annotate test/nds-test-progs/sprite2/source/testsprite2.c @ 2884:9dde605c7540

Date: Fri, 19 Dec 2008 20:17:35 +0100 From: Couriersud Subject: Re: Aw: Experience using SDL1.3 in sdlmame/Proposal for api additions > For consistency you'd probably want: > SDL_SetRenderDrawColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a); > SDL_SetRenderDrawBlendMode(SDL_BlendMode blendMode); > SDL_RenderLine(int x1, int y1, int x2, int y2); > SDL_RenderFill(SDL_Rect *rect); > > You probably also want to add API functions query the current state. > I have implemented the above api for the opengl, x11, directfb and software renderers. I have also renamed *TEXTUREBLENDMODE* constants to BLENDMODE*. The unix build compiles. The windows renderer still needs to be updated, but I have no windows development machine at hand. Have a look at the x11 renderer for a sample. Vector games now run at 90% both on opengl and directfb in comparison to sdlmame's own opengl renderer. The same applies to raster games. The diff also includes a) Changed XDrawRect to XFillRect in x11 renderer b) A number of changes to fix blending and modulation issues in the directfb renderer.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 20 Dec 2008 12:00:00 +0000
parents e3affc66d963
children
rev   line source
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1 /* Simple program: Move N sprites around on the screen as fast as possible */
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2
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3 #include <stdlib.h>
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4 #include <stdio.h>
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5 #include <time.h>
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6 #include <nds.h>
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7 #include <fat.h>
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8 #include "common.h"
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9
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10 #define NUM_SPRITES 10
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11 #define MAX_SPEED 1
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12
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13 static CommonState *state;
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14 static int num_sprites;
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15 static SDL_TextureID *sprites;
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16 static SDL_bool cycle_color;
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17 static SDL_bool cycle_alpha;
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18 static int cycle_direction = 1;
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19 static int current_alpha = 0;
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20 static int current_color = 0;
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21 static SDL_Rect *positions;
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22 static SDL_Rect *velocities;
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23 static int sprite_w, sprite_h;
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24 static SDL_BlendMode blendMode = SDL_BLENDMODE_MASK;
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25 static SDL_TextureScaleMode scaleMode = SDL_TEXTURESCALEMODE_NONE;
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26
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27 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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28 static void
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29 quit(int rc)
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30 {
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31 if (sprites) {
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32 SDL_free(sprites);
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33 }
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34 if (positions) {
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35 SDL_free(positions);
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36 }
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37 if (velocities) {
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38 SDL_free(velocities);
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39 }
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40 CommonQuit(state);
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41 exit(rc);
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42 }
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43
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44 int
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45 LoadSprite(char *file)
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46 {
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47 int i;
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48 SDL_Surface *temp;
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49
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50 /* Load the sprite image */
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51 temp = SDL_LoadBMP(file);
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52 if (temp == NULL) {
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53 fprintf(stderr, "Couldn't load %s: %s", file, SDL_GetError());
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54 return (-1);
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55 }
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56 sprite_w = temp->w;
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57 sprite_h = temp->h;
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58
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59 /* Set transparent pixel as the pixel at (0,0) */
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60 if (temp->format->palette) {
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61 SDL_SetColorKey(temp, SDL_SRCCOLORKEY, *(Uint8 *) temp->pixels);
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62 }
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63
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64 /* Create textures from the image */
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65 for (i = 0; i < state->num_windows; ++i) {
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66 SDL_SelectRenderer(state->windows[i]);
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67 sprites[i] = SDL_CreateTextureFromSurface(0, temp);
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68 if (!sprites[i]) {
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69 fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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70 SDL_FreeSurface(temp);
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71 return (-1);
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72 }
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73 SDL_SetTextureBlendMode(sprites[i], blendMode);
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74 SDL_SetTextureScaleMode(sprites[i], scaleMode);
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75 }
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76 SDL_FreeSurface(temp);
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77
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78 /* We're ready to roll. :) */
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79 return (0);
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80 }
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81
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82 int
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83 LoadSprite2(const u8 * ptr, int size)
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84 {
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85 int i;
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86 SDL_Rect r = { 0, 0, 32, 32 };
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87 for (i = 0; i < state->num_windows; ++i) {
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88 SDL_SelectRenderer(state->windows[i]);
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89 sprites[i] = SDL_CreateTexture(SDL_PIXELFORMAT_ABGR1555,
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90 SDL_TEXTUREACCESS_STATIC, r.w, r.h);
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91 if (!sprites[i]) {
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92 fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
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93 return -1;
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94 }
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95 SDL_UpdateTexture(sprites[i], &r, ptr, r.w * 2);
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96 SDL_SetTextureBlendMode(sprites[i], blendMode);
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97 SDL_SetTextureScaleMode(sprites[i], scaleMode);
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98 }
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99 return 0;
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100 }
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101
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102 void
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103 MoveSprites(SDL_WindowID window, SDL_TextureID sprite)
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104 {
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105 int i, n;
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106 int window_w, window_h;
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107 SDL_Rect area, *position, *velocity;
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108
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109 SDL_SelectRenderer(window);
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110
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111 /* Query the sizes */
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112 SDL_GetWindowSize(window, &window_w, &window_h);
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113
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114 /* Cycle the color and alpha, if desired */
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115 if (cycle_color) {
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116 current_color += cycle_direction;
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117 if (current_color < 0) {
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118 current_color = 0;
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119 cycle_direction = -cycle_direction;
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120 }
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121 if (current_color > 255) {
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122 current_color = 255;
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123 cycle_direction = -cycle_direction;
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124 }
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125 SDL_SetTextureColorMod(sprite, 255, (Uint8) current_color,
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126 (Uint8) current_color);
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127 }
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128 if (cycle_alpha) {
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129 current_alpha += cycle_direction;
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130 if (current_alpha < 0) {
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131 current_alpha = 0;
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132 cycle_direction = -cycle_direction;
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133 }
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134 if (current_alpha > 255) {
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135 current_alpha = 255;
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136 cycle_direction = -cycle_direction;
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137 }
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138 SDL_SetTextureAlphaMod(sprite, (Uint8) current_alpha);
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139 }
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140
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141 /* Move the sprite, bounce at the wall, and draw */
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142 n = 0;
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143 SDL_RenderFill(0xA0, 0xA0, 0xA0, 0xFF, NULL);
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144 for (i = 0; i < num_sprites; ++i) {
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145 position = &positions[i];
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parents:
diff changeset
146 velocity = &velocities[i];
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diff changeset
147 position->x += velocity->x;
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diff changeset
148 if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
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parents:
diff changeset
149 velocity->x = -velocity->x;
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diff changeset
150 position->x += velocity->x;
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diff changeset
151 }
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diff changeset
152 position->y += velocity->y;
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diff changeset
153 if ((position->y < 0) || (position->y >= (window_h - sprite_w))) {
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parents:
diff changeset
154 velocity->y = -velocity->y;
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parents:
diff changeset
155 position->y += velocity->y;
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diff changeset
156 }
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diff changeset
157
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diff changeset
158 /* Blit the sprite onto the screen */
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159 SDL_RenderCopy(sprite, NULL, position);
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160 }
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diff changeset
161
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parents:
diff changeset
162 /* Update the screen! */
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diff changeset
163 SDL_RenderPresent();
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diff changeset
164 }
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diff changeset
165
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diff changeset
166 int
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diff changeset
167 main(int argc, char *argv[])
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diff changeset
168 {
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diff changeset
169 int i, done;
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170 SDL_Event event;
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diff changeset
171 Uint32 then, now, frames;
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172
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diff changeset
173 consoleDemoInit();
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diff changeset
174 puts("Hello world! Initializing FAT...");
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diff changeset
175 fatInitDefault();
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diff changeset
176
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diff changeset
177 /* Initialize parameters */
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diff changeset
178 num_sprites = NUM_SPRITES;
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diff changeset
179
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diff changeset
180 /* Initialize test framework */
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diff changeset
181 state = CommonCreateState(argv, SDL_INIT_VIDEO);
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diff changeset
182 if (!state) {
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diff changeset
183 return 1;
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diff changeset
184 }
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diff changeset
185
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diff changeset
186 if (!CommonInit(state)) {
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diff changeset
187 quit(2);
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diff changeset
188 }
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diff changeset
189
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diff changeset
190 /* Create the windows, initialize the renderers, and load the textures */
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diff changeset
191 sprites =
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diff changeset
192 (SDL_TextureID *) SDL_malloc(state->num_windows * sizeof(*sprites));
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diff changeset
193 if (!sprites) {
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diff changeset
194 fprintf(stderr, "Out of memory!\n");
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diff changeset
195 quit(2);
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diff changeset
196 }
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diff changeset
197 for (i = 0; i < state->num_windows; ++i) {
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198 SDL_SelectRenderer(state->windows[i]);
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199 SDL_RenderFill(0xA0, 0xA0, 0xA0, 0xFF, NULL);
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diff changeset
200 }
2750
e3affc66d963 Fixes to the NDS sprite2 test. Illustrates partially working texture-as-sprite functionality.
Darren Alton <dalton@stevens.edu>
parents: 2735
diff changeset
201 if (LoadSprite("icon.bmp") < 0) {
e3affc66d963 Fixes to the NDS sprite2 test. Illustrates partially working texture-as-sprite functionality.
Darren Alton <dalton@stevens.edu>
parents: 2735
diff changeset
202 printf("\nerrored.\n");
e3affc66d963 Fixes to the NDS sprite2 test. Illustrates partially working texture-as-sprite functionality.
Darren Alton <dalton@stevens.edu>
parents: 2735
diff changeset
203 while (1);
2735
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diff changeset
204 quit(2);
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diff changeset
205 }
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parents:
diff changeset
206
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diff changeset
207 /* Allocate memory for the sprite info */
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diff changeset
208 positions = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
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diff changeset
209 velocities = (SDL_Rect *) SDL_malloc(num_sprites * sizeof(SDL_Rect));
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diff changeset
210 if (!positions || !velocities) {
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diff changeset
211 fprintf(stderr, "Out of memory!\n");
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diff changeset
212 quit(2);
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diff changeset
213 }
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diff changeset
214 srand(time(NULL));
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diff changeset
215 if (scaleMode != SDL_TEXTURESCALEMODE_NONE) {
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diff changeset
216 sprite_w += sprite_w / 2;
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diff changeset
217 sprite_h += sprite_h / 2;
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diff changeset
218 }
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diff changeset
219 for (i = 0; i < num_sprites; ++i) {
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diff changeset
220 positions[i].x = rand() % (state->window_w - sprite_w);
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diff changeset
221 positions[i].y = rand() % (state->window_h - sprite_h);
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diff changeset
222 positions[i].w = sprite_w;
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diff changeset
223 positions[i].h = sprite_h;
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diff changeset
224 velocities[i].x = 0;
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diff changeset
225 velocities[i].y = 0;
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diff changeset
226 while (!velocities[i].x && !velocities[i].y) {
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parents:
diff changeset
227 velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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diff changeset
228 velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
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diff changeset
229 }
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diff changeset
230 }
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parents:
diff changeset
231
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diff changeset
232 /* Main render loop */
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diff changeset
233 frames = 0;
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parents:
diff changeset
234 then = SDL_GetTicks();
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diff changeset
235 done = 0;
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parents:
diff changeset
236 while (!done) {
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parents:
diff changeset
237 /* Check for events */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 ++frames;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 while (SDL_PollEvent(&event)) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 CommonEvent(state, &event, &done);
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parents:
diff changeset
241 switch (event.type) {
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parents:
diff changeset
242 case SDL_WINDOWEVENT:
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parents:
diff changeset
243 switch (event.window.event) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 case SDL_WINDOWEVENT_EXPOSED:
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 SDL_SelectRenderer(event.window.windowID);
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parents:
diff changeset
246 SDL_RenderFill(0xA0, 0xA0, 0xA0, 0xFF, NULL);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 }
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 default:
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 break;
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 }
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 }
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254 for (i = 0; i < state->num_windows; ++i) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 MoveSprites(state->windows[i], sprites[i]);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 }
204be4fc2726 Final merge of Google Summer of Code 2008 work...
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parents:
diff changeset
257 }
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parents:
diff changeset
258
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259 /* Print out some timing information */
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parents:
diff changeset
260 now = SDL_GetTicks();
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 if (now > then) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 printf("%2.2f frames per second\n",
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263 ((double) frames * 1000) / (now - then));
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 }
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 quit(0);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 return 0;
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 }
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 /* vi: set ts=4 sw=4 expandtab: */