1/*
2 Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
3
4 This software is provided 'as-is', without any express or implied
5 warranty. In no event will the authors be held liable for any damages
6 arising from the use of this software.
7
8 Permission is granted to anyone to use this software for any purpose,
9 including commercial applications, and to alter it and redistribute it
10 freely.
11*/
12/********************************************************************************
13 * *
14 * Running moose :) Coded by Mike Gorchak. *
15 * *
16 ********************************************************************************/
17
18#include <stdlib.h>
19#include <stdio.h>
20
21#ifdef __EMSCRIPTEN__
22#include <emscripten/emscripten.h>
23#endif
24
25#include "SDL.h"
26
27#define MOOSEPIC_W 64
28#define MOOSEPIC_H 88
29
30#define MOOSEFRAME_SIZE (MOOSEPIC_W * MOOSEPIC_H)
31#define MOOSEFRAMES_COUNT 10
32
33SDL_Color MooseColors[84] = {
34 {49, 49, 49, 255}, {66, 24, 0, 255}, {66, 33, 0, 255}, {66, 66, 66, 255},
35 {66, 115, 49, 255}, {74, 33, 0, 255}, {74, 41, 16, 255}, {82, 33, 8, 255},
36 {82, 41, 8, 255}, {82, 49, 16, 255}, {82, 82, 82, 255}, {90, 41, 8, 255},
37 {90, 41, 16, 255}, {90, 57, 24, 255}, {99, 49, 16, 255}, {99, 66, 24, 255},
38 {99, 66, 33, 255}, {99, 74, 33, 255}, {107, 57, 24, 255}, {107, 82, 41, 255},
39 {115, 57, 33, 255}, {115, 66, 33, 255}, {115, 66, 41, 255}, {115, 74, 0, 255},
40 {115, 90, 49, 255}, {115, 115, 115, 255}, {123, 82, 0, 255}, {123, 99, 57, 255},
41 {132, 66, 41, 255}, {132, 74, 41, 255}, {132, 90, 8, 255}, {132, 99, 33, 255},
42 {132, 99, 66, 255}, {132, 107, 66, 255}, {140, 74, 49, 255}, {140, 99, 16, 255},
43 {140, 107, 74, 255}, {140, 115, 74, 255}, {148, 107, 24, 255}, {148, 115, 82, 255},
44 {148, 123, 74, 255}, {148, 123, 90, 255}, {156, 115, 33, 255}, {156, 115, 90, 255},
45 {156, 123, 82, 255}, {156, 132, 82, 255}, {156, 132, 99, 255}, {156, 156, 156, 255},
46 {165, 123, 49, 255}, {165, 123, 90, 255}, {165, 132, 82, 255}, {165, 132, 90, 255},
47 {165, 132, 99, 255}, {165, 140, 90, 255}, {173, 132, 57, 255}, {173, 132, 99, 255},
48 {173, 140, 107, 255}, {173, 140, 115, 255}, {173, 148, 99, 255}, {173, 173, 173, 255},
49 {181, 140, 74, 255}, {181, 148, 115, 255}, {181, 148, 123, 255}, {181, 156, 107, 255},
50 {189, 148, 123, 255}, {189, 156, 82, 255}, {189, 156, 123, 255}, {189, 156, 132, 255},
51 {189, 189, 189, 255}, {198, 156, 123, 255}, {198, 165, 132, 255}, {206, 165, 99, 255},
52 {206, 165, 132, 255}, {206, 173, 140, 255}, {206, 206, 206, 255}, {214, 173, 115, 255},
53 {214, 173, 140, 255}, {222, 181, 148, 255}, {222, 189, 132, 255}, {222, 189, 156, 255},
54 {222, 222, 222, 255}, {231, 198, 165, 255}, {231, 231, 231, 255}, {239, 206, 173, 255}
55};
56
57Uint8 MooseFrames[MOOSEFRAMES_COUNT][MOOSEFRAME_SIZE];
58
59SDL_Renderer *renderer;
60int frame;
61SDL_Texture *MooseTexture;
62SDL_bool done = SDL_FALSE;
63
64void quit(int rc)
65{
66 SDL_Quit();
67 exit(rc);
68}
69
70void UpdateTexture(SDL_Texture *texture)
71{
72 SDL_Color *color;
73 Uint8 *src;
74 Uint32 *dst;
75 int row, col;
76 void *pixels;
77 int pitch;
78
79 if (SDL_LockTexture(texture, NULL, &pixels, &pitch) < 0) {
80 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't lock texture: %s\n", SDL_GetError());
81 quit(5);
82 }
83 src = MooseFrames[frame];
84 for (row = 0; row < MOOSEPIC_H; ++row) {
85 dst = (Uint32*)((Uint8*)pixels + row * pitch);
86 for (col = 0; col < MOOSEPIC_W; ++col) {
87 color = &MooseColors[*src++];
88 *dst++ = (0xFF000000|(color->r<<16)|(color->g<<8)|color->b);
89 }
90 }
91 SDL_UnlockTexture(texture);
92}
93
94void
95loop()
96{
97 SDL_Event event;
98
99 while (SDL_PollEvent(&event)) {
100 switch (event.type) {
101 case SDL_KEYDOWN:
102 if (event.key.keysym.sym == SDLK_ESCAPE) {
103 done = SDL_TRUE;
104 }
105 break;
106 case SDL_QUIT:
107 done = SDL_TRUE;
108 break;
109 }
110 }
111
112 frame = (frame + 1) % MOOSEFRAMES_COUNT;
113 UpdateTexture(MooseTexture);
114
115 SDL_RenderClear(renderer);
116 SDL_RenderCopy(renderer, MooseTexture, NULL, NULL);
117 SDL_RenderPresent(renderer);
118
119#ifdef __EMSCRIPTEN__
120 if (done) {
121 emscripten_cancel_main_loop();
122 }
123#endif
124}
125
126int
127main(int argc, char **argv)
128{
129 SDL_Window *window;
130 SDL_RWops *handle;
131
132 /* Enable standard application logging */
133 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
134
135 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
136 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
137 return 1;
138 }
139
140 /* load the moose images */
141 handle = SDL_RWFromFile("moose.dat", "rb");
142 if (handle == NULL) {
143 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Can't find the file moose.dat !\n");
144 quit(2);
145 }
146 SDL_RWread(handle, MooseFrames, MOOSEFRAME_SIZE, MOOSEFRAMES_COUNT);
147 SDL_RWclose(handle);
148
149
150 /* Create the window and renderer */
151 window = SDL_CreateWindow("Happy Moose",
152 SDL_WINDOWPOS_UNDEFINED,
153 SDL_WINDOWPOS_UNDEFINED,
154 MOOSEPIC_W*4, MOOSEPIC_H*4,
155 SDL_WINDOW_RESIZABLE);
156 if (!window) {
157 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create window: %s\n", SDL_GetError());
158 quit(3);
159 }
160
161 renderer = SDL_CreateRenderer(window, -1, 0);
162 if (!renderer) {
163 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create renderer: %s\n", SDL_GetError());
164 quit(4);
165 }
166
167 MooseTexture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, MOOSEPIC_W, MOOSEPIC_H);
168 if (!MooseTexture) {
169 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set create texture: %s\n", SDL_GetError());
170 quit(5);
171 }
172
173 /* Loop, waiting for QUIT or the escape key */
174 frame = 0;
175
176#ifdef __EMSCRIPTEN__
177 emscripten_set_main_loop(loop, 0, 1);
178#else
179 while (!done) {
180 loop();
181 }
182#endif
183
184 SDL_DestroyRenderer(renderer);
185
186 quit(0);
187 return 0;
188}
189
190/* vi: set ts=4 sw=4 expandtab: */
191