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Fire: * Improved greyscale palette. * Fixed colour mode (palette was inverted, an d the multiplication factor was chosen in a way that the 'flames' heated up infinitely (avalanche effect). * Better adjustment to the various LCD sizes. * Tweaks and cleanup.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10902 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2006-09-08 01:26:09 +00:00
parent 7d7b704ee2
commit bd3c18e271
1 changed files with 97 additions and 103 deletions
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200
apps/plugins/fire.c
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@ -31,12 +31,13 @@ PLUGIN_HEADER
/******************************* Globals ***********************************/ /******************************* Globals ***********************************/
static struct plugin_api* rb; /* global api struct pointer */ static struct plugin_api* rb; /* global api struct pointer */
static unsigned char *gbuf;
static unsigned int gbuf_size = 0;
static unsigned char fire[LCD_HEIGHT+3][LCD_WIDTH]; static unsigned char fire[LCD_HEIGHT+3][LCD_WIDTH];
static unsigned char cooling_map[LCD_HEIGHT][LCD_WIDTH]; static unsigned char cooling_map[LCD_HEIGHT][LCD_WIDTH];
#ifndef HAVE_LCD_COLOR #ifndef HAVE_LCD_COLOR
static unsigned char *gbuf;
static unsigned int gbuf_size = 0;
static unsigned char draw_buffer[8*LCD_WIDTH]; static unsigned char draw_buffer[8*LCD_WIDTH];
#endif #endif
@ -96,94 +97,93 @@ static unsigned char draw_buffer[8*LCD_WIDTH];
#endif #endif
#define MIN_FLAME_VALUE 0 #define MIN_FLAME_VALUE 0
#if LCD_HEIGHT > 64 #define COOL_MAX (440/LCD_HEIGHT+2)
#define COOL_MAX 5
#else /* fast unsigned multiplication (16x16bit->32bit or 32x32bit->32bit,
#define COOL_MAX 8 * whichever is faster for the architecture) */
#ifdef CPU_ARM
#define FMULU(a, b) ((uint32_t) (((uint32_t) (a)) * ((uint32_t) (b))))
#else /* SH1, coldfire */
#define FMULU(a, b) ((uint32_t) (((uint16_t) (a)) * ((uint16_t) (b))))
#endif #endif
/* unsigned 16 bit multiplication (a single instruction on the SH) */
#define MULU16(a, b) ((unsigned long) \
(((unsigned short) (a)) * ((unsigned short) (b))))
#ifndef HAVE_LCD_COLOR #ifndef HAVE_LCD_COLOR
static const unsigned char palette[255]= static const unsigned char palette[256] = {
{/* logarithmic histogram equalisation */ 0, 1, 3, 4, 6, 7, 9, 10, 12, 13, 15, 16, 18, 19, 21, 22,
24, 25, 27, 28, 30, 31, 33, 34, 36, 37, 39, 40, 42, 43, 45, 46,
0, 15, 31, 50, 63, 74, 82, 89, 95, 101, 105, 110, 114, 118, 121, 48, 49, 51, 52, 54, 55, 57, 59, 60, 61, 63, 64, 66, 67, 69, 70,
124, 127, 130, 133, 135, 137, 140, 142, 144, 146, 148, 149, 151, 153, 154, 72, 73, 75, 76, 78, 79, 81, 82, 84, 85, 87, 88, 90, 91, 93, 94,
156, 158, 159, 160, 162, 163, 164, 166, 167, 168, 169, 170, 172, 173, 174, 96, 97, 99, 100, 102, 103, 105, 106, 108, 109, 111, 112, 114, 115, 117, 118,
175, 176, 177, 178, 179, 180, 180, 181, 182, 183, 184, 185, 186, 186, 187, 120, 121, 123, 124, 126, 127, 129, 130, 132, 133, 135, 136, 138, 139, 141, 142,
188, 189, 189, 190, 191, 192, 192, 193, 194, 194, 195, 196, 196, 197, 198, 144, 145, 147, 148, 150, 151, 153, 154, 156, 157, 159, 160, 162, 163, 165, 166,
198, 199, 199, 200, 201, 201, 202, 202, 203, 203, 204, 204, 205, 206, 206, 168, 169, 171, 172, 174, 175, 177, 178, 180, 181, 183, 184, 186, 187, 189, 190,
207, 207, 208, 208, 209, 209, 210, 210, 210, 211, 211, 212, 212, 213, 213, 192, 193, 195, 196, 198, 199, 201, 202, 204, 205, 207, 208, 210, 211, 213, 214,
214, 214, 215, 215, 215, 216, 216, 217, 217, 217, 218, 218, 219, 219, 219, 216, 217, 219, 220, 222, 223, 225, 226, 228, 229, 231, 232, 234, 235, 237, 238,
220, 220, 221, 221, 221, 222, 222, 222, 223, 223, 223, 224, 224, 225, 225, /* 'regular' fire doesn't exceed this value */
225, 226, 226, 226, 227, 227, 227, 228, 228, 228, 229, 229, 229, 229, 230, 240, 240, 240, 240, 240, 240, 241, 241, 241, 241, 241, 241, 242, 242, 242, 242,
230, 230, 231, 231, 231, 232, 232, 232, 232, 233, 233, 233, 234, 234, 234, 242, 242, 243, 243, 243, 243, 243, 243, 244, 244, 244, 244, 244, 244, 245, 245,
234, 235, 235, 235, 236, 236, 236, 236, 237, 237, 237, 237, 238, 238, 238, 245, 245, 245, 245, 246, 246, 246, 246, 246, 246, 247, 247, 247, 247, 247, 247,
238, 239, 239, 239, 239, 240, 240, 240, 240, 241, 241, 241, 241, 242, 242, 248, 248, 248, 248, 248, 248, 249, 249, 249, 249, 249, 249, 250, 250, 250, 250,
242, 242, 243, 243, 243, 243, 244, 244, 244, 244, 244, 245, 245, 245, 245, 250, 250, 251, 251, 251, 251, 251, 251, 252, 252, 252, 252, 252, 252, 253, 253,
246, 246, 246, 246, 246, 247, 247, 247, 247, 247, 248, 248, 248, 248, 249, 253, 253, 253, 253, 254, 254, 254, 254, 254, 254, 255, 255, 255, 255, 255, 255
249, 249, 249, 249, 250, 250, 250, 250, 250, 251, 251, 251, 251, 251, 252,
252, 252, 252, 252, 252, 253, 253, 253, 253, 253, 254, 254, 254, 254, 254
}; };
#else #else
#define L(r,g,b) LCD_RGBPACK(r,g,b) #define L(r,g,b) LCD_RGBPACK(r,g,b)
static const fb_data colorpalette[256] = { static const fb_data colorpalette[256] = {
L(248,246,211), L(248,246,203), L(248,245,196), L(248,245,189), L(247,245,182), L( 0, 0, 0), L( 5, 0, 0), L( 10, 0, 0), L( 15, 0, 0), L( 20, 0, 0),
L(248,245,174), L(248,244,167), L(248,244,160), L(248,243,153), L(247,243,145), L( 25, 0, 0), L( 30, 0, 0), L( 35, 0, 0), L( 40, 0, 0), L( 45, 0, 0),
L(248,243,138), L(247,243,131), L(247,243,125), L(248,242,117), L(248,242,110), L( 50, 0, 0), L( 55, 0, 0), L( 60, 0, 0), L( 65, 0, 0), L( 70, 0, 0),
L(247,242,102), L(248,241, 94), L(247,240, 85), L(247,241, 78), L(248,240, 70), L( 75, 0, 0), L( 80, 0, 0), L( 85, 0, 0), L( 90, 0, 0), L( 95, 0, 0),
L(247,239, 63), L(247,240, 55), L(247,239, 47), L(247,239, 39), L(247,238, 31), L(100, 0, 0), L(105, 0, 0), L(110, 0, 0), L(115, 0, 0), L(120, 0, 0),
L(247,238, 23), L(247,236, 19), L(248,232, 21), L(248,228, 22), L(248,224, 23), L(125, 0, 0), L(130, 0, 0), L(135, 0, 0), L(140, 0, 0), L(145, 0, 0),
L(248,219, 25), L(249,215, 26), L(249,211, 27), L(249,206, 29), L(249,203, 30), L(150, 0, 0), L(155, 0, 0), L(160, 0, 0), L(165, 0, 0), L(170, 0, 0),
L(249,199, 31), L(250,194, 33), L(250,190, 34), L(251,186, 35), L(251,181, 37), L(175, 0, 0), L(180, 0, 0), L(185, 0, 0), L(186, 2, 0), L(187, 5, 1),
L(252,177, 38), L(251,172, 40), L(252,168, 41), L(252,163, 42), L(253,158, 44), L(188, 6, 2), L(189, 8, 3), L(190, 10, 4), L(191, 12, 4), L(192, 14, 5),
L(253,154, 45), L(253,149, 46), L(254,145, 48), L(253,141, 50), L(253,137, 49), L(193, 15, 6), L(194, 17, 7), L(195, 19, 8), L(196, 21, 8), L(197, 22, 9),
L(253,135, 49), L(252,133, 48), L(251,130, 47), L(249,129, 47), L(248,128, 46), L(198, 24, 10), L(198, 26, 10), L(199, 28, 10), L(200, 29, 11), L(201, 32, 11),
L(247,125, 46), L(247,124, 44), L(246,122, 44), L(244,119, 43), L(243,118, 43), L(202, 34, 12), L(203, 36, 13), L(204, 39, 13), L(205, 40, 14), L(206, 42, 14),
L(242,115, 42), L(242,113, 41), L(241,112, 40), L(240,109, 39), L(238,107, 39), L(207, 43, 15), L(208, 46, 16), L(208, 48, 17), L(209, 50, 18), L(210, 51, 18),
L(237,105, 38), L(236,103, 37), L(235,101, 37), L(234, 99, 36), L(233, 97, 35), L(212, 53, 19), L(213, 55, 20), L(214, 57, 21), L(215, 59, 22), L(216, 61, 22),
L(232, 95, 34), L(231, 93, 33), L(230, 91, 32), L(229, 89, 32), L(228, 86, 31), L(217, 63, 23), L(217, 65, 24), L(218, 67, 24), L(219, 69, 25), L(220, 70, 25),
L(227, 85, 30), L(226, 82, 29), L(225, 80, 29), L(224, 78, 28), L(223, 76, 28), L(222, 72, 26), L(223, 74, 27), L(224, 76, 28), L(225, 78, 28), L(225, 80, 29),
L(222, 74, 26), L(221, 72, 26), L(220, 69, 25), L(218, 67, 24), L(217, 64, 23), L(226, 82, 29), L(227, 84, 30), L(228, 86, 31), L(228, 88, 32), L(229, 90, 32),
L(215, 60, 22), L(213, 57, 21), L(212, 54, 19), L(210, 50, 18), L(208, 47, 17), L(230, 92, 32), L(231, 94, 33), L(232, 96, 34), L(233, 98, 35), L(234, 99, 36),
L(207, 44, 16), L(205, 41, 14), L(203, 37, 13), L(202, 34, 12), L(201, 30, 11), L(235,101, 37), L(236,103, 37), L(237,105, 38), L(238,107, 39), L(240,109, 39),
L(199, 27, 10), L(197, 24, 9), L(196, 21, 8), L(194, 18, 7), L(192, 14, 5), L(240,111, 40), L(241,113, 40), L(242,114, 41), L(242,116, 42), L(243,119, 43),
L(191, 11, 4), L(189, 8, 3), L(187, 5, 1), L(186, 2, 0), L(184, 0, 0), L(245,120, 43), L(246,122, 44), L(247,124, 44), L(248,126, 46), L(248,128, 47),
L(181, 0, 0), L(178, 0, 0), L(175, 0, 0), L(172, 0, 0), L(170, 0, 0), L(249,130, 47), L(251,131, 47), L(252,133, 48), L(253,135, 49), L(253,138, 49),
L(167, 0, 0), L(165, 0, 0), L(162, 0, 0), L(159, 0, 0), L(156, 0, 0), L(253,140, 50), L(254,143, 49), L(254,145, 48), L(253,148, 47), L(253,151, 46),
L(153, 0, 0), L(152, 0, 0), L(149, 0, 0), L(146, 0, 0), L(143, 0, 0), L(253,154, 45), L(253,156, 44), L(253,158, 44), L(252,162, 42), L(252,165, 41),
L(141, 0, 0), L(138, 0, 0), L(135, 0, 0), L(132, 0, 0), L(129, 0, 0), L(252,167, 41), L(252,170, 40), L(251,173, 40), L(252,175, 38), L(252,178, 37),
L(127, 0, 0), L(126, 0, 0), L(123, 0, 0), L(120, 0, 0), L(117, 0, 0), L(251,181, 37), L(251,183, 36), L(251,186, 35), L(250,189, 34), L(250,192, 33),
L(115, 0, 0), L(112, 0, 0), L(109, 0, 0), L(106, 0, 0), L(104, 0, 0), L(250,194, 33), L(249,198, 31), L(249,200, 31), L(249,203, 30), L(249,206, 29),
L(101, 0, 0), L( 98, 0, 0), L( 95, 0, 0), L( 93, 0, 0), L( 92, 0, 0), L(249,209, 28), L(249,211, 27), L(249,214, 26), L(248,216, 25), L(248,219, 25),
L( 91, 0, 0), L( 91, 0, 0), L( 90, 0, 0), L( 89, 0, 0), L( 88, 0, 0), L(248,222, 24), L(248,224, 23), L(248,227, 22), L(248,230, 21), L(248,232, 21),
L( 88, 0, 0), L( 87, 0, 0), L( 86, 0, 0), L( 85, 0, 0), L( 84, 0, 0), L(247,236, 19), L(247,238, 23), L(247,239, 31), L(247,239, 45), L(247,240, 55),
L( 84, 0, 0), L( 82, 0, 0), L( 82, 0, 0), L( 81, 0, 0), L( 80, 0, 0), L(248,240, 68), L(247,241, 78), L(248,241, 90), L(247,242,102), L(248,242,114),
L( 80, 0, 0), L( 79, 0, 0), L( 78, 0, 0), L( 77, 0, 0), L( 76, 0, 0), L(247,243,125), L(248,243,138), L(248,243,153), L(248,244,162), L(248,245,174),
L( 76, 0, 0), L( 75, 0, 0), L( 74, 0, 0), L( 73, 0, 0), L( 72, 0, 0), /* 'regular' fire doesn't exceed this value */
L( 72, 0, 0), L( 71, 0, 0), L( 70, 0, 0), L( 69, 0, 0), L( 68, 0, 0), L(247,245,182), L(247,245,182), L(247,245,183), L(247,245,183), L(247,245,184),
L( 68, 0, 0), L( 67, 0, 0), L( 66, 0, 0), L( 65, 0, 0), L( 65, 0, 0), L(247,245,184), L(247,245,185), L(247,245,185), L(247,245,186), L(247,245,186),
L( 63, 0, 0), L( 62, 0, 0), L( 62, 0, 0), L( 61, 0, 0), L( 60, 0, 0), L(247,245,187), L(247,245,187), L(247,245,188), L(247,245,188), L(247,245,189),
L( 59, 0, 0), L( 58, 0, 0), L( 58, 0, 0), L( 58, 0, 0), L( 57, 0, 0), L(247,245,189), L(248,245,190), L(248,245,190), L(248,245,191), L(248,245,191),
L( 56, 0, 0), L( 54, 0, 0), L( 54, 0, 0), L( 53, 0, 0), L( 52, 0, 0), L(248,245,192), L(248,245,192), L(248,245,193), L(248,245,193), L(248,245,194),
L( 52, 0, 0), L( 51, 0, 0), L( 50, 0, 0), L( 49, 0, 0), L( 48, 0, 0), L(248,245,194), L(248,245,195), L(248,245,195), L(248,245,196), L(248,245,196),
L( 47, 0, 0), L( 47, 0, 0), L( 46, 0, 0), L( 45, 0, 0), L( 44, 0, 0), L(248,245,197), L(248,245,197), L(248,245,198), L(248,245,198), L(248,245,199),
L( 44, 0, 0), L( 43, 0, 0), L( 42, 0, 0), L( 42, 0, 0), L( 40, 0, 0), L(248,245,199), L(248,245,200), L(248,245,200), L(248,245,201), L(248,245,201),
L( 40, 0, 0), L( 39, 0, 0), L( 38, 0, 0), L( 38, 0, 0), L( 37, 0, 0), L(248,245,202), L(248,245,202), L(248,245,203), L(248,245,203), L(248,245,204),
L( 36, 0, 0), L( 35, 0, 0), L( 34, 0, 0), L( 33, 0, 0), L( 32, 0, 0), L(248,245,204), L(248,245,205), L(248,245,205), L(248,246,206), L(248,246,206),
L( 32, 0, 0), L( 31, 0, 0), L( 30, 0, 0), L( 30, 0, 0), L( 28, 0, 0), L(248,246,207), L(248,246,207), L(248,246,208), L(248,246,208), L(248,246,209),
L( 28, 0, 0), L( 27, 0, 0), L( 26, 0, 0), L( 25, 0, 0), L( 25, 0, 0), L(248,246,209), L(248,246,210), L(248,246,210), L(248,246,211), L(248,246,211),
L( 23, 0, 0), L( 23, 0, 0), L( 22, 0, 0), L( 21, 0, 0), L( 21, 0, 0), L(248,246,212), L(248,246,212), L(248,246,213), L(248,246,213), L(248,246,214),
L( 20, 0, 0), L( 19, 0, 0), L( 18, 0, 0), L( 18, 0, 0), L( 16, 0, 0), L(248,246,214), L(248,246,215), L(248,246,215), L(248,246,216), L(248,246,216),
L( 16, 0, 0), L( 15, 0, 0), L( 14, 0, 0), L( 14, 0, 0), L( 13, 0, 0), L(248,246,217), L(248,246,217), L(248,246,218), L(248,246,218), L(248,246,219),
L( 12, 0, 0), L( 11, 0, 0), L( 10, 0, 0), L( 9, 0, 0), L( 9, 0, 0), L(248,246,219), L(248,246,220), L(248,246,220), L(248,246,221), L(248,246,221),
L( 8, 0, 0), L( 7, 0, 0), L( 6, 0, 0), L( 5, 0, 0), L( 5, 0, 0), L(248,246,222), L(248,246,222), L(248,246,223), L(248,246,223), L(248,246,224),
L( 4, 0, 0), L( 3, 0, 0), L( 3, 0, 0), L( 2, 0, 0), L( 1, 0, 0), L(248,246,224), L(248,246,225), L(248,246,225), L(248,246,226), L(248,246,226),
L( 0, 0, 0) L(248,246,227), L(248,246,227), L(248,246,228), L(248,246,228), L(248,246,229),
L(248,246,229)
}; };
#endif #endif
@ -230,7 +230,7 @@ static inline void fire_generate(int mult, int flames_type, bool moving)
+ ptr[2*LCD_WIDTH] /* fire[y+2][x] */ + ptr[2*LCD_WIDTH] /* fire[y+2][x] */
+ ptr[LCD_WIDTH+1] /* fire[y+1][x+1] */ + ptr[LCD_WIDTH+1] /* fire[y+1][x+1] */
+ ptr[3*LCD_WIDTH]; /* fire[y+3][x] */ + ptr[3*LCD_WIDTH]; /* fire[y+3][x] */
pixel_value = MULU16(pixel_value, mult) >> 10; pixel_value = FMULU(pixel_value, mult) >> 10;
cooling_value = *cool++; cooling_value = *cool++;
if (cooling_value <= pixel_value) if (cooling_value <= pixel_value)
@ -246,13 +246,14 @@ static inline void fire_generate(int mult, int flames_type, bool moving)
break; break;
case 1: case 1:
mult -= 2;
do do
{ {
pixel_value = ptr[LCD_WIDTH-1] /* fire[y+1][x-1] */ pixel_value = ptr[LCD_WIDTH-1] /* fire[y+1][x-1] */
+ ptr[LCD_WIDTH] /* fire[y+1][x] */ + ptr[LCD_WIDTH] /* fire[y+1][x] */
+ ptr[LCD_WIDTH+1] /* fire[y+1][x+1] */ + ptr[LCD_WIDTH+1] /* fire[y+1][x+1] */
+ ptr[2*LCD_WIDTH]; /* fire[y+2][x] */ + ptr[2*LCD_WIDTH]; /* fire[y+2][x] */
pixel_value = MULU16(pixel_value, mult) >> 10; pixel_value = FMULU(pixel_value, mult) >> 10;
cooling_value = *cool++; cooling_value = *cool++;
if (cooling_value <= pixel_value) if (cooling_value <= pixel_value)
@ -296,10 +297,10 @@ static inline void fire_draw(void)
fb_data* end = rb->lcd_framebuffer+(LCD_WIDTH*LCD_HEIGHT); fb_data* end = rb->lcd_framebuffer+(LCD_WIDTH*LCD_HEIGHT);
unsigned char* src = &fire[0][0]; unsigned char* src = &fire[0][0];
while (dest < end) do
{ *dest++ = colorpalette[*src++];
*(dest++) = colorpalette[*(src++)]; while (dest < end);
}
rb->lcd_update(); rb->lcd_update();
#endif #endif
} }
@ -324,35 +325,28 @@ void cleanup(void *parameter)
int main(void) int main(void)
{ {
int shades, button; int button;
#ifdef HAVE_LCD_COLOR
int mult = 267;
#else
int mult = 261; int mult = 261;
#endif
int flames_type=0; int flames_type=0;
bool moving=true; bool moving=true;
#ifndef HAVE_LCD_COLOR
int shades;
/* get the remainder of the plugin buffer */ /* get the remainder of the plugin buffer */
gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size); gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
#ifdef HAVE_LCD_COLOR
shades = 256;
#else
shades = gray_init(rb, gbuf, gbuf_size, false, LCD_WIDTH, LCD_HEIGHT, shades = gray_init(rb, gbuf, gbuf_size, false, LCD_WIDTH, LCD_HEIGHT,
32, 2<<8, NULL) + 1; 32, 1<<8, NULL) + 1;
if(shades <= 1) if(shades <= 1)
{ {
rb->splash(HZ, true, "not enough memory"); rb->splash(HZ, true, "not enough memory");
return PLUGIN_ERROR; return PLUGIN_ERROR;
} }
/* switch on grayscale overlay */
gray_show(true);
#endif #endif
#ifdef HAVE_ADJUSTABLE_CPU_FREQ #ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(true); rb->cpu_boost(true);
#endif
#ifndef HAVE_LCD_COLOR
/* switch on grayscale overlay */
gray_show(true);
#endif #endif
rb->memset(&fire[0][0], 0, sizeof(fire)); rb->memset(&fire[0][0], 0, sizeof(fire));
tab_init_rand(&cooling_map[0][0], LCD_HEIGHT*LCD_WIDTH, COOL_MAX); tab_init_rand(&cooling_map[0][0], LCD_HEIGHT*LCD_WIDTH, COOL_MAX);
@ -369,7 +363,7 @@ int main(void)
#ifdef FIRE_RC_QUIT #ifdef FIRE_RC_QUIT
case FIRE_RC_QUIT : case FIRE_RC_QUIT :
#endif #endif
case(FIRE_QUIT): case (FIRE_QUIT):
cleanup(NULL); cleanup(NULL);
return PLUGIN_OK; return PLUGIN_OK;
break; break;