Difference between revisions of "GSDP:GAM100/CProcessing/CP System GetDt()"
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< GSDP:GAM100 | CProcessing
>Justin.chambers (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...) |
>Justin.chambers |
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| Line 3: | Line 3: | ||
==Description== | ==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== | ==Example== | ||
<syntaxhighlight lang='c'> | <syntaxhighlight lang='c'> | ||
| + | void init(void) | ||
| + | { | ||
| + | // initialize settings | ||
| + | CP_Settings_TextSize(150); | ||
| + | CP_Settings_TextAlignment(CP_TEXT_ALIGN_H_CENTER, CP_TEXT_ALIGN_V_MIDDLE); | ||
| + | CP_Settings_Fill(CP_Color_Create(100, 20, 100, 255)); | ||
| + | } | ||
| + | |||
void update(void) | void update(void) | ||
{ | { | ||
| − | // | + | // clear the background |
| − | |||
| − | |||
CP_Settings_Background(CP_Color_Create(200, 200, 200, 255)); | CP_Settings_Background(CP_Color_Create(200, 200, 200, 255)); | ||
| − | + | ||
| − | + | // get dt and then print total elapsed time | |
| − | + | float currentElapsedTime = CP_System_GetDt(); | |
| + | static float totalElapsedTime = 0; | ||
| + | totalElapsedTime += currentElapsedTime; | ||
char buffer[16] = { 0 }; | char buffer[16] = { 0 }; | ||
| − | sprintf_s(buffer, _countof(buffer), "%. | + | sprintf_s(buffer, _countof(buffer), "%.2f", totalElapsedTime); |
CP_Font_DrawText(buffer, 200, 200); | CP_Font_DrawText(buffer, 200, 200); | ||
} | } | ||
Revision as of 16:37, 25 July 2020
CP_System_GetDt()
Description
Returns the elapsed time from the last frame. This is very important when making frame independent calculations such as movement or physics.
Example
void init(void)
{
// initialize settings
CP_Settings_TextSize(150);
CP_Settings_TextAlignment(CP_TEXT_ALIGN_H_CENTER, CP_TEXT_ALIGN_V_MIDDLE);
CP_Settings_Fill(CP_Color_Create(100, 20, 100, 255));
}
void update(void)
{
// clear the background
CP_Settings_Background(CP_Color_Create(200, 200, 200, 255));
// get dt and then print total elapsed time
float currentElapsedTime = CP_System_GetDt();
static float totalElapsedTime = 0;
totalElapsedTime += currentElapsedTime;
char buffer[16] = { 0 };
sprintf_s(buffer, _countof(buffer), "%.2f", totalElapsedTime);
CP_Font_DrawText(buffer, 200, 200);
}
