advtrains.git - Advtrains mod for minetest.

path: root/textures/advtrains_newlocomotive_inv.png

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>GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef DAYNIGHTRATIO_HEADER #define DAYNIGHTRATIO_HEADER inline u32 time_to_daynight_ratio(float time_of_day, bool smooth) { float t = time_of_day; if(t < 0) t += ((int)(-t)/24000)*24000; if(t >= 24000) t -= ((int)(t)/24000)*24000; if(t > 12000) t = 24000 - t; float values[][2] = { {4250+125, 150}, {4500+125, 150}, {4750+125, 250}, {5000+125, 350}, {5250+125, 500}, {5500+125, 675}, {5750+125, 875}, {6000+125, 1000}, {6250+125, 1000}, }; if(!smooth){ float lastt = values[0][0]; for(u32 i=1; i<sizeof(values)/sizeof(*values); i++){ float t0 = values[i][0]; float switch_t = (t0 + lastt) / 2; lastt = t0; if(switch_t <= t) continue; return values[i][1]; } return 1000; } else { for(u32 i=0; i<sizeof(values)/sizeof(*values); i++){ if(values[i][0] <= t) continue; if(i == 0) return values[i][1]; float td0 = values[i][0] - values[i-1][0]; float f = (t - values[i-1][0]) / td0; return f * values[i][1] + (1.0 - f) * values[i-1][1]; } return 1000; } } #endif


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