354 lines
13 KiB
C++
354 lines
13 KiB
C++
/**
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WIP raycasting demo for Pokitto.
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Don't forget to compile with -O3!
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author: Miloslav "drummyfish" Ciz
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license: CC0 1.0
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*/
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// redefine player's height
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#define CAMERA_COLL_HEIGHT_BELOW ((3 * UNITS_PER_SQUARE) / 2)
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#include "general.hpp"
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#define LEVEL_X_RES 29
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#define LEVEL_Y_RES 21
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Player player;
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#define SPRITE_MAX_DISTANCE 5 * UNITS_PER_SQUARE
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#define JUMP_SPEED 500
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char floorColor = 0;
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Vector2D selectedSquare; ///< Coords of tile selected for editing.
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#define HEIGHT_PROFILE_LENGTH 256
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const int8_t heightProfile[] = {
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9,9,9,10,10,10,11,11,12,13,13,14,14,14,15,15,15,16,16,16,16,16,15,15,15,14,14,
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13,13,12,11,10,10,9,9,9,8,8,8,8,8,8,7,7,7,6,5,4,4,3,3,3,3,3,3,4,5,7,8,10,11,12,
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12,13,13,13,14,16,19,20,21,21,22,22,22,23,23,23,23,22,22,21,20,19,18,18,17,17,
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17,17,16,16,16,16,16,16,16,15,15,15,14,14,13,12,11,10,8,7,6,5,5,5,4,4,4,4,4,5,
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5,5,6,6,7,7,7,8,8,8,8,8,8,8,7,7,7,7,6,6,5,4,4,3,2,2,2,1,1,1,1,2,3,5,6,7,9,13,
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13,13,18,18,22,22,22,22,22,22,21,21,20,20,19,16,16,16,14,14,14,15,15,15,15,15,
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16,17,17,18,18,18,16,16,16,16,15,15,15,14,14,13,12,8,7,7,7,8,9,11,12,12,13,13,
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13,12,11,10,10,10,10,11,11,12,13,13,12,12,11,11,10,10,9,9,9,9,9,9,10,10,11,12,
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13,13,14,14,14,14,14,13,13,12,11,11,11,11,10,10,10,10};
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const unsigned char imageBackground[] =
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{ 55, 44 // width, height
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xff
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,0xff,0xff,0xff,0xbc,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b
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,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xff,0xff,0xbc,0xbc,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
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,0x3b,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xff,0xff,0xbc,0xdb
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,0xdb,0xdb,0xff,0xff,0xff,0xff,0xff,0xbc,0xdb,0xdb,0xbc,0xd2,0xd2,0xd2
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,0xff,0xbc,0xdb,0xdb,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xff,0xbc,0xff,0xff,0xbc,0xbc,0xff,0xd2
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,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xff
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,0xbc,0xbc,0xff,0xff,0xbc,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
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,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xbc,0xdb,0xff,0xff,0xff,0xff
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,0xbc,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xff,0xbc,0xbc,0xd2,0xd2,0xd2,0xd2,0xd2
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,0xd2,0xd2,0x69,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff
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,0xbc,0xbc,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xbc,0xd2,0xd2,0xd2,0xd2
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,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xff,0xbc,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xbc,0xd2
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,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xbc,0xbc,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
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,0x69,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xbc
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,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0xbc,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
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,0xd2,0xd2,0x3b,0x3b,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0xbc,0xbc
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2
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,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0xff,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b
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,0xff,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2
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,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b,0xff,0xff,0xbc,0xdb,0xbc,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b
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,0x3b,0x3b,0xff,0xff,0xbc,0xdb,0xff,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b,0x3b,0xff,0xbc,0xbc,0xdb
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,0xff,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
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,0x3b,0x3b,0x3b,0x3b,0xff,0xbc,0xbc,0xdb,0xff,0xbc,0xbc,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0xff,0xbc
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,0xbc,0xbc,0xff,0xff,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2
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,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0xbc,0xbc,0xff,0xbc,0xff,0xff,0xbc,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b
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,0xbc,0xdb,0xff,0xff,0xff,0xff,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2
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,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b,0x3b,0xbc,0xdb,0xff,0xff,0xff,0xbc
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,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b
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,0x3b,0x3b,0xbc,0xdb,0xff,0xff,0xdb,0xbc,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0xbc,0xdb,0xff,0xbc
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,0xdb,0xbc,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
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,0xd2,0x69,0x3b,0x3b,0xdb,0xdb,0xff,0xdb,0xdb,0xdb,0xbc,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xbc,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2
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,0xd2,0xd2,0xd2,0x69,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2
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,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b
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,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
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,0x3b,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xbc,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xbc,0xbc,0xd2,0xd2,0xd2
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,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xff,0xff,0xbc,0xbc,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xff,0xff,0xbc
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,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xff,0xff,0xff,0xbc,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
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,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff
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,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2
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,0xd2,0x3b,0x3b,0x3b,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb
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,0xdb,0xdb,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0x69,0x3b,0x3b,0xdb,0xdb
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,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xdb,0xff,0xff,0xd2,0xd2
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,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
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};
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Unit floorHeightAt(int16_t x, int16_t y)
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{
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return (heightProfile[absVal(x) % HEIGHT_PROFILE_LENGTH] +
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heightProfile[absVal(y + 20) % HEIGHT_PROFILE_LENGTH]) *
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UNITS_PER_SQUARE;
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}
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uint16_t previousColumn = 255;
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uint16_t backgroundColumn = 0;
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/**
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Function for drawing a single pixel (like fragment shader).
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*/
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inline void pixelFunc(PixelInfo pixel)
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{
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uint8_t c = 0;
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int16_t intensity = 0;
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if (pixel.isWall)
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{
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c = pixel.hit.square.x != selectedSquare.x || pixel.hit.square.y != selectedSquare.y ? 50 : 30;
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intensity = pixel.depth / (UNITS_PER_SQUARE * 3);
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intensity += pixel.hit.direction % 2 == 0 ? 2 : 0;
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}
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else if (pixel.isFloor)
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{
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c = floorColor;
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if (!pixel.isHorizon)
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intensity = pixel.depth / (UNITS_PER_SQUARE * 3);
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}
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else
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{
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if (previousColumn == pixel.position.x)
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{
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c = imageBackground[2 + backgroundColumn * 22 + min(pixel.position.y,43) / 2];
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}
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else
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{
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backgroundColumn = absVal(pixel.position.x / 2 + (110 * player.mCamera.direction) / UNITS_PER_SQUARE) % 55;
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previousColumn = pixel.position.x;
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}
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}
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if (intensity != 0)
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c = addIntensity(c,intensity);
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uint8_t *buf = pokitto.display.screenbuffer;
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buf += pixel.position.x * SUBSAMPLE;
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buf += pixel.position.y * SCREEN_WIDTH;
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for (uint8_t i = 0; i < SUBSAMPLE - 1; ++i)
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*buf++ = c;
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*buf = c;
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}
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void draw()
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{
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RayConstraints c;
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c.maxHits = 6;
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c.maxSteps = 20;
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c.computeTextureCoords = 0;
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render(player.mCamera,floorHeightAt,0,0,pixelFunc,c);
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pokitto.display.setColor(rgbToIndex(7,7,3));
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pokitto.display.setCursor(1,1);
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pokitto.display.print(player.mCamera.position.x);
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pokitto.display.print(" ");
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pokitto.display.print(player.mCamera.position.y);
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pokitto.display.print(" ");
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pokitto.display.print(player.mCamera.direction);
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}
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bool runReleased = false;
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int main()
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{
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initGeneral();
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floorColor = rgbToIndex(4,2,0);
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player.setPositionSquare(4,5);
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uint32_t previousTime = 0;
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uint32_t dt;
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while (pokitto.isRunning())
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{
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if (pokitto.update())
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{
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draw();
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uint32_t timeNow = pokitto.getTime();
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dt = timeNow - previousTime;
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previousTime = timeNow;
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int16_t horizontalStep = (dt * PLAYER_SPEED * (player.mRunning ? 2 : 1)) / 1000;
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int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
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Vector2D d = angleToDirection(player.mCamera.direction);
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Vector2D facingOffset;
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|
|
|
if (player.mCamera.direction > (4 * UNITS_PER_SQUARE / 12) &&
|
|
player.mCamera.direction <= (8 * UNITS_PER_SQUARE / 12))
|
|
facingOffset.x = -1;
|
|
else if (player.mCamera.direction < (2 * UNITS_PER_SQUARE / 12) ||
|
|
player.mCamera.direction >= (10 * UNITS_PER_SQUARE / 12))
|
|
facingOffset.x = 1;
|
|
else
|
|
facingOffset.x = 0;
|
|
|
|
if (player.mCamera.direction > (UNITS_PER_SQUARE / 12) &&
|
|
player.mCamera.direction <= (5 * UNITS_PER_SQUARE / 12))
|
|
facingOffset.y = -1;
|
|
else if (player.mCamera.direction > (6 * UNITS_PER_SQUARE / 12) &&
|
|
player.mCamera.direction <= (11 * UNITS_PER_SQUARE / 12))
|
|
facingOffset.y = 1;
|
|
else
|
|
facingOffset.y = 0;
|
|
|
|
selectedSquare.x = divRoundDown(player.mCamera.position.x,UNITS_PER_SQUARE) + facingOffset.x;
|
|
selectedSquare.y = divRoundDown(player.mCamera.position.y,UNITS_PER_SQUARE) + facingOffset.y;
|
|
|
|
Vector2D moveOffset;
|
|
|
|
moveOffset.x = 0;
|
|
moveOffset.y = 0;
|
|
|
|
d.x = (d.x * horizontalStep) / UNITS_PER_SQUARE;
|
|
d.y = (d.y * horizontalStep) / UNITS_PER_SQUARE;
|
|
|
|
if (d.x == 0 && d.y == 0)
|
|
{
|
|
d.x = d.x > 0 ? horizontalStep : -1 * horizontalStep;
|
|
d.y = d.y > 0 ? horizontalStep : -1 * horizontalStep;
|
|
}
|
|
|
|
bool aButton = pokitto.aBtn();
|
|
|
|
if (pokitto.cBtn())
|
|
{
|
|
if (runReleased)
|
|
{
|
|
player.mRunning = !player.mRunning;
|
|
runReleased = false;
|
|
}
|
|
}
|
|
else
|
|
runReleased = true;
|
|
|
|
if (pokitto.upBtn())
|
|
{
|
|
if (aButton)
|
|
player.mCamera.shear = min(player.mCamera.shear + 10,60);
|
|
else
|
|
moveOffset = d;
|
|
}
|
|
else if (pokitto.downBtn())
|
|
{
|
|
if (aButton)
|
|
player.mCamera.shear = max(player.mCamera.shear - 10,-60);
|
|
else
|
|
{
|
|
moveOffset.x = -1 * d.x;
|
|
moveOffset.y = -1 * d.y;
|
|
}
|
|
}
|
|
else
|
|
player.mCamera.shear /= 2;
|
|
|
|
if (!aButton)
|
|
player.mCamera.shear /= 2;
|
|
|
|
int addition = 0;
|
|
|
|
if (pokitto.rightBtn())
|
|
addition = 1;
|
|
else if (pokitto.leftBtn())
|
|
addition = -1;
|
|
|
|
if (aButton)
|
|
{
|
|
d = angleToDirection(player.mCamera.direction + UNITS_PER_SQUARE / 4);
|
|
d.x = (d.x * horizontalStep * addition) / UNITS_PER_SQUARE;
|
|
d.y = (d.y * horizontalStep * addition) / UNITS_PER_SQUARE;
|
|
|
|
moveOffset = d;
|
|
}
|
|
else
|
|
player.mCamera.direction = wrap(player.mCamera.direction + addition * rotationStep,UNITS_PER_SQUARE);
|
|
|
|
Unit prevHeight = player.mCamera.height;
|
|
|
|
moveCameraWithCollision(&player.mCamera,moveOffset,player.mVericalSpeed,
|
|
floorHeightAt, 0, 1);
|
|
|
|
Unit heightDiff = player.mCamera.height - prevHeight;
|
|
|
|
if (heightDiff == 0)
|
|
player.mVericalSpeed = 0; // hit floor/ceiling
|
|
|
|
if (player.mVericalSpeed == 0 && pokitto.bBtn())
|
|
{
|
|
int16_t camX = divRoundDown(player.mCamera.position.x,UNITS_PER_SQUARE);
|
|
int16_t camY = divRoundDown(player.mCamera.position.y,UNITS_PER_SQUARE);
|
|
|
|
if (player.mCamera.height - CAMERA_COLL_HEIGHT_BELOW -
|
|
floorHeightAt(camX,camY) < 2)
|
|
player.mVericalSpeed = JUMP_SPEED; // jump
|
|
}
|
|
|
|
player.mVericalSpeed -= (dt * GRAVITY_ACCELERATION) / 1000; // gravity
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|