GSDP:GAM100/CProcessing/CP System GetDt() - Revision history

Rfulcher: Possible origin or child content: https://github.com/DigiPen-Faculty/CProcessing/wiki/System#CP_System_GetDt

2023-02-16T03:45:58Z

Possible origin or child content: https://github.com/DigiPen-Faculty/CProcessing/wiki/System#CP_System_GetDt

>Justin.chambers at 23:53, 25 July 2020

2020-07-25T23:53:18Z

>Justin.chambers at 23:37, 25 July 2020

2020-07-25T23:37:03Z

>Justin.chambers: New page: {{GSDP:GAM100API.css}} =CP_System_GetDt()= ==Description== Returns the elapsed time from the last frame. ==Example== void update(void) { // print the curr...

2020-07-25T20:50:06Z

New page: {{GSDP:GAM100API.css}} =CP_System_GetDt()= ==Description== Returns the elapsed time from the last frame. ==Example== <syntaxhighlight lang='c'> void update(void) { // print the curr...

New page

{{GSDP:GAM100API.css}}
=CP_System_GetDt()=

==Description==
Returns the elapsed time from the last frame.

==Example==
<syntaxhighlight lang='c'>
void update(void)
{
// print the current frame rate to the center of the window
CP_Settings_TextSize(200);
CP_Settings_TextAlignment(CP_TEXT_ALIGN_H_CENTER, CP_TEXT_ALIGN_V_MIDDLE);
CP_Settings_Background(CP_Color_Create(200, 200, 200, 255));
CP_Settings_Fill(CP_Color_Create(100, 20, 100, 255));

float currentFrameRate = CP_System_GetFrameRate();

char buffer[16] = { 0 };
sprintf_s(buffer, _countof(buffer), "%.1f", currentFrameRate );
CP_Font_DrawText(buffer, 200, 200);
}
</syntaxhighlight>

====Related====

* [[GSDP:GAM100/CProcessing |Main Page ]]
* [[GSDP:GAM100/CProcessing/CP_System_GetFrameCount() |CP_System_GetFrameCount() ]]
* [[GSDP:GAM100/CProcessing/CP_System_GetFrameRate() |CP_System_GetFrameRate() ]]
* [[GSDP:GAM100/CProcessing/CP_System_SetFrameRate() |CP_System_SetFrameRate() ]]
* [[GSDP:GAM100/CProcessing/CP_System_GetMillis() |CP_System_GetMillis() ]]
* [[GSDP:GAM100/CProcessing/CP_System_GetSeconds() |CP_System_GetSeconds() ]]
* [[GSDP:GAM100/CProcessing/CP_Settings_TextSize() |CP_Settings_TextSize() ]]
* [[GSDP:GAM100/CProcessing/CP_Settings_TextAlignment() |CP_Settings_TextAlignment() ]]
* [[GSDP:GAM100/CProcessing/CP_Settings_Background() |CP_Settings_Background() ]]
* [[GSDP:GAM100/CProcessing/CP_Settings_Fill() |CP_Settings_Fill() ]]
* [[GSDP:GAM100/CProcessing/CP_Font_DrawText() |CP_Font_DrawText() ]]

@@ Line 1: / Line 1: @@
 {{GSDP:GAM100API.css}}
 =CP_System_GetDt()=
 ==Description==

@@ Line 31: / Line 31: @@
 </syntaxhighlight>
-====Related====
+==Related==
 * [[GSDP:GAM100/CProcessing       |Main Page           ]]

@@ Line 3: / Line 3: @@
 ==Description==
-Returns the elapsed time from the last frame.
+Returns the elapsed time from the last frame.  This is very important when making frame independent calculations such as movement or physics.
 ==Example==
 <syntaxhighlight lang='c'>
 void update(void)
+{
-     // print the current frame rate to the center of the window
+     // clear the background
      CP_Settings_Background(CP_Color_Create(200, 200, 200, 255));
-     CP_Settings_Fill(CP_Color_Create(100, 20, 100, 255));
+    // get dt and then print total elapsed time
-     float currentFrameRate = CP_System_GetFrameRate();
+     float currentElapsedTime = CP_System_GetDt();
      char buffer[16] = { 0 };
-     sprintf_s(buffer, _countof(buffer), "%.1f", currentFrameRate );
+     sprintf_s(buffer, _countof(buffer), "%.2f", totalElapsedTime);
      CP_Font_DrawText(buffer, 200, 200);
+}