177 lines
7.4 KiB
Arduino
177 lines
7.4 KiB
Arduino
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/* *****************************************************************************
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* Flash cart draw balls test v1.14 by Mr.Blinky May-Jun.2019 licenced under MIT
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* *****************************************************************************
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*
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* This test depend on file drawballs-test.bin being uploaded with the
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* flash-writer Python script in the develop area using the following command:
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*
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* python flash-writer.py -d drawballs-single-datafile.bin
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*
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* This demo draws a moving background tilemap with a bunch of bouncing ball sprites around
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*
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* Button controls:
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*
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* A - increase the number of bounching balls up to MAX_BALLS
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* B - decrease the number of balls down to zero
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*
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* D-Pad scroll the background
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*
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*/
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#include <Arduboy2.h>
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#include <ArduboyFX.h>
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#include "fxdata.h"
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#define FRAME_RATE 60
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#define MAX_BALLS 55 // 55 Balls possible at 60fps 155 at 30fps
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#define CIRCLE_POINTS 84
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#define VISABLE_TILES_PER_COLUMN 5 // the maximum number of tiles visable horizontally
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#define VISABLE_TILES_PER_ROW 9 // the maximum number of tiles visable vertically
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//datafile offsets
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constexpr uint8_t ballWidth = 16;
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constexpr uint8_t ballHeight = 16;
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constexpr uint8_t tilemapWidth = 16; // number of tiles in a tilemap row
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constexpr uint8_t tileWidth = 16;
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constexpr uint8_t tileHeight = 16;
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Arduboy2 arduboy;
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Point circlePoints[CIRCLE_POINTS] = // all the points of a circle with radius 15 used for the circling background effect
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{
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{-15,0}, {-15,1}, {-15,2}, {-15,3}, {-15,4}, {-14,5}, {-14,6}, {-13,7}, {-13,8}, {-12,9}, {-11,10}, {-10,11}, {-9,12}, {-8,13}, {-7,13}, {-6,14},
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{-5,14}, {-4,14}, {-3,15}, {-2,15}, {-1,15}, {0,15}, {1,15}, {2,15}, {3,15}, {4,14}, {5,14}, {6,14}, {7,13}, {8,13}, {9,12}, {10,11},
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{11,10}, {12,9}, {12,8}, {13,7}, {13,6}, {14,5}, {14,4}, {14,3}, {14,2}, {14,1}, {15,0}, {15,-1}, {15,-2}, {15,-3}, {15,-4}, {14,-5},
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{14,-6}, {13,-7}, {13,-8}, {12,-9}, {11,-10}, {10,-11}, {9,-12}, {8,-13}, {7,-13}, {6,-14}, {5,-14}, {4,-14}, {3,-15}, {2,-15}, {1,-15}, {0,-15},
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{-1,-15}, {-2,-15}, {-3,-15}, {-4,-14}, {-5,-14}, {-6,-14}, {-7,-13}, {-8,-13}, {-9,-12}, {-10,-11}, {-11,-10}, {-12,-9}, {-12,-8}, {-13,-7}, {-13,-6}, {-14,-5},
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{-14,-4}, {-14,-3}, {-14,-2}, {-14,-1}
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};
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Point camera;
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Point mapLocation = {16,16};
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struct Ball
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{
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int8_t x;
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int8_t y;
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int8_t xspeed;
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int8_t yspeed;
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};
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Ball ball[MAX_BALLS];
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uint8_t ballsVisible = MAX_BALLS;
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uint8_t pos;
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void setup() {
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arduboy.begin();
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arduboy.setFrameRate(FRAME_RATE);
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FX::disableOLED(); // OLED must be disabled before cart can be used. OLED display should only be enabled prior updating the display.
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FX::begin(FX_DATA_PAGE); // wakeup external flash chip, initialize datapage, detect presence of external flash chip
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for (uint8_t i=0; i < MAX_BALLS; i++) // initialize ball sprites
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{
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ball[i].x = random(113);
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ball[i].y = random(49);
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ball[i].xspeed = random(1,3);
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if (random(100) > 49) ball[i].xspeed = -ball[i].xspeed;
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ball[i].yspeed = random(1,3);
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if (random(100) > 49) ball[i].yspeed = -ball[i].yspeed;
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}
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}
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uint8_t tilemapBuffer[VISABLE_TILES_PER_ROW]; // a small buffer to store one horizontal row of tiles from the tilemap
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void loop() {
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if (!arduboy.nextFrame()) return;
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arduboy.pollButtons();
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if ((arduboy.justPressed(A_BUTTON) && ballsVisible < MAX_BALLS)) ballsVisible++; // Pressing A button increases the number of visible balls until the maximum has been reached
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if ((arduboy.justPressed(B_BUTTON) && ballsVisible > 0)) ballsVisible--; // Pressing B reduces the number of visible balls until none are visible
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if (arduboy.pressed(UP_BUTTON) && mapLocation.y > 16) mapLocation.y--; // Pressing directional buttons will scroll the tilemap
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if (arduboy.pressed(DOWN_BUTTON) && mapLocation.y < 176) mapLocation.y++;
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if (arduboy.pressed(LEFT_BUTTON) && mapLocation.x > 16) mapLocation.x--;
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if (arduboy.pressed(RIGHT_BUTTON) && mapLocation.x < 112) mapLocation.x++;
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camera.x = mapLocation.x + circlePoints[pos].x; // circle around a fixed point
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camera.y = mapLocation.y + circlePoints[pos].y;
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//draw tilemap
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for (int8_t y = 0; y < VISABLE_TILES_PER_COLUMN; y++)
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{
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FX::readDataArray(FX_DATA_TILEMAP, // read the visible tiles on a row from the tilemap in external flash
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y + camera.y / tileHeight, // the tilemap row
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camera.x / tileWidth, // the column within tilemap row
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tilemapWidth, // use the width of tilemap as array element size
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tilemapBuffer, // reading tiles into a small buffer is faster then reading each tile individually
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VISABLE_TILES_PER_ROW);
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for (uint8_t x = 0; x < VISABLE_TILES_PER_ROW; x++)
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{
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FX::drawBitmap(x * tileWidth - camera.x % tileWidth, // we're substracting the tile width and height modulus for scrolling effect
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y * tileHeight - camera.y % tileHeight, //
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FX_DATA_TILES, // the tilesheet bitmap offset in external flash
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tilemapBuffer[x], // tile index
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dbmNormal); // draw a row of normal tiles
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}
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}
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if (arduboy.notPressed(UP_BUTTON | DOWN_BUTTON | LEFT_BUTTON | RIGHT_BUTTON)) pos = ++pos % CIRCLE_POINTS; //only circle around when no directional buttons are pressed
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//draw balls
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for (uint8_t i=0; i < ballsVisible; i++)
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FX::drawBitmap(ball[i].x, // although this function is called drawBitmap it can also draw masked sprites
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ball[i].y,
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FX_DATA_BALLS, // the ball sprites masked bitmap offset in external flash memory
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0, // the drawballs-singe-datafile.bin file only has a single sprite frame
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dbmMasked /* | dbmReverse */ ); // remove the '/*' and '/*' to reverse the balls into white balls
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//when uploading the drawballs-singe-datafile.bin into the development area,
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//you can replace the "0" value in the drawBitmap function above with "i % 16" without the quotes to display 16 different balls
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//update ball movements
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for (uint8_t i=0; i < ballsVisible; i++)
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{
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if (ball[i].xspeed > 0) // Moving right
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{
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ball[i].x += ball[i].xspeed;
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if (ball[i].x > WIDTH - ballWidth) //off the right
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{
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ball[i].x = WIDTH - ballWidth;
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ball[i].xspeed = - ball[i].xspeed;
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}
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}
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else // moving left
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{
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ball[i].x += ball[i].xspeed;
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if (ball[i].x < 0) // off the left
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{
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ball[i].x = 0;
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ball[i].xspeed = - ball[i].xspeed;
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}
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}
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if (ball[i].yspeed > 0) // moving down
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{
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ball[i].y += ball[i].yspeed;
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if (ball[i].y > HEIGHT - tileHeight) // off the bottom
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{
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ball[i].y = HEIGHT - tileHeight;
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ball[i].yspeed = - ball[i].yspeed;
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}
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}
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else // moving up
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{
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ball[i].y += ball[i].yspeed;
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if (ball[i].y < 0) // off the top
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{
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ball[i].y = 0;
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ball[i].yspeed = - ball[i].yspeed;
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}
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}
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}
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FX::enableOLED();// only enable OLED for updating the display
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arduboy.display(CLEAR_BUFFER);
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FX::disableOLED();// disable so flash cart can be used at any time
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}
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