equal
deleted
inserted
replaced
22 |
22 |
23 /** |
23 /** |
24 * The offset in days from the '_date == 0' till |
24 * The offset in days from the '_date == 0' till |
25 * 'ConvertYMDToDate(ORIGINAL_BASE_YEAR, 0, 1)' |
25 * 'ConvertYMDToDate(ORIGINAL_BASE_YEAR, 0, 1)' |
26 */ |
26 */ |
27 #define DAYS_TILL_ORIGINAL_BASE_YEAR 0 |
27 #define DAYS_TILL_ORIGINAL_BASE_YEAR (365 * ORIGINAL_BASE_YEAR + ORIGINAL_BASE_YEAR / 4 - ORIGINAL_BASE_YEAR / 100 + ORIGINAL_BASE_YEAR / 400) |
28 |
28 |
29 /* Temporary value to make transition to full past 2090 easier/more clear */ |
29 /* Temporary value to make transition to full past 2090 easier/more clear */ |
30 #define BASE_YEAR 1920 |
30 #define BASE_YEAR 0 |
31 |
31 |
32 /* The absolute minimum & maximum years in OTTD */ |
32 /* The absolute minimum & maximum years in OTTD */ |
33 #define MIN_YEAR 1920 |
33 #define MIN_YEAR 0 |
34 #define MAX_YEAR 2090 |
34 /* MAX_YEAR, nicely rounded value of the number of years that can |
|
35 * be encoded in a single 32 bits date, about 2^31 / 366 years. */ |
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36 #define MAX_YEAR 5000000 |
35 |
37 |
36 /* Year and Date are defined elsewhere */ |
38 /* Year and Date are defined elsewhere */ |
37 typedef uint8 Month; |
39 typedef uint8 Month; |
38 typedef uint8 Day; |
40 typedef uint8 Day; |
39 typedef uint16 DateFract; |
41 typedef uint16 DateFract; |