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BloccSpacc
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Proper frametimes handling

This commit is contained in:
octospacc 2022-08-03 15:51:56 +02:00
parent 374cc9fa9a
commit 5d630b66f0
2 changed files with 17 additions and 5 deletions
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17
Source/Main.c
View File

@ -13,6 +13,7 @@
#define ScreenBits 16
int ScreenWidth = 512;
int ScreenHeight = 512;
#define GameTick 30
SDL_Surface * Screen = NULL;
SDL_Event Event;
@ -29,6 +30,18 @@ SDL_Color DebugTextColor = { 80, 80, 80 };
bool Quit, Redraw, DebugMode;
// <https://www.libsdl.org/release/SDL-1.2.15/docs/html/guidetimeexamples.html>
static Uint32 NextTime;
Uint32 TimeLeft() {
Uint32 Now;
Now = SDL_GetTicks();
if ( NextTime <= Now ) {
return 0;
} else {
return NextTime - Now;
}
}
struct UsedKeys {
bool Up, Down, Left, Right, Above, Below;
bool Place, Break;
@ -259,6 +272,7 @@ int main( int argc, char* args[] ) {
Redraw = true;
while ( !Quit ) {
NextTime = SDL_GetTicks() + GameTick;
while ( SDL_PollEvent( & Event ) ) {
Redraw = true;
if ( Event.type == SDL_QUIT ) {
@ -321,7 +335,8 @@ int main( int argc, char* args[] ) {
}
Redraw = false;
}
SDL_Delay( 16 ); // TODO: proper framerate management
SDL_Delay( TimeLeft() );
NextTime += GameTick;
}
printf("[I] Exiting!\n");

5
Source/Util.h
View File

@ -10,8 +10,7 @@ struct xyz {
int x, y, z;
};
/*** Thanks to <https://gist.github.com/jordwest/8a12196436ebcf8df98a2745251915b5> for the maths! ***/
// <https://gist.github.com/jordwest/8a12196436ebcf8df98a2745251915b5>
struct xyz OrthoToIso ( int x, int y, int z, int Multiply ) {
struct xyz xyz;
xyz.x = x * 1 * 0.5 * Multiply + z * -1 * 0.5 * Multiply;
@ -20,5 +19,3 @@ struct xyz OrthoToIso ( int x, int y, int z, int Multiply ) {
return xyz;
}
/*** ******************************************************************************************** ***/