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examples: core_loading_thread: use symbolic names for state machine states

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And while at it, use a switch clause to make the state machine
structure clearer.
This commit is contained in:
Ahmad Fatoum 2019-05-04 17:15:48 +02:00
parent 0fe409bfa9
commit 53d9beb534
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GPG key ID: C3EAC3DE9321D59B
1 changed files with 25 additions and 22 deletions
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39
examples/core/core_loading_thread.c
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@ -34,7 +34,7 @@ int main()
pthread_t threadId; // Loading data thread id
int state = 0; // 0-Waiting, 1-Loading, 2-Finished
enum { STATE_WAITING, STATE_LOADING, STATE_FINISHED } state = STATE_WAITING;
int framesCounter = 0;
SetTargetFPS(60);
@ -45,35 +45,35 @@ int main()
{
// Update
//----------------------------------------------------------------------------------
if (state == 0)
switch (state)
{
case STATE_WAITING:
if (IsKeyPressed(KEY_ENTER))
{
int error = pthread_create(&threadId, NULL, &LoadDataThread, NULL);
if (error != 0) TraceLog(LOG_ERROR, "Error creating loading thread");
else TraceLog(LOG_INFO, "Loading thread initialized successfully");
state = 1;
state = STATE_LOADING;
}
}
else if (state == 1)
{
break;
case STATE_LOADING:
framesCounter++;
if (dataLoaded)
{
framesCounter = 0;
state = 2;
state = STATE_FINISHED;
}
}
else if (state == 2)
{
break;
case STATE_FINISHED:
if (IsKeyPressed(KEY_ENTER))
{
// Reset everything to launch again
dataLoaded = false;
dataProgress = 0;
state = 0;
state = STATE_WAITING;
}
break;
}
//----------------------------------------------------------------------------------
@ -83,16 +83,19 @@ int main()
ClearBackground(RAYWHITE);
if (state == 0) DrawText("PRESS ENTER to START LOADING DATA", 150, 170, 20, DARKGRAY);
else if (state == 1)
{
switch(state) {
case STATE_WAITING:
DrawText("PRESS ENTER to START LOADING DATA", 150, 170, 20, DARKGRAY);
break;
case STATE_LOADING:
DrawRectangle(150, 200, dataProgress, 60, SKYBLUE);
if ((framesCounter/15)%2) DrawText("LOADING DATA...", 240, 210, 40, DARKBLUE);
}
else if (state == 2)
{
if ((framesCounter/15)%2)
DrawText("LOADING DATA...", 240, 210, 40, DARKBLUE);
break;
case STATE_FINISHED:
DrawRectangle(150, 200, 500, 60, LIME);
DrawText("DATA LOADED!", 250, 210, 40, GREEN);
break;
}
DrawRectangleLines(150, 200, 500, 60, DARKGRAY);