/*\r
- DEMO01 - Sprites, page flipping and palette rotation\r
- Copyright (c) 1994 Alessandro Scotti\r
-*/\r
-uses Crt, Modex;\r
+ * DEMO01 - Sprites, page flipping and palette rotation\r
+ * Copyright (c) 1994 Alessandro Scotti\r
+ */\r
+#include ../../x/modex.h\r
\r
#DEFINE MAX_SPRITE 100\r
\r
-type\r
- /* Sprite structure */\r
- TSprite = record\r
- X, Y : integer; /* Sprite coordinates */\r
- DX,DY: integer; /* Deltas for sprite movement */\r
- W, H : integer; /* Sprite width and height */\r
- Image: array[ 1..16, 1..16 ] of byte; /* Sprite image data */\r
- }\r
- /* RGB color structure */\r
- TRgb = record\r
- R, G, B: byte;\r
- }\r
-var\r
- S : array[ 1..MAX_SPRITE ] of TSprite; /* An array of sprites */\r
- Palette: array[ byte ] of TRgb; /* Palette */\r
- Page : word; /* Page offset */\r
- I : word;\r
+typedef unsigned char byte;\r
+typedef unsigned short word;\r
+typedef unsigned long dword;\r
+\r
+/* Sprite structure */\r
+typedef struct {\r
+ int X, Y; /* Sprite coordinates */\r
+ int DX,DY; /* Deltas for sprite movement */\r
+ int W, H; /* Sprite width and height */\r
+ byte Image[16,16]; /* Sprite image data */\r
+} TSprite;\r
+\r
+/* RGB color structure */\r
+typedef struct {\r
+ byte R, G, B;\r
+} TRgb;\r
+Tsprite S[MAX_SPRITE]; /* An array of sprites */\r
+TRgb Palette[ byte ]; /* Palette */\r
+word Page; /* Page offset */\r
+word i;\r
\r
/* Initializes a sprite structure */\r
-procedure sxInit( var S: TSprite );\r
-var\r
- I: word;\r
-begin\r
- S.X := Random( 320 ); /* Initialize position with random values */\r
- S.Y := Random( 240 );\r
- S.DX := Random( 7 )-3; /* Initialize speed with random values */\r
- S.DY := Random( 7 )-3;\r
- S.W := 16; /* Size is fixed in this program */\r
- S.H := 16;\r
- /* The image is a square with a hole inside */\r
- FillChar( S.Image, SizeOf(S.Image), Random(15)+1 );\r
- for I:=5 to 12 do FillChar( S.Image[ I, 5 ], 8, 0 );\r
+void sxInit(TSprite *S)\r
+{\r
+//word i;\r
+\r
+S->X = rand( 320 ); /* Initialize position with random values */\r
+S->Y = rand( 240 );\r
+S->DX = rand( 7 )-3; /* Initialize speed with random values */\r
+S->DY = rand( 7 )-3;\r
+S->W = 16; /* Size is fixed in this program */\r
+S->H = 16;\r
+/* The image is a square with a hole inside */\r
+FillChar( S->Image, SizeOf(S->Image), rand(15)+1 );\r
+ for(i=5; i<=12;i++)\r
+ {\r
+ FillChar( S->Image[ i, 5 ], 8, 0 );\r
+ }\r
}\r
\r
/* Moves a sprite */\r
-procedure sxMove( var S: TSprite );\r
-begin\r
- Inc( S.X, S.DX ); /* Get new position */\r
- Inc( S.Y, S.DY );\r
- /* Check sprite position, change delta if needed */\r
- if( S.X > 320 ) then begin\r
- S.X := 320;\r
- S.DX := -S.DX;\r
- }\r
- if( S.X < -16 ) then begin\r
- S.X := -16;\r
- S.DX := -S.DX;\r
- }\r
- if( S.Y > 240 ) then begin\r
- S.Y := 240;\r
- S.DY := -S.DY;\r
- }\r
- if( S.Y < -16 ) then begin\r
- S.Y := -16;\r
- S.DY := -S.DY;\r
- }\r
- /* Draw the sprite, note the Page offset added to the */\r
- /* Y coordinate of the image */\r
- mxPutImage( @S.Image, S.X, Page+S.Y, S.W, S.H, OP_TRANS );\r
+void sxMove(TSprite *S)\r
+{\r
+//Inc( S.X, S.DX ); /* Get new position */\r
+//Inc( S.Y, S.DY );\r
+/* Check sprite position, change delta if needed */\r
+if( S->X > 320 ){\r
+ S->X = 320;\r
+S->DX = -S->DX;\r
+}\r
+if( S->X < -16 ){\r
+ S->X = -16;\r
+S->DX = -S->DX;\r
+}\r
+if( S->Y > 240 ){\r
+ S.Y = 240;\r
+ S->DY = -S->DY;\r
+}\r
+if( S->Y < -16 ){\r
+ S->Y = -16;\r
+ S->DY = -S->DY;\r
+}\r
+/* Draw the sprite, note the Page offset added to the */\r
+/* Y coordinate of the image */\r
+mxPutImage( S.Image, S->X, Page+S->Y, S->W, S->H, OP_TRANS );\r
}\r
\r
void main()\r
{\r
int i;\r
+ //TSprite S;\r
/* Initialize library */\r
mxInit();\r
-\r
+ \r
/* Enter graphics mode */\r
mxSetMode( MX_320x240 );\r
-\r
+ \r
/* Print initialization message */\r
mxSetTextColor( 15, OP_TRANS );\r
mxOutStr( 4, 4, 'Initializing...' );\r
-\r
+ \r
/* Initialize sprites */\r
for(i=1;i<=MAX_SPRITE;i++)\r
- sxInit( S[i] );\r
-\r
+ sxInit( &S[i] );\r
+ \r
/* Draw background */\r
for(i=1;i<=192;i++)\r
{\r
mxCircle( 160, 480+120, I, I+63 );\r
mxCircle( 161, 480+120, I, I+63 );\r
}\r
-\r
+ \r
/* Compute and set palette */\r
- for I:=1 to 192 do with Palette[I+63] do begin\r
- R := 0;\r
- G := 0;\r
- B := 0;\r
- if( I < 64 ) then\r
- R := I shr 1+31\r
+ for(i=1;i<= 192;Palette[i+63])\r
+ {\r
+ short R = 0;\r
+ short G = 0;\r
+ short B = 0;\r
+ if( i < 64 )\r
+ R = i >> 1+31;\r
else if( i < 128 )\r
- G := (I-64) shr 1+31\r
+ G = (i-64) >> 1+31;\r
else\r
- B := (I-128) shr 1+31;\r
+ B = (i-128) >> 1+31;\r
}\r
mxSetPalette( @Palette[64], 64, 192 );\r
-\r
+ \r
/* Main loop */\r
- Page := 240;\r
+ short Page = 240;\r
while(!kbhit())\r
{\r
/* Set clip region to current page */\r
/* Restore background */\r
mxBitBlt( 0, 480, 320, 240, 0, Page );\r
/* Draw sprites */\r
- for I:=1 to MAX_SPRITE do sxMove( S[I] );\r
+ for(i=1; i <= MAX_SPRITE; sxMove( S[i] ));\r
/* Print message */\r
mxOutStr( 4, Page+4, 'Some sprites moving...' );\r
/* Flip page */\r
mxStartLine( Page );\r
- Page := 240-Page;\r
+ Page = 240-Page;\r
/* Animate palette */\r
mxSetPalette( @Palette[64], 64, 192 );\r
mxRotatePalette( @Palette[64], 192, 3 );\r
}\r
-\r
+ \r
mxSetMode( MX_TEXT );\r
mxTerm;\r
-\r
+ \r
}\r
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