452 lines
20 KiB
C++
452 lines
20 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
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*/
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//#define RAYCAST_TINY
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#include <stdio.h>
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#include "raycastlib.h"
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#include "Pokitto.h"
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#define SUBSAMPLE 2
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const unsigned char image[] =
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{ 32, 32 // width, height
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};
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const unsigned char image2[] =
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{ 32, 32 // width, height
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,0xff,0xff,0xff,0xbf,0xff,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf
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,0x6e,0x6e,0x24,0x25,0x76,0x77,0x77,0x76,0x76,0x76,0x6e,0x6e,0x6e,0x6e
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,0x76,0x1c,0x6e,0x6d,0x6d,0x6d,0x1c,0x24,0x76,0x76,0x76,0x76,0x76,0x76
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|
|
,0xbf,0xbf,0x6e,0x76,0x76,0x24,0x6d,0x6d,0x6d,0x6d,0x1c,0x1c,0x6e,0x6e
|
|
,0x6e,0x6e,0x76,0x76,0x77,0x76,0x76,0x76,0x6e,0x6e,0x6d,0x6e,0x76,0x76
|
|
,0x6e,0x6e,0x6e,0x6e,0xbf,0xbf,0x6e,0x76,0x76,0x1c,0x6d,0x6d,0x6d,0x6d
|
|
,0x1c,0x1c,0x6d,0x6d,0x6d,0x6d,0x6e,0x6e,0x76,0x76,0x76,0x76,0x76,0x6e
|
|
,0x6e,0x6e,0x76,0x6e,0x6e,0x76,0x76,0x76,0xbf,0xbf,0x6e,0x6e,0x6e,0x1c
|
|
,0x6e,0x6d,0x6d,0x6d,0x1c,0x1c,0x6d,0x6d,0x6d,0x6d,0x6d,0x6d,0x6e,0x6e
|
|
,0x76,0x77,0x77,0x76,0x6e,0x6e,0x6e,0x6e,0x6e,0x6e,0x6e,0x6e,0xbf,0xbf
|
|
,0x6e,0x6e,0x6e,0x1c,0x6e,0x6d,0x6d,0x65,0x1c,0x24,0x6d,0x6d,0x6d,0x6d
|
|
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|
|
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|
|
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|
|
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|
|
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|
|
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|
|
,0x6d,0x1c,0x6e,0x6d,0x6d,0x6d,0x24,0x1c,0x6d,0x6d,0x6d,0x6d,0x6d,0x6e
|
|
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|
|
,0xbf,0xbf,0x6d,0x6d,0x6d,0x1c,0x6e,0x6d,0x6d,0x65,0x24,0x24,0x76,0x76
|
|
,0x76,0x77,0xbf,0xbf,0xbf,0xbf,0xbf,0x77,0x77,0x76,0x76,0x76,0x76,0x76
|
|
,0x76,0x77,0x77,0x77,0x77,0xbf,0x6d,0x6d,0x6d,0x1c,0x6e,0x6e,0x6d,0x65
|
|
,0x25,0x6d,0x77,0xb7,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0x77,0x76,0x77,0x77
|
|
,0x77,0x77,0x76,0x76,0x76,0x76,0x76,0x76,0xbf,0x77,0x65,0x65,0x65,0x1c
|
|
,0x76,0x6e,0x6d,0x6d,0x6d,0x6d,0x6d,0x6e,0x76,0x6e,0x6e,0x6d,0x6d,0x6d
|
|
,0x65,0x65,0x65,0x25,0x25,0x25,0x24,0x25,0x25,0x25,0x25,0x25,0x65,0x65
|
|
,0x6d,0x6d,0x6d,0x1c,0x76,0x6d,0x65,0x65,0x65,0x6d,0x6d,0x6e,0x6e,0x6d
|
|
,0x6d,0x65,0x65,0x6d,0x6d,0x6d,0x6d,0x6d,0x25,0x25,0x24,0x25,0x65,0x6d
|
|
,0x25,0x65,0x6d,0x6d,0x6d,0x6d,0x6d,0x1c,0x6e,0x6d,0x6d,0x6d,0x6d,0x6e
|
|
,0x6e,0x6e,0x6d,0x6d,0x6e,0x6e,0x76,0x76,0x76,0x6e,0x76,0x6e,0x76,0x6d
|
|
,0x6d,0x6d,0x6d,0x6d,0x25,0x65,0x6d,0x65,0x65,0x65,0x6d,0x1c,0x25,0x6d
|
|
,0x65,0x6d,0x6d,0x6d,0x6d,0x25,0x24,0x25,0x25,0x6d,0x6d,0x6e,0x6e,0x76
|
|
,0x6d,0x6e,0x6e,0x6d,0x24,0x24,0x24,0x24,0x24,0x1c,0x1c,0x1c,0x24,0x1c
|
|
,0x1c,0x1c
|
|
};
|
|
|
|
const unsigned char image3[] =
|
|
{ 32, 32 // width, height
|
|
,0x65,0x1d,0x1c,0x25,0x1d,0x1b,0x0a,0x0a,0x14,0x25,0x1d,0x0a,0x14,0x12
|
|
,0x09,0x14,0x66,0x6f,0x1b,0x13,0x1c,0x66,0x77,0x6e,0x6e,0x1d,0x25,0x66
|
|
,0x25,0x0a,0x1e,0x25,0x1d,0x14,0x1d,0x14,0x65,0x0a,0x14,0x15,0x14,0x02
|
|
,0x1c,0x0a,0x6f,0x6f,0x66,0x6f,0x6f,0x6f,0x25,0x0a,0x6e,0x77,0x7f,0x67
|
|
,0x67,0x66,0x66,0x6e,0x25,0x25,0x13,0x0a,0x01,0x13,0x1c,0x13,0x14,0x01
|
|
,0x0b,0x1d,0x5d,0x1d,0x66,0x66,0x6f,0x6f,0x6f,0x77,0x6f,0x6e,0x1d,0x01
|
|
,0x77,0x6f,0x67,0x6f,0x26,0x66,0x1c,0x25,0x5e,0x1d,0x1d,0x1c,0x1c,0x6e
|
|
,0x77,0x6e,0x2e,0x1d,0x14,0x0a,0x14,0x25,0x66,0x67,0x77,0x67,0x6e,0x77
|
|
,0x25,0x6e,0x1c,0x1c,0x6e,0x77,0x77,0x7f,0x67,0x66,0x6e,0x6e,0x1d,0x66
|
|
,0x14,0x1d,0x12,0x6e,0x67,0x6f,0x26,0x65,0x6e,0x01,0x14,0x1d,0x65,0x66
|
|
,0x6f,0x77,0x2f,0x2e,0x1c,0x25,0x1d,0x13,0x77,0x6f,0x77,0x6f,0x6f,0x6f
|
|
,0x66,0x1d,0x6e,0x14,0x65,0x1c,0x0a,0x66,0x6f,0x6f,0x77,0x1e,0x65,0x5d
|
|
,0x0a,0x09,0x6e,0x25,0x67,0x1d,0x6e,0x25,0x5d,0x0a,0x14,0x0a,0x6f,0x77
|
|
,0x77,0x77,0x77,0x6e,0x26,0x1d,0x25,0x25,0x66,0x25,0x01,0x6f,0x6f,0x77
|
|
,0x6d,0x6f,0x1d,0x6e,0x1d,0x13,0x1c,0x13,0x6e,0x77,0x26,0x1c,0x65,0x13
|
|
,0x01,0x6e,0x25,0x26,0x6f,0x6f,0x67,0x6f,0x66,0x6e,0x1c,0x66,0x66,0x1d
|
|
,0x13,0x77,0x77,0x6f,0x67,0x6e,0x66,0x5c,0x5d,0x1c,0x09,0x1c,0x13,0x13
|
|
,0x1c,0x0a,0x01,0x12,0x25,0x09,0x0a,0x6f,0x6e,0x6e,0x6f,0x6f,0x66,0x25
|
|
,0x25,0x6e,0x25,0x1c,0x14,0x77,0x67,0x77,0x6f,0x67,0x1d,0x25,0x1c,0x1d
|
|
,0x1c,0x24,0x0a,0x66,0x6f,0x65,0x66,0x6e,0x25,0x1d,0x1c,0x0b,0x5d,0x66
|
|
,0x1d,0x5d,0x25,0x13,0x66,0x1d,0x1d,0x14,0x6e,0x6f,0x77,0x77,0x25,0x66
|
|
,0x66,0x1d,0x6e,0x66,0x1d,0x14,0x09,0x77,0x66,0x6f,0x1e,0x6f,0x66,0x65
|
|
,0x1d,0x25,0x13,0x0a,0x6e,0x1d,0x1c,0x1d,0x1d,0x25,0x14,0x01,0x2e,0x66
|
|
,0x77,0x77,0x6f,0x66,0x1d,0x1e,0x1d,0x1d,0x14,0x25,0x13,0x6f,0x6f,0x6f
|
|
,0x6f,0x66,0x6e,0x25,0x1d,0x1c,0x14,0x01,0x14,0x0a,0x0a,0x14,0x09,0x09
|
|
,0x0a,0x1b,0x0b,0x66,0x66,0x1d,0x5e,0x65,0x66,0x26,0x65,0x1c,0x1c,0x1c
|
|
,0x12,0x6f,0x7f,0x6f,0x6f,0x6f,0x6f,0x66,0x66,0x25,0x1d,0x13,0x0a,0x25
|
|
,0x66,0x5e,0x1d,0x1c,0x14,0x0a,0x1c,0x13,0x13,0x1d,0x5d,0x14,0x14,0x1d
|
|
,0x5d,0x0b,0x0b,0x0b,0x1d,0x6f,0x6f,0x7f,0x6f,0x66,0x1d,0x66,0x1d,0x25
|
|
,0x1c,0x1d,0x01,0x26,0x6f,0x77,0x77,0x66,0x15,0x1d,0x1d,0x25,0x0a,0x01
|
|
,0x0b,0x1c,0x25,0x1b,0x1d,0x14,0x01,0x1d,0x66,0x77,0x7f,0x6f,0x77,0x65
|
|
,0x6f,0x6e,0x6e,0x25,0x1d,0x14,0x13,0x6f,0x7f,0x27,0x6f,0x77,0x65,0x65
|
|
,0x2e,0x0a,0x14,0x25,0x5d,0x25,0x14,0x14,0x0a,0x0b,0x1d,0x6e,0x6f,0x6f
|
|
,0x6f,0x77,0x6f,0x66,0x66,0x65,0x15,0x66,0x1d,0x65,0x01,0x6f,0x6f,0x7f
|
|
,0x66,0x6f,0x7f,0x6f,0x1d,0x01,0x77,0x67,0x6f,0x65,0x6e,0x25,0x01,0x65
|
|
,0x6e,0x77,0x66,0x66,0x6f,0x77,0x6f,0x6f,0x1d,0x25,0x26,0x1d,0x14,0x14
|
|
,0x25,0x6f,0x6f,0x77,0x6f,0x66,0x77,0x1d,0x13,0x6e,0x66,0x7f,0x6f,0x6e
|
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,0x66,0x25,0x14,0x2d,0x77,0x7f,0x5e,0x77,0x6e,0x66,0x6e,0x66,0x1d,0x65
|
|
,0x25,0x1b,0x1d,0x02,0x66,0x7f,0x6f,0x7f,0x66,0x7f,0x66,0x66,0x0b,0x66
|
|
,0x6f,0x6f,0x26,0x66,0x25,0x1d,0x1c,0x09,0x66,0x77,0x6e,0x77,0x6e,0x6f
|
|
,0x6f,0x25,0x1d,0x6e,0x5e,0x25,0x0a,0x01,0x77,0x6f,0x66,0x67,0x66,0x77
|
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,0x25,0x65,0x13,0x01,0x77,0x6f,0x1d,0x66,0x66,0x14,0x25,0x0a,0x1c,0x5e
|
|
,0x66,0x6f,0x66,0x6e,0x66,0x66,0x6e,0x1d,0x25,0x0a,0x09,0x1d,0x66,0x6f
|
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,0x6f,0x66,0x66,0x1d,0x1d,0x6e,0x65,0x12,0x66,0x66,0x77,0x6e,0x5d,0x1d
|
|
,0x0a,0x09,0x1c,0x1c,0x25,0x6e,0x6f,0x6e,0x1d,0x25,0x1d,0x65,0x13,0x1d
|
|
,0x1c,0x1c,0x65,0x6f,0x77,0x67,0x6e,0x6e,0x1d,0x66,0x1d,0x02,0x1b,0x66
|
|
,0x66,0x66,0x66,0x14,0x01,0x14,0x6e,0x65,0x14,0x13,0x13,0x25,0x1d,0x0a
|
|
,0x0b,0x13,0x1d,0x6e,0x66,0x13,0x1c,0x77,0x6e,0x1d,0x65,0x1c,0x1d,0x1d
|
|
,0x1d,0x01,0x13,0x14,0x1c,0x1c,0x25,0x13,0x12,0x66,0x6f,0x6f,0x25,0x25
|
|
,0x13,0x14,0x0a,0x01,0x6e,0x65,0x77,0x67,0x77,0x66,0x0b,0x0a,0x66,0x1d
|
|
,0x66,0x1d,0x6e,0x14,0x13,0x1b,0x66,0x66,0x13,0x02,0x0a,0x01,0x1c,0x6f
|
|
,0x6f,0x7f,0x26,0x26,0x1d,0x01,0x66,0x6e,0x6f,0x6f,0x77,0x67,0x66,0x2e
|
|
,0x66,0x09,0x0a,0x13,0x65,0x1d,0x1c,0x0a,0x66,0x6e,0x77,0x6f,0x6f,0x1d
|
|
,0x6e,0x25,0x0b,0x66,0x77,0x6e,0x25,0x25,0x66,0x0a,0x6f,0x77,0x77,0x77
|
|
,0x66,0x6f,0x67,0x66,0x25,0x1d,0x1b,0x09,0x1c,0x0a,0x14,0x0a,0x6f,0x77
|
|
,0x6f,0x7f,0x6f,0x77,0x6f,0x6e,0x01,0x66,0x7f,0x6f,0x6f,0x66,0x1d,0x09
|
|
,0x66,0x77,0x7f,0x67,0x66,0x66,0x6e,0x77,0x66,0x6f,0x26,0x76,0x1d,0x25
|
|
,0x13,0x1b,0x6e,0x77,0x77,0x6f,0x6f,0x6e,0x6f,0x25,0x1c,0x1c,0x77,0x77
|
|
,0x1d,0x65,0x25,0x0a,0x2e,0x6f,0x6f,0x7f,0x6e,0x1d,0x1c,0x6e,0x66,0x6e
|
|
,0x1d,0x66,0x1d,0x66,0x65,0x12,0x65,0x77,0x6f,0x77,0x66,0x77,0x6e,0x25
|
|
,0x14,0x0a,0x5e,0x6f,0x77,0x66,0x66,0x0b,0x6e,0x6f,0x77,0x6f,0x6f,0x65
|
|
,0x65,0x1e,0x25,0x15,0x5e,0x24,0x65,0x1d,0x1d,0x1c,0x6f,0x77,0x6f,0x6f
|
|
,0x67,0x66,0x1d,0x25,0x25,0x01,0x6e,0x67,0x6f,0x66,0x65,0x14,0x6e,0x6e
|
|
,0x77,0x77,0x77,0x6e,0x66,0x25,0x6e,0x25,0x1d,0x1c,0x14,0x25,0x1c,0x0a
|
|
,0x77,0x77,0x6f,0x1d,0x66,0x25,0x13,0x1d,0x0b,0x0b,0x6f,0x6f,0x66,0x6e
|
|
,0x6e,0x1d,0x14,0x6e,0x66,0x6f,0x7f,0x67,0x66,0x25,0x66,0x1c,0x65,0x1b
|
|
,0x1c,0x13,0x0a,0x14,0x7f,0x6f,0x26,0x25,0x65,0x13,0x65,0x1c,0x1b,0x14
|
|
,0x67,0x6f,0x6e,0x66,0x1d,0x0a,0x13,0x14,0x66,0x6e,0x6e,0x6f,0x6d,0x6e
|
|
,0x1d,0x1d,0x13,0x13,0x25,0x0a,0x0a,0x6e,0x6f,0x6f,0x6e,0x1d,0x6e,0x5c
|
|
,0x5c,0x01,0x25,0x66,0x6f,0x66,0x66,0x6e,0x1d,0x14,0x12,0x1d,0x13,0x14
|
|
,0x12,0x6e,0x1c,0x0a,0x14,0x1d,0x0a,0x13,0x0a,0x1d,0x65,0x66,0x6f,0x6e
|
|
,0x1d,0x66,0x1c,0x1d,0x01,0x0a,0x14,0x1c,0x6f,0x25,0x1c,0x14,0x0a,0x13
|
|
,0x14,0x6e,0x5d,0x1c,0x13,0x13,0x09,0x13,0x0a,0x13,0x1d,0x1d,0x0a,0x14
|
|
,0x1d,0x25
|
|
};
|
|
|
|
uint8_t sampleImage(const unsigned char *image, Unit x, Unit y)
|
|
{
|
|
int32_t index = clamp(
|
|
image[1] * ((image[1] * y) / UNITS_PER_SQUARE) +
|
|
(image[0] * x) / UNITS_PER_SQUARE,
|
|
0, image[0] * image[1] - 1);
|
|
|
|
return image[2 + index];
|
|
}
|
|
|
|
// r: 3 bits, g: 3 bits, b: 2 bits
|
|
inline uint8_t rgbToIndex(uint8_t r, uint8_t g, uint8_t b)
|
|
{
|
|
return (r & 0b00000111) | ((g & 0b00000111) << 3) | ((b & 0b00000011) << 6);
|
|
}
|
|
|
|
inline uint8_t addIntensity(uint8_t color, int intensity)
|
|
{
|
|
uint8_t r = color & 0b00000111;
|
|
uint8_t g = (color & 0b00111000) >> 3;
|
|
uint8_t b = (color & 0b11000000) >> 6;
|
|
|
|
if (intensity >= 0)
|
|
{
|
|
r += intensity;
|
|
r = r > 7 ? 7 : r;
|
|
|
|
g += intensity;
|
|
g = g > 7 ? 7 : g;
|
|
|
|
b += intensity / 2;
|
|
b = b > 3 ? 3 : b;
|
|
}
|
|
else
|
|
{
|
|
intensity *= -1;
|
|
r = (intensity > r) ? 0 : r - intensity;
|
|
g = (intensity > g) ? 0 : g - intensity;
|
|
b = (intensity / 2) > b ? 0 : b - (intensity / 2);
|
|
}
|
|
|
|
return rgbToIndex(r,g,b);
|
|
}
|
|
|
|
class Level
|
|
{
|
|
public:
|
|
int16_t getHeight(int16_t x, int16_t y)
|
|
{
|
|
if (x > 12 || y > 12)
|
|
return max(x,y) - 10;
|
|
|
|
if (y < 5 && y > 0)
|
|
{
|
|
return y > 2 ? x : -x;
|
|
}
|
|
|
|
return (x < 0 || y < 0 || x > 9 || y > 9) ? 4 : 0;
|
|
}
|
|
};
|
|
|
|
class Character
|
|
{
|
|
public:
|
|
Camera mCamera;
|
|
|
|
Character()
|
|
{
|
|
mCamera.position.x = UNITS_PER_SQUARE * 4;
|
|
mCamera.position.y = UNITS_PER_SQUARE * 5;
|
|
mCamera.direction = 0;
|
|
mCamera.fovAngle = UNITS_PER_SQUARE / 4;
|
|
mCamera.height = UNITS_PER_SQUARE / 2;
|
|
mCamera.resolution.x = 110 / SUBSAMPLE;
|
|
mCamera.resolution.y = 88;
|
|
}
|
|
};
|
|
|
|
Pokitto::Core p;
|
|
Character player;
|
|
Level level;
|
|
|
|
Unit heightFunc(int16_t x, int16_t y)
|
|
{
|
|
return level.getHeight(x,y) * UNITS_PER_SQUARE / 4;
|
|
}
|
|
|
|
inline void pixelFunc(PixelInfo pixel)
|
|
{
|
|
uint8_t c;
|
|
|
|
Unit depth = pixel.depth - UNITS_PER_SQUARE;
|
|
|
|
if (depth < 0)
|
|
depth = 0;
|
|
|
|
int intensity = 7 - (depth * 7) / (UNITS_PER_SQUARE * 5);
|
|
|
|
if (intensity < 0)
|
|
intensity = 0;
|
|
|
|
if (pixel.isWall)
|
|
{
|
|
if ((pixel.hit.direction == 0 || pixel.hit.direction == 2))
|
|
intensity -= 2;
|
|
|
|
if (intensity < 0)
|
|
intensity = 0;
|
|
|
|
c = sampleImage(image2,pixel.hit.textureCoord,pixel.textureCoordY);
|
|
c = addIntensity(c,intensity - 3);
|
|
}
|
|
else
|
|
c = rgbToIndex(intensity/2,intensity,intensity/3);
|
|
|
|
uint8_t *buf = p.display.screenbuffer;
|
|
|
|
buf += pixel.position.x * SUBSAMPLE;
|
|
buf += pixel.position.y * p.display.width;
|
|
|
|
for (uint8_t i = 0; i < SUBSAMPLE - 1; ++i)
|
|
*buf++ = c;
|
|
|
|
*buf = c;
|
|
}
|
|
|
|
unsigned short pal[256];
|
|
|
|
void draw()
|
|
{
|
|
RayConstraints c;
|
|
|
|
c.maxHits = 16;
|
|
c.maxSteps = 16;
|
|
|
|
render(player.mCamera,heightFunc,pixelFunc,c);
|
|
}
|
|
|
|
int main()
|
|
{
|
|
p.begin();
|
|
|
|
for (uint8_t r = 0; r < 8; ++r)
|
|
for (uint8_t g = 0; g < 8; ++g)
|
|
for (uint8_t b = 0; b < 4; ++b)
|
|
pal[rgbToIndex(r,g,b)] = p.display.RGBto565(36 * r, 36 * g, 85 * b);
|
|
|
|
|
|
p.display.load565Palette(&pal[0]); // load a palette the same way as any other palette in any other screen mode
|
|
p.display.persistence = 1;
|
|
p.setFrameRate(60);
|
|
p.display.setFont(fontTiny);
|
|
|
|
while (p.isRunning())
|
|
{
|
|
if (p.update())
|
|
{
|
|
draw();
|
|
|
|
const int16_t step = max(UNITS_PER_SQUARE / 10,1);
|
|
const int16_t step2 = max(UNITS_PER_SQUARE / 50,1);
|
|
|
|
Vector2D d = angleToDirection(player.mCamera.direction);
|
|
|
|
d.x = (d.x * step) / UNITS_PER_SQUARE;
|
|
d.y = (d.y * step) / UNITS_PER_SQUARE;
|
|
|
|
if (d.x == 0 && d.y == 0)
|
|
{
|
|
d.x = d.x > 0 ? step : -step;
|
|
d.y = d.y > 0 ? step : -step;
|
|
}
|
|
|
|
if (p.upBtn())
|
|
{
|
|
player.mCamera.position.x += d.x;
|
|
player.mCamera.position.y += d.y;
|
|
}
|
|
else if (p.downBtn())
|
|
{
|
|
player.mCamera.position.x -= d.x;
|
|
player.mCamera.position.y -= d.y;
|
|
}
|
|
|
|
if (p.rightBtn())
|
|
player.mCamera.direction += step2;
|
|
else if (p.leftBtn())
|
|
player.mCamera.direction -= step2;
|
|
|
|
if (p.aBtn())
|
|
player.mCamera.height += step;
|
|
else if (p.bBtn())
|
|
player.mCamera.height -= step;
|
|
|
|
player.mCamera.height =
|
|
max(heightFunc(player.mCamera.position.x / UNITS_PER_SQUARE,player.mCamera.position.y / UNITS_PER_SQUARE) + UNITS_PER_SQUARE / 2,player.mCamera.height);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|