game-ctrl merged

game-ctrl/canvas.c

@@ -0,0 +1,55 @@
+#include <string.h>
+#include <stdint.h>
+
+#include "canvas.h"
+#include "displayDriver.h"
+
+
+static uint8_t canvasStorage[CANVAS_WIDTH * CANVAS_HEIGHT];
+const canvas_t canvas = { 
+  .height = CANVAS_HEIGHT,
+  .width = CANVAS_WIDTH,
+  .size = CANVAS_WIDTH * CANVAS_HEIGHT,
+  .canvas = canvasStorage
+};
+
+void canvasInit() {
+  canvasClear();
+  displayDriverTransferCanvas();
+}
+
+void canvasClear() {
+  memset(canvas.canvas, 0x80, canvas.size);
+}
+
+void canvasSetAll(uint8_t color) {
+  memset(canvas.canvas, color + 0x80, canvas.size);
+}
+
+void canvasShow() {
+  displayDriverTransferCanvas();
+}
+
+void canvasSetPixel(uint8_t column, uint8_t row, uint8_t color) {
+  *((canvas.canvas) + (row * canvas.width + column)) = (color + 0x80);
+}
+
+void canvasWipeRow(uint8_t row) {
+  memmove(((canvas.canvas)+canvas.width), canvas.canvas, canvas.width*row);
+  for (uint8_t i = 10; i < canvas.width*(row+1); i++) {
+    *((canvas.canvas)+i) += 0x80;
+  }
+  memset(canvas.canvas, 0x80, canvas.width);
+}
+
+uint8_t canvasIsRowFilled(uint8_t row) {
+  uint8_t res = 1;
+  for (uint8_t column = 0; column < canvas.width; column++) {
+    if (*((canvas.canvas) + (row * canvas.width + column)) == 0) {
+      res = 0;
+      break;
+    }
+  }
+  return res;
+}
+