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// ==============================================================
// This file is part of Glest (www.glest.org)
//
// Copyright (C) 2001-2010 Mark Vejvoda
//
// You can redistribute this code and/or modify it under
// the terms of the GNU General Public License as published
// by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version
// ==============================================================
#include "base_renderer.h"
#include <cassert>
#include "opengl.h"
#include "vec.h"
using namespace Shared::Graphics;
using namespace Shared::Graphics::Gl;
namespace Shared { namespace Graphics {
// ===============================================
// class Renderer
// ===============================================
void BaseRenderer::initMapSurface(int clientW, int clientH) {
assertGl();
glFrontFace(GL_CW);
glEnable(GL_CULL_FACE);
glPolygonMode(GL_FRONT, GL_FILL);
glClearColor(0.5, 0.5, 0.5, 1.0);
assertGl();
}
void BaseRenderer::renderMap(MapPreview *map, int x, int y,
int clientW, int clientH, int cellSize, bool grid, bool heightMap, bool hideWater) {
float alt=0;
float showWater=0;
assertGl();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, clientW, 0, clientH, 1, -1);
glViewport(0, 0, clientW, clientH);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glPushAttrib(GL_CURRENT_BIT);
glTranslatef(static_cast<float>(x), static_cast<float>(y), 0.0f);
glLineWidth(1);
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(0, 0, 0);
for (int j = 0; j < map->getH(); j++) {
for (int i = 0; i < map->getW(); i++) {
if (i * cellSize + x > -cellSize
&& i * cellSize + x < clientW
&& clientH - cellSize - j * cellSize + y > -cellSize
&& clientH - cellSize - j * cellSize + y < clientH) {
bool isCliff=false; // needed to speedup things
//surface
alt = map->getHeight(i, j) / 20.f;
showWater = map->getWaterLevel()/ 20.f - alt;
showWater = (showWater > 0)? showWater:0;
if(hideWater){
showWater = 0;
}
Vec3f surfColor;
switch (map->getSurface(i, j)) {
case st_Grass: surfColor = Vec3f(0.0, 0.8f * alt, 0.f + showWater); break;
case st_Secondary_Grass: surfColor = Vec3f(0.4f * alt, 0.6f * alt, 0.f + showWater); break;
case st_Road: surfColor = Vec3f(0.6f * alt, 0.3f * alt, 0.f + showWater); break;
case st_Stone: surfColor = Vec3f(0.7f * alt, 0.7f * alt, 0.7f * alt + showWater); break;
case st_Ground: surfColor = Vec3f(0.7f * alt, 0.5f * alt, 0.3f * alt + showWater); break;
}
if(heightMap){
surfColor = Vec3f(1.f * alt, 1.f * alt, 1.f * alt + showWater);
}
if(map->getCliffLevel()>0)
{// we maybe need to render cliff surfColor
if(map->isCliff(i, j)){
surfColor = Vec3f(0.95f * alt, 0.8f * alt, 0.0f * alt + showWater);
isCliff=true;
}
}
glColor3fv(surfColor.ptr());
glBegin(GL_TRIANGLE_STRIP);
glVertex2i(i * cellSize, clientH - j * cellSize - cellSize);
glVertex2i(i * cellSize, clientH - j * cellSize);
glVertex2i(i * cellSize + cellSize, clientH - j * cellSize - cellSize);
glVertex2i(i * cellSize + cellSize, clientH - j * cellSize);
glEnd();
if(!heightMap){
//objects
switch (map->getObject(i, j)) {
case 0: glColor3f(0.f, 0.f, 0.f); break;
case 1: glColor3f(1.f, 0.f, 0.f); break;
case 2: glColor3f(1.f, 1.f, 1.f); break;
case 3: glColor3f(0.5f, 0.5f, 1.f); break;
case 4: glColor3f(0.f, 0.f, 1.f); break;
case 5: glColor3f(0.5f, 0.5f, 0.5f); break;
case 6: glColor3f(1.f, 0.8f, 0.5f); break;
case 7: glColor3f(0.f, 1.f, 1.f); break;
case 8: glColor3f(0.7f, 0.1f, 0.3f); break;
case 9: glColor3f(0.5f, 1.f, 0.1f); break;
case 10: glColor3f(1.f, 0.2f, 0.8f); break;
}
if (map->getObject(i, j) != 0 || isCliff ) {
glPointSize(cellSize / 2.f);
glBegin(GL_POINTS);
glVertex2i(i * cellSize + cellSize / 2, clientH - j * cellSize - cellSize / 2);
glEnd();
}
// bool found = false;
//height lines
// if (!found) {
glColor3fv((surfColor*0.5f).ptr());
//left
if (grid || (i > 0 && map->getHeight(i - 1, j) > map->getHeight(i, j))) {
glBegin(GL_LINES);
glVertex2i(i * cellSize, clientH - (j + 1) * cellSize);
glVertex2i(i * cellSize, clientH - j * cellSize);
glEnd();
}
//down
if (grid || (j > 0 && map->getHeight(i, j - 1) > map->getHeight(i, j))) {
glBegin(GL_LINES);
glVertex2i(i * cellSize, clientH - j * cellSize);
glVertex2i((i + 1) * cellSize, clientH - j * cellSize);
glEnd();
}
glColor3fv((surfColor*2.f).ptr());
//left
if (i > 0 && map->getHeight(i - 1, j) < map->getHeight(i, j)) {
glBegin(GL_LINES);
glVertex2i(i * cellSize, clientH - (j + 1) * cellSize);
glVertex2i(i * cellSize, clientH - j * cellSize);
glEnd();
}
if (j > 0 && map->getHeight(i, j - 1) < map->getHeight(i, j)) {
glBegin(GL_LINES);
glVertex2i(i * cellSize, clientH - j * cellSize);
glVertex2i((i + 1) * cellSize, clientH - j * cellSize);
glEnd();
}
// }
//resources
switch (map->getResource(i, j)) {
case 1: glColor3f(1.f, 1.f, 0.f); break;
case 2: glColor3f(0.5f, 0.5f, 0.5f); break;
case 3: glColor3f(1.f, 0.f, 0.f); break;
case 4: glColor3f(0.f, 0.f, 1.f); break;
case 5: glColor3f(0.5f, 0.5f, 1.f); break;
}
if (map->getResource(i, j) != 0) {
glBegin(GL_LINES);
glVertex2i(i * cellSize, clientH - j * cellSize - cellSize);
glVertex2i(i * cellSize + cellSize, clientH - j * cellSize);
glVertex2i(i * cellSize, clientH - j * cellSize);
glVertex2i(i * cellSize + cellSize, clientH - j * cellSize - cellSize);
glEnd();
}
}
}
}
}
//start locations
glLineWidth(3);
for (int i = 0; i < map->getMaxFactions(); i++) {
switch (i) {
case 0: glColor3f(1.f, 0.f, 0.f); break;
case 1: glColor3f(0.f, 0.f, 1.f); break;
case 2: glColor3f(0.f, 1.f, 0.f); break;
case 3: glColor3f(1.f, 1.f, 0.f); break;
case 4: glColor3f(1.f, 1.f, 1.f); break;
case 5: glColor3f(0.f, 1.f, 0.8f); break;
case 6: glColor3f(1.f, 0.5f, 0.f); break;
case 7: glColor3f(1.f, 0.5f, 1.f); break;
}
glBegin(GL_LINES);
glVertex2i((map->getStartLocationX(i) - 1) * cellSize, clientH - (map->getStartLocationY(i) - 1) * cellSize);
glVertex2i((map->getStartLocationX(i) + 1) * cellSize + cellSize, clientH - (map->getStartLocationY(i) + 1) * cellSize - cellSize);
glVertex2i((map->getStartLocationX(i) - 1) * cellSize, clientH - (map->getStartLocationY(i) + 1) * cellSize - cellSize);
glVertex2i((map->getStartLocationX(i) + 1) * cellSize + cellSize, clientH - (map->getStartLocationY(i) - 1) * cellSize);
glEnd();
}
glPopMatrix();
glPopAttrib();
assertGl();
}
}} // end namespace
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