764 lines
30 KiB
C
764 lines
30 KiB
C
#include "raylib.h"
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#include "rcamera.h"
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#include "raymath.h"
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#include "stdbool.h"
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#include "stddef.h"
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#include "stdlib.h"
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#include "stdint.h"
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#include "rlgl.h"
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//----------------------------------------------------------------------------------
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// Defines and Macros
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//----------------------------------------------------------------------------------
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// Movement constants
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#define GRAVITY 32.0f
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#define MAX_SPEED 20.0f
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#define CROUCH_SPEED 5.0f
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#define JUMP_FORCE 12.0f
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#define MAX_ACCEL 150.0f
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// Grounded drag
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#define FRICTION 0.86f
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// Increasing air drag, increases strafing speed
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#define AIR_DRAG 0.98f
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// Responsiveness for turning movement direction to looked direction
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#define CONTROL 15.0f
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#define CROUCH_HEIGHT 0.0f
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#define STAND_HEIGHT 2.0f
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#define BOTTOM_HEIGHT 0.5f
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// Additional definitions
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#define NORMALIZE_INPUT 0
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#define ARRLEN(a) (sizeof(a) / sizeof((a)[0]))
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#define FLOOR_EXTENT 25
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#define TILE_SIZE 5.0f
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enum game_state {
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STATE_MENU, // 0 by default
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STATE_GAME, // 1
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};
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//----------------------------------------------------------------------------------
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// RNG
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//----------------------------------------------------------------------------------
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// One-time world seed (set in main)
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static uint32_t gWorldSeed = 123456789u;
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// Fast 2D int hash → stable pseudo-random per cell
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static inline uint32_t hash2i(int x, int z, uint32_t seed)
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{
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uint32_t h = (uint32_t)x * 374761393u ^ (uint32_t)z * 668265263u ^ seed * 2654435761u;
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h ^= h >> 13; h *= 1274126177u; h ^= h >> 16;
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return h;
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}
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// 1-in-N chance using a hashed value
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static inline bool one_in_n(uint32_t h, int n)
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{
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return (h % (uint32_t)n) == 0u;
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}
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// Map a few hash bits to [-0.5, +0.5] for jitter
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static inline float hash01_to_m05p05(uint32_t h_bits)
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{
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return ((h_bits & 0xFFu) / 255.0f) - 0.5f;
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}
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//----------------------------------------------------------------------------------
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//Defining program structure
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//----------------------------------------------------------------------------------
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typedef struct
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{
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Camera camera; // <- now part of the game state
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Model model; // you can keep model & its position here too
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Vector3 position;
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Vector3 velocity;
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Vector3 dir;
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Vector2 sensitivity;
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Vector2 lookRotation;
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Vector2 lean;
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float headTimer;
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float walkLerp;
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float headLerp;
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bool isGrounded;
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int cameraMode;
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} Player;
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typedef struct
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{
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int index;
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enum game_state state;
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int shouldExit;
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Player player;
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} Master;
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//------------------------------------------------------------------------------------
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// Function Initation
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//------------------------------------------------------------------------------------
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void Simple_Center_Box(double percent_verticle_gap, double percent_horizontal_gap, int screenWidth, int screenHeight, Color color);
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void Thick_Center_Box(double percent_verticle_gap, double percent_horizontal_gap, float line_width, int screenWidth, int screenHeight, Color color);
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void Simple_Menu(const char *array[], int count, int index, int x1, int y1, int total_width, int total_height, int line_thickess, int font_size, Color color, Color alt_color);
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void UpdateBody(Master* g, float rot, char side, char forward, bool jumpPressed, bool crouchHold);
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static void UpdateCameraAngle(Master* g);
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static void DrawLevel(Model mdlTile);
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static void CenterMouseAndFlush(void);
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int Random(int x);
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static void RenderTrees(Master* g, Texture2D tree, Vector3 treepos, float treeSize);
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//------------------------------------------------------------------------------------
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// Program main entry point
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//------------------------------------------------------------------------------------
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int main(void)
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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//Define window size, create window, establish fps target, fullscreen.
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const int screenWidth = 1440*2;
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const int screenHeight = 960*2;
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// BEFORE InitWindow (optional but nice): enable MSAA for smoother alpha edges
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SetConfigFlags(FLAG_MSAA_4X_HINT);
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InitWindow(screenWidth, screenHeight, "raylib");
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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ToggleFullscreen();
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CenterMouseAndFlush();
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DisableCursor(); // Limit cursor to relative movement inside the window
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//Define menu characteristics
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const char *menu[] = {"Game", "Option 2", "Exit"};
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int index_length = ARRLEN(menu);
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//General game state initiation
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Master g = (Master){0};
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g.index = 0;
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g.state = STATE_MENU;
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g.shouldExit = 0;
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//Define player values
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g.player.sensitivity = (Vector2){ 0.001f, 0.001f };
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g.player.lookRotation = (Vector2){ 0 };
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g.player.headTimer = 0.0f;
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g.player.walkLerp = 0.0f;
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g.player.headLerp = STAND_HEIGHT;
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g.player.lean = (Vector2){ 0 };
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//Define the player camera
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g.player.camera = (Camera){0};
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g.player.camera.position = (Vector3){
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g.player.position.x,
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g.player.position.y + (BOTTOM_HEIGHT + g.player.headLerp),
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g.player.position.z,
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};
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g.player.camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };
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g.player.camera.fovy = 60.0f;
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g.player.camera.projection = CAMERA_PERSPECTIVE;
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g.player.cameraMode = CAMERA_FIRST_PERSON;
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UpdateCameraAngle(&g);
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// Load GLTF model (no animations)
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//Model model = LoadModel("resources/3d_models/bad_sphere.glb");
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//Vector3 position = { 0.0f, 0.0f, 0.0f };
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// Load a 2D image as texture for the billboard
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//Billboards always point toward the active camera.
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Texture2D sign = LoadTexture("resources/sprites/husk/ZOMBC1.png");
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GenTextureMipmaps(&sign);
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SetTextureFilter(sign, TEXTURE_FILTER_BILINEAR); // optional but looks nicer
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Vector3 bbPos = (Vector3){ -1.0f, 2.0f, -1.0f }; // where in 3D world to place it
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float bbSize = 4.0f; // billboard height in world units
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// Load a 2D image as texture for the billboard
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//Billboards always point toward the active camera.
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Texture2D tree = LoadTexture("resources/sprites/tree.png");
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GenTextureMipmaps(&tree);
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SetTextureFilter(tree, TEXTURE_FILTER_BILINEAR); // optional but looks nicer
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Vector3 treepos = (Vector3){ 0.0f, 0.0f, 0.0f }; // where in 3D world to place it
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float treeSize = 15.0f; // billboard height in world units
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float cutoffAlpha = 0.7f; //Needs to be aggressive to remove the alpha.
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// Grass tile setup
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Texture2D texGrass = LoadTexture("resources/textures/grass_textures/Grass_01.png");
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GenTextureMipmaps(&texGrass);
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SetTextureFilter(texGrass, TEXTURE_FILTER_TRILINEAR); // nicer at angles
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SetTextureWrap(texGrass, TEXTURE_WRAP_REPEAT);
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// A 3D plane (centered at origin) of size tileSize x tileSize
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const float tileSize = TILE_SIZE;
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Mesh meshTile = GenMeshPlane(tileSize, tileSize, 1, 1);
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Model mdlTile = LoadModelFromMesh(meshTile);
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mdlTile.materials[0].maps[MATERIAL_MAP_ALBEDO].texture = texGrass;
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// --- Skybox setup ---
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// Generate cube mesh
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Mesh cube = GenMeshCube(1.0f, 1.0f, 1.0f);
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Model skybox = LoadModelFromMesh(cube);
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// Load skybox shader
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Shader skyboxShader = LoadShader
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(
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"shaders/skybox.vs",
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"shaders/skybox.fs"
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);
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// Attach shader to skybox
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skybox.materials[0].shader = skyboxShader;
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Image img = LoadImage("resources/cubemap/cubemap.png");
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skybox.materials[0].maps[MATERIAL_MAP_CUBEMAP].texture = LoadTextureCubemap(img, CUBEMAP_LAYOUT_AUTO_DETECT);
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UnloadImage(img); //no longer need image loaded.
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// Tell the shader which material map is the environmentMap
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int mapType = MATERIAL_MAP_CUBEMAP;
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SetShaderValue(skyboxShader, GetShaderLocation(skyboxShader, "environmentMap"), &mapType, SHADER_UNIFORM_INT);
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//Flip/gamma options (set to 0 for PNG cross)
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int vflipped = 0;
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int doGamma = 0;
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SetShaderValue(skyboxShader, GetShaderLocation(skyboxShader, "vflipped"), &vflipped, SHADER_UNIFORM_INT);
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SetShaderValue(skyboxShader, GetShaderLocation(skyboxShader, "doGamma"), &doGamma, SHADER_UNIFORM_INT);
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// Load the fog-of-war shader
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Shader fog = LoadShader("shaders/fog.vs", "shaders/fog.fs");
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// Grab uniform locations (cache them)
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int locPlayer = GetShaderLocation(fog, "u_playerPos");
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int locRadius = GetShaderLocation(fog, "u_fogRadius");
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int locFeather = GetShaderLocation(fog, "u_fogFeather");
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int locFogColor = GetShaderLocation(fog, "u_fogColor");
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int locCutoff_fog = GetShaderLocation(fog, "u_alphaCutoff");
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int locInner = GetShaderLocation(fog, "u_inner");
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int locOuter = GetShaderLocation(fog, "u_outer");
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int locMinShadow = GetShaderLocation(fog, "u_minShadow");
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// Optional if you added the sharpness curve in the shader
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int locSharpness = GetShaderLocation(fog, "u_sharpness");
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//Flashlight
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int locSpotDir = GetShaderLocation(fog, "u_spotDir");
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int locSpotCos = GetShaderLocation(fog, "u_spotCos");
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int locSpotSoft = GetShaderLocation(fog, "u_spotSoft");
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int locLightRange = GetShaderLocation(fog, "u_lightRange");
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int locLightFade = GetShaderLocation(fog, "u_lightFade");
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int locIntensity = GetShaderLocation(fog, "u_intensity");
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int locBeamSpread = GetShaderLocation(fog, "u_beamSpread");
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// Let raylib know which matrices the shader expects
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fog.locs[SHADER_LOC_MATRIX_MODEL] = GetShaderLocation(fog, "matModel");
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fog.locs[SHADER_LOC_MATRIX_VIEW] = GetShaderLocation(fog, "matView");
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fog.locs[SHADER_LOC_MATRIX_PROJECTION] = GetShaderLocation(fog, "matProjection");
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// --- Apply shader to your ground tile model ---
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mdlTile.materials[0].shader = fog; // same shader also works for opaque
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// Defaults for opaque geometry (no alpha cut)
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float cutoffOpaque = 0.0f;
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SetShaderValue(fog, locCutoff_fog, &cutoffOpaque, SHADER_UNIFORM_FLOAT);
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// Fog/vignette tuning
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float inner = 0.0f; // start radius (center under player)
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float outer = 20.0f; // how far until full fog
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float minShadow = 0.85f; // baseline darkness at the center (0 = none, 1 = pitch black)
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float sharpness = 2.0f; // steeper edge (optional if shader uses it)
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Vector4 fogColor = {0.0f, 0.0f, 0.0f, 1.0f};
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// Flashligh tuning
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float spotAngleDeg = 35.0f; //cone angle
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float spotCos = cosf(DEG2RAD * (spotAngleDeg * 0.5f));
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float spotSoft = 0.10f;
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float lightRange = 100.0f;
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float lightFade = 1.0f;
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float intensity = 0.25f; // try 0.7–1.5 to taste
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float beamSpread = 0.05f; // try 0.15–0.35; higher = less “laser” at distance
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SetShaderValue(fog, locIntensity, &intensity, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locBeamSpread, &beamSpread, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locSpotCos, &spotCos, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locSpotSoft, &spotSoft, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locLightRange, &lightRange, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locLightFade, &lightFade, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locInner, &inner, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locOuter, &outer, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locMinShadow, &minShadow, SHADER_UNIFORM_FLOAT);
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SetShaderValue(fog, locFogColor, &fogColor, SHADER_UNIFORM_VEC4);
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SetShaderValue(fog, locSharpness, &sharpness, SHADER_UNIFORM_FLOAT);
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//--------------------------------------------------------------------------------------
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// Main game loop
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//--------------------------------------------------------------------------------------
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while (!g.shouldExit && !WindowShouldClose()) // Detect window close button or ESC key
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{
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// Update
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//----------------------------------------------------------------------------------
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switch (g.state)
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{
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case STATE_MENU:
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{
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if (IsKeyPressed(KEY_UP) && g.index > 0)
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{
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g.index -= 1;
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break;
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};
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if (IsKeyPressed(KEY_DOWN) && g.index < index_length - 1)
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{
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g.index += 1;
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break;
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};
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if (IsKeyPressed(KEY_ENTER))
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{
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switch (g.index)
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{
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case 0:
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{
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g.state = 1;
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CenterMouseAndFlush();
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break;
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}
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case 1:
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{
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break;
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}
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case 2:
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{
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g.shouldExit = 1;
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break;
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}
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}
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};
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break;
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};
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case STATE_GAME:
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{
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Vector2 mouseDelta = GetMouseDelta();
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g.player.lookRotation.x -= mouseDelta.x*g.player.sensitivity.x;
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g.player.lookRotation.y += mouseDelta.y*g.player.sensitivity.y;
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char sideway = (IsKeyDown(KEY_D) - IsKeyDown(KEY_A));
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char forward = (IsKeyDown(KEY_W) - IsKeyDown(KEY_S));
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bool crouching = IsKeyDown(KEY_LEFT_CONTROL);
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UpdateBody(&g, g.player.lookRotation.x, sideway, forward, IsKeyDown(KEY_SPACE), crouching);
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float delta = GetFrameTime();
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g.player.headLerp = Lerp(g.player.headLerp, (crouching ? CROUCH_HEIGHT : STAND_HEIGHT), 20.0f*delta);
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g.player.camera.position = (Vector3){
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g.player.position.x,
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g.player.position.y + (BOTTOM_HEIGHT + g.player.headLerp),
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g.player.position.z,
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};
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if (g.player.isGrounded && ((forward != 0) || (sideway != 0)))
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{
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g.player.headTimer += delta*3.0f;
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g.player.walkLerp = Lerp(g.player.walkLerp, 1.0f, 10.0f*delta);
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g.player.camera.fovy = Lerp(g.player.camera.fovy, 55.0f, 5.0f*delta);
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}
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else
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{
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g.player.walkLerp = Lerp(g.player.walkLerp, 0.0f, 10.0f*delta);
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g.player.camera.fovy = Lerp(g.player.camera.fovy, 60.0f, 5.0f*delta);
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}
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g.player.lean.x = Lerp(g.player.lean.x, sideway*0.02f, 10.0f*delta);
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g.player.lean.y = Lerp(g.player.lean.y, forward*0.015f, 10.0f*delta);
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bbPos.x += (g.player.position.x - bbPos.x)*.005;
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bbPos.z += (g.player.position.z - bbPos.z)*.005;
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UpdateCameraAngle(&g);
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break;
|
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};
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}
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//----------------------------------------------------------------------------------
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// Draw
|
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//----------------------------------------------------------------------------------
|
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BeginDrawing();
|
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switch (g.state)
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{
|
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case STATE_MENU:
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{
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ClearBackground(BLACK);
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Simple_Menu(menu, ARRLEN(menu), g.index, screenWidth * 0.15, screenHeight * 0.15, 500, screenHeight * 0.7, 10, 50, GREEN, LIGHTGRAY);
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Thick_Center_Box(0.1, 0.1, 10, screenWidth, screenHeight, GREEN);
|
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break;
|
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}
|
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case STATE_GAME:
|
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{
|
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ClearBackground(BLACK);
|
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|
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Vector3 camPos = g.player.camera.position;
|
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Vector3 camFwd = Vector3Normalize(Vector3Subtract(g.player.camera.target, camPos));
|
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|
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// Camera forward (normalize target - position)
|
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Vector3 forward = Vector3Normalize(Vector3Subtract(g.player.camera.target, g.player.camera.position));
|
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|
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SetShaderValue(fog, locPlayer, &camPos, SHADER_UNIFORM_VEC3);
|
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SetShaderValue(fog, locSpotDir, &camFwd, SHADER_UNIFORM_VEC3);
|
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|
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BeginMode3D(g.player.camera);
|
||
|
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rlDisableBackfaceCulling();
|
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rlDisableDepthMask();
|
||
|
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// keep it centered on the camera
|
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skybox.transform = MatrixTranslate(
|
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g.player.camera.position.x,
|
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g.player.camera.position.y,
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g.player.camera.position.z
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||
);
|
||
|
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DrawModel(skybox, (Vector3){0}, 1.0f, WHITE);
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rlEnableDepthMask();
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rlEnableBackfaceCulling();
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DrawLevel(mdlTile);
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// --- Trees use same fog shader but with alpha-cut enabled ---
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SetShaderValue(fog, locCutoff_fog, &cutoffAlpha, SHADER_UNIFORM_FLOAT);
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|
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BeginShaderMode(fog);
|
||
|
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RenderTrees(&g, tree, treepos, treeSize);
|
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DrawBillboard(g.player.camera, sign, bbPos, bbSize, WHITE);
|
||
|
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EndShaderMode();
|
||
|
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// Restore opaque cutoff for anything else you draw with that material later
|
||
SetShaderValue(fog, locCutoff_fog, &cutoffOpaque, SHADER_UNIFORM_FLOAT);
|
||
|
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EndMode3D();
|
||
|
||
// Draw info box
|
||
DrawRectangle(5, 5, 330*1.5, 75*1.25, Fade(SKYBLUE, 0.5f));
|
||
DrawRectangleLines(5, 5, 330*1.5, 75*1.25, BLUE);
|
||
|
||
DrawText("Camera controls:", 15, 15, 20, BLACK);
|
||
DrawText("- Move keys: W, A, S, D, Space, Left-Ctrl", 15, 30, 20, BLACK);
|
||
DrawText("- Look around: arrow keys or mouse", 15, 45, 20, BLACK);
|
||
DrawText(TextFormat("- Velocity Len: (%06.3f)", Vector2Length((Vector2){ g.player.velocity.x, g.player.velocity.z })), 15, 60, 20, BLACK);
|
||
|
||
break;
|
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}
|
||
}
|
||
EndDrawing();
|
||
//----------------------------------------------------------------------------------
|
||
};
|
||
|
||
//--------------------------------------------------------------------------------------
|
||
// De-Initialization
|
||
//--------------------------------------------------------------------------------------
|
||
// Detach the texture from the model so UnloadModel won't try to free it.
|
||
mdlTile.materials[0].maps[MATERIAL_MAP_ALBEDO].texture = (Texture2D){0};
|
||
|
||
// Now free resources you loaded:
|
||
UnloadModel(mdlTile); // frees the model and its mesh/VBOs
|
||
UnloadTexture(texGrass); // frees the grass texture you loaded
|
||
UnloadTexture(tree); // frees tree texture
|
||
UnloadTexture(sign);
|
||
|
||
CloseWindow(); // Close window and OpenGL context
|
||
//--------------------------------------------------------------------------------------
|
||
return 0;
|
||
};
|
||
|
||
//------------------------------------------------------------------------------------
|
||
// Function Definitions
|
||
//------------------------------------------------------------------------------------
|
||
//Function creates a simple box outline centered in the screen with a symetric ofset from the screen borders.
|
||
void Simple_Center_Box(double percent_verticle_gap, double percent_horizontal_gap, int screenWidth, int screenHeight, Color color)
|
||
{
|
||
int x1 = percent_horizontal_gap * screenWidth;
|
||
int y1 = percent_verticle_gap * screenHeight;
|
||
|
||
int w = screenWidth * (1 - (2 * percent_horizontal_gap));
|
||
int h = screenHeight * (1 - (2 * percent_verticle_gap));
|
||
|
||
DrawRectangleLines(x1, y1, w, h, color);
|
||
}
|
||
|
||
//Function creates a thick walled box outline centered in the screen with a symetric ofset from the screen borders.
|
||
void Thick_Center_Box(double percent_verticle_gap, double percent_horizontal_gap, float line_width, int screenWidth, int screenHeight, Color color)
|
||
{
|
||
int x1 = percent_horizontal_gap * screenWidth;
|
||
int y1 = percent_verticle_gap * screenHeight;
|
||
|
||
int w = screenWidth * (1 - (2 * percent_horizontal_gap));
|
||
int h = screenHeight * (1 - (2 * percent_verticle_gap));
|
||
|
||
struct Rectangle rec = {x1,y1,w,h};
|
||
|
||
DrawRectangleLinesEx(rec, line_width, color);
|
||
}
|
||
|
||
//Make a simple menu with selection features
|
||
void Simple_Menu(const char *array[], int count, int index, int x1, int y1, int total_width, int total_height, int line_thickess, int font_size, Color color, Color alt_color)
|
||
{
|
||
float height = 0.8f * total_height;
|
||
int space = 0.2 * total_height / (count - 1);
|
||
|
||
struct Rectangle rec = {x1,y1,total_width,(float)height/count};
|
||
|
||
for (int i = 0; i < count; ++i)
|
||
{
|
||
int text_width = MeasureText(array[i], font_size);
|
||
|
||
if(i == index)
|
||
{
|
||
DrawRectangleLinesEx(rec, line_thickess, alt_color);
|
||
DrawText(array[i], rec.x + (((total_width - 2.0 * line_thickess) - text_width)/2), rec.y + (height/count/2) - font_size/2.0f, font_size, alt_color);
|
||
}
|
||
else
|
||
{
|
||
DrawRectangleLinesEx(rec, line_thickess, color);
|
||
DrawText(array[i], rec.x + (((total_width - 2.0 * line_thickess) - text_width)/2), rec.y + (height/count/2) - font_size/2.0f, font_size, color);
|
||
}
|
||
|
||
rec.y = rec.y + (float)height/count + space;
|
||
}
|
||
}
|
||
|
||
void UpdateBody(Master* g, float rot, char side, char forward, bool jumpPressed, bool crouchHold)
|
||
{
|
||
Vector2 input = (Vector2){ (float)side, (float)-forward };
|
||
|
||
#if defined(NORMALIZE_INPUT)
|
||
// Slow down diagonal movement
|
||
if ((side != 0) && (forward != 0)) input = Vector2Normalize(input);
|
||
#endif
|
||
|
||
float delta = GetFrameTime();
|
||
|
||
if (!g->player.isGrounded) g->player.velocity.y -= GRAVITY*delta;
|
||
|
||
if (g->player.isGrounded && jumpPressed)
|
||
{
|
||
g->player.velocity.y = JUMP_FORCE;
|
||
g->player.isGrounded = false;
|
||
|
||
// Sound can be played at this moment
|
||
//SetSoundPitch(fxJump, 1.0f + (GetRandomValue(-100, 100)*0.001));
|
||
//PlaySound(fxJump);
|
||
}
|
||
|
||
Vector3 front = (Vector3){ sin(rot), 0.f, cos(rot) };
|
||
Vector3 right = (Vector3){ cos(-rot), 0.f, sin(-rot) };
|
||
|
||
Vector3 desiredDir = (Vector3){ input.x*right.x + input.y*front.x, 0.0f, input.x*right.z + input.y*front.z, };
|
||
g->player.dir = Vector3Lerp(g->player.dir, desiredDir, CONTROL*delta);
|
||
|
||
float decel = (g->player.isGrounded ? FRICTION : AIR_DRAG);
|
||
Vector3 hvel = (Vector3){ g->player.velocity.x*decel, 0.0f, g->player.velocity.z*decel };
|
||
|
||
float hvelLength = Vector3Length(hvel); // Magnitude
|
||
if (hvelLength < (MAX_SPEED*0.01f)) hvel = (Vector3){ 0 };
|
||
|
||
// This is what creates strafing
|
||
float speed = Vector3DotProduct(hvel, g->player.dir);
|
||
|
||
// Whenever the amount of acceleration to add is clamped by the maximum acceleration constant,
|
||
// a Player can make the speed faster by bringing the direction closer to horizontal velocity angle
|
||
// More info here: https://youtu.be/v3zT3Z5apaM?t=165
|
||
float maxSpeed = (crouchHold? CROUCH_SPEED : MAX_SPEED);
|
||
float accel = Clamp(maxSpeed - speed, 0.f, MAX_ACCEL*delta);
|
||
hvel.x += g->player.dir.x*accel;
|
||
hvel.z += g->player.dir.z*accel;
|
||
|
||
g->player.velocity.x = hvel.x;
|
||
g->player.velocity.z = hvel.z;
|
||
|
||
g->player.position.x += g->player.velocity.x*delta;
|
||
g->player.position.y += g->player.velocity.y*delta;
|
||
g->player.position.z += g->player.velocity.z*delta;
|
||
|
||
// Fancy collision system against the floor
|
||
if (g->player.position.y <= 0.0f)
|
||
{
|
||
g->player.position.y = 0.0f;
|
||
g->player.velocity.y = 0.0f;
|
||
g->player.isGrounded = true; // Enable jumping
|
||
}
|
||
}
|
||
|
||
// Update camera
|
||
static void UpdateCameraAngle(Master* g)
|
||
{
|
||
const Vector3 up = (Vector3){ 0.0f, 1.0f, 0.0f };
|
||
const Vector3 targetOffset = (Vector3){ 0.0f, 0.0f, -1.0f };
|
||
|
||
// Left and right
|
||
Vector3 yaw = Vector3RotateByAxisAngle(targetOffset, up, g->player.lookRotation.x);
|
||
|
||
// Clamp view up
|
||
float maxAngleUp = Vector3Angle(up, yaw);
|
||
maxAngleUp -= 0.001f; // Avoid numerical errors
|
||
if ( -(g->player.lookRotation.y) > maxAngleUp) { g->player.lookRotation.y = -maxAngleUp; }
|
||
|
||
// Clamp view down
|
||
float maxAngleDown = Vector3Angle(Vector3Negate(up), yaw);
|
||
maxAngleDown *= -1.0f; // Downwards angle is negative
|
||
maxAngleDown += 0.001f; // Avoid numerical errors
|
||
if ( -(g->player.lookRotation.y) < maxAngleDown) { g->player.lookRotation.y = -maxAngleDown; }
|
||
|
||
// Up and down
|
||
Vector3 right = Vector3Normalize(Vector3CrossProduct(yaw, up));
|
||
|
||
// Rotate view vector around right axis
|
||
float pitchAngle = -g->player.lookRotation.y -
|
||
g->player.lean.y;
|
||
pitchAngle = Clamp(pitchAngle, -PI / 2 + 0.0001f, PI / 2 - 0.0001f); // Clamp angle so it doesn't go past straight up or straight down
|
||
Vector3 pitch = Vector3RotateByAxisAngle(yaw, right, pitchAngle);
|
||
|
||
// Head animation
|
||
// Rotate up direction around forward axis
|
||
float headSin = sin(g->player.headTimer*PI);
|
||
float headCos = cos(g->player.headTimer*PI);
|
||
const float stepRotation = 0.005f;
|
||
g->player.camera.up = Vector3RotateByAxisAngle(up, pitch, headSin*stepRotation + g->player.lean.x);
|
||
|
||
// Camera BOB
|
||
const float bobSide = 0.01f;
|
||
const float bobUp = 0.01f;
|
||
Vector3 bobbing = Vector3Scale(right, headSin*bobSide);
|
||
bobbing.y = fabsf(headCos*bobUp);
|
||
|
||
g->player.camera.position = Vector3Add(g->player.camera.position, Vector3Scale(bobbing, g->player.walkLerp));
|
||
g->player.camera.target = Vector3Add(g->player.camera.position, pitch);
|
||
}
|
||
|
||
// Draw game level
|
||
static void DrawLevel(Model mdlTile)
|
||
{
|
||
const int floorExtent = FLOOR_EXTENT;
|
||
const float tileSize = TILE_SIZE;
|
||
const Color tileColor1 = (Color){ 150, 200, 200, 255 };
|
||
|
||
// Floor tiles
|
||
for (int y = -floorExtent; y < floorExtent; y++)
|
||
{
|
||
for (int x = -floorExtent; x < floorExtent; x++)
|
||
{
|
||
/*
|
||
if ((y & 1) && (x & 1))
|
||
{
|
||
DrawPlane((Vector3){ x*tileSize, 0.0f, y*tileSize}, (Vector2){ tileSize, tileSize }, tileColor1);
|
||
}
|
||
else if (!(y & 1) && !(x & 1))
|
||
{
|
||
DrawPlane((Vector3){ x*tileSize, 0.0f, y*tileSize}, (Vector2){ tileSize, tileSize }, LIGHTGRAY);
|
||
}
|
||
*/
|
||
Vector3 pos = (Vector3){ x*tileSize, 0.0f, y*tileSize };
|
||
// mdlTile must be accessible here: make it global/static or pass it in
|
||
DrawModel(mdlTile, pos, 1.0f, WHITE);
|
||
|
||
}
|
||
}
|
||
|
||
/*
|
||
const Vector3 towerSize = (Vector3){ 16.0f, 32.0f, 16.0f };
|
||
const Color towerColor = (Color){ 150, 200, 200, 255 };
|
||
|
||
Vector3 towerPos = (Vector3){ 16.0f, 16.0f, 16.0f };
|
||
DrawCubeV(towerPos, towerSize, towerColor);
|
||
DrawCubeWiresV(towerPos, towerSize, DARKBLUE);
|
||
|
||
towerPos.x *= -1;
|
||
DrawCubeV(towerPos, towerSize, towerColor);
|
||
DrawCubeWiresV(towerPos, towerSize, DARKBLUE);
|
||
|
||
towerPos.z *= -1;
|
||
DrawCubeV(towerPos, towerSize, towerColor);
|
||
DrawCubeWiresV(towerPos, towerSize, DARKBLUE);
|
||
|
||
towerPos.x *= -1;
|
||
DrawCubeV(towerPos, towerSize, towerColor);
|
||
DrawCubeWiresV(towerPos, towerSize, DARKBLUE);
|
||
|
||
// Red sun
|
||
DrawSphere((Vector3){ 300.0f, 300.0f, 0.0f }, 100.0f, (Color){ 255, 0, 0, 255 });
|
||
*/
|
||
}
|
||
|
||
//fix mouse
|
||
static void CenterMouseAndFlush()
|
||
{
|
||
SetMousePosition(GetRenderWidth()/2, GetRenderHeight()/2);
|
||
(void)GetMouseDelta();
|
||
}
|
||
|
||
//Random number gen
|
||
int Random(int x)
|
||
{
|
||
int r = (rand() % x) + 1; // 1–40
|
||
return r;
|
||
}
|
||
|
||
static inline void DrawTreeBillboardStable(Camera cam, Texture2D tex, Vector3 groundPos, float heightWorld, Color tint)
|
||
{
|
||
// Keep sprite aspect ratio
|
||
float aspect = (float)tex.width / (float)tex.height;
|
||
Vector2 size = (Vector2){ heightWorld * aspect, heightWorld };
|
||
|
||
// Bottom-center pivot so base sits on groundPos.y
|
||
Vector2 origin = (Vector2){ 0.5f, 0.75f };
|
||
|
||
// Fixed world up (ignore camera.up roll)
|
||
Vector3 up = (Vector3){ 0, 1, 0 };
|
||
|
||
Rectangle src = (Rectangle){ 0, 0, (float)tex.width, (float)tex.height };
|
||
DrawBillboardPro(cam, tex, src, groundPos, up, size, origin, 0.0f, tint);
|
||
}
|
||
|
||
static void RenderTrees(Master* g, Texture2D tree, Vector3 baseTreePos, float treeSize)
|
||
{
|
||
const int floorExtent = FLOOR_EXTENT;
|
||
const float tileSize = TILE_SIZE;
|
||
|
||
// Placement knobs
|
||
const int densityA = 10; // 1-in-10 on (odd,odd)
|
||
const int densityB = 13; // 1-in-14 on (even,even)
|
||
const float jitter = tileSize * 0.35f; // random in-tile offset
|
||
|
||
const float groundY = baseTreePos.y; // <-- use this as terrain height
|
||
|
||
for (int z = -floorExtent; z < floorExtent; ++z)
|
||
for (int x = -floorExtent; x < floorExtent; ++x)
|
||
{
|
||
uint32_t h = hash2i(x, z, gWorldSeed);
|
||
uint32_t hA = h;
|
||
uint32_t hB = h * 0x9E3779B1u + 0x85EBCA6Bu;
|
||
|
||
// (odd,odd)
|
||
if ((z & 1) && (x & 1) && one_in_n(hA, densityA)) {
|
||
float ox = hash01_to_m05p05(hA) * jitter;
|
||
float oz = hash01_to_m05p05(hA >> 8) * jitter;
|
||
|
||
Vector3 pos = { x*tileSize + ox, groundY, z*tileSize + oz };
|
||
DrawTreeBillboardStable(g->player.camera, tree, pos, /*height*/ treeSize, WHITE);
|
||
}
|
||
|
||
// (even,even)
|
||
if (!(z & 1) && !(x & 1) && one_in_n(hB, densityB)) {
|
||
float ox = hash01_to_m05p05(hB) * jitter;
|
||
float oz = hash01_to_m05p05(hB >> 8) * jitter;
|
||
|
||
Vector3 pos = { x*tileSize + ox, groundY, z*tileSize + oz };
|
||
DrawTreeBillboardStable(g->player.camera, tree, pos, /*height*/ treeSize, WHITE);
|
||
}
|
||
}
|
||
} |