I don't mean to highjack this thread, but I thought this code might be helpful. I've been messing round with palettes and sprites trying to figure out how they are set in memory for each sprite. When I needed multiple sprites of the same image or animation, only baseSprite is incremented. Each multiple sprite uses the same palette or palettes.
There might be a better way to do this, but this is what is working right now. I did notice that buildchar outputs the sprite and palette count, so you could input the counts manually.
//Load images
currentBaseSprite = 16; //set sprite locations
currentBasePalette = 16; //set pal location
pictureInit(&layerOne, &Stars,currentBaseSprite,currentBasePalette,0,0,FLIP_NONE);
palJobPut(currentBasePalette, Stars.palInfo->count,Stars.palInfo->data);
//update basepalette and basesprite
currentBaseSprite += Stars.tileWidth;
currentBasePalette += Stars.palInfo->count;
pictureInit(&testPlayer.pic, &playerShip, currentBaseSprite, currentBasePalette, testPlayer.x, testPlayer.y, FLIP_NONE); //copy pic to mem
palJobPut(currentBasePalette, playerShip.palInfo->count, playerShip.palInfo->data); //copy pal to mem
//populate player data
testPlayer.x = 0; //player x y
testPlayer.y = 224/2 + 16;
testPlayer.width = 20;
testPlayer.height = 20;
testPlayer.spriteNum = currentBaseSprite;
change_sprite_zoom(currentBaseSprite, 10, 10*16, 2);
oldX = testPlayer.x;
oldY = testPlayer.y;
currentBaseSprite += playerShip.tileWidth;
currentBasePalette += playerShip.palInfo->count;
for(ii = 0; ii < ENEMY_MAX; ii++)
{
enemy[ii].x = routine.wayPoint[ii].x;
enemy[ii].y = routine.wayPoint[ii].y;
enemy[ii].width = (ORANGE_ENEMY5.tileWidth * 16) * (10/16);
enemy[ii].height = (ORANGE_ENEMY5.tileHeight * 16) * (10/16);
enemy[ii].xVel = -2;
enemy[ii].yVel = 1;
enemy[ii].alive = 1;
enemy[ii].hits = routine.attack.power;
enemy[ii].shotAlive = 0;
enemy[ii].shotXorg = 0;
enemy[ii].shotYorg = 15;
enemy[ii].randShotTime = rand()%100;
change_sprite_zoom(currentBaseSprite, 10, 10*16, 2);
//enemy picture
pictureInit(&enemy[ii].pic, &ORANGE_ENEMY5, currentBaseSprite, currentBasePalette, enemy[ii].x, enemy[ii].y, FLIP_NONE); //copy player
palJobPut(currentBasePalette, ORANGE_ENEMY5.palInfo->count, ORANGE_ENEMY5.palInfo->data); //copy pal to mem
//inc sprite data
currentBaseSprite += ORANGE_ENEMY5.tileWidth;//increment sprite location
//next enemy
}
currentBasePalette += ORANGE_ENEMY5.palInfo->count; //increment pal location
//setup player shot pictures
for(ii = 0; ii < PLAYER_MAX_SHOTS; ii++)
{
shot[ii].x = 400;
shot[ii].y = 400;
shot[ii].alive = 0;
pictureInit(&shot[ii].pic, &playerShot, currentBaseSprite, currentBasePalette, shot[ii].x, shot[ii].y, FLIP_NONE);
currentBaseSprite += playerShot.tileWidth;
}
palJobPut(currentBasePalette, playerShot.palInfo->count, playerShot.palInfo->data);
currentBasePalette += playerShot_Palettes.count;
//setup enemy shot pictures
for(ii = 0; ii < PLAYER_MAX_SHOTS; ii++)
{
eshot[ii].x = 400;
eshot[ii].y = 400;
eshot[ii].alive = 0;
eshot[ii].enemyNum = -1;
pictureInit(&eshot[ii].pic, &enemyLaser, currentBaseSprite, currentBasePalette, eshot[ii].x, eshot[ii].y, FLIP_NONE);
change_sprite_zoom(currentBaseSprite, 7, 7*16, 1);
currentBaseSprite += enemyLaser.tileWidth;
}
palJobPut(currentBasePalette, enemyLaser.palInfo->count, enemyLaser.palInfo->data);
currentBasePalette += enemyLaser.palInfo->count;
//populate explosions
for(ii = 0; ii < EXPLOSION_MAX; ii++)
{
explosionSpr[ii].x = 400;
explosionSpr[ii].y = 0;
explosionSpr[ii].xVel = 0.25;
explosionSpr[ii].yVel = 0.5; //amount to fall
explosionSpr[ii].alive = 0;
explosionSpr[ii].remove = 0;
explosionSpr[ii].currentBaseSprite = currentBaseSprite;
explosionSpr[ii].currentBasePalette = currentBasePalette;
aSpriteInit(&explosionSpr[ii].spr,&explosion,currentBaseSprite,currentBasePalette,
explosionSpr[ii].x,explosionSpr[ii].y,0,FLIP_NONE,AS_FLAGS_DEFAULT);
//explosionSpr[ii].spr.stepNum = 0;
currentBaseSprite += explosion.maxWidth * explosion.frameCount;
}
palJobPut(currentBasePalette,explosion.palInfo->count, explosion.palInfo->data);
currentBasePalette += explosion.palInfo->count;
Fichier joint : 
