Created
June 29, 2011 15:57
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Save biomood/1054158 to your computer and use it in GitHub Desktop.
Display an animating sprite using the Gameduino
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static PROGMEM prog_uchar alien_sprite_img[] = { | |
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}; | |
static PROGMEM prog_uchar alien_sprite_img2[] = { | |
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}; |
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#include <SPI.h> | |
#include <GD.h> | |
#include "alien_sprite.h" | |
struct sprite { | |
int no; | |
int x; | |
int y; | |
int anim; | |
byte rot; | |
}; | |
struct sprite spr; | |
byte spritePage = 0; | |
int16_t animTimer = 0; | |
void setup() { | |
// allow for setup | |
delay(250); | |
// init struct | |
spr.no = 0; | |
spr.x = 100; | |
spr.y = 100; | |
spr.anim = 0; | |
spr.rot = 0; | |
GD.begin(); | |
// load character set | |
GD.ascii(); | |
// display title | |
GD.putstr(0, 1, "Sprite Test 01"); | |
// set background to black | |
unsigned int bg_colour = RGB(0, 0, 0); | |
GD.wr16(BG_COLOR, bg_colour); | |
// set the sprite page | |
GD.wr(SPR_PAGE, spritePage); | |
// set up PALETTE4A | |
GD.wr16(PALETTE4A, RGB(255, 0, 0)); | |
GD.wr16(PALETTE4A + (1<<1), RGB(0, 255, 0)); | |
GD.wr16(PALETTE4A + (2<<1), RGB(0, 0, 255)); | |
// pixel with value of 3 will be transparent | |
GD.wr16(PALETTE4A + (3<<1), TRANSPARENT); | |
// copy the sprite images into RAM | |
GD.copy(RAM_SPRIMG, alien_sprite_img, sizeof(alien_sprite_img)); | |
GD.copy(RAM_SPRIMG+256, alien_sprite_img2, sizeof(alien_sprite_img2)); | |
} | |
void loop() { | |
// wait for vertical blanking | |
GD.waitvblank(); | |
animTimer++; | |
// change image after approx 0.5 seconds | |
if (animTimer==50) { | |
animTimer = 0; | |
// flip the animation | |
spr.anim = spr.anim ^ 1; | |
} | |
// set the sprite control word | |
GD.sprite(spr.no, spr.x, spr.y, spr.anim, 8); | |
} |
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