Updated web examples to latest raylib

1 files changed, 163 insertions, 0 deletions

diff --git a/examples/web/physics/physics_movement.c b/examples/web/physics/physics_movement.c
new file mode 100644
index 0000000..d7a2f7d
--- /dev/null
+++ b/examples/web/physics/physics_movement.c
@@ -0,0 +1,163 @@
+/*******************************************************************************************
+*
+*   Physac - Physics movement
+*
+*   NOTE 1: Physac requires multi-threading, when InitPhysics() a second thread is created to manage physics calculations.
+*   NOTE 2: Physac requires static C library linkage to avoid dependency on MinGW DLL (-static -lpthread)
+*
+*   Use the following line to compile:
+*
+*   gcc -o $(NAME_PART).exe $(FILE_NAME) -s $(RAYLIB_DIR)\raylib\raylib_icon -static -lraylib -lpthread
+*   -lglfw3 -lopengl32 -lgdi32 -lopenal32 -lwinmm -std=c99 -Wl,--subsystem,windows -Wl,-allow-multiple-definition
+*
+*   Copyright (c) 2017 Victor Fisac
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define PHYSAC_IMPLEMENTATION
+#include "physac.h"
+
+#if defined(PLATFORM_WEB)
+    #include <emscripten/emscripten.h>
+#endif
+
+#define VELOCITY    0.5f
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+const int screenWidth = 800;
+const int screenHeight = 450;
+
+// Physac logo drawing position
+int logoX = 0;
+int logoY = 15;
+
+PhysicsBody body = { 0 };
+
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+void UpdateDrawFrame(void);     // Update and Draw one frame
+
+//----------------------------------------------------------------------------------
+// Program Main Entry Point
+//----------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    SetConfigFlags(FLAG_MSAA_4X_HINT);
+    InitWindow(screenWidth, screenHeight, "Physac [raylib] - Physics movement");
+
+    // Physac logo drawing position
+    logoX = screenWidth - MeasureText("Physac", 30) - 10;
+
+    // Initialize physics and default physics bodies
+    InitPhysics();
+
+    // Create ground and walls rectangle physics body
+    PhysicsBody ground = CreatePhysicsBodyRectangle((Vector2){ screenWidth/2, screenHeight }, screenWidth, 100, 10);
+    PhysicsBody platformLeft = CreatePhysicsBodyRectangle((Vector2){ screenWidth*0.25f, screenHeight*0.6f }, screenWidth*0.25f, 10, 10);
+    PhysicsBody platformRight = CreatePhysicsBodyRectangle((Vector2){ screenWidth*0.75f, screenHeight*0.6f }, screenWidth*0.25f, 10, 10);
+    PhysicsBody wallLeft = CreatePhysicsBodyRectangle((Vector2){ -5, screenHeight/2 }, 10, screenHeight, 10);
+    PhysicsBody wallRight = CreatePhysicsBodyRectangle((Vector2){ screenWidth + 5, screenHeight/2 }, 10, screenHeight, 10);
+
+    // Disable dynamics to ground and walls physics bodies
+    ground->enabled = false;
+    platformLeft->enabled = false;
+    platformRight->enabled = false;
+    wallLeft->enabled = false;
+    wallRight->enabled = false;
+
+    // Create movement physics body
+    body = CreatePhysicsBodyRectangle((Vector2){ screenWidth/2, screenHeight/2 }, 50, 50, 1);
+    body->freezeOrient = true;  // Constrain body rotation to avoid little collision torque amounts
+
+
+#if defined(PLATFORM_WEB)
+    emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
+#else
+    SetTargetFPS(60);   // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        UpdateDrawFrame();
+    }
+#endif
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    ClosePhysics();       // Uninitialize physics
+
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition
+//----------------------------------------------------------------------------------
+void UpdateDrawFrame(void)
+{
+    // Update
+    //----------------------------------------------------------------------------------
+    if (IsKeyPressed('R'))    // Reset physics input
+    {
+        // Reset movement physics body position, velocity and rotation
+        body->position = (Vector2){ screenWidth/2, screenHeight/2 };
+        body->velocity = (Vector2){ 0, 0 };
+        SetPhysicsBodyRotation(body, 0);
+    }
+
+    // Horizontal movement input
+    if (IsKeyDown(KEY_RIGHT)) body->velocity.x = VELOCITY;
+    else if (IsKeyDown(KEY_LEFT)) body->velocity.x = -VELOCITY;
+
+    // Vertical movement input checking if player physics body is grounded
+    if (IsKeyDown(KEY_UP) && body->isGrounded) body->velocity.y = -VELOCITY*4;
+    //----------------------------------------------------------------------------------
+
+    // Draw
+    //----------------------------------------------------------------------------------
+    BeginDrawing();
+
+        ClearBackground(BLACK);
+
+        DrawFPS(screenWidth - 90, screenHeight - 30);
+
+        // Draw created physics bodies
+        int bodiesCount = GetPhysicsBodiesCount();
+        for (int i = 0; i < bodiesCount; i++)
+        {
+            PhysicsBody body = GetPhysicsBody(i);
+
+            int vertexCount = GetPhysicsShapeVerticesCount(i);
+            for (int j = 0; j < vertexCount; j++)
+            {
+                // Get physics bodies shape vertices to draw lines
+                // Note: GetPhysicsShapeVertex() already calculates rotation transformations
+                Vector2 vertexA = GetPhysicsShapeVertex(body, j);
+
+                int jj = (((j + 1) < vertexCount) ? (j + 1) : 0);   // Get next vertex or first to close the shape
+                Vector2 vertexB = GetPhysicsShapeVertex(body, jj);
+
+                DrawLineV(vertexA, vertexB, GREEN);     // Draw a line between two vertex positions
+            }
+        }
+
+        DrawText("Use 'ARROWS' to move player", 10, 10, 10, WHITE);
+        DrawText("Press 'R' to reset example", 10, 30, 10, WHITE);
+
+        DrawText("Physac", logoX, logoY, 30, WHITE);
+        DrawText("Powered by", logoX + 50, logoY - 7, 10, WHITE);
+
+    EndDrawing();
+    //----------------------------------------------------------------------------------
+}
+