I simplified the library "ILI9225_TFT" provided by Arman Safikhani to better suit my needs in implementing a simple sliding puzzle game.
States.h@3:251e4d020501, 2018-04-27 (annotated)
- Committer:
- blac3777
- Date:
- Fri Apr 27 07:33:56 2018 +0000
- Revision:
- 3:251e4d020501
I simplified the library "ILI9225_TFT" provided by Arman Safikhani to suit my needs in implementing a simple sliding puzzle game.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
blac3777 | 3:251e4d020501 | 1 | #include "Fonts.h" |
blac3777 | 3:251e4d020501 | 2 | |
blac3777 | 3:251e4d020501 | 3 | //STATE 0 |
blac3777 | 3:251e4d020501 | 4 | //GLCD Displays the start screen - encouraging the player to start the game |
blac3777 | 3:251e4d020501 | 5 | //by displaying the message "PRESS SELECT TO START". |
blac3777 | 3:251e4d020501 | 6 | // |
blac3777 | 3:251e4d020501 | 7 | //Player must press the SELECT button to trigger the next STATE. |
blac3777 | 3:251e4d020501 | 8 | void greetingScreen() { |
blac3777 | 3:251e4d020501 | 9 | tft.clear(); |
blac3777 | 3:251e4d020501 | 10 | tft.setFont(Terminal12x16); |
blac3777 | 3:251e4d020501 | 11 | tft.drawText(60, 40, "PRESS", COLOR_RED); |
blac3777 | 3:251e4d020501 | 12 | tft.drawText(54, 65, "SELECT", COLOR_RED); |
blac3777 | 3:251e4d020501 | 13 | tft.drawText(77, 90, "TO", COLOR_RED); |
blac3777 | 3:251e4d020501 | 14 | tft.drawText(60, 115, "START", COLOR_RED); |
blac3777 | 3:251e4d020501 | 15 | |
blac3777 | 3:251e4d020501 | 16 | while(1) { |
blac3777 | 3:251e4d020501 | 17 | if(getPlayerInput(wirelessInput_Freq) == 6) //SELECT -> 6 |
blac3777 | 3:251e4d020501 | 18 | return; |
blac3777 | 3:251e4d020501 | 19 | } |
blac3777 | 3:251e4d020501 | 20 | } |
blac3777 | 3:251e4d020501 | 21 | |
blac3777 | 3:251e4d020501 | 22 | //STATE 1 |
blac3777 | 3:251e4d020501 | 23 | //GLCD encourages player to take a picture of something by displaying the |
blac3777 | 3:251e4d020501 | 24 | //message "SELECT TO TAKE PICTURE". |
blac3777 | 3:251e4d020501 | 25 | // |
blac3777 | 3:251e4d020501 | 26 | //Player must press the SELECT button to take a picture and trigger the next |
blac3777 | 3:251e4d020501 | 27 | //STATE. |
blac3777 | 3:251e4d020501 | 28 | void takePicture() { |
blac3777 | 3:251e4d020501 | 29 | tft.clear(); |
blac3777 | 3:251e4d020501 | 30 | tft.setFont(Terminal12x16); |
blac3777 | 3:251e4d020501 | 31 | tft.drawText(54, 40, "SELECT", COLOR_RED); |
blac3777 | 3:251e4d020501 | 32 | tft.drawText(77, 65, "TO", COLOR_RED); |
blac3777 | 3:251e4d020501 | 33 | tft.drawText(65, 90, "TAKE", COLOR_RED); |
blac3777 | 3:251e4d020501 | 34 | tft.drawText(50, 115, "PICTURE", COLOR_RED); |
blac3777 | 3:251e4d020501 | 35 | |
blac3777 | 3:251e4d020501 | 36 | while(1) { |
blac3777 | 3:251e4d020501 | 37 | if(getPlayerInput(wirelessInput_Freq) == 6) { //SELECT -> 6 |
blac3777 | 3:251e4d020501 | 38 | for(int index = 0; index < 19200; index++) |
blac3777 | 3:251e4d020501 | 39 | handlePixel(index, getNextPixel()); |
blac3777 | 3:251e4d020501 | 40 | return; |
blac3777 | 3:251e4d020501 | 41 | } |
blac3777 | 3:251e4d020501 | 42 | } |
blac3777 | 3:251e4d020501 | 43 | } |
blac3777 | 3:251e4d020501 | 44 | |
blac3777 | 3:251e4d020501 | 45 | //STATE 2 |
blac3777 | 3:251e4d020501 | 46 | //GLCD will display the picture taken in STATE 1 @ the bottom of the screen. |
blac3777 | 3:251e4d020501 | 47 | // |
blac3777 | 3:251e4d020501 | 48 | //Player input is ignored during this STATE. |
blac3777 | 3:251e4d020501 | 49 | void previewPicture() { |
blac3777 | 3:251e4d020501 | 50 | tft.clear(); |
blac3777 | 3:251e4d020501 | 51 | updatePuzzle(); |
blac3777 | 3:251e4d020501 | 52 | } |
blac3777 | 3:251e4d020501 | 53 | |
blac3777 | 3:251e4d020501 | 54 | //STATE 3 |
blac3777 | 3:251e4d020501 | 55 | //GLCD will display the message "SELECT > ACCEPT" atop "OR" atop |
blac3777 | 3:251e4d020501 | 56 | //"CANCEL > RETAKE" at the top of the screen. |
blac3777 | 3:251e4d020501 | 57 | // |
blac3777 | 3:251e4d020501 | 58 | //Player may press SELECT to continue (STATE 4) w| picture or CANCEL to retake |
blac3777 | 3:251e4d020501 | 59 | //the picture (STATE 1). |
blac3777 | 3:251e4d020501 | 60 | bool confirmPicture() { |
blac3777 | 3:251e4d020501 | 61 | tft.fillRectangle(0, 0, 175, 91, COLOR_BLACK); |
blac3777 | 3:251e4d020501 | 62 | tft.setFont(Terminal12x16); |
blac3777 | 3:251e4d020501 | 63 | tft.drawText(4, 8, "SELECT > ACCEPT", COLOR_RED); |
blac3777 | 3:251e4d020501 | 64 | tft.drawText(77, 33, "OR", COLOR_RED); |
blac3777 | 3:251e4d020501 | 65 | tft.drawText(4, 58, "CANCEL > RETAKE", COLOR_RED); |
blac3777 | 3:251e4d020501 | 66 | //printElementsInPicture(); |
blac3777 | 3:251e4d020501 | 67 | |
blac3777 | 3:251e4d020501 | 68 | while(1) { |
blac3777 | 3:251e4d020501 | 69 | if(getPlayerInput(wirelessInput_Freq) == 6) //SELECT -> 6 |
blac3777 | 3:251e4d020501 | 70 | return true; //Confirm the picture by returning true |
blac3777 | 3:251e4d020501 | 71 | else if(getPlayerInput(wirelessInput_Freq) == 7) //CANCEL -> 7 |
blac3777 | 3:251e4d020501 | 72 | return false; //Retake the picture by returning false |
blac3777 | 3:251e4d020501 | 73 | } |
blac3777 | 3:251e4d020501 | 74 | } |
blac3777 | 3:251e4d020501 | 75 | |
blac3777 | 3:251e4d020501 | 76 | //STATE 4 |
blac3777 | 3:251e4d020501 | 77 | //GLCD will display the message "LOADING" and keeps it there until the |
blac3777 | 3:251e4d020501 | 78 | //LPC1769 has finished shuffling the pieces in the background. When it is done, |
blac3777 | 3:251e4d020501 | 79 | //it will black out the screen, populate the 4x4 grid with the puzzle pieces, |
blac3777 | 3:251e4d020501 | 80 | //and start the player off at index 0 of the puzzle grid. |
blac3777 | 3:251e4d020501 | 81 | //Remark: 2 out of 16 of the puzzle pieces will be missing. There were 3 reasons |
blac3777 | 3:251e4d020501 | 82 | //that led us to this design choice: |
blac3777 | 3:251e4d020501 | 83 | //1) We had to remove, at the very least, 1 puzzle piece to make a classic |
blac3777 | 3:251e4d020501 | 84 | //sliding puzzle game. |
blac3777 | 3:251e4d020501 | 85 | //2) We desired that the sizeof(picture) << 32kB but we still wanted a colored |
blac3777 | 3:251e4d020501 | 86 | //image (i.e., 16 bit aray element) so we needed to get rid of 2 pieces to reach |
blac3777 | 3:251e4d020501 | 87 | //our goal. |
blac3777 | 3:251e4d020501 | 88 | //3) If puzzle piece positions for a classic sliding puzzle game are generated |
blac3777 | 3:251e4d020501 | 89 | //completely randomly then they are only solvable 50% of the time based off |
blac3777 | 3:251e4d020501 | 90 | //whether there is an even amount of permutations. There are applicable methods |
blac3777 | 3:251e4d020501 | 91 | //for only generating solvable puzzles but another (and easier) solution is to |
blac3777 | 3:251e4d020501 | 92 | //just remove a second puzzle piece. |
blac3777 | 3:251e4d020501 | 93 | // |
blac3777 | 3:251e4d020501 | 94 | //The player's button presses are ignored during this time. |
blac3777 | 3:251e4d020501 | 95 | void shufflePuzzle() { |
blac3777 | 3:251e4d020501 | 96 | tft.clear(); |
blac3777 | 3:251e4d020501 | 97 | tft.setFont(Terminal12x16); |
blac3777 | 3:251e4d020501 | 98 | tft.drawText(47, 40, "LOADING", COLOR_RED); |
blac3777 | 3:251e4d020501 | 99 | |
blac3777 | 3:251e4d020501 | 100 | shuffleGridIndices(); |
blac3777 | 3:251e4d020501 | 101 | |
blac3777 | 3:251e4d020501 | 102 | tft.clear(); |
blac3777 | 3:251e4d020501 | 103 | updatePuzzle(); |
blac3777 | 3:251e4d020501 | 104 | cursorIndex = 0; |
blac3777 | 3:251e4d020501 | 105 | highlightGridIndex(cursorIndex, false); |
blac3777 | 3:251e4d020501 | 106 | } |
blac3777 | 3:251e4d020501 | 107 | |
blac3777 | 3:251e4d020501 | 108 | //STATE 5 |
blac3777 | 3:251e4d020501 | 109 | //We wait for the player to press SELECT. If the player presses SELECT we must |
blac3777 | 3:251e4d020501 | 110 | //verify 2 characteristics about the target piece before we may trigger STATE 6: |
blac3777 | 3:251e4d020501 | 111 | //1) Target puzzle piece is NOT one of the 2 missing puzzle pieces. |
blac3777 | 3:251e4d020501 | 112 | //2) Target puzzle piece is NOT locked on all 4 sides. |
blac3777 | 3:251e4d020501 | 113 | // |
blac3777 | 3:251e4d020501 | 114 | //At this point, the player is able to use the UP, DOWN, LEFT, and RIGHT buttons |
blac3777 | 3:251e4d020501 | 115 | //to move around their cursor until they find a piece that they want to swap |
blac3777 | 3:251e4d020501 | 116 | //for another piece. While their cursor is hovering over the target piece, they |
blac3777 | 3:251e4d020501 | 117 | //would press SELECT to "grab it". The cursor is green in this state. |
blac3777 | 3:251e4d020501 | 118 | uint8_t selectionMode() { |
blac3777 | 3:251e4d020501 | 119 | highlightGridIndex(cursorIndex, false); |
blac3777 | 3:251e4d020501 | 120 | //printElementsInPicture(); |
blac3777 | 3:251e4d020501 | 121 | while(1) { |
blac3777 | 3:251e4d020501 | 122 | if(getPlayerInput(wirelessInput_Freq) == 6) { //SELECT -> 6 |
blac3777 | 3:251e4d020501 | 123 | if(selectionMode_indexVerified(cursorIndex)) //& index verified |
blac3777 | 3:251e4d020501 | 124 | return cursorIndex; |
blac3777 | 3:251e4d020501 | 125 | } |
blac3777 | 3:251e4d020501 | 126 | else if(getPlayerInput(wirelessInput_Freq) == 2 //UP -> 2 |
blac3777 | 3:251e4d020501 | 127 | && cursorIndex - 4 > -1) |
blac3777 | 3:251e4d020501 | 128 | highlightGridIndex(cursorIndex - 4, false); |
blac3777 | 3:251e4d020501 | 129 | else if(getPlayerInput(wirelessInput_Freq) == 3 //DOWN -> 3 |
blac3777 | 3:251e4d020501 | 130 | && cursorIndex + 4 < 16) |
blac3777 | 3:251e4d020501 | 131 | highlightGridIndex(cursorIndex + 4, false); |
blac3777 | 3:251e4d020501 | 132 | else if(getPlayerInput(wirelessInput_Freq) == 4 //LEFT -> 4 |
blac3777 | 3:251e4d020501 | 133 | && ((cursorIndex%4) - 1) > -1) |
blac3777 | 3:251e4d020501 | 134 | highlightGridIndex(cursorIndex - 1, false); |
blac3777 | 3:251e4d020501 | 135 | else if(getPlayerInput(wirelessInput_Freq) == 5 //RIGHT -> 5 |
blac3777 | 3:251e4d020501 | 136 | && ((cursorIndex%4) + 1) < 4) |
blac3777 | 3:251e4d020501 | 137 | highlightGridIndex(cursorIndex + 1, false); |
blac3777 | 3:251e4d020501 | 138 | } |
blac3777 | 3:251e4d020501 | 139 | } |
blac3777 | 3:251e4d020501 | 140 | |
blac3777 | 3:251e4d020501 | 141 | //STATE 6 |
blac3777 | 3:251e4d020501 | 142 | //If player presses UP, DOWN, LEFT, or RIGHT, we verify that target index is an |
blac3777 | 3:251e4d020501 | 143 | //empty space before making the move and triggering STATE 5. A piece may only be |
blac3777 | 3:251e4d020501 | 144 | //moved 1 index position and it may only be moved to 1 of the 2 missing puzzle |
blac3777 | 3:251e4d020501 | 145 | //piece indices. |
blac3777 | 3:251e4d020501 | 146 | // |
blac3777 | 3:251e4d020501 | 147 | //Only UP, DOWN, LEFT, RIGHT, and CANCEL are monitored during this state. |
blac3777 | 3:251e4d020501 | 148 | //Pressing CANCEL, at any time, would restore us back to STATE 5 and no swapping |
blac3777 | 3:251e4d020501 | 149 | //would occur. The cursor is red in this state. |
blac3777 | 3:251e4d020501 | 150 | void selectedMode(uint8_t selectedIndex) { |
blac3777 | 3:251e4d020501 | 151 | highlightGridIndex(selectedIndex, true); |
blac3777 | 3:251e4d020501 | 152 | |
blac3777 | 3:251e4d020501 | 153 | while(1) { |
blac3777 | 3:251e4d020501 | 154 | if(getPlayerInput(wirelessInput_Freq) == 7) //CANCEL -> 7 |
blac3777 | 3:251e4d020501 | 155 | return; |
blac3777 | 3:251e4d020501 | 156 | if(getPlayerInput(wirelessInput_Freq) == 2 //UP -> 2 |
blac3777 | 3:251e4d020501 | 157 | && selectedIndex - 4 > -1) { |
blac3777 | 3:251e4d020501 | 158 | if(puzzState[selectedIndex - 4] > 13) { //Empty space above? |
blac3777 | 3:251e4d020501 | 159 | swap(&puzzState[selectedIndex], &puzzState[selectedIndex - 4]); |
blac3777 | 3:251e4d020501 | 160 | updatePuzzle(); |
blac3777 | 3:251e4d020501 | 161 | cursorIndex = selectedIndex - 4; |
blac3777 | 3:251e4d020501 | 162 | return; |
blac3777 | 3:251e4d020501 | 163 | } |
blac3777 | 3:251e4d020501 | 164 | } |
blac3777 | 3:251e4d020501 | 165 | if(getPlayerInput(wirelessInput_Freq) == 3 //DOWN -> 3 |
blac3777 | 3:251e4d020501 | 166 | && selectedIndex + 4 < 16) { |
blac3777 | 3:251e4d020501 | 167 | if(puzzState[selectedIndex + 4] > 13) { //Empty space below? |
blac3777 | 3:251e4d020501 | 168 | swap(&puzzState[selectedIndex], &puzzState[selectedIndex + 4]); |
blac3777 | 3:251e4d020501 | 169 | updatePuzzle(); |
blac3777 | 3:251e4d020501 | 170 | cursorIndex = selectedIndex + 4; |
blac3777 | 3:251e4d020501 | 171 | return; |
blac3777 | 3:251e4d020501 | 172 | } |
blac3777 | 3:251e4d020501 | 173 | } |
blac3777 | 3:251e4d020501 | 174 | if(getPlayerInput(wirelessInput_Freq) == 4 //LEFT -> 4 |
blac3777 | 3:251e4d020501 | 175 | && ((selectedIndex%4) - 1) > -1) { |
blac3777 | 3:251e4d020501 | 176 | if(puzzState[selectedIndex - 1] > 13) { //Empty space to the left? |
blac3777 | 3:251e4d020501 | 177 | swap(&puzzState[selectedIndex], &puzzState[selectedIndex - 1]); |
blac3777 | 3:251e4d020501 | 178 | updatePuzzle(); |
blac3777 | 3:251e4d020501 | 179 | cursorIndex = selectedIndex - 1; |
blac3777 | 3:251e4d020501 | 180 | return; |
blac3777 | 3:251e4d020501 | 181 | } |
blac3777 | 3:251e4d020501 | 182 | } |
blac3777 | 3:251e4d020501 | 183 | if(getPlayerInput(wirelessInput_Freq) == 5 //RIGHT -> 5 |
blac3777 | 3:251e4d020501 | 184 | && ((selectedIndex%4) + 1) < 4) { |
blac3777 | 3:251e4d020501 | 185 | if(puzzState[selectedIndex + 1] > 13) { //Empty space to the right? |
blac3777 | 3:251e4d020501 | 186 | swap(&puzzState[selectedIndex], &puzzState[selectedIndex + 1]); |
blac3777 | 3:251e4d020501 | 187 | updatePuzzle(); |
blac3777 | 3:251e4d020501 | 188 | cursorIndex = selectedIndex + 1; |
blac3777 | 3:251e4d020501 | 189 | return; |
blac3777 | 3:251e4d020501 | 190 | } |
blac3777 | 3:251e4d020501 | 191 | } |
blac3777 | 3:251e4d020501 | 192 | } |
blac3777 | 3:251e4d020501 | 193 | } |