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Code for some of the basic game design - selecting existing nodes, limiting edge distance

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This commit is contained in:
Anna Rose
2011-06-22 22:32:33 -04:00
parent 53f1560393
commit 48c45c2191
4 changed files with 64 additions and 9 deletions
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27
gamecore.cpp
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@ -5,11 +5,15 @@
#include <iostream>
#endif
int GameCore::NODE_SIZE = 25;
int GameCore::MAX_MOVE_DISTANCE = 200;
GameCore::GameCore()
{
display = NULL;
background = NULL;
node = NULL;
move_template = NULL;
is_running = true;
}
@ -51,7 +55,11 @@ bool GameCore::init()
node = DrawUtils::load("node.bmp");
DrawUtils::transpare(node, 255, 0, 255);
if (background == NULL || node == NULL)
move_template = DrawUtils::load("move_template.bmp");
DrawUtils::transpare(move_template, 255, 0, 255);
SDL_SetAlpha(move_template, SDL_SRCALPHA, 128);
if (background == NULL || node == NULL || move_template == NULL)
{
#ifdef DEBUG
std::cerr << "GameCore::init(): error: Couldn't load an image file\n";
@ -85,6 +93,13 @@ void GameCore::render()
0x000000);
}
if (graph.get_current_vertex() != NULL)
{
Vertex* v = graph.get_current_vertex();
DrawUtils::draw(display, move_template, v->x, v->y);
}
SDL_Flip(display);
}
@ -112,5 +127,13 @@ void GameCore::on_exit()
void GameCore::on_lbutton_down(int x, int y)
{
graph.add_vertex(x, y, 25);
Vertex* v = graph.get_current_vertex();
Vertex new_v = Vertex();
new_v.x = x;
new_v.y = y;
if (v != NULL && (Vertex::distance(*v, new_v) > MAX_MOVE_DISTANCE))
return
graph.do_vertex(x, y, NODE_SIZE);
}