src/sgespritegroup.c

/*
 * Copyright (c) 2007 Heiko Irrgang
 *
 * The license and distribution terms for this file may be
 * found in the file COPYING in this distribution or at
 * http://93-interactive.com/cms/products/software/sdl-game-engine/license/
 */

#include <sge.h>

SGESPRITEGROUP *sgeSpriteGroupNew(void) {
        SGESPRITEGROUP *ret;
        sgeNew(ret, SGESPRITEGROUP);
        ret->sprite=sgeArrayNew();
        return ret;
}

static void sgeSpriteGroupDestroySpriteHelper(Uint32 id, void *data) {
        SGESPRITE *s=(SGESPRITE *)data;
        if (s!=NULL) sgeSpriteDestroy(s);
}

void sgeSpriteGroupDestroy(SGESPRITEGROUP *g) {
        sgeArrayForEach(g->sprite, sgeSpriteGroupDestroySpriteHelper);
        sgeArrayDestroy(g->sprite);
        sgeFree(g);
}

void sgeSpriteGroupAddSprite(SGESPRITEGROUP *g, SGESPRITE *s) {
        sgeArrayAdd(g->sprite,s);
}

int sgeSpriteGroupCollide(SGESPRITEGROUP *g, SGESPRITEGROUP *cg) {
        if (sgeSpriteGroupGetCollider(g,cg)==NULL) return 0;
        return 1;
}

int sgeSpriteGroupCollideSprite(SGESPRITEGROUP *g, SGESPRITE *s) {
        if (sgeSpriteGroupGetColliderSprite(g,s)==NULL) return 0;
        return 1;
}

SGESPRITE *sgeSpriteGroupGetCollider(SGESPRITEGROUP *g, SGESPRITEGROUP *cg) {
        SGESPRITE *tmpa;
        int i;
        for (i=0;i<g->sprite->numberOfElements;i++) {
                tmpa=(SGESPRITE *)sgeArrayGet(g->sprite,i);
                if (sgeSpriteGroupCollideSprite(cg, tmpa)) return tmpa;
        }
        return NULL;
}

SGESPRITE *sgeSpriteGroupGetColliderSprite(SGESPRITEGROUP *g, SGESPRITE *s) {
        SGESPRITE *tmpa;
        int i;
        for (i=0;i<g->sprite->numberOfElements;i++) {
                tmpa=(SGESPRITE *)sgeArrayGet(g->sprite,i);
                if (sgeSpriteCollide(tmpa,s)) return tmpa;
        }
        return NULL;
}

void sgeSpriteGroupDraw(SGESPRITEGROUP *g) {
        SGESPRITE *tmpa;
        int i;
        for (i=0;i<g->sprite->numberOfElements;i++) {
                tmpa=(SGESPRITE *)sgeArrayGet(g->sprite,i);
                sgeSpriteDraw(tmpa, screen);
        }
}

void sgeSpriteGroupDrawRelative(SGESPRITEGROUP *g, int camx, int camy) {
        SGESPRITE *tmpa;
        int i;
        for (i=0;i<g->sprite->numberOfElements;i++) {
                tmpa=(SGESPRITE *)sgeArrayGet(g->sprite,i);
                sgeSpriteDrawXY(tmpa, tmpa->x-camx, tmpa->y-camy, screen);
        }
}