|
| 1 | +# Generic falling block game solver! |
| 2 | + |
| 3 | +Create a program that will play the falling-block game for you, so that you can hijack the high score board and impress all of your friends! |
| 4 | + |
| 5 | +## Problem Description |
| 6 | + |
| 7 | +Imagine a hypothetical game where blocks of different shapes fall from the sky. |
| 8 | + |
| 9 | +Your job is to shift the blocks left and right so they fall into an optimal configuration. |
| 10 | + |
| 11 | +If you complete a full row of blocks, those are eliminated and the playing plane is lowered. If you allow the blocks to stack up too high, you lose! |
| 12 | + |
| 13 | +Blocks can be in ane of of the following shapes: |
| 14 | + |
| 15 | +### Square |
| 16 | + |
| 17 | +``` |
| 18 | +▓▓▓▓ |
| 19 | +▓▓▓▓ |
| 20 | +``` |
| 21 | + |
| 22 | +### Line |
| 23 | + |
| 24 | +``` |
| 25 | +▓▓ |
| 26 | +▓▓ |
| 27 | +▓▓ |
| 28 | +▓▓ |
| 29 | +``` |
| 30 | + |
| 31 | +### Z |
| 32 | + |
| 33 | +``` |
| 34 | +▓▓▓▓ |
| 35 | + ▓▓▓▓ |
| 36 | +``` |
| 37 | + |
| 38 | +### L |
| 39 | + |
| 40 | +``` |
| 41 | +▓▓ |
| 42 | +▓▓ |
| 43 | +▓▓▓▓ |
| 44 | +``` |
| 45 | + |
| 46 | +Blocks may also have one or more orientations. Each orientation represents the shape turned 90 degrees clockwise. So the L block has 4 orientations: |
| 47 | + |
| 48 | +``` |
| 49 | +# Orientation 1 |
| 50 | + ▓▓ |
| 51 | + ▓▓ |
| 52 | + ▓▓▓▓ |
| 53 | + |
| 54 | +# Orientation 2 |
| 55 | + ▓▓▓▓▓▓ |
| 56 | + ▓▓ |
| 57 | +
|
| 58 | +# Orientation 3 |
| 59 | + ▓▓▓▓ |
| 60 | + ▓▓ |
| 61 | + ▓▓ |
| 62 | + |
| 63 | +# Orientation 4 |
| 64 | + ▓▓ |
| 65 | + ▓▓▓▓▓▓ |
| 66 | +``` |
| 67 | + |
| 68 | +Unlike other popular, hypothetical falling block games, in our game players may choose which shape to play on each turn. |
| 69 | + |
| 70 | +## Requirements and Constraints |
| 71 | + |
| 72 | +### Input / Output Specifications |
| 73 | + |
| 74 | +The input to your solution will be a string of text representing a game board. Note that, to improve the appearance of the grid, each cell in the grid is made up of two characters on one row. |
| 75 | + |
| 76 | +This means that the input will contain a string of 6 lines with 20 characters each, to give the appearance of a grid of 6x10 square cells (see tests below for examples). |
| 77 | + |
| 78 | +The output of your solution will be a string of text representing the best shape to play, given the current state of the game board, and the orientation of the block to play. |
| 79 | + |
| 80 | +### Constraints |
| 81 | + |
| 82 | +none |
| 83 | + |
| 84 | +## Examples and Test Cases |
| 85 | + |
| 86 | +Your solution should include the following integration tests, and they should all pass: |
| 87 | + |
| 88 | +```ruby |
| 89 | +require 'minitest/autorun' |
| 90 | + |
| 91 | +class GenericFallingBlocksGameTest < Minitest::Test |
| 92 | + def test_recommends_any_block_when_plane_is_level |
| 93 | + skip 'Not implemented' |
| 94 | + |
| 95 | + game_plane = <<~PLANE |
| 96 | +
|
| 97 | +
|
| 98 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 99 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 100 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 101 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 102 | + PLANE |
| 103 | + assert_equal 'Any', described_class.new(game_plane).recommended_block |
| 104 | + assert_equal :any, described_class.new(game_plane).recommended_orientation |
| 105 | + end |
| 106 | + |
| 107 | + def test_correctly_recommends_square_block_any_orientation |
| 108 | + skip 'Not implemented' |
| 109 | + |
| 110 | + game_plane = <<~PLANE |
| 111 | +
|
| 112 | +
|
| 113 | + ▓▓▓ ▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 114 | + ▓▓▓ ▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 115 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 116 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 117 | + PLANE |
| 118 | + instance = described_class.new(game_plane) |
| 119 | + assert_equal 'Square', instance.recommended_block |
| 120 | + assert_equal :any, instance.recommended_orientation |
| 121 | + end |
| 122 | + |
| 123 | + def test_correctly_recommends_line_block_orientation_1 |
| 124 | + skip 'Not implemented' |
| 125 | + |
| 126 | + game_plane = <<~PLANE |
| 127 | +
|
| 128 | +
|
| 129 | + ▓▓▓ ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 130 | + ▓▓▓ ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 131 | + ▓▓▓ ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 132 | + ▓▓▓ ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 133 | + PLANE |
| 134 | + instance = described_class.new(game_plane) |
| 135 | + assert_equal 'Line', instance.recommended_block |
| 136 | + assert_equal :orientation_1, instance.recommended_orientation |
| 137 | + end |
| 138 | + |
| 139 | + def test_correctly_recommends_line_block_orientation_2 |
| 140 | + skip 'Not implemented' |
| 141 | + |
| 142 | + game_plane = <<~PLANE |
| 143 | +
|
| 144 | +
|
| 145 | + ▓▓▓▓▓▓▓▓▓▓ ▓▓ |
| 146 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 147 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 148 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 149 | + PLANE |
| 150 | + instance = described_class.new(game_plane) |
| 151 | + assert_equal 'Line', instance.recommended_block |
| 152 | + assert_equal :orientation_2, instance.recommended_orientation |
| 153 | + end |
| 154 | + |
| 155 | + def test_correctly_recommends_z_block_orientation_1 |
| 156 | + skip 'Not implemented' |
| 157 | + |
| 158 | + game_plane = <<~PLANE |
| 159 | +
|
| 160 | +
|
| 161 | + ▓▓▓▓▓▓▓▓▓▓▓▓ ▓▓ |
| 162 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓ ▓▓ |
| 163 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 164 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 165 | + PLANE |
| 166 | + instance = described_class.new(game_plane) |
| 167 | + assert_equal 'Z', instance.recommended_block |
| 168 | + assert_equal :orientation_1, instance.recommended_orientation |
| 169 | + end |
| 170 | + |
| 171 | + def test_correctly_recommends_z_block_orientation_2 |
| 172 | + skip 'Not implemented' |
| 173 | + |
| 174 | + game_plane = <<~PLANE |
| 175 | +
|
| 176 | +
|
| 177 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓ ▓▓ |
| 178 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓ ▓▓▓▓ |
| 179 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 180 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 181 | + PLANE |
| 182 | + instance = described_class.new(game_plane) |
| 183 | + assert_equal 'Z', instance.recommended_block |
| 184 | + assert_equal :orientation_2, instance.recommended_orientation |
| 185 | + end |
| 186 | + |
| 187 | + def test_correctly_recommends_l_orientation_1 |
| 188 | + skip 'Not implemented' |
| 189 | + |
| 190 | + game_plane = <<~PLANE |
| 191 | +
|
| 192 | +
|
| 193 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓ ▓▓ |
| 194 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓ ▓▓ |
| 195 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓ ▓▓ |
| 196 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 197 | + PLANE |
| 198 | + instance = described_class.new(game_plane) |
| 199 | + assert_equal 'L', instance.recommended_block |
| 200 | + assert_equal :orientation_1, instance.recommended_orientation |
| 201 | + end |
| 202 | + |
| 203 | + def test_correctly_recommends_l_orientation_2 |
| 204 | + skip 'Not implemented' |
| 205 | + |
| 206 | + game_plane = <<~PLANE |
| 207 | +
|
| 208 | +
|
| 209 | + ▓▓▓▓▓▓▓▓▓▓ ▓▓▓▓ |
| 210 | + ▓▓▓▓▓▓▓▓▓▓ ▓▓▓▓▓▓▓▓ |
| 211 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 212 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 213 | + PLANE |
| 214 | + instance = described_class.new(game_plane) |
| 215 | + assert_equal 'L', instance.recommended_block |
| 216 | + assert_equal :orientation_2, instance.recommended_orientation |
| 217 | + end |
| 218 | + |
| 219 | + def test_correctly_recommends_l_orientation_3 |
| 220 | + skip 'Not implemented' |
| 221 | + |
| 222 | + game_plane = <<~PLANE |
| 223 | +
|
| 224 | +
|
| 225 | + ▓▓▓▓▓▓▓▓ ▓▓▓▓▓▓▓▓ |
| 226 | + ▓▓▓▓▓▓▓▓▓▓ ▓▓▓▓▓▓▓▓ |
| 227 | + ▓▓▓▓▓▓▓▓▓▓ ▓▓▓▓▓▓▓▓ |
| 228 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 229 | + PLANE |
| 230 | + instance = described_class.new(game_plane) |
| 231 | + assert_equal 'L', instance.recommended_block |
| 232 | + assert_equal :orientation_3, instance.recommended_orientation |
| 233 | + end |
| 234 | + |
| 235 | + def test_correctly_recommends_l_orientation_4 |
| 236 | + skip 'Not implemented' |
| 237 | + |
| 238 | + game_plane = <<~PLANE |
| 239 | +
|
| 240 | +
|
| 241 | + ▓▓▓▓▓▓▓▓ ▓▓▓▓▓▓ |
| 242 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 243 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 244 | + ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ |
| 245 | + PLANE |
| 246 | + instance = described_class.new(game_plane) |
| 247 | + assert_equal 'L', instance.recommended_block |
| 248 | + assert_equal :orientation_4, instance.recommended_orientation |
| 249 | + end |
| 250 | + |
| 251 | + private |
| 252 | + |
| 253 | + def described_class |
| 254 | + # TODO: Define me! |
| 255 | + end |
| 256 | +end |
| 257 | +``` |
| 258 | + |
| 259 | +### Sample Inputs and Outputs |
| 260 | + |
| 261 | +See passing tests above for samples. |
| 262 | + |
| 263 | +### Instructions |
| 264 | + |
| 265 | +1. Set up a test file with the above test cases, so that you are able to run all of the tests and see them pass/fail/skip. |
| 266 | +2. Write code that will solve the problem and pass the tests. |
| 267 | +3. Don't try to pass all of the tests at once, it's better to solve them one at a time (in the order they are listed above). |
| 268 | + |
| 269 | +## Evaluation Criteria: |
| 270 | + |
| 271 | +- All tests pass |
| 272 | + |
| 273 | +### Bonus criteria |
| 274 | + |
| 275 | +- Your solution is able to handle more complicated game boards and still produce reliable results. |
| 276 | + |
| 277 | +### Mega bonus criteria |
| 278 | + |
| 279 | +(Don't worry if you don't get this far...) |
| 280 | + |
| 281 | +- Your solution is able to handle new block shapes and will produce the most optimal solution based on all the available shapes. |
| 282 | + |
| 283 | +--- |
| 284 | + |
| 285 | +## How to run your main file |
| 286 | + |
| 287 | +``` |
| 288 | +bundle exec ruby katas/generic_falling_blocks_game_solver/bodacious/main.rb |
| 289 | +``` |
| 290 | + |
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