Sizes for pearl actor models
============================
	
Physical radius of pearls is 13/64 tiles.

|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
|                                                   | gfx16     | gfx32      | gfx40     | gfx48     | gfx64     |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Sprite image size [px]                            | 20        | 40         | 50        | 60        | 80        |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Physical pearl size (diameter) [px]               | 6.5       | 13.0       | 16.25     | 19.5      | 26.0      |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Data for steady models                            |           |            |           |           |           |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Pearl size in steady models [px] and [% of tile]  | 8  40.0%  | 12  37.5%  | 16  40.0% | 18  37.5% | 26  40.6% |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Data for fall models                              |           |            |           |           |           |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Model image size [px]                             | 20 x 100  | 40 x 200   | 50 x 250  | 60 x 300  | 80 x 400  |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Pearl size in fall models [px] and [% of tile]    |           |            |           |           |           |
| frame 1                                           | 8  50.0%  | 12  37.5%  | 16  40.0% | 18  37.5% | 26  40.6% |
| frame 2                                           | 6  37.5%  | 10  31.25% | 14  35.0% | 16  33.3% | 22  34.3% |
| frame 3                                           | 4  25.0%  | 8   25.0%  | 12  30.0% | 14  29.1% | 18  28.1% |
| frame 4                                           | 2  12.5%  | 6   18.75% | 10  25.0% | 10  20.8% | 14  21.8% |
| frame 5                                           | 0  0.0%   | 4   12.5%  | 8   20.0% | 8   16.6% | 10  15.6% |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Data for jump models                              |           |            |           |           |           |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Model image size [px]                             | 20 x 100  | 40 x 200   | 50 x 250  | 60 x 300  | 80 x 400  |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Pearl size in jump models [px] and [% of tile]    |           |            |           |           |           |
| frame 1                                           | 8   50.0% | 12  37.5%  | 16  40.0% | 18  37.5% | 26  40.6% |
| frame 2                                           | 10  62.5% | 14  43.7%  | 18  45.0% | 20  41.6% | 30  46.8% |
| frame 3                                           | 12  75.0% | 16  50.0%  | 20  50.0% | 22  45.8% | 34  53.1% |
| frame 4                                           | 14  87.5% | 18  56.2%  | 22  55.0% | 24  50.0% | 38  59.3% |
| frame 5                                           | 16  100%  | 20  62.5%  | 24  60.0% | 26  54.1% | 42  65.6% |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Data for steady shadow models                     |           |            |           |           |           |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Shadow size in steady models [px] and [% of tile] | 8   50.0% | 12  37.5%  | 16  40.0% | 18  37.5% | 26  40.6% |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Data for fall shadow models                       |           |            |           |           |           |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Model image size [px]                             | 20 x 100  | 40 x 200   | 50 x 250  | 60 x 300  | 80 x 400  |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Shadow size in fall models [px] and [% of tile]   |           |            |           |           |           |
| frame 1                                           | 8  50.0%  | 12  37.5%  | 16  40.0% | 18  37.5% | 26  40.6% |
| frame 2                                           | 6  37.5%  | 10  31.25% | 14  35.0% | 16  33.3% | 22  34.3% |
| frame 3                                           | 4  25.0%  | 8   25.0%  | 12  30.0% | 14  29.1% | 18  28.1% |
| frame 4                                           | 2  12.5%  | 6   18.75% | 10  25.0% | 10  20.8% | 14  21.8% |
| frame 5                                           | 0  0.0%   | 4   12.5%  | 8   20.0% | 8   16.6% | 10  15.6% |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Shadow shift to top left in fall models [px]      |           |            |           |           |           |
| frame 1                                           | 0         | 0          | 0         | 0         | 0         |
| frame 2                                           | 1         | 1          | 1         | 1         | 2         |
| frame 3                                           | 1         | 2          | 2         | 3         | 4         |
| frame 4                                           | 2         | 3          | 3         | 5         | 6         |
| frame 5                                           | -         | 4          | 5         | 6         | 8         |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Data for jump models                              |           |            |           |           |           |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|
| Shadow size in jump models [px] and [% of tile]   |           |            |           |           |           |
| frame 1                                           | 8   50.0% | 12  37.5%  | 16  40.0% | 18  37.5% | 26  40.6% |
| frame 2                                           | 10  62.5% | 14  43.7%  | 18  45.0% | 20  41.6% | 30  46.8% |
| frame 3                                           | 12  75.0% | 16  50.0%  | 20  50.0% | 22  45.8% | 34  53.1% |
| frame 4                                           | 14  87.5% | 18  56.2%  | 22  55.0% | 24  50.0% | 38  59.3% |
| frame 5                                           | 16  100%  | 20  62.5%  | 24  60.0% | 26  54.1% | 42  65.6% |
|---------------------------------------------------+-----------+------------+-----------+-----------+-----------|

Reference for jump, fall and sink models was gfx32. Other resolutions
adapted s.t. percent-of-tilesize values match best.

Note: To improve the fall illusion, the shadows are shifted towards the pearl (to
the top left) while the pearl is falling. We define two conditions that hold:
first:  the shadow of the first frame is not shifted at all.
second: the shadow of the last frame is exactly centered below the pearl.

// EOF
