Create FPS_Custom_Camera.c

3D/FPS_Custom_Camera.c

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+//
+// If this will not conpile than look for the files raylib.h and raymath.h and copy these
+// into the folder where this file is. You can find these files in the raylib /src folder.
+//
+//
+
+
+#include "raylib.h"
+#include "raymath.h"
+#include <stdlib.h>
+
+
+#define PLAYER_MOVEMENT_SENSITIVITY 3
+#define CAMERA_MOUSE_MOVE_SENSITIVITY 0.01f
+
+static Vector2 lastMousePos;
+static Vector3 movement = {0, -0.2f, 0};
+static Vector3 rotation ;
+
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+
+    // We generate a checked image for texturing
+    Image checked = GenImageChecked(2, 2, 1, 1, RED, GREEN);
+    Texture2D texture = LoadTextureFromImage(checked);
+    UnloadImage(checked);
+
+    Model model = { 0 };
+    model = LoadModelFromMesh(GenMeshCube(1.0f, 1.0f, 1.0f));
+    
+    // Set checked texture as default diffuse component for all models material
+    model.materials[0].maps[MAP_DIFFUSE].texture = texture;
+
+    // Define the camera to look into our 3d world
+    Camera camera = { { 5.0f, 5.0f, 5.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f, 0 };
+
+
+    SetCameraMode(camera, CAMERA_FIRST_PERSON);     // Set camera mode
+    //SetCameraMode(camera, CAMERA_ORBITAL);  // Set a orbital camera mode
+
+ 
+    camera.position = (Vector3){50.0f, 1.0f, 50.0f};
+    camera.target = (Vector3){50.0f, 1.0f, 50.0f};
+    camera.up = (Vector3){0.0f, 1.0f, 0.0f};
+    camera.fovy = 60.0f;
+    camera.type = CAMERA_PERSPECTIVE;
+    rotation = (Vector3){0.0f, 0.0f, 0.0f};
+    //world = world;
+    lastMousePos = GetMousePosition();
+ 
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        //UpdateCamera(&camera);      // Update internal camera and our camera
+        // -------------------- Rotation stuff --------------------
+        Vector2 mouseMovement = Vector2Subtract(GetMousePosition(), lastMousePos);
+
+        lastMousePos = GetMousePosition();
+
+        rotation.x += (mouseMovement.x*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+        rotation.y += (mouseMovement.y*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+        
+        // -------------------- Movement stuff --------------------
+
+        float direction[] = { IsKeyDown(KEY_W),
+                              IsKeyDown(KEY_S),
+                              IsKeyDown(KEY_D),
+                              IsKeyDown(KEY_A)};
+
+        //movement = (Vector3){0, movement.y + GetFrameTime() * -0.5, 0};
+        movement = (Vector3){0, 0, 0};
+        movement.x = (sinf(rotation.x)*direction[1] -
+                      sinf(rotation.x)*direction[0] -
+                      cosf(rotation.x)*direction[3] +
+                      cosf(rotation.x)*direction[2])/PLAYER_MOVEMENT_SENSITIVITY;
+
+        movement.z = (cosf(rotation.x)*direction[1] -
+                      cosf(rotation.x)*direction[0] +
+                      sinf(rotation.x)*direction[3] -
+                      sinf(rotation.x)*direction[2])/PLAYER_MOVEMENT_SENSITIVITY;
+
+        if (IsKeyDown(KEY_F))
+            movement.y -= 0.12f;
+        if (IsKeyDown(KEY_R))
+            movement.y += 0.12f;
+
+        camera.position.x += movement.x / PLAYER_MOVEMENT_SENSITIVITY;
+
+        camera.position.y += movement.y;
+
+        camera.position.z += movement.z / PLAYER_MOVEMENT_SENSITIVITY;
+
+        // -------------------- Retarget stuff --------------------
+
+        Matrix translation = MatrixTranslate(0, 0, (10));
+        Matrix rotation2 = MatrixRotateXYZ((Vector3){ PI*2 - rotation.y, PI*2 - rotation.x, 0 });
+        Matrix transform = MatrixMultiply(translation, rotation2);
+
+        camera.target.x = camera.position.x - transform.m12;
+        camera.target.y = camera.position.y - transform.m13;
+        camera.target.z = camera.position.z - transform.m14;
+        
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginMode3D(camera);
+
+                for(int x=0;x<50;x++){
+                for(int z=0;z<50;z++){
+                    Vector3 position;
+                    position.x = x;
+                    position.y = 0;
+                    position.z = z;
+                    DrawModel(model, position, 1.0f, WHITE);
+                }
+                }
+
+            EndMode3D();
+            
+            DrawText("Controls - Mouse w/a/s/d/ r/f.",400,0,20,DARKGRAY);
+            DrawFPS(0,0);
+            
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+   UnloadTexture(texture); // Unload texture
+
+    // Unload models data (GPU VRAM)
+    UnloadModel(model);
+
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}