optimize erease

C/actions.cpp

@@ -1,10 +1,8 @@
 
-void setSample(int sample, int step) {
+void setSample(int sample) {
   if(setErease) {
-    for(int i=0; i<matrix[1]; i++) {
-      pattern[sample-1][i] = 0;
-    }
-    setErease = false;
+
+    ereaseSample = sample;
 
   } else if(selectPattern) {
 

C/inputs.cpp

@@ -1,16 +1,16 @@
 void inputActions(SDL_Event e) {
   switch (e.key.keysym.sym) {
     case SDLK_1:
-      setSample(1, step);
+      setSample(1);
       break;
     case SDLK_2:
-      setSample(2, step);
+      setSample(2);
       break;
     case SDLK_3:
-      setSample(3, step);
+      setSample(3);
       break;
     case SDLK_4:
-      setSample(4, step);
+      setSample(4);
       break;
 
     case SDLK_p:

C/main.cpp

@@ -22,6 +22,7 @@ bool play = false;
 bool setErease = false;
 bool selectPattern = false;
 bool selectBank = false;
+int ereaseSample = 0;
 int step = 0;
 
 #include "draw.cpp"
@@ -78,7 +79,7 @@ int main(int argc, char** argv) {
     }
 
     if(play) {
-      playPattern(&timer, stepDuration, &step);
+      playPattern(&timer, stepDuration);
     }
   }
 

C/players.cpp

@@ -1,15 +1,23 @@
 
-void playPattern(int *timer, int duration, int *step) {
+void playPattern(int *timer, int duration) {
   *timer = *timer >= duration ? 0 : *timer+1;
   usleep(1000);
 
   if(*timer == 0) {
-    drawRects(*step-1);
+    drawRects(step-1);
     for(int i=0; i<matrix[0]; i++) {
-      if(pattern[i][*step-1] == 1) {
+      if(pattern[i][step-1] == 1) {
         Mix_PlayChannel(-1, samples[i], 0);
       }
     }
-    *step = *step < matrix[1] ? *step+1 : 1;
+
+    step = step < matrix[1] ? step+1 : 1;
+
+    if(setErease && step == 1) {
+      for(int i=0; i<matrix[1]; i++) {
+        pattern[ereaseSample-1][i] = 0;
+      }
+      setErease = false;
+    }
   }
 }

README.md

@@ -2,15 +2,15 @@
 
 #### Keys (C version)
 
-| Key     | Key +   | Action        | Description                              |
-| ------- | ------- | ------------- | ---------------------------------------- |
-| 1,2,3,4 |         | Play sample n | Set the sample when sequencer is playing |
-| P       |         | Play/Stop     | Play/Stop Sequencer                      |
-| E       | 1,2,3,4 | Erease        | Erease the sample line                   |
-|         |         |               |                                          |
-|         |         |               |                                          |
-|         |         |               |                                          |
-|         |         |               |                                          |
-|         |         |               |                                          |
-|         |         |               |                                          |
+| Key     | Options | Action        | Description                                             |
+| ------- | ------- | ------------- | ------------------------------------------------------- |
+| 1,2,3,4 |         | Play sample n | Set the sample when sequencer is playing or set options |
+| P       |         | Play/Stop     | Play/Stop Sequencer                                     |
+| E       | 1,2,3,4 | Erease        | Erease the sample line                                  |
+| O       | 1,2,3,4 | Open pattern  | Open the pattern by number                              |
+| B       | 1,2,3,4 | Open bank     | Open the bank by number                                 |
+|         |         |               |                                                         |
+|         |         |               |                                                         |
+|         |         |               |                                                         |
+|         |         |               |                                                         |