User:Nightmareci

Definitions

In this page, the very top row is row number 0, the row below the top row is row number 1, and so on, until 20 (TGM1 has 20 visible rows + 1 vanish zone row).

Tetris The Grand Master

Some of the following information may not be consistent with other wiki pages; where this applies, simply ignore the information elsewhere in the wiki. Information here is still work in progress.

Speed Timings

Gravity

Directly from Tetris The Grand Master, here is the gravity curve:

Internal Gravity[1]

Level	Interal Gravity (1/256 G)	Level	Internal Gravity (1/256 G)
0	4	220	32
30	6	230	64
35	8	233	96
40	10	236	128
50	12	239	160
60	16	243	192
70	32	247	224
80	48	251	256 (1G)
90	64	300	512 (2G)
100	80	330	768 (3G)
120	96	360	1024 (4G)
140	112	400	1280 (5G)
160	128	420	1024 (4G)
170	144	450	768 (3G)
200	4	500	5120 (20G)

In the following, Gcount is the current Gravity Count; Gspeed is the Gravity Speed, and is equal to one of the Internal Gravity entries in the above table. All division is rounded down to an integer (60/256 = 0, 260/256 = 1).

On the very first frame, soft drop is not processed, so if you hold soft drop coming into the first frame, the piece won't lock on the first frame, but if you have soft drop pressed in the second frame, it can lock at that point. From this, soft drop simply is not even "pressed" on the first frame; this assumption is used in the description below.

1. Preparation for the pieces' first displayed frame (such as during ARE):
   • Gcount = 0
   • Gspeed is set to the appropriate value for the current level
   • Attempt to place the piece in row number 1 + Gspeed / 256, higher if necessary
2. Every frame this piece is displayed:
   • If soft drop is pressed:
     • If Gspeed < 256:
       • Attempt to drop one line
     • If the piece has blocks beneath it now:
       • Lock the piece
     • Go to 3.
   • If there are blocks below this piece:
     • Set Gcount to Gspeed
   • If Gcount is greater than or equal to 256:
     • Attempt to drop Gcount / 256 lines
     • Set Gcount to the remainder of Gcount / 256 (in C, this would be "Gcount %= 256")
   • Increase Gcount by Gspeed
   • Go to 3.
3. Further processing after gravity (processing will come back to 2. if the piece hasn't locked)