Communauté PortableDev

I think ">=" is correct!

The original image has 9 sprites: 3 for down, 3 for up and 3 for right or left. So, the indexes of "sprTiles" array are:

> 0, 1, 2 for down
> 3, 4, 5 for up
> 6, 7, 8 for right/left

if(monster.anim_frame >= FRAMES_PER_ANIMATION) monster.anim_frame = 0;

When "monster.anim_frame" has the value 3, it must be set to zero because we do not use "monster.anim_frame" equals to 3.

My project using sprites with 8x8 pixels is fine. But my project using sprites with 32x32 still has a small problem.

The last picture of the character moving to the left or to the right (sprTiles[8]) is now showed.

Maybe the last value of "sprTiles" array is wrong...


char sprTiles[9]={0,4,8, 12,64,68, 72,76,128};


What's the correct last value of this array? I say it again: each sprite has 32 x 32 pixels.

Complete code of "AnimatedSprite32x32.c" above:


#include <snes.h>

extern char gfxpsrite, gfxpsrite_end;
extern char palsprite;

#define FRAMES_PER_ANIMATION 3 // 3 sprites per direction

//---------------------------------------------------------------------
// The Monster sprite
//---------------------------------------------------------------------
typedef struct
{
short x, y;
int gfx_frame;
int state;
int anim_frame;
int flipx;
} Monster;

//---------------------------------------------------------------------
// The state of the sprite (which way it is walking)
//---------------------------------------------------------------------
enum SpriteState {W_DOWN = 0, W_UP = 1, W_RIGHT = 2,  W_LEFT = 2};

//---------------------------------------------------------------------
// Screen dimentions
//---------------------------------------------------------------------
enum {SCREEN_TOP = 0, SCREEN_BOTTOM = 224, SCREEN_LEFT = 0, SCREEN_RIGHT = 256};

char sprTiles[9]={0,4,8, 12,64,68, 72,76,128};

//---------------------------------------------------------------------------------
int main(void) {
unsigned short pad0,i;
Monster monster = {100,100};

    // Initialize SNES
consoleInit();

// Init Sprites gfx and palette with default size of 16x16
oamInitGfxSet(&gfxpsrite, (&gfxpsrite_end-&gfxpsrite), &palsprite, 0, 0x4000, OBJ_SIZE32);

// Define sprites parameters
oamSet(0,  monster.x, monster.y, 0, 0, 0, 0, 0);
oamSetEx(0, OBJ_SMALL, OBJ_SHOW);

// Now Put in 16 color mode and disable all backgrounds
setMode(BG_MODE1,0); bgSetDisable(0); bgSetDisable(1); bgSetDisable(2);

// Wait VBL 'and update sprites too ;-) )
WaitForVBlank();

// Wait for nothing :P
while(1) {
// Refresh pad values
scanPads();

// Get current #0 pad
pad0 = padsCurrent(0);

if (pad0) {
// Update sprite with current pad
if(pad0 & KEY_UP) {
if(monster.y >= SCREEN_TOP) monster.y--;
monster.state = W_UP;
monster.flipx = 0;
}
if(pad0 & KEY_LEFT) {
if(monster.x >= SCREEN_LEFT) monster.x--;
monster.state = W_LEFT;
monster.flipx = 1;
}
if(pad0 & KEY_RIGHT) {
if(monster.x <= SCREEN_RIGHT) monster.x++;
monster.state = W_LEFT;
monster.flipx = 0;
}
if(pad0 & KEY_DOWN) {
if(monster.y <= SCREEN_BOTTOM) monster.y++;
monster.state = W_DOWN;
monster.flipx = 0;
}
monster.anim_frame++;
if(monster.anim_frame >= FRAMES_PER_ANIMATION) monster.anim_frame = 0;
}

// Now, get current sprite in current animation
monster.gfx_frame = sprTiles[monster.anim_frame + monster.state*FRAMES_PER_ANIMATION ];

oamSet(0,  monster.x, monster.y, 3, monster.flipx, 0, monster.gfx_frame, 0);

// Wait VBL 'and update sprites too ;-) )
WaitForVBlank();
}
return 0;
}



Thank you, Alekmaul!

I am trying it, but my program doesn't work.

I am changing "AnimatedSprite" project to "TwoAnimatedSprites". In the image "sprites.bmp", I have set new colors in the palette: color #16 is magenta (equal to color #0) and I have added new colors from #17 to #31.

Lines 63 to 65 in Makefile changed (I have changed "pc16 -po16" to "pc256 -po256" in line 65):


sprites.pic: sprites.bmp
@echo convert bitmap ... $(notdir $@)
$(GFXCONV) -gs16 -pc256 -po256 -n $<


And my complete "TwoAnimatedSprites.c" below:


/*---------------------------------------------------------------------------------


Animated Sprite demo
-- alekmaul

Sprite from Stephen "Redshrike" Challener), http://opengameart.org

---------------------------------------------------------------------------------*/
#include <snes.h>

extern char gfxpsrite, gfxpsrite_end;
extern char palsprite;

#define FRAMES_PER_ANIMATION 3 // 3 sprites per direction

//---------------------------------------------------------------------
// The Monster sprite
//---------------------------------------------------------------------
typedef struct
{
short x, y;
int gfx_frame;
int state;
int anim_frame;
int flipx;
} Monster;

//---------------------------------------------------------------------
// The state of the sprite (which way it is walking)
//---------------------------------------------------------------------
enum SpriteState {W_DOWN = 0, W_UP = 1, W_RIGHT = 2,  W_LEFT = 2};

//---------------------------------------------------------------------
// Screen dimentions
//---------------------------------------------------------------------
enum {SCREEN_TOP = 0, SCREEN_BOTTOM = 224, SCREEN_LEFT = 0, SCREEN_RIGHT = 256};

char sprTiles[9]={0,2,4, 6,8,10, 12,14,32};  // Remeber that sprites are interleave with 128 pix width,

//---------------------------------------------------------------------------------
int main(void) {
unsigned short pad0,i;
Monster monster = {100,100};
Monster monster2 = {150,150}; // NEW LINE

    // Initialize SNES
consoleInit();

// Init Sprites gfx and palette with default size of 16x16
oamInitGfxSet(&gfxpsrite, (&gfxpsrite_end-&gfxpsrite), &palsprite, 0, 0x4000, OBJ_SIZE16);

// Define sprites parameters
oamSet(0,  monster.x, monster.y, 0, 0, 0, 0, 0);
oamSetEx(0, OBJ_SMALL, OBJ_SHOW);

oamSet(16,  monster2.x, monster2.y, 0, 0, 0, 0, 16);  // NEW LINE
oamSetEx(16, OBJ_SMALL, OBJ_SHOW);  // NEW LINE

// Now Put in 16 color mode and disable all backgrounds
setMode(BG_MODE1,0); bgSetDisable(0); bgSetDisable(1); bgSetDisable(2);

// Wait VBL 'and update sprites too ;-) )
WaitForVBlank();

// Wait for nothing :P
while(1) {
// Refresh pad values
scanPads();

// Get current #0 pad
pad0 = padsCurrent(0);

if (pad0) {
// Update sprite with current pad
if(pad0 & KEY_UP) {
if(monster.y >= SCREEN_TOP) monster.y--;
monster.state = W_UP;
monster.flipx = 0;
if(monster2.y >= SCREEN_TOP) monster2.y--;  // NEW LINE
monster2.state = W_UP;  // NEW LINE
monster2.flipx = 0;  // NEW LINE
}
if(pad0 & KEY_LEFT) {
if(monster.x >= SCREEN_LEFT) monster.x--;
monster.state = W_LEFT;
monster.flipx = 1;
if(monster2.x >= SCREEN_LEFT) monster2.x--;  // NEW LINE
monster2.state = W_LEFT;  // NEW LINE
monster2.flipx = 1;  // NEW LINE
}
if(pad0 & KEY_RIGHT) {
if(monster.x <= SCREEN_RIGHT) monster.x++;
monster.state = W_LEFT;
monster.flipx = 0;
if(monster2.x <= SCREEN_RIGHT) monster2.x++;  // NEW LINE
monster2.state = W_LEFT;  // NEW LINE
monster2.flipx = 0;  // NEW LINE
}
if(pad0 & KEY_DOWN) {
if(monster.y <= SCREEN_BOTTOM) monster.y++;
monster.state = W_DOWN;
monster.flipx = 0;
if(monster2.y <= SCREEN_BOTTOM) monster2.y++;  // NEW LINE
monster2.state = W_DOWN;  // NEW LINE
monster2.flipx = 0;  // NEW LINE
}
monster.anim_frame++;
if(monster.anim_frame >= FRAMES_PER_ANIMATION) monster.anim_frame = 0;
monster2.anim_frame++;  // NEW LINE
if(monster2.anim_frame >= FRAMES_PER_ANIMATION) monster2.anim_frame = 0;  // NEW LINE
}

// Now, get current sprite in current animation
monster.gfx_frame = sprTiles[monster.anim_frame + monster.state*FRAMES_PER_ANIMATION ];
oamSet(0,  monster.x, monster.y, 3, monster.flipx, 0, monster.gfx_frame, 0);

monster2.gfx_frame = sprTiles[monster2.anim_frame + monster2.state*FRAMES_PER_ANIMATION ];  // NEW LINE
oamSet(16,  monster2.x, monster2.y, 3, monster2.flipx, 0, monster2.gfx_frame, 16);  // NEW LINE

// Wait VBL 'and update sprites too ;-) )
WaitForVBlank();
}
return 0;
}



I have NOT changed "date.asm" and "hdr.asm".

How can I draw the same sprite two times in the same screen but using different colors? For example, in a fight "Ryu (white clothes) vs. Ryu (dark clothes)" in "Street Fighter II" or in a sport game (Lakers with yellow uniform and Celtics with green uniform). Considering that two objects have the same sprite, can I associate the first object to a palette and the second object to another different palette?

Alekmaul, thank you very much!

My both picture files have the name "sprites.bmp". Here I changed the name to "sprites8x8" and "sprites32x32". The forum doesn't accept "bmp" files, so I have converted them to "png".

In fact, all the colors of my pictures are wrong.

I think I don't know how to change the line 65 of Makefile to make the right conversion of images of 8x8 pixels and 32x32 pixels...

Original "Makefile" (line 65)

$(GFXCONV) -gs16 -pc16 -po16 -n $<


As I have written before, I have only changed the first argument (-gs16 changed to -gs8 and -gs32) of $(GFXCONV) in Makefile.

Please, what should I do? Should I make other changes besides Makefile?

I'm trying to convert "AnimatedSprite" project. The original project uses sprites with 16x16 pixels. I would like to make a new version using sprites with 8x8 (project "AnimatedSprite8x8") and another new version using sprites with 32x32 (project "AnimatedSprite32x32").

The original file "AnimatedSprite.c" can be seen at:
http://www.portabledev.com/media/SNES/PVSnesLib/doc/a00010.html

I have copied all the files of the original project to the other two new projects.

But there are some differences:

- The file "AnimatedSprite.c" was renamed: "AnimatedSprite8x8.c" and "AnimatedSprite32x32.c"

- The dimensions of the original file image ("sprites.bmp") are: 16x144 pixels. The new versions of this files have the following dimensions: 8x72 pixels (for AnimatedSprite8x8) and 32x288 (for AnimatedSprite32x32).

Then, I have changed some lines of the code:

AnimatedSprite.c (line 39)
char sprTiles[9]={0,2,4, 6,8,10, 12,14,32};  // Remeber that sprites are interleave with 128 pix width,

AnimatedSprite8x8.c (line 39)
char sprTiles[9]={0,1,2, 3,4,5, 6,7,8};

AnimatedSprite32x32.c (line 39)
char sprTiles[9]={0,4,8, 12,64,68, 72,76,128};


AnimatedSprite.c (line 50)
oamInitGfxSet(&gfxpsrite, (&gfxpsrite_end-&gfxpsrite), &palsprite, 0, 0x4000, OBJ_SIZE16);

AnimatedSprite8x8.c (line 50)
oamInitGfxSet(&gfxpsrite, (&gfxpsrite_end-&gfxpsrite), &palsprite, 0, 0x4000, OBJ_SIZE8);

AnimatedSprite32x32.c (line 50)
oamInitGfxSet(&gfxpsrite, (&gfxpsrite_end-&gfxpsrite), &palsprite, 0, 0x4000, OBJ_SIZE32);


More changes in Makefile...

Makefile - AnimatedSprite (lines 63 to 65)

sprites.pic: sprites.bmp
@echo convert bitmap ... $(notdir $@)
$(GFXCONV) -gs16 -pc16 -po16 -n $<



Makefile - AnimatedSprite8x8 (lines 63 to 65)

sprites.pic: sprites.bmp
@echo convert bitmap ... $(notdir $@)
$(GFXCONV) -gs8 -pc16 -po16 -n $<



Makefile - AnimatedSprite32x32 (lines 63 to 65)

sprites.pic: sprites.bmp
@echo convert bitmap ... $(notdir $@)
$(GFXCONV) -gs32 -pc16 -po16 -n $<


When I run "AnimatedSprite8x8" and "AnimatedSprite32x32" the joystick moves the character, but the transparency effect does NOT work. The character is inside a visible square area.

Please, what have I forgotten?