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Implement basic first person view rendering.

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This commit is contained in:
Sheldon Lee 2023-04-20 02:21:21 +01:00
parent d186b948a7
commit 4a9d85ba1c
3 changed files with 25 additions and 8 deletions
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24
firstperson.cpp
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@ -20,16 +20,32 @@ int firstperson_init(unsigned int _width, unsigned int _height)
return 1; return 1;
} }
void firstperson_update(sf::RenderTarget* renderTarget) void firstperson_update(sf::RenderTarget* renderTarget, Camera* camera)
{ {
const float columnWidth = (float)width/(float)camera->resolution;
float columnHeight = 0;
renderTexture.clear(); renderTexture.clear();
sf::CircleShape shape(50);
renderTexture.draw(shape);
renderTexture.display();
for (unsigned int i = 0; i < camera->resolution; i++) {
float distance = camera->rays[i].distance;
if (distance > 0.f) columnHeight = 0.5f * (float)height/camera->rays[i].distance;
float centeredHeight = (float)height/2.f - columnHeight/2.f;
float distanceScale = distance/10.f;
distanceScale = (distanceScale > 1.f)? 1.f : distanceScale;
float brightness = 255.f*(1.f-distanceScale);
sf::RectangleShape rectangle(sf::Vector2f(columnWidth, columnHeight));
rectangle.setPosition(sf::Vector2f(i*columnWidth, centeredHeight));
rectangle.setFillColor(sf::Color(brightness, brightness, brightness));
renderTexture.draw(rectangle);
}
renderTexture.display();
sf::Sprite sprite(renderTexture.getTexture()); sf::Sprite sprite(renderTexture.getTexture());
sprite.setPosition(renderTexturePosition); sprite.setPosition(renderTexturePosition);
renderTarget->draw(sprite); renderTarget->draw(sprite);
} }
void firstperson_setTexturePosition(float x, float y) void firstperson_setTexturePosition(float x, float y)

3
firstperson.h
View File

@ -2,9 +2,10 @@
#define FIRSTPERSON_H #define FIRSTPERSON_H
#include <SFML/Graphics.hpp> #include <SFML/Graphics.hpp>
#include "camera.h"
int firstperson_init(unsigned int width, unsigned int height); int firstperson_init(unsigned int width, unsigned int height);
void firstperson_update(sf::RenderTarget* renderTarget); void firstperson_update(sf::RenderTarget* renderTarget, Camera* camera);
void firstperson_setTexturePosition(float x, float y); void firstperson_setTexturePosition(float x, float y);
#endif #endif

6
view.cpp
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@ -7,7 +7,7 @@
#include "minimap.h" #include "minimap.h"
#include "firstperson.h" #include "firstperson.h"
#define MINIMAP_SIZE 460 #define MINIMAP_SIZE 720
#define VIEW_SIZE MINIMAP_SIZE*2 #define VIEW_SIZE MINIMAP_SIZE*2
static int handleKeyCode(sf::Keyboard::Key key); static int handleKeyCode(sf::Keyboard::Key key);
@ -21,7 +21,7 @@ static sf::Clock timer;
int view_init() int view_init()
{ {
printf("view_init()\n"); printf("view_init()\n");
if (!camera_init(&camera, sf::Vector2f(5.f/2.f, 5.f/2.f), 0.f, 100, 0.5f*PI)) return 0; if (!camera_init(&camera, sf::Vector2f(10.f/2.f, 10.f/2.f), 0.f, 128, 0.5f*PI)) return 0;
if (!minimap_init(MINIMAP_SIZE)) return 0; if (!minimap_init(MINIMAP_SIZE)) return 0;
if (!firstperson_init(VIEW_SIZE, MINIMAP_SIZE)) return 0; if (!firstperson_init(VIEW_SIZE, MINIMAP_SIZE)) return 0;
@ -53,7 +53,7 @@ int view_update()
window.clear(); window.clear();
minimap_update(&window, &camera); minimap_update(&window, &camera);
firstperson_update(&window); firstperson_update(&window, &camera);
window.display(); window.display();
return 1; return 1;