array-in-a-matrix/SimpleDrawU
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comments and better welcome message

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array-in-a-matrix 2024-02-20 23:05:00 -05:00
parent 99dfe19e6a
commit 5f552e8b2c
1 changed files with 29 additions and 6 deletions
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35
main.c
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@ -8,19 +8,22 @@
#include <whb/proc.h>
void quit(void);
void welcome(OSScreenID screen);
void drawScreen(OSScreenID screen, VPADTouchData gamepad, int color);
int main(int argc, char **argv)
{
// initialize ProcUI and OSScreen
WHBProcInit();
OSScreenInit();
// allocate memory to render both displays and align them
size_t tvBufferSize = OSScreenGetBufferSizeEx(SCREEN_TV);
size_t drcBufferSize = OSScreenGetBufferSizeEx(SCREEN_DRC);
void *tvBuffer = memalign(0x100, tvBufferSize);
void *drcBuffer = memalign(0x100, drcBufferSize);
// free used video memory and deinitialize OSScreen and ProcUI
void quit(void)
{
if (tvBuffer)
@ -31,15 +34,18 @@ int main(int argc, char **argv)
WHBProcShutdown();
};
// check if memory allocation was successful otherwise kill program
if (!tvBuffer || !drcBuffer)
{
quit();
return 1;
}
// tell the screens where the allocated memory is
OSScreenSetBufferEx(SCREEN_TV, tvBuffer);
OSScreenSetBufferEx(SCREEN_DRC, drcBuffer);
// enable control of the displays
OSScreenEnableEx(SCREEN_TV, true);
OSScreenEnableEx(SCREEN_DRC, true);
@ -50,9 +56,23 @@ int main(int argc, char **argv)
bool vpad_fatal = false;
uint32_t penColor = 0xFFFFFF00;
OSScreenPutFontEx(SCREEN_TV, 0, 0, "SimpleDrawU (TV).");
OSScreenPutFontEx(SCREEN_DRC, 0, 0, "SimpleDrawU (Gamepad).");
// welcome message
void welcome(OSScreenID screen)
{
OSScreenPutFontEx(screen, 0, 0, "Welcome to SimpleDrawU!");
OSScreenPutFontEx(screen, 0, 1, "A is red.");
OSScreenPutFontEx(screen, 0, 2, "B is yellow.");
OSScreenPutFontEx(screen, 0, 3, "X is blue.");
OSScreenPutFontEx(screen, 0, 4, "Y is green.");
OSScreenPutFontEx(screen, 0, 5, "Plus is white.");
OSScreenPutFontEx(screen, 0, 6, "Minus is black (erase).");
OSScreenPutFontEx(screen, 0, 7, "Press both Plus and Minus");
OSScreenPutFontEx(screen, 0, 8, "to clear the screen, enjoy!");
}
welcome(SCREEN_TV);
welcome(SCREEN_DRC);
// define color palette
enum penColor
{
white = 0xFFFFFF00,
@ -63,6 +83,7 @@ int main(int argc, char **argv)
green = 0x86B46000,
};
// draw pixels to screen
void drawScreen(OSScreenID screen, VPADTouchData gamepad, int color)
{
OSScreenPutPixelEx(screen, gamepad.x - 1, gamepad.y - 1, color);
@ -76,8 +97,10 @@ int main(int argc, char **argv)
OSScreenPutPixelEx(screen, gamepad.x + 1, gamepad.y - 1, color);
};
// while ProcUI is running
while (WHBProcIsRunning())
{
// read gamepad inputs and check if error
VPADRead(VPAD_CHAN_0, &status, 1, &error);
switch (error)
{
@ -107,8 +130,8 @@ int main(int argc, char **argv)
// clear screen
if ((status.hold & VPAD_BUTTON_PLUS) && (status.hold & VPAD_BUTTON_MINUS))
{
OSScreenClearBufferEx(SCREEN_TV, 0x00000000);
OSScreenClearBufferEx(SCREEN_DRC, 0x00000000);
OSScreenClearBufferEx(SCREEN_TV, black);
OSScreenClearBufferEx(SCREEN_DRC, black);
}
// select color
@ -144,9 +167,9 @@ int main(int argc, char **argv)
drawScreen(SCREEN_DRC, gamepadTouchScreen, penColor);
}
// commit drawing to the screen
DCFlushRange(tvBuffer, tvBufferSize);
DCFlushRange(drcBuffer, drcBufferSize);
OSScreenFlipBuffersEx(SCREEN_TV);
OSScreenFlipBuffersEx(SCREEN_DRC);
}