#173589 - relminator - Sun Apr 18, 2010 9:17 am
It's in Framebuffer mode. Anyway i could combine this with standard mode 5 screens?
Source + executable:
http://www.file-pasta.com/file/0/plasma.zip
_________________
http://rel.betterwebber.com
Source + executable:
http://www.file-pasta.com/file/0/plasma.zip
| Code: |
|
/* NDS Translucent Plasma Relminator http://rel.betterwebber.com */ #include <nds.h> #include <stdio.h> #include <math.h> // some sine LUTs u8 lsin1[2048]; u8 lsin2[2048]; u8 lsin3[2048]; // RGB palette u16 pal[256]; int main(void) { // constant sine divisor const u8 K1 = 32; const u8 K2 = 12; const u8 K3 = 28; // maximum values our dynamic plasmas can move u16 KSIN1 = u8(K1 *(360/57.3f)); u16 KSIN2 = u8(K2 *(360/57.3f)); u16 KSIN3 = u8(K3 *(360/57.3f)); // precalculate our luts for (int i = 0; i< ((2048) - 1); i++) { lsin1[i] = sin(i/(float)K1) * 32+32; lsin2[i] = sin(i/(float)K2) * 16+16; lsin3[i] = sin(i/(float)K3) * 20+20; } // generate our 256 color palette for (int i=0; i<256; i++) { u8 r = (u8)(abs(int(16 - 15 * sin(i * M_PI / 16.0f)))); u8 g = (u8)(abs(int(16 - 15 * sin(i * M_PI / 12.0f)))); u8 b = (u8)(abs(int(16 - 15 * sin(i * M_PI / 18.0f)))); pal[i] = RGB15(r,g,b); } irqInit(); irqEnable(IRQ_VBLANK); //initialize the DS Dos-like functionality consoleDemoInit(); iprintf("\x1b[1;1HTranslucent Plasma!"); iprintf("\x1b[2;1HFramebuffer madness!"); iprintf("\x1b[3;1HRelsoft"); iprintf("\x1b[4;1Hhttp://rel.betterwebber.com"); iprintf("\x1b[6;1HAnya Therese B. Lope"); //set frame buffer mode 0 videoSetMode(MODE_FB0); //enable VRAM A for writting by the cpu and use //as a framebuffer by video hardware vramSetBankA(VRAM_A_LCD); u8 rot; // translucent factor u16 counter =0; // frame counter u16 a = 0, b = 0, ct = 0; // movement deltas u16 c; // palette color index while(1) { // dynamically move our plasmas a= (a + 1) % (KSIN1 + 1); b = (b + 1) % (KSIN2 + 1); ct = (ct + 1) % (KSIN3 + 1); // offset 2nd plasma by a factor of 64 * 2 or (-64 to 64) rot = 64 * (((counter & 1) == 1) | 1); // inc frame counter++; //write to vram directly short unsigned int *vram_offset = VRAM_A; for (int ya = 0; ya<SCREEN_HEIGHT; ya++) { for (int xa = 0; xa <SCREEN_WIDTH-1; xa++) { rot = -rot; // draw plasmas every other pixel // calculate colors c = (lsin1[xa + a + rot] + lsin2[ya + b + rot] +lsin3[1024+xa + ya - ct]); c = (lsin1[xa + a + rot+c] + lsin2[ya + b + rot+c] +lsin3[1024+xa + ya - ct+c]); // write to vram *vram_offset++ = pal[c]; } vram_offset++; // magic } swiWaitForVBlank(); } return 0; } |
_________________
http://rel.betterwebber.com