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Enumify all fade modes

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This removes the magic numbers previously used for controlling the fade
mode, which are really not readable at all unless you already know what
they mean.

0: FADE_NONE
1: FADE_FULLY_BLACK
2: FADE_START_FADEOUT
3: FADE_FADING_OUT
4: FADE_START_FADEIN
5: FADE_FADING_IN

There is also the macro FADEMODE_IS_FADING, which indicates when the
intention is to only check if the game is fading right now, which wasn't
clearly conveyed previously.

I also took the opportunity to clean up the style of any lines I
touched. This included rewriting if-else chains into case-switches,
turning one-liner if-then statements into proper blocks, fixing up
comments, and even commenting the `fademode == FADE_NONE` on the tower
spike checks (which, it was previously undocumented why that check was
there, but I think I know why it's there).

As for type safety, we already get some by transforming the variable
types into the enum. Assignment is prohibited without a cast. But,
apparently, comparison is perfectly legal and won't even give so much as
a warning. To work around this and make absolutely sure I made all
existing comparisons now use the enum, I temporarily changed it to be an
`enum class`, which is a C++11 feature that makes it so all comparisons
are illegal. Unfortunately, it scopes them in a namespace with the same
name as a class, so I had to temporarily define macros to make sure my
existing code worked. I also had to temporarily up the standard in
CMakeLists.txt to get it to compile. But after all that was done, I
found the rest of the places where a comparison to an integer was used,
and fixed them.
This commit is contained in:
Misa
2022-04-25 00:57:47 -07:00
parent af1cebf7a1
commit 98cb415675
9 changed files with 159 additions and 112 deletions
Download Patch File Download Diff File Expand all files Collapse all files

77
desktop_version/src/Graphics.cpp
View File

@@ -97,8 +97,8 @@ void Graphics::init(void)
SDL_memset(fadebars, 0, sizeof(fadebars));
setfade(0);
fademode = 0;
ingame_fademode = 0;
fademode = FADE_NONE;
ingame_fademode = FADE_NONE;
// initialize everything else to zero
backBuffer = NULL;
@@ -1451,68 +1451,67 @@ void Graphics::createtextboxflipme(
void Graphics::drawfade(void)
{
int usethisamount = lerp(oldfadeamount, fadeamount);
if ((fademode == 1)||(fademode == 4))
switch (fademode)
{
case FADE_FULLY_BLACK:
case FADE_START_FADEIN:
ClearSurface(backBuffer);
}
else if(fademode==3)
{
break;
case FADE_FADING_OUT:
for (size_t i = 0; i < SDL_arraysize(fadebars); i++)
{
FillRect(backBuffer, fadebars[i], i * 16, usethisamount, 16, 0x000000 );
}
}
else if(fademode==5 )
{
break;
case FADE_FADING_IN:
for (size_t i = 0; i < SDL_arraysize(fadebars); i++)
{
FillRect(backBuffer, fadebars[i]-usethisamount, i * 16, 500, 16, 0x000000 );
}
break;
case FADE_NONE:
case FADE_START_FADEOUT:
break;
}
}
void Graphics::processfade(void)
{
oldfadeamount = fadeamount;
if (fademode > 1)
switch (fademode)
{
if (fademode == 2)
case FADE_START_FADEOUT:
for (size_t i = 0; i < SDL_arraysize(fadebars); i++)
{
//prepare fade out
for (size_t i = 0; i < SDL_arraysize(fadebars); i++)
{
fadebars[i] = -int(fRandom() * 12) * 8;
}
setfade(0);
fademode = 3;
fadebars[i] = -int(fRandom() * 12) * 8;
}
else if (fademode == 3)
setfade(0);
fademode = FADE_FADING_OUT;
break;
case FADE_FADING_OUT:
fadeamount += 24;
if (fadeamount > 416)
{
fadeamount += 24;
if (fadeamount > 416)
{
fademode = 1; //faded
}
fademode = FADE_FULLY_BLACK;
}
else if (fademode == 4)
break;
case FADE_START_FADEIN:
for (size_t i = 0; i < SDL_arraysize(fadebars); i++)
{
//prepare fade in
for (size_t i = 0; i < SDL_arraysize(fadebars); i++)
{
fadebars[i] = 320 + int(fRandom() * 12) * 8;
}
setfade(416);
fademode = 5;
fadebars[i] = 320 + int(fRandom() * 12) * 8;
}
else if (fademode == 5)
setfade(416);
fademode = FADE_FADING_IN;
break;
case FADE_FADING_IN:
fadeamount -= 24;
if (fadeamount <= 0)
{
fadeamount -= 24;
if (fadeamount <= 0)
{
fademode = 0; //normal
}
fademode = FADE_NONE;
}
case FADE_NONE:
case FADE_FULLY_BLACK:
break;
}
}