place and remove blocks via mouse

[blank.git] / src / app.cpp

diff --git a/src/app.cpp b/src/app.cpp
index 5a5d6fba176376ab1052cec778afe9dd90c242e2..9ec9384f9ce749198af886d8fb16cff93c5d5ac3 100644 (file)
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -41,7 +41,12 @@ Application::Application()
 , left(false)
 , right(false)
 , up(false)
-, down(false) {
+, down(false)
+, place(false)
+, remove(false)
+, pick(false)
+, remove_id(0)
+, place_id(1) {
        GLContext::EnableVSync();
        GLContext::EnableDepthTest();
        GLContext::EnableBackfaceCulling();
@@ -210,6 +215,18 @@ void Application::HandleEvents() {
                                                break;
                                }
                                break;
+                       case SDL_MOUSEBUTTONDOWN:
+                               if (event.button.button == 1) {
+                                       // left
+                                       remove = true;
+                               } else if (event.button.button == 2) {
+                                       // middle
+                                       pick = true;
+                               } else if (event.button.button == 3) {
+                                       // right
+                                       place = true;
+                               }
+                               break;
                        case SDL_MOUSEMOTION:
                                cam.RotateYaw(event.motion.xrel * yaw_sensitivity);
                                cam.RotatePitch(event.motion.yrel * pitch_sensitivity);
@@ -256,13 +273,36 @@ void Application::Update(int dt) {
        Ray aim = cam.Aim();
        int blkid;
        float dist;
-       if (chunk.Intersection(aim, glm::mat4(1.0f), &blkid, &dist)) {
+       glm::vec3 normal;
+       if (chunk.Intersection(aim, glm::mat4(1.0f), &blkid, &dist, &normal)) {
                glm::vec3 pos = Chunk::ToCoords(blkid);
                outline_visible = true;
                outline_transform = glm::translate(glm::mat4(1.0f), pos);
        } else {
                outline_visible = false;
        }
+
+       if (pick) {
+               if (outline_visible) {
+                       place_id = chunk.BlockAt(blkid).type->id;
+               }
+               pick = false;
+       }
+       if (remove) {
+               chunk.BlockAt(blkid).type = blockType[remove_id];
+               chunk.Invalidate();
+               remove = false;
+       }
+       if (place) {
+               if (outline_visible) {
+                       int next_blkid = Chunk::ToIndex(Chunk::ToCoords(blkid) + normal);
+                       if (next_blkid >= 0 && next_blkid < Chunk::Size()) {
+                               chunk.BlockAt(next_blkid).type = blockType[place_id];
+                               chunk.Invalidate();
+                       }
+               }
+               place = false;
+       }
 }
 
 void Application::Render() {