Diff: main.cpp

Revision:

0:de6c5a1ab24c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Dec 29 06:38:48 2017 +0000
@@ -0,0 +1,83 @@
+#include "Pokitto.h"
+
+Pokitto::Core game;
+
+unsigned short pal[256]; // assign a 256 entry array to hold the palette
+
+int PntClr(int x, int y){
+    return game.display.getPixel(x,y);
+}
+void Dot (int x, int y, int c){
+    game.display.drawPixel(x,y,c);
+}
+int RandMinMax(int min, int max){
+    return rand() % max + min;
+}
+int Adjust (int xa, int ya, int x, int y, int xb, int yb){
+    if(PntClr(x, y) != 0) return 0;
+    int q = abs(xa - xb) + abs(ya - yb);
+    int v = (PntClr(xa, ya) + PntClr(xb, yb)) / 2 + (RandMinMax(0,q*10)) / 10;
+    if (v < 1) v = 1;
+    if (v > 255) v = 255;
+    Dot(x, y, v);
+    return 1;
+}
+void SubDivide (int x1, int y1, int x2, int y2){
+    if ((x2 - x1 < 2) && (y2 - y1 < 2)) return;
+    int x = (x1 + x2) / 2;
+    int y = (y1 + y2) / 2;
+    Adjust(x1, y1, x, y1, x2, y1);
+    Adjust(x1, y2, x, y2, x2, y2);
+    Adjust(x2, y1, x2, y, x2, y2);
+    Adjust(x1, y1, x1, y, x1, y2);
+    if(PntClr(x, y) == 0)   {
+        int v = PntClr(x1, y1) + PntClr(x2, y1) + PntClr(x2, y2);
+        v = v + PntClr(x1, y2) + PntClr(x1, y) + PntClr(x, y1);
+        v = v + PntClr(x2, y) + PntClr(x, y2);
+        v = v / 8;
+        Dot(x, y, v);
+    }
+    SubDivide(x1, y1, x, y);
+    SubDivide(x, y, x2, y2);
+    SubDivide(x, y1, x2, y);
+    SubDivide(x1, y, x, y2);
+}
+void make_plasma(int x1=0,int y1=0,int x2=game.display.width-1,int y2=game.display.height-1){
+    game.display.clear();
+    if(x1<0)x1=0;
+    if(y1<0)y1=0;
+    if(x2>game.display.width-1)x2=game.display.width-1;
+    if(y2>game.display.height-1)y2=game.display.height-1;
+    Dot(x1, y1, RandMinMax(0,255) + 1);
+Dot(x2, y1, RandMinMax(0,255) + 1);
+Dot(x2, y2, RandMinMax(0,255) + 1);
+Dot(x1, y2, RandMinMax(0,255) + 1);
+SubDivide(x1, y1, x2, y2);
+}
+void make_pal(void){
+    int a,s,r,g,b;
+    for(a=0; a<=63; a++){
+        s = 0;  r = a;      g = 63-a;   b = 0;      pal[a+s] = game.display.RGBto565(r*4,g*4,b*4);
+        s = 64; r = 63-a;   g = 0;      b = a;      pal[a+s] = game.display.RGBto565(r*4,g*4,b*4);
+        s = 128; r = 0;     g = 0;      b = 63-a;   pal[a+s] = game.display.RGBto565(r*4,g*4,b*4);
+        s = 192; r = 0;     g = a;      b = 0;      pal[a+s] = game.display.RGBto565(r*4,g*4,b*4);
+    }
+    game.display.load565Palette(&pal[0]); // load a palette the same way as any other palette in any other screen mode
+}
+int main(){
+    char col=0;
+    game.begin();
+    game.display.persistence=1;
+    srand(game.getTime());
+make_pal(); // create 256 colour palette for this demo
+make_plasma(0,0,game.display.width-1,game.display.height-1); // create a nice plasma cloud
+
+while (game.isRunning()) {
+    if(game.update()){
+    // mode 13 has a palette offset, so instead of rotating your palette, you just tell it which colour should be first.
+        game.display.palOffset = col++;
+    }
+}
+
+return 1;
+}
\ No newline at end of file