// This function returns a float, after the source string in the destination
// string. If the string is not found, after max_len, the function returns
// -1.0f. The function is NOT case sensitive
float get_float_after_string (const char *needle, const char *haystack, Uint32 max_len)
{
Sint32 n_end = get_string_occurance (needle, haystack, max_len, 0);
Uint32 istart;
if (n_end < 0)
{
// needle not found
return -1.0f;
}
istart = n_end;
while (istart < max_len)
{
if (haystack[istart] == '\n')
// no number on this line
return -1.0f;
if (isdigit (haystack[istart]) || haystack[istart] == '+' || haystack[istart] == '-' || haystack[istart] == '.'){
// we've probably found a number
//return atof (&haystack[istart]);
//char temp[max_len-istart+1]; //Wasteful, if the float doesn't go to the end of the line, but it will reserve enough space
char temp[200]; //It'd be better not to use an arbitrary constant, but we can't use run-time size on compilers like MSVC
memcpy(temp, &haystack[istart], min2i(max_len-istart, sizeof(temp)));
temp[min2i(max_len-istart, sizeof(temp))] = '\0';
return atof (temp);
}
istart++;
}
// no number after needle
return -1.0f;
}
// This function returns an integer, after the needle in the haystack
// string. If the string is not found, after max_len, the function returns -1.
// The function is NOT case sensitive
Sint32 get_integer_after_string (const char *needle, const char *haystack, Uint32 max_len)
{
Sint32 n_end = get_string_occurance (needle, haystack, max_len, 0);
Uint32 istart;
if (n_end < 0)
{
// needle not found
return -1;
}
istart = n_end;
while (istart < max_len)
{
if (haystack[istart] == '\n')
// no integer on this line
return -1;
if (isdigit (haystack[istart]) || haystack[istart] == '+' || haystack[istart] == '-'){
// we've probably found a number
//return atoi (&haystack[istart]);
char temp[1<<sizeof(int)]; //Wasteful, but it will reserve enough space for MAX_INT as a string. If we change to atol or similar, use sizeof(long) instead
int len = min2i(max_len-istart, (1<<sizeof(int))-1);
memcpy(temp, &haystack[istart], len-1);
temp[len] = '\0';
return atoi (temp);
}
istart++;
}
// no integer after needle
return -1;
}
void get_old_world_x_y (short *scene_x, short *scene_y)
{
AABBOX box;
float t, x, y, z, t1, t2, tx, ty, dx, dy, h, len;
int i, j, h_max, h_min, h1, h2, h3, h4, sx, sy, zx, zy, i_min, i_max, j_min, j_max;
x = click_line.center[X];
y = click_line.center[Y];
z = click_line.center[Z];
dx = click_line.direction[X];
dy = click_line.direction[Y];
t = min2f(4.0f, max2f(-2.2f, z));
if (t != z)
{
t = (t-z)/click_line.direction[Z];
x += t*dx;
y += t*dy;
}
t = 6.2f / click_line.direction[Z];
len = min2f(max2f(t, -t), click_line.length);
len = click_line.length;
if (max2f(dx, -dx) < 0.000001f)
{
zx = 1;
sx = 0;
}
else
{
zx = 0;
if (dx < 0.0f) sx = -1;
else sx = 1;
}
if (max2f(dy, -dy) < 0.000001f)
{
zy = 1;
sy = 0;
}
else
{
zy = 0;
if (dy < 0.0f) sy = -1;
else sy = 1;
}
i = x*2.0f;
j = y*2.0f;
i_min = min2f(x, x+dx*len)*2.0f;
i_max = max2f(x, x+dx*len)*2.0f;
j_min = min2f(y, y+dy*len)*2.0f;
j_max = max2f(y, y+dy*len)*2.0f;
i_min = max2i(min2i(i_min, tile_map_size_x*6), 0);
i_max = max2i(min2i(i_max, tile_map_size_x*6-1), 0);
j_min = max2i(min2i(j_min, tile_map_size_y*6), 0);
j_max = max2i(min2i(j_max, tile_map_size_y*6-1), 0);
i = min2i(max2i(i, i_min), i_max-1);
j = min2i(max2i(j, j_min), j_max-1);
h = 0.0f;
while ((i >= i_min) && (j >= j_min) && (i < i_max) && (j < j_max))
{
h1 = height_map[j*tile_map_size_x*6+i];
h2 = height_map[j*tile_map_size_x*6+i+1];
h3 = height_map[(j+1)*tile_map_size_x*6+i];
h4 = height_map[(j+1)*tile_map_size_x*6+i+1];
h_max = max2i(max2i(h1, h2), max2i(h3, h4));
h_min = min2i(min2i(h1, h2), min2i(h3, h4));
tx = i*0.5f;
ty = j*0.5f;
box.bbmin[X] = tx;
box.bbmin[Y] = ty;
box.bbmin[Z] = h_min*0.2f-2.2f;
box.bbmax[X] = tx+1.0f;
box.bbmax[Y] = ty+1.0f;
box.bbmax[Z] = h_max*0.2f-2.2f;
if (click_line_bbox_intersection(box))
{
box.bbmin[X] = tx+0.0f;
box.bbmin[Y] = ty+0.0f;
box.bbmin[Z] = h1*0.2f-2.2f;
box.bbmax[X] = tx+0.5f;
box.bbmax[Y] = ty+0.5f;
box.bbmax[Z] = h1*0.2f-2.2f;
if (click_line_bbox_intersection(box))
{
h = h1*0.2f-2.2f;
break;
}
box.bbmin[X] = tx+0.5f;
box.bbmin[Y] = ty+0.0f;
box.bbmin[Z] = h2*0.2f-2.2f;
box.bbmax[X] = tx+1.0f;
box.bbmax[Y] = ty+0.5f;
box.bbmax[Z] = h2*0.2f-2.2f;
if (click_line_bbox_intersection(box))
{
h = h2*0.2f-2.2f;
break;
}
box.bbmin[X] = tx+0.0f;
box.bbmin[Y] = ty+0.5f;
box.bbmin[Z] = h3*0.2f-2.2f;
box.bbmax[X] = tx+0.5f;
box.bbmax[Y] = ty+1.0f;
box.bbmax[Z] = h3*0.2f-2.2f;
if (click_line_bbox_intersection(box))
{
h = h3*0.2f-2.2f;
break;
}
box.bbmin[X] = tx+0.5f;
box.bbmin[Y] = ty+0.5f;
box.bbmin[Z] = h4*0.2f-2.2f;
box.bbmax[X] = tx+1.0f;
box.bbmax[Y] = ty+1.0f;
box.bbmax[Z] = h4*0.2f-2.2f;
if (click_line_bbox_intersection(box))
{
h = h4*0.2f-2.2f;
break;
}
}
if ((zx == 1) && (zy == 1)) break;
if (zx == 0) t1 = (tx+sx-x)/dx;
else t1 = 10e30;
if (zx == 0) t2 = (ty+sy-y)/dy;
else t2 = -10e30;
if (t1 < t2) i += 2*sx;
else j += 2*sy;
t = min2f(t1, t2);
x += dx*t;
y += dy*t;
}
t = (h-click_line.center[Z])/click_line.direction[Z];
*scene_x = (click_line.center[X]+click_line.direction[X]*t) / 0.5;
*scene_y = (click_line.center[Y]+click_line.direction[Y]*t) / 0.5;
}
