void GrafxDrawBackground(
GraphicsDevice *g, DrawBuffer *buffer,
HSV tint, Vec2i pos, GrafxDrawExtra *extra)
{
Vec2i v;
DrawBufferSetFromMap(buffer, &gMap, pos, X_TILES);
DrawBufferDraw(buffer, Vec2iZero(), extra);
for (v.y = 0; v.y < g->cachedConfig.Res.y; v.y++)
{
for (v.x = 0; v.x < g->cachedConfig.Res.x; v.x++)
{
DrawPointTint(g, v, tint);
}
}
memcpy(g->bkg, g->buf, GraphicsGetMemSize(&g->cachedConfig));
memset(g->buf, 0, GraphicsGetMemSize(&g->cachedConfig));
}
void DrawShadow(GraphicsDevice *device, Vec2i pos, Vec2i size)
{
Vec2i drawPos;
HSV tint = { -1.0, 1.0, 0.0 };
if (!ConfigGetBool(&gConfig, "Game.Shadows"))
{
return;
}
for (drawPos.y = pos.y - size.y; drawPos.y < pos.y + size.y; drawPos.y++)
{
if (drawPos.y >= device->clipping.bottom)
{
break;
}
if (drawPos.y < device->clipping.top)
{
continue;
}
for (drawPos.x = pos.x - size.x; drawPos.x < pos.x + size.x; drawPos.x++)
{
// Calculate value tint based on distance from center
Vec2i scaledPos;
int distance2;
if (drawPos.x >= device->clipping.right)
{
break;
}
if (drawPos.x < device->clipping.left)
{
continue;
}
scaledPos.x = drawPos.x;
scaledPos.y = (drawPos.y - pos.y) * size.x / size.y + pos.y;
distance2 = DistanceSquared(scaledPos, pos);
// Maximum distance is x, so scale distance squared by x squared
tint.v = CLAMP(distance2 * 1.0 / (size.x*size.x), 0.0, 1.0);
DrawPointTint(device, drawPos, tint);
}
}
}
