sheldonmlee/raycasting
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Refactor 2D map drawing.

Browse Source 
2D level represntation now drawn as minimap in it's own texture.
This commit is contained in:
Sheldon Lee
2023-04-16 02:17:11 +01:00
parent 0acfb6e0a9
commit bce640219f
8 changed files with 162 additions and 125 deletions
Download Patch File Download Diff File Expand all files Collapse all files
camera.cpp
+3 -59
View File
@@ -4,73 +4,17 @@
#include "level.h"
#define ROTATION_SPEED PI
#define TRANSLATIONAL_SPEED 100.f
#define TRANSLATIONAL_SPEED 1.f
static void draw(Camera* camera, sf::RenderWindow* window);
static void drawRays(Camera* camera, sf::RenderWindow* window);
static void drawLine(sf::RenderWindow* window, sf::Vector2f pos, float angle, float length, sf::Color color);
static void move(Camera* camera, float t);
void camera_update(Camera* camera, sf::RenderWindow* window, float t)
void camera_update(Camera* camera, float t)
{
if (!camera || !window) return;
if (!camera) return;
draw(camera, window);
move(camera, t);
}
static void draw(Camera* camera, sf::RenderWindow* window)
{
const float circleRadius = 5.f;
sf::CircleShape circle(circleRadius);
circle.setPosition(camera->pos);
circle.setOrigin(circleRadius, circleRadius);
circle.setFillColor(sf::Color::Green);
drawRays(camera, window);
drawLine(window, camera->pos, camera->direction, 100, sf::Color::Red);
window->draw(circle);
}
static void drawRays(Camera* camera, sf::RenderWindow* window)
{
float rayDirection = 0;
float rayDirectionStep = camera->fov / (float)camera->resolution;
bool isOddResolution = (camera->resolution % 2);
float rayDirectionOffset = isOddResolution? 0 : rayDirectionStep / 2.f;
for (unsigned int i = 0; i < camera->resolution; i++) {
if (isOddResolution && i == 0)
rayDirection = camera->direction;
else if (i % 2)
rayDirection = camera->direction - rayDirectionOffset;
else
rayDirection = camera->direction + rayDirectionOffset;
float distance = level_rayCastDistance(camera->pos, rayDirection);
drawLine(window, camera->pos, rayDirection, distance, sf::Color(150, 150, 100));
if ((i + isOddResolution) % 2) rayDirectionOffset += rayDirectionStep;
}
}
static void drawLine(sf::RenderWindow* window, sf::Vector2f pos, float angle, float length, sf::Color color)
{
if (!window) return;
sf::Vector2f endOffset(length * cos(angle), length * sin(angle));
sf::Vertex start(pos);
sf::Vertex end(pos + endOffset);
start.color = color;
end.color = color;
sf::Vertex line[] = { start, end };
window->draw(line, 2, sf::Lines);
}
static void move(Camera* camera, float t)
{
int forward = 0;