Sleepyness

4 files changed, 24 insertions, 8 deletions

diff --git a/include/libsldj/util.h b/include/libsldj/util.h
index 2c8dff6..8edf4dc 100644
--- a/include/libsldj/util.h
+++ b/include/libsldj/util.h
@@ -22,6 +22,9 @@
 #define SLDJ_HYPOT2(x, y) (SLDJ_SQRT(x * x + y * y))
 #define SLDJ_HYPOT3(x, y, z) (SLDJ_SQRT(x * x + y * y + z * z))
 
+#define SLDJ_RANDOM16(seed) (seed = (75 * seed + 74) % 65537)
+#define SLDJ_RANDOM32(seed) (seed = (1664525 * seed + 1013904223) % 4294967296)
+
 // Stuff stolen from raylib/raymath
 #ifndef RL_COLOR_TYPE
 #define RL_COLOR_TYPE
diff --git a/src/sldj.c b/src/sldj.c
index f8c1817..c900995 100644
--- a/src/sldj.c
+++ b/src/sldj.c
@@ -5,6 +5,8 @@ void initSldj(Sldj* sldj)
     // Create window.
     InitWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Scanline DJ");
     SetWindowState(FLAG_WINDOW_RESIZABLE);
+
+    sldj->isPaused = false;
     
     //SetTargetFPS(DEFAULT_FRAME_RATE);
     sldj->targetFps = DEFAULT_FRAME_RATE;
@@ -26,7 +28,7 @@ void updateSldj(Sldj* sldj)
     // Scan image.
     BeginTextureMode(sldj->viewport);
 
-    if (sldj->scripting.lineScanner != NULL)
+    if (!sldj->isPaused && sldj->scripting.lineScanner != NULL)
     {
         uint16_t xScan = 0;
         uint16_t yScan = 0;
@@ -43,6 +45,8 @@ void updateSldj(Sldj* sldj)
 
             yScan += sldj->yCount;
         }
+
+        ++sldj->frameCounter;
     }
 
     EndTextureMode();
@@ -62,14 +66,19 @@ void updateSldj(Sldj* sldj)
 
     DrawFPS(0, viewport.height);
 
+    // Handle input.
     if (IsKeyPressed(KEY_R))
     {
         reloadScript(sldj);
+        sldj->isPaused = false;
     }
 
-    EndDrawing();
+    if (IsKeyPressed(KEY_SPACE))
+    {
+        sldj->isPaused = !sldj->isPaused;
+    }
 
-    ++sldj->frameCounter;
+    EndDrawing();
 }
 
 void closeSldj(Sldj* sldj)
diff --git a/src/sldj.h b/src/sldj.h
index d64b99c..a577a60 100644
--- a/src/sldj.h
+++ b/src/sldj.h
@@ -15,6 +15,7 @@
 typedef struct Sldj {
     RenderTexture viewport;
 
+    bool isPaused;
     uint8_t targetFps;
     uint32_t frameCounter;
 
diff --git a/test/scanTest3.c b/test/scanTest3.c
index 1a0c3ec..29559c3 100644
--- a/test/scanTest3.c
+++ b/test/scanTest3.c
@@ -22,17 +22,20 @@ void loadContext(SldjContext context)
     }
 }
 
-int s = 100;
+int s = 102;
 
 Color lineScanner(uint16_t x, uint16_t y, uint32_t frameNumber)
 {
     // Shifts around the noise to make it look better.
-    uint8_t c = values[((x + (frameNumber >> 2)) + (y << 1)) % VALUES_SIZE];
-    uint8_t b = frameNumber + SLDJ_HYPOT2(((x - 32768) >> 6), ((y - 32768) >> 6));
+    //uint8_t c = values[((x + (frameNumber >> 2)) + (y << 1)) % VALUES_SIZE];
+
+    uint8_t c = SLDJ_RANDOM16(s) >> 8;
+    //uint8_t c = SLDJ_RANDOM32(s) >> 24;
+    //uint8_t c = random();
     
     return (Color){
-        .r = (c + b) << 1,
-        .g = b,
+        .r = c * 10,
+        .g = c + 127,
         .b = c,
         .a = 255
     };