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This commit is contained in:
Miloslav Ciz 2023-09-11 20:56:04 +02:00
parent afecda260e
commit 7bb028fad4
5 changed files with 684 additions and 7 deletions
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61
game.h
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@ -8,6 +8,7 @@
#define _LCR_GAME_H
#include "map.h"
#include "assets.h"
#define LCR_KEY_UP 0x00
#define LCR_KEY_RIGHT 0x01
@ -73,13 +74,36 @@ uint8_t _LCR_keyStates[LCR_KEYS_TOTAL]; /**< Assures unchanging key states
during a single frame. */
/**
Internal pixel drawing function that checks for out-of-screen coordinates.
Internal pixel drawing function that takes into account things like subdivided
resolution etc. This function does not check for out-of-screen coordinates!
*/
static inline void _LCR_drawPixel(unsigned int x, unsigned int y,
void LCR_drawPixelUnsafe(unsigned int x, unsigned int y,
uint_fast16_t color)
{
if (x < LCR_SETTING_RESOLUTION_X && y < LCR_SETTING_RESOLUTION_Y)
LCR_drawPixel(x,y,color);
#if LCR_SETTING_RESOLUTION_SUBDIVIDE == 1
LCR_drawPixel(x,y,color);
#else
x *= LCR_SETTING_RESOLUTION_SUBDIVIDE;
y *= LCR_SETTING_RESOLUTION_SUBDIVIDE;
unsigned int x2 = x + LCR_SETTING_RESOLUTION_SUBDIVIDE;
for (int yy = y; yy < y + LCR_SETTING_RESOLUTION_SUBDIVIDE; ++yy)
for (int xx = x; xx < x2; ++xx)
LCR_drawPixel(xx,yy,color);
#endif
}
/**
Internal pixel drawing function that checks for out-of-screen coordinates. Use
this if the pixel can potentially lie of screen (however if you know it won't,
use the normal unsafe function in sake of performance).
*/
static inline void LCR_drawPixelSafe(unsigned int x, unsigned int y,
uint_fast16_t color)
{
if (x < LCR_EFFECTIVE_RESOLUTION_X && y < LCR_EFFECTIVE_RESOLUTION_Y)
LCR_drawPixelUnsafe(x,y,color);
}
void LCR_gameInit(void)
@ -92,14 +116,37 @@ void LCR_gameEnd(void)
{
}
void LCR_drawSky()
{
const uint16_t *pixel = LCR_skyImages + 256;
uint8_t odd = 1;
for (int y = 0; y < 128; ++y)
for (int x = 0; x < 128; ++x)
{
LCR_drawPixelUnsafe(x,y,
LCR_skyImages[
odd ? (*pixel & 0x00ff) : (*pixel >> 8) ]
);
if (odd)
odd = 0;
else
{
odd = 1;
pixel++;
}
}
}
uint8_t LCR_gameStep(uint32_t time)
{
for (int i = 0; i < LCR_KEYS_TOTAL; ++i)
_LCR_keyStates[i] = LCR_keyPressed(i);
for (int i = 0; i < 100; ++i)
for (int j = 0; j < 50; ++j)
_LCR_drawPixel(i,j,0x00ff);
LCR_drawSky();
return 1;
}