *position, *velocity;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
82
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
83 /* Draw a gray background */
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
84 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
85 SDL_RenderClear(renderer);
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
86
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
87 /* Move the sprite, bounce at the wall, and draw */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
88 for (i = 0; i < NUM_SPRITES; ++i) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
89 position = &positions[i];
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
90 velocity = &velocities[i];
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
91 position->x += velocity->x;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
92 if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
93 velocity->x = -velocity->x;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
94 position->x += velocity->x;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
95 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
96 position->y += velocity->y;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
97 if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
98 velocity->y = -velocity->y;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
99 position->y += velocity->y;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
100 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
101
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
102 /* Blit the sprite onto the screen */
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
103 SDL_RenderCopy(renderer, sprite, NULL, position);
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
104 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
105
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
106 /* Update the screen! */
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
107 SDL_RenderPresent(renderer);
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
108 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
109
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
110 int
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
111 main(int argc, char *argv[])
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
112 {
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3596
diff changeset
113 SDL_Window *window;
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
114 SDL_Renderer *renderer;
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
115 int i, done;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
116 SDL_Event event;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
117
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
118 window = SDL_CreateWindow("Happy Smileys",
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
119 SDL_WINDOWPOS_UNDEFINED,
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
120 SDL_WINDOWPOS_UNDEFINED,
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
121 WINDOW_WIDTH, WINDOW_HEIGHT,
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
122 SDL_WINDOW_SHOWN);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
123 if (!window) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
124 quit(2);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
125 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
126
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
127 renderer = SDL_CreateRenderer(window, -1, 0);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
128 if (!renderer) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
129 quit(2);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
130 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
131
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
132 if (LoadSprite("icon.bmp", renderer) < 0) {
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
133 quit(2);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
134 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
136 /* Initialize the sprite positions */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 srand(time(NULL));
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138 for (i = 0; i < NUM_SPRITES; ++i) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139 positions[i].x = rand() % (WINDOW_WIDTH - sprite_w);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 positions[i].y = rand() % (WINDOW_HEIGHT - sprite_h);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 positions[i].w = sprite_w;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142 positions[i].h = sprite_h;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 velocities[i].x = 0;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 velocities[i].y = 0;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 while (!velocities[i].x && !velocities[i].y) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 /* Main render loop */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 done = 0;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 while (!done) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 /* Check for events */
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 while (SDL_PollEvent(&event)) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 if (event.type == SDL_QUIT || event.type == SDL_KEYDOWN) {
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 done = 1;
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 }
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 4969
diff changeset
160 MoveSprites(window, renderer, sprite);
3417
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 quit(0);
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 }
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165
64a60c5d502e Automatically initialize the video system and create a renderer to simplify use.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 /* vi: set ts=4 sw=4 expandtab: */