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/* Project Starshatter 4.5
Destroyer Studios LLC
Copyright © 1997-2004. All Rights Reserved.
SUBSYSTEM: Stars.exe
FILE: Grid.cpp
AUTHOR: John DiCamillo
OVERVIEW
========
Tactical Grid class
*/
#include "MemDebug.h"
#include "Grid.h"
#include "Game.h"
#include "Video.h"
#include "Window.h"
static const Color DARK_LINE( 8, 8, 8);
static const Color LITE_LINE(16, 16, 16);
// +--------------------------------------------------------------------+
Grid::Grid(int asize, int astep)
: size(asize), step(astep), drawn(0)
{
radius = (float) (size * 1.414);
}
Grid::~Grid()
{ }
// +--------------------------------------------------------------------+
int Grid::CollidesWith(Graphic& o) { return 0; }
// +--------------------------------------------------------------------+
void Grid::Render(Video* video, DWORD flags)
{
if (!video || hidden) return;
int c = 0;
Color line;
for (int i = 0; i <= size; i += step) {
Point p1( i, 0, -size); p1 += Location();
Point p2( i, 0, size); p2 += Location();
Point p3(-i, 0, -size); p3 += Location();
Point p4(-i, 0, size); p4 += Location();
if (c) line = DARK_LINE;
else line = LITE_LINE;
DrawLine(video, p1,p2,line);
DrawLine(video, p3,p4,line);
c++;
if (c > 3) c = 0;
}
c = 0;
for (i = 0; i <= size; i += step) {
Point p1(-size, 0, i); p1 += Location();
Point p2( size, 0, i); p2 += Location();
Point p3(-size, 0, -i); p3 += Location();
Point p4( size, 0, -i); p4 += Location();
if (c) line = DARK_LINE;
else line = LITE_LINE;
DrawLine(video, p1,p2,line);
DrawLine(video, p3,p4,line);
c++;
if (c > 3) c = 0;
}
}
void Grid::DrawLine(Video* video, Point& p1, Point& p2, Color grid_color)
{
Vec3 v[2];
v[0] = p1;
v[1] = p2;
video->DrawLines(1, v, grid_color, Video::BLEND_ADDITIVE);
}
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